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1

Catalytic steam gasification of coals  

Science Journals Connector (OSTI)

Catalytic steam gasification of coals ... Steam–Coal Gasification Using CaO and KOH for in Situ Carbon and Sulfur Capture ... Steam–Coal Gasification Using CaO and KOH for in Situ Carbon and Sulfur Capture ...

P. Pereira; G. A. Somorjai; H. Heinemann

1992-07-01T23:59:59.000Z

2

Catalytic Coal Gasification Process  

NLE Websites -- All DOE Office Websites (Extended Search)

Catalytic Coal Gasification Process Catalytic Coal Gasification Process for the Production of Methane-Rich Syngas Opportunity Research is active on the patent pending technology, titled "Production of Methane-Rich Syngas from Fuels Using Multi-functional Catalyst/Capture Agent." This technology is available for licensing and/or further collaborative research from the U.S. Department of Energy's National Energy Technology Laboratory. Overview Reducing pollution emitted by coal and waste power plants in an economically viable manner and building power plants that co-generate fuels and chemicals during times of low electricity demand are pressing goals for the energy industry. One way to achieve these goals in an economically viable manner is through the use of a catalytic gasifier that

3

Catalytic Hydrothermal Gasification of Biomass  

SciTech Connect

A recent development in biomass gasification is the use of a pressurized water processing environment in order that drying of the biomass can be avoided. This paper reviews the research undertaken developing this new option for biomass gasification. This review does not cover wet oxidation or near-atmospheric-pressure steam-gasification of biomass. Laboratory research on hydrothermal gasification of biomass focusing on the use of catalysts is reviewed here, and a companion review focuses on non-catalytic processing. Research includes liquid-phase, sub-critical processing as well as super-critical water processing. The use of heterogeneous catalysts in such a system allows effective operation at lower temperatures, and the issues around the use of catalysts are presented. This review attempts to show the potential of this new processing concept by comparing the various options under development and the results of the research.

Elliott, Douglas C.

2008-05-06T23:59:59.000Z

4

Rich catalytic injection  

DOE Patents (OSTI)

A gas turbine engine includes a compressor, a rich catalytic injector, a combustor, and a turbine. The rich catalytic injector includes a rich catalytic device, a mixing zone, and an injection assembly. The injection assembly provides an interface between the mixing zone and the combustor. The injection assembly can inject diffusion fuel into the combustor, provides flame aerodynamic stabilization in the combustor, and may include an ignition device.

Veninger, Albert (Coventry, CT)

2008-12-30T23:59:59.000Z

5

Catalytic gasification of tars from a dumping site  

Science Journals Connector (OSTI)

The work deals with catalytic gasification, pyrolysis and non-catalytic gasification of tar from an industrial dumping site. ... were carried out in a vertical stainless steel gasification reactor at 800 °C. Crus...

Lukáš Gašparovi?; Lukáš Šugár…

2013-10-01T23:59:59.000Z

6

Utilization of char from biomass gasification in catalytic applications  

E-Print Network (OSTI)

Utilization of char from biomass gasification in catalytic applications Naomi Klinghoffer Submitted Utilization of char from biomass gasification in catalytic applications Naomi Klinghoffer Utilization takes place during catalytic decomposition. This thesis focuses on the utilization of char as a catalyst

7

Short Communication Catalytic coal gasification: use of calcium versus potassium*  

E-Print Network (OSTI)

Short Communication Catalytic coal gasification: use of calcium versus potassium* Ljubisa R on the gasification in air and 3.1 kPa steam of North Dakota lignitic chars prepared under slow and rapid pyrolysis of calcium is related to its sintering via crystallite growth. (Keywords: coal; gasification; catalysis

8

Fluid-Bed Testing of Greatpoint Energy's Direct Oxygen Injection Catalytic Gasification Process for Synthetic Natural Gas and Hydrogen Coproduction Year 6 - Activity 1.14 - Development of a National Center for Hydrogen Technology  

SciTech Connect

The GreatPoint Energy (GPE) concept for producing synthetic natural gas and hydrogen from coal involves the catalytic gasification of coal and carbon. GPE’s technology “refines” coal by employing a novel catalyst to “crack” the carbon bonds and transform the coal into cleanburning methane (natural gas) and hydrogen. The GPE mild “catalytic” gasifier design and operating conditions result in reactor components that are less expensive and produce pipeline-grade methane and relatively high purity hydrogen. The system operates extremely efficiently on very low cost carbon sources such as lignites, subbituminous coals, tar sands, petcoke, and petroleum residual oil. In addition, GPE’s catalytic coal gasification process eliminates troublesome ash removal and slagging problems, reduces maintenance requirements, and increases thermal efficiency, significantly reducing the size of the air separation plant (a system that alone accounts for 20% of the capital cost of most gasification systems) in the catalytic gasification process. Energy & Environmental Research Center (EERC) pilot-scale gasification facilities were used to demonstrate how coal and catalyst are fed into a fluid-bed reactor with pressurized steam and a small amount of oxygen to “fluidize” the mixture and ensure constant contact between the catalyst and the carbon particles. In this environment, the catalyst facilitates multiple chemical reactions between the carbon and the steam on the surface of the coal. These reactions generate a mixture of predominantly methane, hydrogen, and carbon dioxide. Product gases from the process are sent to a gas-cleaning system where CO{sub 2} and other contaminants are removed. In a full-scale system, catalyst would be recovered from the bottom of the gasifier and recycled back into the fluid-bed reactor. The by-products (such as sulfur, nitrogen, and CO{sub 2}) would be captured and could be sold to the chemicals and petroleum industries, resulting in near-zero hazardous air or water pollution. This technology would also be conducive to the efficient coproduction of methane and hydrogen while also generating a relatively pure CO{sub 2} stream suitable for enhanced oil recovery (EOR) or sequestration. Specific results of bench-scale testing in the 4- to 38-lb/hr range in the EERC pilot system demonstrated high methane yields approaching 15 mol%, with high hydrogen yields approaching 50%. This was compared to an existing catalytic gasification model developed by GPE for its process. Long-term operation was demonstrated on both Powder River Basin subbituminous coal and on petcoke feedstocks utilizing oxygen injection without creating significant bed agglomeration. Carbon conversion was greater than 80% while operating at temperatures less than 1400°F, even with the shorter-than-desired reactor height. Initial designs for the GPE gasification concept called for a height that could not be accommodated by the EERC pilot facility. More gas-phase residence time should allow the syngas to be converted even more to methane. Another goal of producing significant quantities of highly concentrated catalyzed char for catalyst recovery and material handling studies was also successful. A Pd–Cu membrane was also successfully tested and demonstrated to produce 2.54 lb/day of hydrogen permeate, exceeding the desired hydrogen permeate production rate of 2.0 lb/day while being tested on actual coal-derived syngas that had been cleaned with advanced warm-gas cleanup systems. The membranes did not appear to suffer any performance degradation after exposure to the cleaned, warm syngas over a nominal 100-hour test.

Swanson, Michael; Henderson, Ann

2012-04-01T23:59:59.000Z

9

Fluidized bed injection assembly for coal gasification  

DOE Patents (OSTI)

A coaxial feed system for fluidized bed coal gasification processes including an inner tube for injecting particulate combustibles into a transport gas, an inner annulus about the inner tube for injecting an oxidizing gas, and an outer annulus about the inner annulus for transporting a fluidizing and cooling gas. The combustibles and oxidizing gas are discharged vertically upward directly into the combustion jet, and the fluidizing and cooling gas is discharged in a downward radial direction into the bed below the combustion jet.

Cherish, Peter (Bethel Park, PA); Salvador, Louis A. (Hempfield Township, Westmoreland County, PA)

1981-01-01T23:59:59.000Z

10

Fluidized bed catalytic coal gasification process  

DOE Patents (OSTI)

Coal or similar carbonaceous solids impregnated with gasification catalyst constituents (16) are oxidized by contact with a gas containing between 2 volume percent and 21 volume percent oxygen at a temperature between 50.degree. C. and 250.degree. C. in an oxidation zone (24) and the resultant oxidized, catalyst impregnated solids are then gasified in a fluidized bed gasification zone (44) at an elevated pressure. The oxidation of the catalyst impregnated solids under these conditions insures that the bed density in the fluidized bed gasification zone will be relatively high even though the solids are gasified at elevated pressure and temperature.

Euker, Jr., Charles A. (15163 Dianna La., Houston, TX 77062); Wesselhoft, Robert D. (120 Caldwell, Baytown, TX 77520); Dunkleman, John J. (3704 Autumn La., Baytown, TX 77520); Aquino, Dolores C. (15142 McConn, Webster, TX 77598); Gouker, Toby R. (5413 Rocksprings Dr., LaPorte, TX 77571)

1984-01-01T23:59:59.000Z

11

CATALYTIC GASIFICATION OF COAL USING EUTECTIC SALT MIXTURES  

SciTech Connect

The Gas Research Institute (GRI) estimates that by the year 2010, 40% or more of U.S. gas supply will be provided by supplements including substitute natural gas (SNG) from coal. These supplements must be cost competitive with other energy sources. The first generation technologies for coal gasification e.g. the Lurgi Pressure Gasification Process and the relatively newer technologies e.g. the KBW (Westinghouse) Ash Agglomerating Fluidized-Bed, U-Gas Ash Agglomerating Fluidized-Bed, British Gas Corporation/Lurgi Slagging Gasifier, Texaco Moving-Bed Gasifier, and Dow and Shell Gasification Processes, have several disadvantages. These disadvantages include high severities of gasification conditions, low methane production, high oxygen consumption, inability to handle caking coals, and unattractive economics. Another problem encountered in catalytic coal gasification is deactivation of hydroxide forms of alkali and alkaline earth metal catalysts by oxides of carbon (CO{sub x}). To seek solutions to these problems, a team consisting of Clark Atlanta University (CAU, a Historically Black College and University, HBCU), the University of Tennessee Space Institute (UTSI) and Georgia Institute of Technology (Georgia Tech) proposed to identify suitable low melting eutectic salt mixtures for improved coal gasification. The research objectives of this project were to: Identify appropriate eutectic salt mixture catalysts for coal gasification; Assess agglomeration tendency of catalyzed coal; Evaluate various catalyst impregnation techniques to improve initial catalyst dispersion; Determine catalyst dispersion at high carbon conversion levels; Evaluate effects of major process variables (such as temperature, system pressure, etc.) on coal gasification; Evaluate the recovery, regeneration and recycle of the spent catalysts; and Conduct an analysis and modeling of the gasification process to provide better understanding of the fundamental mechanisms and kinetics of the process.

Dr. Yaw D. Yeboah; Dr. Yong Xu; Dr. Atul Sheth; Dr. Pradeep Agrawal

2001-12-01T23:59:59.000Z

12

Catalytic gasification of automotive shredder residues with hydrogen generation  

Science Journals Connector (OSTI)

Hydrogen is a clean and new energy carrier to generate power through the Proton exchange membrane fuel cell (PEMFC) system. Hydrogen can be effectively turned out through the catalytic gasification of organic material such as automotive shredder residues (ASR). The main objective of this manuscript is to present an analysis of the catalytic gasification of ASR for the generation of high-purity hydrogen in a lab-scale fixed-bed downdraft gasifier using 15 wt.% NiO/Al2O3 catalysts at 760–900 K. In the catalytic gasification process, reduction of Ni(II) catalyst into Ni(0) has been confirmed through XANES spectra and consequently EXAFS data shows that the central Ni atoms have Ni–O and Ni–Ni bonds with bond distances of 2.03 ± 0.05 and 2.46 ± 0.05 Å, respectively. ASR is partially oxidized and ultimately converts into hydrogen rich syngas (CO and H2) and increases of the reaction temperature are favored the generation of hydrogen with decomposition of the CO. As well, approximately 220 kg h?1 of ASR would be catalytically gasified at 760–900 K and 46.2 atm with the reactor volume 0.27 m3 to obtain approximately 3.42 × 105 kcal h?1 of thermal energy during over 87% syngas generation with the generation of 100 kW electric powers.

Kuen-Song Lin; Sujan Chowdhury; Ze-Ping Wang

2010-01-01T23:59:59.000Z

13

Catalytic Conversion of Tars, Carbon Black and Methane from Pyrolysis/Gasification of Biomass  

Science Journals Connector (OSTI)

The use of catalysts in biomass gasification has been suggested for a long time.1 Fung and Graham found that potassium carbonate and calcium oxide have catalytic influences on the gasification rate and the produc...

Clas Ekström; Nils Lindman; Rune Pettersson

1985-01-01T23:59:59.000Z

14

Selection of Coal Gasification Parameters for Injection of Gasification Products Into a Blast Furnace  

Science Journals Connector (OSTI)

An analytical study was performed on the influence of blast parameters on the course of the processes in the volume of a blast furnace and smelting rates by injection of low-grade coal gasification products. It w...

I. G. Tovarovsky; A. E. Merkulov

2014-01-01T23:59:59.000Z

15

Biomass gasification using a horizontal entrained-flow gasifier and catalytic processing of the product gas.  

E-Print Network (OSTI)

??A novel study on biomass-air gasification using a horizontal entrained-flow gasifier and catalytic processing of the product gas has been conducted. The study was designed… (more)

Legonda, Isack Amos

2012-01-01T23:59:59.000Z

16

Catalytic combustor for integrated gasification combined cycle power plant  

DOE Patents (OSTI)

A gasification power plant 10 includes a compressor 32 producing a compressed air flow 36, an air separation unit 22 producing a nitrogen flow 44, a gasifier 14 producing a primary fuel flow 28 and a secondary fuel source 60 providing a secondary fuel flow 62 The plant also includes a catalytic combustor 12 combining the nitrogen flow and a combustor portion 38 of the compressed air flow to form a diluted air flow 39 and combining at least one of the primary fuel flow and secondary fuel flow and a mixer portion 78 of the diluted air flow to produce a combustible mixture 80. A catalytic element 64 of the combustor 12 separately receives the combustible mixture and a backside cooling portion 84 of the diluted air flow and allows the mixture and the heated flow to produce a hot combustion gas 46 provided to a turbine 48. When fueled with the secondary fuel flow, nitrogen is not combined with the combustor portion.

Bachovchin, Dennis M. (Mauldin, SC); Lippert, Thomas E. (Murrysville, PA)

2008-12-16T23:59:59.000Z

17

Advanced power systems featuring a closely coupled catalytic gasification carbonate fuel cell plant  

SciTech Connect

Pursuing the key national goal of clean and efficient uulization of the abundant domestic coal resources for power generation, a study was conducted with DOE/METC support to evaluate the potential of integrated gasification/carbonate fuel cell power generation systems. By closely coupling the fuel cell with the operation of a catalytic gasifier, the advantages of both the catalytic gasification and the high efficiency fuel cell complement each other, resulting in a power plant system with unsurpassed efficiencies approaching 55% (HHV). Low temperature catalytic gasification producing a high methane fuel gas offers the potential for high gas efficiencies by operating with minimal or no combustion. Heat required for gasification is provided by combination of recycle from the fuel cell and exothermic methanation and shift reactions. Air can be supplemented if required. In combination with internally reforming carbonate fuel cells, low temperature catalytic gasification can achieve very attractive system efficiencies while producing extremely low emissions compared to conventional plants utilizing coal. Three system configurations based on recoverable and disposable gasification catalysts were studied. Experimental tests were conducted to evaluate these gasification catalysts. The recoverable catalyst studied was potassium carbonate, and the disposable catalysts were calcium in the form of limestone and iron in the form of taconite. Reactivities of limestone and iron were lower than that of potassium, but were improved by using the catalyst in solution form. Promising results were obtained in the system evaluations as well as the experimental testing of the gasification catalysts. To realize the potential of these high efficiency power plant systems more effort is required to develop catalytic gasification systems and their integration with carbonate fuel cells.

Steinfeld, G.; Wilson, W.G.

1993-06-01T23:59:59.000Z

18

Advanced power systems featuring a closely coupled catalytic gasification carbonate fuel cell plant  

SciTech Connect

Pursuing the key national goal of clean and efficient uulization of the abundant domestic coal resources for power generation, a study was conducted with DOE/METC support to evaluate the potential of integrated gasification/carbonate fuel cell power generation systems. By closely coupling the fuel cell with the operation of a catalytic gasifier, the advantages of both the catalytic gasification and the high efficiency fuel cell complement each other, resulting in a power plant system with unsurpassed efficiencies approaching 55% (HHV). Low temperature catalytic gasification producing a high methane fuel gas offers the potential for high gas efficiencies by operating with minimal or no combustion. Heat required for gasification is provided by combination of recycle from the fuel cell and exothermic methanation and shift reactions. Air can be supplemented if required. In combination with internally reforming carbonate fuel cells, low temperature catalytic gasification can achieve very attractive system efficiencies while producing extremely low emissions compared to conventional plants utilizing coal. Three system configurations based on recoverable and disposable gasification catalysts were studied. Experimental tests were conducted to evaluate these gasification catalysts. The recoverable catalyst studied was potassium carbonate, and the disposable catalysts were calcium in the form of limestone and iron in the form of taconite. Reactivities of limestone and iron were lower than that of potassium, but were improved by using the catalyst in solution form. Promising results were obtained in the system evaluations as well as the experimental testing of the gasification catalysts. To realize the potential of these high efficiency power plant systems more effort is required to develop catalytic gasification systems and their integration with carbonate fuel cells.

Steinfeld, G.; Wilson, W.G.

1993-01-01T23:59:59.000Z

19

NETL: C&CBTL - Investigation of Coal-Biomass Catalytic Gasification Using  

NLE Websites -- All DOE Office Websites (Extended Search)

Coal/Biomass Feed and Gasification Coal/Biomass Feed and Gasification Investigation of Coal-Biomass Catalytic Gasification Using Experiments, Reaction Kinetics and Computational Fluid Dynamics Virginia Polytechnic Institute and State University Project Number: FE0005476 Project Description The objectives of the proposed study are to obtain experimental reactor data and develop kinetic rate expressions for pyrolysis and char gasification for the coal-biomass blends under conditions free from transport limitations, to develop a detailed understanding of the effect of pyrolysis conditions on the porous char structure, to build mathematical models that combine true kinetic rate expressions with transport models for predicting gasification behavior for a broad range of pressures and temperatures, and to investigate the physical and chemical parameters that might lead to synergistic effects in coal-biomass blends gasification.

20

Coke gasification: the influence and behavior of inherent catalytic mineral matter  

SciTech Connect

Gasification of coke contributes to its degradation in the blast furnace. In this study, the effect of gasification on the inherent catalytic minerals in cokes and their reciprocal influence on gasification are investigated. The catalytic mineral phases identified in the cokes used in this study were metallic iron, iron sulfides, and iron oxides. Metallic iron and pyrrhotite were rapidly oxidized during gasification to iron oxide. The catalysts had a strong influence on the apparent rates at the initial stages of reaction. As gasification proceeds, their effect on the reaction rate diminishes as a result of reducing the surface contact between catalyst and carbon matrix because of carbon consumption around the catalyst particles; with extended burnout the reactivity of the coke becomes increasingly dependent on surface area. The reaction rate in the initial stages was also influenced by the particle size of the catalytic minerals; for a given catalytic iron level, the cokes whose catalytic minerals were more finely dispersed had a higher apparent reaction rate than cokes containing larger catalytic particles. Iron, sodium, and potassium in the amorphous phase did not appear to affect the reaction rate. 40 refs., 16 figs., 6 tabs.

Mihaela Grigore; Richard Sakurovs; David French; Veena Sahajwalla [Commonwealth Scientific and Industrial Research Organisation (CSIRO), Bangor, NSW (Australia)

2009-04-15T23:59:59.000Z

Note: This page contains sample records for the topic "injection catalytic gasification" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Co-Production of Substitute Natural Gas/Electricity Via Catalytic Coal Gasification  

NLE Websites -- All DOE Office Websites (Extended Search)

9 9 Co-ProduCtion of SubStitute natural GaS / eleCtriCity via CatalytiC Coal GaSifiCation Description The United States has vast reserves of low-cost coal, estimated to be sufficient for the next 250 years. Gasification-based technology, such as Integrated Gasification Combined Cycle (IGCC), is the only environmentally friendly technology that provides the flexibility to co-produce hydrogen, substitute natural gas (SNG), premium hydrocarbon liquids including transportation fuels, and electric power in desired combinations from coal and other carbonaceous feedstocks. Rising costs and limited domestic supply of crude oil and natural gas provide a strong incentive for the development of coal gasification-based co-production processes. This project addresses the co-production of SNG and electricity from coal via gasification

22

Investigation of Coal-biomass Catalytic Gasification using Experiments, Reaction Kinetics, and Computational Fluid Dynamics  

NLE Websites -- All DOE Office Websites (Extended Search)

Coal-biomass Catalytic Coal-biomass Catalytic Gasification using Experiments, Reaction Kinetics, and Computational Fluid Dynamics Background The U.S. Department of Energy (DOE) supports research and development efforts targeted to improve efficiency and reduce the negative environmental effects of the use of fossil fuels. One way to achieve these goals is to combine coal with biomass to create synthesis gas (syngas) for use in turbines and refineries to produce energy, fuels,

23

Application of Nanotechnology for Heavy Oil Upgrading: Catalytic Steam Gasification/Cracking of Asphaltenes  

Science Journals Connector (OSTI)

It is well-known that oilsands processing and production faces several challenges that need to be surmounted to make it an environmentally sound and economically feasible industry. ... In this work, we are exploring a novel method for the elimination of asphaltenes, waste hydrocarbons, by adsorption on nanoparticles and, subsequent, catalytic steam gasification of the adsorbed asphaltenes for synthesis gas production. ...

Nashaat N. Nassar; Azfar Hassan; Pedro Pereira-Almao

2011-03-21T23:59:59.000Z

24

Behavior of chars from Bursa Mustafa Kemal Pasa Alpagut and Balkesir Dursunbey Cakiirca Lignite (Turkey) during non-catalytic and catalytic gasification  

SciTech Connect

The reactivities of chars obtained by pyrolysis of Bursa Mustafa Kemal Pasa Alpagut lignite and Balkesir Dursunbey Cakiirca lignite (Turkey) at different temperatures were determined by CO{sub 2} gasification and by combustion with O{sub 2}. Catalytic effect of Na{sub 2}CO{sub 3} on the CO{sub 2} and O{sub 2} gasification reactivity of chars was investigated. Gasification tests were performed in the fixed bed reactors operating at ambient pressure. Reactivity of chars during the CO{sub 2} gasification reactions was determined by calculating the reaction rate constants and reactivity of chars during the O{sub 2} gasification was determined by using ignition temperatures of the samples. Activation energies and Arrhenius constants of the chars on the CO{sub 2} gasification reactions were also calculated by the help of Arrhenius curves. The activation energy for CO{sub 2} gasification was generally decreased with pyrolysis temperature, due to the different surface characteristics and different nature of carbon atoms gasified as the gasification reactions proceed. Generally, the increase in pyrolysis temperature leads to an increase in gasification reactivity with CO{sub 2}. The reactivity of chars in catalytic gasification was higher than the corresponding non-catalytic reactivity of the same chars. Ignition temperature increased with increasing pyrolysis temperature.

Bozkurt, Y.; Misirlioglu, Z.; Sinag, A.; Tekes, A.T.; Canel, M. [Ankara University, Ankara (Turkey). Dept. of Chemistry

2008-07-01T23:59:59.000Z

25

Integrated catalytic coal devolatilization and steam gasification process  

SciTech Connect

Hydrocarbon liquids and a methane-containing gas are produced from carbonaceous feed solids by contacting the solids with a mixture of gases containing carbon monoxide and hydrogen in a devolatilization zone at a relatively low temperature in the presence of a carbon-alkali metal catalyst. The devolatilization zone effluent is treated to condense out hydrocarbon liquids and at least a portion of the remaining methane-rich gas is steam reformed to produce the carbon monoxide and hydrogen with which the carbonaceous feed solids are contacted in the devolatilization zone. The char produced in the devolatilization zone is reacted with steam in a gasification zone under gasification conditions in the presence of a carbon-alkali metal catalyst and the resultant raw product gas is treated to recover a methane-containing gas.

Ryan, D.F.; Wesselhoft, R.D.

1981-09-29T23:59:59.000Z

26

Staged Catalytic Gasification/Steam Reforming of Pyrolysis Oil  

Science Journals Connector (OSTI)

While the slag can be used in the current industry infrastructure as a construction material, up-scaling of biomass utilization will lead to land depletion because the mineral and metal balances are not closed. ... Table 4 shows gasification results at similar temperatures for two different types of pyrolysis oil (pine and beech) and of another liquid biomass stream, a “light” and a “heavy” sugar waste stream. ... The sugar waste streams that were gasified are a side product from lactic acid production. ...

Guus van Rossum; Sascha R. A. Kersten; Wim P. M. van Swaaij

2009-05-21T23:59:59.000Z

27

Catalytic gasification of glucose to H2 in supercritical water  

Science Journals Connector (OSTI)

Abstract Gasification of glucose in supercritical water with and without catalysts (NaOH and Ni based) was investigated at 400 °C and 500 °C with a residence time of 30 min. The products from glucose gasification without catalyst consist of ~ 8–17 wt.% gas, 21–24 wt.% solid, 9–16 wt.% acetone phase and 8–10 wt.% water phase. As expected, all the gas product yields increased by an increase in process temperature and higher water to biomass ratio benefits the yields of gas phase and water phase. For the experimental runs with catalysts, NaOH had the best activity for improving H2 formation, the H2 yield increased by 135% with NaOH compared to that for run without catalyst at 500 °C with water to biomass ratio of 3. At the same operating conditions, the presence of Ni/activated carbon (AC) contributed to 81% increase in H2 yield, followed by 62% with Ni/MgO, 60% with Ni/CeO2/Al2O3 and 52% with Ni/Al2O3. The net effect of Ni was studied by using activated carbon and Ni/AC at 500 °C with water to biomass ratio of 7 for 30 min. The results showed that the hydrogen production was further increased by 6.9% with activated carbon and 36.9% with Ni/AC.

Ning Ding; Ramin Azargohar; Ajay K. Dalai; Janusz A. Kozinski

2014-01-01T23:59:59.000Z

28

Methods for sulfate removal in liquid-phase catalytic hydrothermal gasification of biomass  

SciTech Connect

Processing of wet biomass feedstock by liquid-phase catalytic hydrothermal gasification must address catalyst fouling and poisoning. One solution can involve heating the wet biomass with a heating unit to a pre-treatment temperature sufficient for organic constituents in the feedstock to decompose, for precipitates of inorganic wastes to form, for preheating the wet feedstock in preparation for subsequent removal of soluble sulfate contaminants, or combinations thereof. Processing further includes reacting the soluble sulfate contaminants with cations present in the feedstock material to yield a sulfate-containing precipitate and separating the inorganic precipitates and/or the sulfate-containing precipitates out of the wet feedstock. Having removed much of the inorganic wastes and the sulfate contaminants that can cause poisoning and fouling, the wet biomass feedstock can be exposed to the heterogenous catalyst for gasification.

Elliott, Douglas C; Oyler, James

2013-12-17T23:59:59.000Z

29

Methods for sulfate removal in liquid-phase catalytic hydrothermal gasification of biomass  

SciTech Connect

Processing of wet biomass feedstock by liquid-phase catalytic hydrothermal gasification must address catalyst fouling and poisoning. One solution can involve heating the wet biomass with a heating unit to a pre-treatment temperature sufficient for organic constituents in the feedstock to decompose, for precipitates of inorganic wastes to form, for preheating the wet feedstock in preparation for subsequent removal of soluble sulfate contaminants, or combinations thereof. Processing further includes reacting the soluble sulfate contaminants with cations present in the feedstock material to yield a sulfate-containing precipitate and separating the inorganic precipitates and/or the sulfate-containing precipitates out of the wet feedstock. Having removed much of the inorganic wastes and the sulfate contaminants that can cause poisoning and fouling, the wet biomass feedstock can be exposed to the heterogeneous catalyst for gasification.

Elliott, Douglas C; Oyler, James R

2014-11-04T23:59:59.000Z

30

Reaction Pathway for Catalytic Gasification of Lignin in Presence of Sulfur in Supercritical Water  

Science Journals Connector (OSTI)

Generally, very high temperatures of over 1073 K are needed for steam reformation of the lignin in the gasification process.1 Hence, low-temperature methods for lignin gasification are the most desirable, so that the waste heat from high-temperature processes in industry can be utilized for energy generation. ... While in the presence of the Ru/TiO2 catalyst, formaldehyde was completely gasified in supercritical water, similar to the gasification of lignin and 4-propylphenol. ... water for gasification technique of wastes. ...

Mitsumasa Osada; Norihito Hiyoshi; Osamu Sato; Kunio Arai; Masayuki Shirai

2007-06-13T23:59:59.000Z

31

Chemical Processing in High-Pressure Aqueous Environments. 7. Process Development for Catalytic Gasification of Wet Biomass Feedstocks  

Science Journals Connector (OSTI)

7. Process Development for Catalytic Gasification of Wet Biomass Feedstocks ... 4 Here we report the preliminary results of continuous-flow reactor studies with wet biomass feedstocks using new catalyst systems developed specifically for these processing conditions. ... Developing catalysts for this processing environment has also been an important factor in making this processing technology viable.2 Previous reports of continuous reactor tests with biomass feedstocks provide preliminary short-term processing results,8,9 but also show the problems of long-term operation of the process with the contaminants inherent in biomass. ...

Douglas C. Elliott; Gary G. Neuenschwander; Todd R. Hart; R. Scott Butner; Alan H. Zacher; Mark H. Engelhard; James S. Young; David E. McCready

2004-03-25T23:59:59.000Z

32

Catalytic Air Gasification of Plastic Waste (Polypropylene) in a Fluidized Bed. Part II: Effects of Some Operating Variables on the Quality of the Raw Gas Produced Using Olivine as the In-Bed Material  

Science Journals Connector (OSTI)

Catalytic Air Gasification of Plastic Waste (Polypropylene) in a Fluidized Bed. ... Wu et al.(11) reported a process involving pyrolysis combined with catalytic steam gasification for postconsumer plastic wastes, mixed plastics, and real-world plastic wastes. ... In this case, the plastic waste was composed of a mixture of PE and PP (50 wt %) from the car industry. ...

José M. Toledo; María P. Aznar; Jesús A. Sancho

2011-09-26T23:59:59.000Z

33

Fluidized-bed catalytic coal-gasification process. [US patent; pretreatment to minimize agglomeration  

DOE Patents (OSTI)

Coal or similar carbonaceous solids impregnated with gasification catalyst constituents are oxidized by contact with a gas containing between 2 vol % and 21 vol % oxygen at a temperature between 50 and 250/sup 0/C in an oxidation zone and the resultant oxidized, catalyst impregnated solids are then gasified in a fluidized bed gasification zone at an elevated pressure. The oxidation of the catalyst impregnated solids under these conditions insures that the bed density in the fluidized bed gasification zone will be relatively high even though the solids are gasified at elevated pressure and temperature.

Euker, C.A. Jr.; Wesselhoft, R.D.; Dunkleman, J.J.; Aquino, D.C.; Gouker, T.R.

1981-09-14T23:59:59.000Z

34

Catalytic conversion of methane over a biomass char for hydrogen production: deactivation and regeneration by steam gasification  

Science Journals Connector (OSTI)

Abstract CH4 decomposition over a wood char was investigated as an alternative green catalyst to produce hydrogen from hydrocarbons. Pyrolytic carbon (pyrocarbon) deposition leads to apparent deactivation of the catalyst by pore-mouth plugging. The activity of the carbon bed and its available surface area is easily restored by H2O gasification. The used char with pyrocarbon deposition was even found to be more reactive to gasification than the fresh char used in our conditions. This finding was highlighted by: (i) determination of gasification reaction extents by steam, (ii) temperature-programmed oxidation (TPO) of the fresh, used and reactivated chars, (iii) TPO under Differential Scanning Calorimetry of these chars and demineralised chars. High Resolution Transmission Electron Microscope (HRTEM) analysis of the chars showed different multiscale organisation of the carbon materials (disordered and graphitic mesoporous nanostructures). The fast regeneration of the used char could be attributed to the catalytic effect of the minerals present in the char that are reduced under our conditions of CH4 conversion. The predominant oxidation of the pyrocarbon compared to the char during its regeneration is evidenced through differential annealing (at 1800 °C) followed by XRD analysis. The oxidation of pyrocarbon is faster than the oxidation of the weakly reactive mesoporous carbon in char as shown by the HRTEM analysis. Consequently, wood char is an effective, easy to regenerate, and cheap catalyst for converting hydrocarbons (CH4 or tar) into syngas.

A. Dufour; A. Celzard; V. Fierro; F. Broust; C. Courson; A. Zoulalian; J.N. Rouzaud

2014-01-01T23:59:59.000Z

35

Examination of Kinetics of Non-catalytic Steam Gasification of Biomass/Lignite Chars and Its Relationship with the Variation of the Pore Structure  

Science Journals Connector (OSTI)

Examination of Kinetics of Non-catalytic Steam Gasification of Biomass/Lignite Chars and Its Relationship with the Variation of the Pore Structure ... Biomass and lignite are attractive as feedstocks in light of the renewable nature and large reserves, respectively. ...

Shinji Kudo; Yasuyo Hachiyama; Hyun-Seok Kim; Koyo Norinaga; Jun-ichiro Hayashi

2014-08-19T23:59:59.000Z

36

Evaluation of Catalytic Effects in Gasification of Biomass at Intermediate Temperature and Pressure  

Science Journals Connector (OSTI)

This paper proposes and examines an alternative thermo-chemical process for biomethane production from lignocellulosic biomass, termed self-gasification. ... This paper introduces a new process for the production of biomethane. ... Biomethane can be used as a fuel for heat and power generation. ...

Pavlina Nanou; Guus van Rossum; Wim P. M. van Swaaij; Sascha R. A. Kersten

2011-02-17T23:59:59.000Z

37

Catalytic steam gasification of carbon: Final report, 3/1/84-2/28/87  

SciTech Connect

Work for this grant period covers two areas: formation of coke on the platinum surface of reforming catalysts, and the preparation, surface reactivity, and catalytic activity of high specific surface area molybdenum and tungsten carbides.

Boudart, M.

1987-01-01T23:59:59.000Z

38

Investigations on catalyzed steam gasification of biomass: feasibility study of methane production via catalytic gasification of 200 tons of wood per day  

SciTech Connect

This report is a result of an additional study made of the economic feasibility of producing substitute natural gas (SNG) from wood via catalytic gasification with steam. The report has as its basis the original 2000 tons of wood per day study generated from process development unit testing performed by the Pacific Northwest Laboratory. The goal of this additional work was to determine the feasibility of a smaller scale plant one-tenth the size of the original or 200 tons of dry wood feed per day. Plant production based on this wood feed is 2.16 MM Scfd of SNG with a HHV of 956 Btu per Scf. All process and support facilities necessary to convert wood to SNG are included in this study. The plant location is Newport, Oregon. The capital cost for the plant is $26,680,000 - September 1980 basis. Gas production costs which allow for return on capital have been calculated for various wood prices for both utility and private investor financing. These wood prices represent the cost of unchipped wood delivered to the plant site. For utility financing, the gas production costs are, respectively, $14.34, $14.83, $15.86, and $17.84 per MM Btu for wood costs of $5, $10, $20, and $40 per dry ton. For private investor financing, the corresponding product costs are $18.76, $19.26, $20.28, and $22.31 per MM Btu for the corresponding wood costs. The costs calculated by the utility financing method includes a return on equity of 15% and an interest rate of 10% on the debt. The private investor financing method, which is 100% equity financing, incorporates a discounted cash flow (DCF) return on equity of 12%. The thermal efficiency without taking an energy credit for char is 57.4%.

Mudge, L.K.; Weber, S.L.; Mitchell, D.H.; Sealock, L.J. Jr.; Robertus, R.J.

1981-01-01T23:59:59.000Z

39

Investigations on catalyzed steam gasification of biomass. Appendix A. Feasibility study of methane production via catalytic gasification of 2000 tons of wood per day  

SciTech Connect

A study has been made of the economic feasibility of producing substitute natural gas (SNG) from wood via catalytic gasification with steam. The plant design in this study was developed from information on gasifier operation supplied by the Pacific Northwest Laboratory (PNL). The plant is designed to process 2000 tons per day of dry wood to SNG. Plant production is 21.6 MM scfd of SNG with a HHV of 956 Btu per scf. All process and support facilities necessary to convert wood to SNG are included. The plant location is Newport, Oregon. The capital cost for the plant is $95,115,000 - September, 1980 basis. Gas production costs which allow for return on capital have been calculated for various wood prices for both utility and private investor financing. For utility financing, the gas production costs are respectively $5.09, $5.56, $6.50, and $8.34 per MM Btu for wood costs of $5, $10, $20, and $40 per dry ton delivered to the plant at a moisture content of 49.50 wt %. For private investor financing, the corresponding product costs are $6.62, $7.11, $8.10, and $10.06 per MM Btu. The cost calculated by the utility financing method includes a return on equity of 15% and an interest rate of 10% on the debt. The private investor financing method, which is 100% equity financing, incorporates a discounted cash flow (DCF) return on equity of 12%. The thermal efficiency without taking an energy credit for by-product char is 58.3%.

Mudge, L.K.; Weber, S.L.; Mitchell, D.H.; Sealock, L.J. Jr.; Robertus, R.J.

1981-01-01T23:59:59.000Z

40

Gasification of Canola Meal and Factors Affecting Gasification Process  

Science Journals Connector (OSTI)

Non-catalytic gasification of canola meal for the production of ... in order to study the effects of different gasification parameters on gas composition, H2/CO ratio, gas yield, syngas yield, lower heating value...

Ashwini Tilay; Ramin Azargohar; Regan Gerspacher; Ajay Dalai…

2014-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "injection catalytic gasification" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Gasification system  

DOE Patents (OSTI)

A method and system for injecting coal and process fluids into a fluidized bed gasification reactor. Three concentric tubes extend vertically upward into the fluidized bed. Coal particulates in a transport gas are injected through an inner tube, and an oxygen rich mixture of oxygen and steam are injected through an inner annulus about the inner tube. A gaseous medium relatively lean in oxygen content, such as steam, is injected through an annulus surrounding the inner annulus.

Haldipur, Gaurang B. (Hempfield, PA); Anderson, Richard G. (Penn Hills, PA); Cherish, Peter (Bethel Park, PA)

1985-01-01T23:59:59.000Z

42

Gasification system  

DOE Patents (OSTI)

A method and system for injecting coal and process fluids into a fluidized bed gasification reactor. Three concentric tubes extend vertically upward into the fluidized bed. Coal particulates in a transport gas are injected through an inner tube, and an oxygen rich mixture of oxygen and steam are injected through an inner annulus about the inner tube. A gaseous medium relatively lean in oxygen content, such as steam, is injected through an annulus surrounding the inner annulus.

Haldipur, Gaurang B. (Hempfield, PA); Anderson, Richard G. (Penn Hills, PA); Cherish, Peter (Bethel Park, PA)

1983-01-01T23:59:59.000Z

43

Kinetics Of Carbon Gasification  

Science Journals Connector (OSTI)

Kinetics Of Carbon Gasification ... The steam–carbon reaction, which is the essential reaction of the gasification processes of carbon-based feed stocks (e.g., coal and biomass), produces synthesis gas (H2 + CO), a synthetically flexible, environmentally benign energy source. ... Coal Gasification in CO2 and Steam:? Development of a Steam Injection Facility for High-Pressure Wire-Mesh Reactors ...

C. W. Zielke; Everett. Gorin

1957-03-01T23:59:59.000Z

44

Effect of steam partial pressure on gasification rate and gas composition of product gas from catalytic steam gasification of HyperCoal  

SciTech Connect

HyperCoal was produced from coal by a solvent extraction method. The effect of the partial pressure of steam on the gasification rate and gas composition at temperatures of 600, 650, 700, and 750{sup o}C was examined. The gasification rate decreased with decreasing steam partial pressure. The reaction order with respect to steam partial pressure was between 0.2 and 0.5. The activation energy for the K{sub 2}CO{sub 3}-catalyzed HyperCoal gasification was independent of the steam partial pressure and was about 108 kJ/mol. The gas composition changed with steam partial pressure and H{sub 2} and CO{sub 2} decreased and CO increased with decreasing steam partial pressure. By changing the partial pressure of the steam, the H{sub 2}/CO ratio of the synthesis gas can be controlled. 18 refs., 7 figs., 2 tabs.

Atul Sharma; Ikuo Saito; Toshimasa Takanohashi [National Institute of Advanced Industrial Science and Technology, Ibaraki (Japan). Advanced Fuel Group

2009-09-15T23:59:59.000Z

45

Catalytic steam gasification reactivity of HyperCoals produced from different rank of coals at 600-775{degree}C  

SciTech Connect

HyperCoal is a clean coal with ash content <0.05 wt %. HyperCoals were prepared from a brown coal, a sub-bituminous coal, and a bituminous raw coal by solvent extraction method. Catalytic steam gasification of these HyperCoals was carried out with K{sub 2}CO{sub 3} at 775, 700, 650, and 600 {degree}C, and their rates were compared. HyperCoals produced from low-rank coals were more reactive than those produced from the high-rank coals. XRD measurements were carried out to understand the difference in gasification reactivity of HyperCoals. Arrhenius plot of ln (k) vs 1/T in the temperature range 600-825{degree}C was a curve rather than a straight line. The point of change was observed at 700{degree}C for HyperCoals from low-rank coals and at 775{degree}C for HyperCoals from high-rank coals. Using HyperCoal produced from low-rank coals as feedstock, steam gasification of coal may be possible at temperatures less than 650{degree}C. 22 refs., 6 figs., 2 tabs.

Atul Sharma; Ikuo Saito; Toshimasa Takanohashi [National Institute of Advanced Industrial Science and Technology, Ibaraki (Japan). Advanced Fuel Group, Energy Technology Research Institute

2008-11-15T23:59:59.000Z

46

NETL: Gasification Archived Projects  

NLE Websites -- All DOE Office Websites (Extended Search)

Home > Technologies > Coal & Power Systems > Gasification Systems > Reference Shelf > Archived Projects Home > Technologies > Coal & Power Systems > Gasification Systems > Reference Shelf > Archived Projects Gasification Systems Reference Shelf - Archived Projects Archived Projects | Active Projects | All NETL Fact Sheets Feed Systems Reaction-Driven Ion Transport Membranes Gasifier Optimization and Plant Supporting Systems Coal/Biomass Gasification at Colorado School of Mines Co-Production of Electricity and Hydrogen Using a Novel Iron-Based Catalyst Co-Production of Substitute Natural Gas/Electricity via Catalytic Coal Gasification Development of a Hydrogasification Process for Co-Production of Substitute Natural Gas (SNG) and Electric Power from Western Coals Hybrid Combustion-Gasification Chemical Looping Coal Power Technology Development

47

Investigation of the Gasification Performance of Lignite Feedstock and the Injection Design of a Cross-Type Two-Stage Gasifier  

Science Journals Connector (OSTI)

Investigation of the Gasification Performance of Lignite Feedstock and the Injection Design of a Cross-Type Two-Stage Gasifier ... Compared to the other fossil-fuel resources such as crude oil and natural gas, coal has the largest reserves and least expensive price for producing electricity. ... Since the feedstock price per unit syngas energy is cheaper for lignites, gasifying lignites is attractive for electricity production. ...

Yau-Pin Chyou; Ming-Hong Chen; Yan-Tsan Luan; Ting Wang

2013-05-24T23:59:59.000Z

48

Catalytic Air Gasification of Plastic Waste (Polypropylene) in Fluidized Bed. Part I:? Use of in-Gasifier Bed Additives  

Science Journals Connector (OSTI)

In this case, plastic waste was composed of a mixture of PE and PP (50 wt %) from the car industry. ... There are also some studies on the gasification of wastes containing PVC with steam13 and with [steam + O2].14 Besides, other technologies are appearing in this field such as the cogasification of waste tires and PET using the solar thermochemical process. ... Starting the working conditions for gasifying waste blends contg. ...

Jesús A. Sancho; María P. Aznar; José M. Toledo

2008-01-19T23:59:59.000Z

49

BOUNDARY LAYER CONTROL IN PIPES THROUGH STRONG INJECTION  

E-Print Network (OSTI)

normal-injection model. y Coal gasification gas mixture ,ZUSAMMENFASSUNG) In coal gasification, oxidation andthan that in the coal gasification mixture. Outside the

Yeung, William Chor Chun

2014-01-01T23:59:59.000Z

50

EIS-0428: Mississippi Gasification, LLC, Industrial Gasification...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

8: Mississippi Gasification, LLC, Industrial Gasification Facility in Moss Point, MS EIS-0428: Mississippi Gasification, LLC, Industrial Gasification Facility in Moss Point, MS...

51

NETL: Gasification  

NLE Websites -- All DOE Office Websites (Extended Search)

Syngas Cleanup: Syngas Contaminant Removal and Conditioning Syngas Cleanup: Syngas Contaminant Removal and Conditioning Acid Gas Removal (AGR) Acid gases produced in gasification processes mainly consist of hydrogen sulfide (H2S), carbonyl sulfide (COS), and carbon dioxide (CO2). Syngas exiting the particulate removal and gas conditioning systems, typically near ambient temperature at 100°F, needs to be cleaned of the sulfur-bearing acid gases to meet either environmental emissions regulations, or to protect downstream catalysts for chemical processing applications. For integrated gasification combined cycle (IGCC) applications, environmental regulations require that the sulfur content of the product syngas be reduced to less than 30 parts per million by volume (ppmv) in order to meet the stack gas emission target of less than 4 ppmv sulfur dioxide (SO2)1. In IGCC applications, where selective catalytic reduction (SCR) is required to lower NOx emissions to less than 10 ppmv, syngas sulfur content may have to be lowered to 10 to 20 ppmv in order to prevent ammonium bisulfate fouling of the heat recovery steam generator's (HRSG) cold end tubes. For fuels production or chemical production, the downstream synthesis catalyst sulfur tolerance dictates the sulfur removal level, which can be less than 0.1 ppmv.

52

NETL: Gasification  

NLE Websites -- All DOE Office Websites (Extended Search)

Gasification Background Gasification Background Challenges for Gasification The widespread market penetration of gasification continues to face some challenges. Over the years, gasification challenges related to gasifier and supporting unit availability, operability, and maintainability have been addressed with substantial success, and new implementations of gasification will continue to improve in this area. At present, perhaps the most significant remaining challenge is the relatively high capital costs of gasification plants, particularly given the low capital investment required for NGCC-based power production combined with low natural gas prices currently being experienced in the domestic market. Accordingly, technology that can decrease capital costs of gasification systems and plant supporting systems will be most important towards further deployment of gasification.

53

Biomass Gasification with Steam and Oxygen Mixtures at Pilot Scale and with Catalytic Gas Upgrading. Part I: Performance of the Gasifier  

Science Journals Connector (OSTI)

Biomass gasification with steam + O2...mixtures is studied at small pilot plant (10–20 kg/h) scale. The gasifier used is a turbulent fluidized bed of ... tested till date. Product distribution from the gasifier, ...

M. P. Aznar; J. Corella; J. Gil…

1997-01-01T23:59:59.000Z

54

Improved catalysts for carbon and coal gasification  

DOE Patents (OSTI)

This invention relates to improved catalysts for carbon and coal gasification and improved processes for catalytic coal gasification for the production of methane. The catalyst is composed of at least two alkali metal salts and a particulate carbonaceous substrate or carrier is used. 10 figures, 2 tables.

McKee, D.W.; Spiro, C.L.; Kosky, P.G.

1984-05-25T23:59:59.000Z

55

Catalysts for carbon and coal gasification  

DOE Patents (OSTI)

Catalyst for the production of methane from carbon and/or coal by means of catalytic gasification. The catalyst compostion containing at least two alkali metal salts. A particulate carbonaceous substrate or carrier is used.

McKee, Douglas W. (Burnt Hills, NY); Spiro, Clifford L. (Scotia, NY); Kosky, Philip G. (Schenectady, NY)

1985-01-01T23:59:59.000Z

56

Chapter 5 - Gasification Processes  

Science Journals Connector (OSTI)

Publisher Summary There is a broad range of reactor types that are used in the practical realization of the gasification process. For most purposes, these reactor types can be grouped into one of three categories: moving-bed gasifiers, fluid-bed gasifiers, and entrained-flow gasifiers. Moving-bed processes are the oldest processes, and two processes in particular, the producer gas process and the water gas process, have played an important role in the production of synthesis gas from coal and coke. In moving bed processes, there are the sasol-lurgi dry bottom process, British Gas/Lurgi (BGL) slagging gasifier, that are detailed in the chapter along with their applications. Following this, fluid-bed processes are discussed in which the blast has two functions: that of blast as a reactant and that of the fluidizing medium for the bed. The best known fluid-bed gasifiers that have no tar problem are regenerators of catalytic cracking units that often operate under reducing, that is, gasification conditions that can be found in many refineries. HRL process, BHEL gasifier, circulating fluidized-bed (CFB) processes, the KBR transport gasifier, agglomerating fluid-bed processes, the Pratt & Whitney Rocketdyne (PWR) gasifier, the GEE gasification process, the Shell Gasification Process (SGP), Lurgi’ s Multi-Purpose Gasification process (MPG), etc. are the various processes discussed in the chapter.

Christopher Higman; Maarten van der Burgt

2008-01-01T23:59:59.000Z

57

Coal Gasification  

Energy.gov (U.S. Department of Energy (DOE))

DOE's Office of Fossil Energy supports activities to advance coal-to-hydrogen technologies, specifically via the process of coal gasification with sequestration. DOE anticipates that coal...

58

Chapter 2 - Black Liquor Gasification  

Science Journals Connector (OSTI)

Black liquor gasification (BLG) is being considered primarily as an option for production of biofuels in recent years due to the focus on the transport sector’s high oil dependence and climate impact. BLG may be performed either at low temperatures or at high temperatures, based on whether the process is conducted above or below the melting temperature range of the spent pulping chemicals. The development of various BLG technologies—SCA-Billerud process, the Copeland recovery process, Weyerhaeuser’s process, the St. Regis hydropyrolysis process, the Texaco process, VTT’s circulating fluidized bed BLG process, Babcock and Wilcox’s bubbling fluidized bed gasification process, NSP process (Ny Sodahus Process), DARS (Direct Alkali Recovery System) process, BLG with direct causticization, Manufacturing and Technology Conversion International fluidized bed gasification, Chemrec gasification, catalytic hydrothermal gasification of black liquor—is discussed in this chapter. The two main technologies under development are pressurized gasification and atmospheric gasification, being commercialized by Chemrec AB and ThermoChem Recovery International, respectively.

Pratima Bajpai

2014-01-01T23:59:59.000Z

59

NETL: Gasification  

NLE Websites -- All DOE Office Websites (Extended Search)

Hydrogen: SNG from Coal: Process & Commercialization Hydrogen: SNG from Coal: Process & Commercialization Weyburn Project The Great Plains Synfuels Plant (GPSP) has had the ability to capture CO2 through the Rectisol process for sequestration or sale as a byproduct. However, no viable market was found for the CO2 in the early years of operation, and the captured CO2 was simply discharged to the atmosphere. This changed in 2000, when the GPSP began selling CO2 emissions, becoming one of the first commercial coal facilities to have its CO2 sequestered. The program had begun in 1997, when EnCana (formerly PanCanadian Resources) sought a solution to declining production in their Weyburn Oil Fields. Dakota Gasification Company, owners of the GPSP, and EnCana made an agreement to sell CO2 for use in Enhanced Oil Recovery (EOR). DGC installed two large CO2 compressors and began shipping 105 million standard cubic feet per day of compressed CO2 (60% of the total CO2 produced at the plant) through a 205 mile pipeline from Beulah, North Dakota, to the Weyburn Oil Fields, located in Saskatchewan, Canada, for EOR. The pipeline was constructed and operated by a BEPC subsidiary. The CO2, about 95.5% pure and very dry, is injected into the mature fields where it has doubled the oil recovery rate of the field. In 2006, a third compressor was installed and an additional agreement was reached with Apache Canada Ltd. to supply CO2 for EOR to their nearby oilfields. The three compressors increased CO2 delivery to 160 million standard cubic feet (MMSCF; or 8,000 tonnes) per day. Through 2007, over 12 million tons of CO2 had been sold, and over the current expected lifetime of the program, an anticipated 20 million tons of CO2 will be stored.

60

NETL: Gasification  

NLE Websites -- All DOE Office Websites (Extended Search)

Gasifier: Commercial Gasifiers Gasifier: Commercial Gasifiers Gasifiers and Impact of Coal Rank and Coal Properties The available commercial gasification technologies are often optimized for a particular rank of coal or coal properties, and in some cases, certain ranks of coal might be unsuitable for utilization in a given gasification technology. On the other hand, there is considerable flexibility in most of the common gasifiers; this is highlighted by the following table, which provides an overview of the level of experience for the various commercially available gasifiers by manufacturer for each coal type. This experience will only continue to expand as more gasification facilities come online and more demonstrations are completed. SOLID FUEL GASIFICATION EXPERIENCE1 High Ash Coals

Note: This page contains sample records for the topic "injection catalytic gasification" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Gasification Plant Databases  

NLE Websites -- All DOE Office Websites (Extended Search)

coal gasification projects throughout the world. These databases track proposed gasification projects with approximate outputs greater than 100 megawatts electricity...

62

Gasification Plant Databases  

NLE Websites -- All DOE Office Websites (Extended Search)

Gasification Plant Databases News Gasifipedia Gasifier Optimization Feed Systems Syngas Processing Systems Analyses Gasification Plant Databases International Activity Program Plan...

63

NETL: Coal Gasification Systems  

NLE Websites -- All DOE Office Websites (Extended Search)

Coal Gasification Systems News Gasifipedia Gasifier Optimization Feed Systems Syngas Processing Systems Analyses Gasification Plant Databases International Activity Program Plan...

64

Gasification Systems Project Portfolio  

NLE Websites -- All DOE Office Websites (Extended Search)

2014 Gasification Systems Project Portfolio News Gasifipedia Gasifier Optimization Feed Systems Syngas Processing Systems Analyses Gasification Plant Databases International...

65

In situ catalytic conversion of tar using rice husk char/ash supported nickel–iron catalysts for biomass pyrolytic gasification combined with the mixing-simulation in fluidized-bed gasifier  

Science Journals Connector (OSTI)

Abstract A catalytic gasification technology has been proposed for tar in situ conversion using the rice husk char (RHC) or rice husk ash (RHA) supported nickel–iron catalysts. Biomass tar could be converted effectively by co-pyrolysis with the RHC/RHA supported nickel–iron catalysts at 800 °C, simplifying the follow-up tar removal process. Under the optimized conditions, the tar conversion efficiency could reach about 92.3% by the RHC Ni–Fe, which exhibited more advantages of easy preparation and energy-saving. In addition, the tar conversion efficiency could reach about 93% by the RHA Ni. Significantly, partial metal oxides (e.g., NiO, Fe2O3) in the carbon matrix of RHC could be in-situ carbothermally reduced into the metallic state (e.g., Ni0) by reducing gases (e.g., CO) or carbon atom, thereby enhancing the catalytic performance of tar conversion. Furthermore, mixing with other solid particles such as sand and RHA Ni, can also improve biomass (e.g., RH) fluidization behavior by optimizing the operation parameters (e.g., particle size, mass fraction) in the mode of fluidized bed gasifier (FBG). After the solid–solid mixing simulation, the RH mass fraction of 0.5 and the particle diameter of 0.5 mm can be employed in the binary mixture of RH and RHA.

Yafei Shen; Peitao Zhao; Qinfu Shao; Fumitake Takahashi; Kunio Yoshikawa

2014-01-01T23:59:59.000Z

66

NETL: Gasification  

NLE Websites -- All DOE Office Websites (Extended Search)

Coal: Alternatives/Supplements to Coal - Feedstock Flexibility Coal: Alternatives/Supplements to Coal - Feedstock Flexibility As important as coal is as a primary gasification feedstock, gasification technology offers the important ability to take a wide range of feedstocks and process them into syngas, from which a similarly diverse number of end products are possible. Gasifiers have been developed to suit all different ranks of coal, and other fossil fuels, petcoke and refinery streams, biomass including agricultural waste, and industrial and municipal waste. The flexibility stems from the ability of gasification to take any carbon and hydrogen containing feedstock and then thermochemically break down the feedstock to a gas containing simple compounds which are easy to process into several marketable products.

67

NETL: Gasification  

NLE Websites -- All DOE Office Websites (Extended Search)

Oxygen Oxygen Commercial Technologies for Oxygen Production Gasification processes require an oxidant, most commonly oxygen; less frequently air or just steam may suffice as the gasification agent depending on the process. Oxygen-blown systems have the advantage of minimizing the size of the gasification reactor and its auxiliary process systems. However, the oxygen for the process must be separated from the atmosphere. Commercial large-scale air separation plants are based on cryogenic distillation technology, capable of supplying oxygen at high purity1 and pressure. This technology is well understood, having been in practice for over 75 years. Cryogenic air separation is recognized for its reliability, and it can be designed for high capacity (up to 5,000 tons per day).

68

NETL: Gasification  

NLE Websites -- All DOE Office Websites (Extended Search)

Gasifipedia > Feedstock Flexibility > Refinery Streams Gasifipedia > Feedstock Flexibility > Refinery Streams Gasifipedia Coal: Feedstock Flexibility Refinery Streams Gasification is a known method for converting petroleum coke (petcoke) and other refinery waste streams and residuals (vacuum residual, visbreaker tar, and deasphalter pitch) into power, steam and hydrogen for use in the production of cleaner transportation fuels. The main requirement for a gasification feedstock is that it contains both hydrogen and carbon. Below is a table that shows the specifications for a typical refinery feedstock. Specifications for a typical refinery feedstock A number of factors have increased the interest in gasification applications in petroleum refinery operations: Coking capacity has increased with the shift to heavier, more sour crude oils being supplied to the refiners.

69

Entrainment Coal Gasification Modeling  

Science Journals Connector (OSTI)

Entrainment Coal Gasification Modeling ... Equivalent Reactor Network Model for Simulating the Air Gasification of Polyethylene in a Conical Spouted Bed Gasifier ... Equivalent Reactor Network Model for Simulating the Air Gasification of Polyethylene in a Conical Spouted Bed Gasifier ...

C. Y. Wen; T. Z. Chaung

1979-10-01T23:59:59.000Z

70

Gasification Systems  

NLE Websites -- All DOE Office Websites (Extended Search)

GASIFICATION SYSTEMS GASIFICATION SYSTEMS U.S. DEPARTMENT OF ENERGY TECHNOLOGY PROGRAM PLAN PREFACE ii DISCLAIMER This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference therein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any

71

NETL: Gasification  

NLE Websites -- All DOE Office Websites (Extended Search)

Usage in Coal to Electrical Applications Usage in Coal to Electrical Applications The Integrated Gasification Combined Cycle (IGCC) application of gasification offers some water-saving advantages over other technologies for producing electricity from coal. Regions with limited water resources, typical of many parts of the western United States, could conserve resources by meeting increasing electricity demand with IGCC generation. Many of these areas have good coal resources and a need for new generating capacity. Water use in a thermoelectric power plant is described by two separate terms: water withdrawal and water consumption. Water withdrawal is the amount of water taken into the plant from an outside source. Water consumption refers to the portion of the withdrawn water that is not returned directly to the outside source - for example, water lost to evaporative cooling.

72

NETL: Gasification  

NLE Websites -- All DOE Office Websites (Extended Search)

CO2: CO2 Capture: Impacts on IGCC Plant Designs CO2: CO2 Capture: Impacts on IGCC Plant Designs Specific Impacts on IGCC Plant Designs from CO2 Capture In foregoing discussion, results of NETL's comprehensive study comparing the performance and cost of various fossil fuel-based power generation technologies with and without CO2 capture were reviewed. Of particular interest in that study was the companion set of integrated gasification combined cycle (IGCC) designs, using GE's gasification technology, which can be used to illustrate the design changes needed for CO2 capture. Current Technology - IGCC Plant Design Figure 1 shows a simplified block flow diagram (BFD) of a market-ready IGCC design without CO2 capture. As shown, the IGCC plant consists of the following processing islands, of which a more detailed description of each can be found in the cited NETL referenced report: 1

73

NETL: Gasification  

NLE Websites -- All DOE Office Websites (Extended Search)

Conditioning Conditioning Sulfur Recovery and Tail Gas Treating Sulfur is a component of coal and other gasification feed stocks. Sulfur compounds need to be removed in most gasification applications due to environmental regulations or to avoid catalyst poisoning. Whether it is electricity, liquid fuels, or some other product being output, sulfur emissions are regulated, and sulfur removal is important for this reason, along with the prevention of downstream component fouling. In addition to these constraints, recovering saleable sulfur is an important economic benefit for a gasification plant. To illustrate the previous point, in 2011 8.1 million tons of elemental sulfur was produced, with the majority of this coming from petroleum refining, natural gas processing and coking plants. Total shipments were valued at $1.6 billion, with the average mine or plant price of $200 per ton, up from $70.48 in 2010. The United States currently imports sulfur (36% of consumption, mostly from Canada), meaning the market can support more domestic sulfur production.

74

2007 gasification technologies conference papers  

SciTech Connect

Sessions covered: gasification industry roundtable; the gasification market in China; gasification for power generation; the gasification challenge: carbon capture and use storage; industrial and polygeneration applications; gasification advantage in refinery applications; addressing plant performance; reliability and availability; gasification's contribution to supplementing gaseous and liquid fuels supplies; biomass gasification for fuel and power markets; and advances in technology-research and development

NONE

2007-07-01T23:59:59.000Z

75

NETL: Gasification  

NLE Websites -- All DOE Office Websites (Extended Search)

Power: Typical IGCC Configuration Power: Typical IGCC Configuration Major Commercial Examples of IGCC Plants While there are many coal gasification plants in the world co-producing electricity, chemicals and/or steam, the following are four notable, commercial-size IGCC plants currently in operation solely for producing electricity from coal and/or coke. Tampa Electric, Polk County 250 MW GE Gasifier Wabash, West Terre Haute 265 MW CoP E-Gas(tm) Gasifier Nuon, Buggenum 250 MW Shell Gasifier Elcogas, Puertollano 300 MW Prenflo Gasifier All of the plants began operation prior to 2000 and employ high temperature entrained-flow gasification technology. GE (formerly Texaco-Chevron) and ConocoPhillips (CoP) are slurry feed gasifiers, while Shell and Prenflo are dry feed gasifiers. None of these plants currently capture carbon dioxide (CO2). A simplified process flow diagram of the 250-MW Tampa Electric IGCC plant is shown in Figure 1 to illustrate the overall arrangement of an operating commercial scale IGCC plant. The Tampa Electric plant is equipped with both radiant and convective coolers for heat recovery, generating high pressure (HP) steam.

76

Biothermal gasification of biomass  

SciTech Connect

The BIOTHERMGAS Process is described for conversion of biomass, organic residues, and peat to substitute natural gas (SNG). This new process, under development at IGT, combines biological and thermal processes for total conversion of a broad variety of organic feeds (regardless of water or nutrient content). The process employs thermal gasification for conversion of refractory digester residues. Ammonia and other inorganic nutrients are recycled from the thermal process effluent to the bioconversion unit. Biomethanation and catalytic methanation are presented as alternative processes for methanation of thermal conversion product gases. Waste heat from the thermal component is used to supply the digester heat requirements of the bioconversion component. The results of a preliminary systems analysis of three possible applications of this process are presented: (1) 10,000 ton/day Bermuda grass plant with catalytic methanation; (2) 10,000 ton/day Bermuda grass plant with biomethanation; and (3) 1000 ton/day municipal solid waste (MSW) sewage sludge plant with biomethanation. The results indicate that for these examples, performance is superior to that expected for biological or thermal processes used separately. The results of laboratory studies presented suggest that effective conversion of thermal product gases can be accomplished by biomethanation.

Chynoweth, D.P.; Srivastava, V.J.; Henry, M.P.; Tarman, P.B.

1980-01-01T23:59:59.000Z

77

NETL: Gasification  

NLE Websites -- All DOE Office Websites (Extended Search)

Major Partner Test Sites Major Partner Test Sites Gasification Systems Technologies - Major Partner Test Sites Major Partner Test Sites Once a technology is ready to be tested at pilot or commercial scale, the cost of building a test facility becomes significant -- often beyond the funding provided for any one project. It then becomes critical to test the technology at a pre-existing facility willing to test experimental technologies. Not surprisingly, most commercial facilities are hesitant to interfere with their operations to experiment, but others, with a view towards the future, welcome promising technologies. Below is a list of major partner test sites that actively host DOE supported research activities. Many of the test sites were built with DOE support, but many were not. Some are commercial, and were designed to perform experimental work. All play an important role in developing technologies with minimal expense to the project, and to the U.S. taxpayer.

78

NETL: Gasification  

NLE Websites -- All DOE Office Websites (Extended Search)

Capture R&D Capture R&D DOE/NETL's pre-combustion CO2 control technology portfolio of R&D projects is examining various CO2 capture technologies, and supports identification of developmental pathways linking advanced fossil fuel conversion and CO2 capture. The Program's CO2 capture activity is being conducted in close coordination with that of advanced, higher-efficiency power generation and fossil fuel conversion technologies such as gasification. Links to the projects can be found here. Finally, an exhaustive and periodically updated report on CO2 capture R&D sponsored by NETL is available: DOE/NETL Advanced CO2 Capture R&D Program: Technology Update (also referred to as the CO2 Handbook). Carbon Dioxide CO2 Capture Commercial CO2 Uses & Carbon Dioxide Enhanced Oil Recovery

79

Gasification Research BIOENERGY PROGRAM  

E-Print Network (OSTI)

Gasification Research BIOENERGY PROGRAM Description Researchers inthe@tamu.edu Skid-mounted gasifier: 1.8 tons-per-day pilot unit Gasification of cotton gin trash The new Texas A

80

Gasification: redefining clean energy  

SciTech Connect

This booklet gives a comprehensive overview of how gasification is redefining clean energy, now and in the future. It informs the general public about gasification in a straight-forward, non-technical manner.

NONE

2008-05-15T23:59:59.000Z

Note: This page contains sample records for the topic "injection catalytic gasification" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

Current Gasification Research  

Energy.gov (U.S. Department of Energy (DOE))

With coal gasification now in modern commercial-scale applications, the U.S. Department of Energy's (DOE) Office of Fossil Energy has turned its attention to future gasification concepts that offer...

82

Gasification | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Gasification Gasification Gasification The Wabash River Clean Coal Power Plant The Wabash River Clean Coal Power Plant Gasification Technology R&D Coal gasification offers one of the most versatile and clean ways to convert coal into electricity, hydrogen, and other valuable energy products. Coal gasification electric power plants are now operating commercially in the United States and in other nations, and many experts predict that coal gasification will be at the heart of future generations of clean coal technology plants. Rather than burning coal directly, gasification (a thermo-chemical process) breaks down coal - or virtually any carbon-based feedstock - into its basic chemical constituents. In a modern gasifier, coal is typically exposed to steam and carefully controlled amounts of air or oxygen under high

83

NETL: Gasifipedia - Gasification in Detail  

NLE Websites -- All DOE Office Websites (Extended Search)

Commercial Gasifiers Commercial Gasifiers Types of Gasifiers Although there are various types of gasifers (gasification reactors), different in design and operational characteristics, there are three main gasifier classifications into which most of the commercially available gasifiers fall. These categories are as follows: Fixed-bed gasifiers (also referred as moving-bed gasifiers) Entrained-flow gasifiers Fluidized-bed gasifiers Commercial gasifiers of GE Energy, ConocoPhillips E-Gas(tm) and Shell SCGP are examples of entrained-flow types. Fixed-or moving-bed gasifiers include that of Lurgi and British Gas Lurgi (BGL). Fluidized-bed gasifiers include the catalytic gasifier technology being commercialized by Great Point Energy, the Winkler gasifier, and the KBR transport gasifiers. For more specific information on these gasifiers, follow the links for the bulleted gasifier types above. NOTE: Although specific gasifiers named above are described in detail throughout this website, it is realized that other gasification technologies exist. The gasifiers discussed herein were not preferentially chosen by NETL.

84

Coal gasification development intensifies  

Science Journals Connector (OSTI)

Coal gasification development intensifies ... Three almost simultaneous developments in coal gasification, although widely divergent in purpose and geography, rapidly are accelerating the technology's movement into an era of commercial exploitation. ... A plant to be built in the California desert will be the first commercialsize coal gasification power plant in the U.S. In West Germany, synthesis gas from a coal gasification demonstration plant is now being used as a chemical feedstock, preliminary to scaleup of the process to commercial size. ...

1980-02-25T23:59:59.000Z

85

Gasification Systems Publications  

NLE Websites -- All DOE Office Websites (Extended Search)

Gasifipedia Gasifier Optimization Feed Systems Syngas Processing Systems Analyses Gasification Plant Databases International Activity Program Plan Project Portfolio Project...

86

Gasification Systems Publications  

NLE Websites -- All DOE Office Websites (Extended Search)

Publications News Gasifipedia Gasifier Optimization Feed Systems Syngas Processing Systems Analyses Gasification Plant Databases International Activity Program Plan Project...

87

2010 Worldwide Gasification Database  

DOE Data Explorer (OSTI)

The 2010 Worldwide Gasification Database describes the current world gasification industry and identifies near-term planned capacity additions. The database lists gasification projects and includes information (e.g., plant location, number and type of gasifiers, syngas capacity, feedstock, and products). The database reveals that the worldwide gasification capacity has continued to grow for the past several decades and is now at 70,817 megawatts thermal (MWth) of syngas output at 144 operating plants with a total of 412 gasifiers.

88

2007 gasification technologies workshop papers  

SciTech Connect

Topics covered in this workshop are fundamentals of gasification, carbon capture, reviews of financial and regulatory incentives, coal to liquids, and focus on gasification in the Western US.

NONE

2007-03-15T23:59:59.000Z

89

Downdraft gasification of biomass.  

E-Print Network (OSTI)

??The objectives of this research were to investigate the parameters affecting the gasification process within downdraft gasifiers using biomass feedstocks. In addition to investigations with… (more)

Milligan, Jimmy B.

1994-01-01T23:59:59.000Z

90

Coal Gasification Systems Solicitations  

NLE Websites -- All DOE Office Websites (Extended Search)

Low Cost Coal Conversion to High Hydrogen Syngas; FE0023577 Alstom's Limestone Chemical Looping Gasification Process for High Hydrogen Syngas Generation; FE0023497 OTM-Enhanced...

91

Co-gasification of petroleum coke and biomass  

Science Journals Connector (OSTI)

Abstract Gasification may be an attractive alternative for converting heavy oil residue – petroleum coke into valuable synthetic gas. Due to the low reactivity of petroleum coke, it is maybe preferable to convert it in combination with other fuels such as biomass. Co-gasification of petroleum coke and biomass was studied in an atmospheric bubbling fluidised bed reactor and a thermogravimetric analyser (TGA) at KTH Royal University of Technology. Biomass ash in the blends was found to have a catalytic effect on the reactivity of petroleum coke during co-gasification. Furthermore, this synergetic effect between biomass and petcoke was observed in the kinetics data. The activation energy Ea determined from the Arrhenius law for pure petcoke steam gasification in the TGA was 121.5 kJ/mol, whereas for the 50/50 mixture it was 96.3, and for the 20/80 blend – 83.5 kJ/mol.

Vera Nemanova; Araz Abedini; Truls Liliedahl; Klas Engvall

2014-01-01T23:59:59.000Z

92

Forward and reverse combustion gasification of coal with production of high-quality syngas in a simulated pilot system for in situ gasification  

Science Journals Connector (OSTI)

Abstract This research focused on the feasibility and stability of applying the forward and reverse combustion approach to the in situ gasification of lignite and bituminous coal with oxygen or oxygen–steam mixtures as gasification agents, especially reverse combustion gasification. A high-quality syngas (H2 and CO) could be obtained using the reverse combustion gasification technique combined with forward combustion gasification in a pilot system for in situ gasification. The gasification time was extended more than 25% using the reverse combustion approach. The controlling conditions for reverse combustion gasification were obtained by comparing and analyzing experimental data. The results show the relationship between the inject gas flow within certain limits and velocity of the gasification flame was linear during reverse combustion. The underground conditions of the coal seam and strata were simulated in a pilot-scale underground gasifier during experiments. The combustion gasification of coal was carried out experimentally for over 5 days. The average effective content (H2 and CO) of syngas was in the range of 60–70%, meeting the requirement of synthesis gas. The optimal ranges of gasifying lignite and bituminous coal were found to be 1.5–2.0 and 1.3–1.75, respectively. The product gas flow was proportional to oxygen blast. These are expected to provide useful guidance on practical underground coal gasification operations and to give experimental evidence in support of theory.

Yong Cui; Jie Liang; Zhangqing Wang; Xiaochun Zhang; Chenzi Fan; Dongyu Liang; Xuan Wang

2014-01-01T23:59:59.000Z

93

Coal Gasification in Australia  

Science Journals Connector (OSTI)

... P. S. Andrews gave a full account of the Federal project for the pressure gasification of non-coking coals for the combined purpose of town's gas ' and the ... of town's gas ' and the production of synthetic liquid fuel. Work on the gasification of brown coal in. Victoria was commenced in 1931 by the technical staff of ...

1955-06-11T23:59:59.000Z

94

Gasification: A Cornerstone Technology  

ScienceCinema (OSTI)

NETL is a leader in the science and technology of gasification - a process for the conversion of carbon-based materials such as coal into synthesis gas (syngas) that can be used to produce clean electrical energy, transportation fuels, and chemicals efficiently and cost-effectively using domestic fuel resources. Gasification is a cornerstone technology of 21st century zero emissions powerplants

Gary Stiegel

2010-01-08T23:59:59.000Z

95

Gasification: A Cornerstone Technology  

SciTech Connect

NETL is a leader in the science and technology of gasification - a process for the conversion of carbon-based materials such as coal into synthesis gas (syngas) that can be used to produce clean electrical energy, transportation fuels, and chemicals efficiently and cost-effectively using domestic fuel resources. Gasification is a cornerstone technology of 21st century zero emissions powerplants

Gary Stiegel

2008-03-26T23:59:59.000Z

96

Incentives boost coal gasification  

SciTech Connect

Higher energy prices are making technologies to gasify the USA's vast coal reserves attractive again. The article traces the development of coal gasification technology in the USA. IGCC and industrial gasification projects are now both eligible for a 20% investment tax credit and federal loan guarantees can cover up to 80% of construction costs. 4 photos.

Hess, G.

2006-01-16T23:59:59.000Z

97

2006 gasification technologies conference papers  

SciTech Connect

Sessions covered: business overview, industry trends and new developments; gasification projects progress reports; industrial applications and opportunities; Canadian oil sands; China/Asia gasification markets - status and projects; carbon management with gasification technologies; gasification economics and performance issues addressed; and research and development, and new technologies initiatives.

NONE

2006-07-01T23:59:59.000Z

98

A Stoichiometric Analysis of Coal Gasification  

Science Journals Connector (OSTI)

A Stoichiometric Analysis of Coal Gasification ... Gasification of New Zealand Coals: A Comparative Simulation Study ... Gasification of New Zealand Coals: A Comparative Simulation Study ...

James Wei

1979-07-01T23:59:59.000Z

99

Using Ilmenite To Reduce the Tar Yield in a Dual Fluidized Bed Gasification System  

Science Journals Connector (OSTI)

In this work, ilmenite was used as the catalytic material in the Chalmers 2–4 MWth dual fluidized bed gasifier to decrease the yield of tar. ... Indirect gasification, using the Dual Fluidized Bed (DFB) concept, has been identified as being suitable for medium- to large-scale production units. ... catalytic reactors, the implementation of specific reaction media such as supercrit. ...

Anton Larsson; Mikael Israelsson; Fredrik Lind; Martin Seemann; Henrik Thunman

2014-03-10T23:59:59.000Z

100

NETL: Gasification Systems Reference Shelf  

NLE Websites -- All DOE Office Websites (Extended Search)

Shelf Shelf Gasification Systems Reference Shelf TABLE OF CONTENTS Brochures Conferences and Workshops Gasification Systems Projects National Map Gasification Systems Projects and Performers Gasification Systems Project Portfolio Gasifipedia Multi-phase Flow with Interphase eXchange (MFIX) Patents Program Presentations Project Information Projects Summary Table by State Solicitations Systems and Industry Analyses Studies Technical Presentations & Papers Technology Readiness Assessment (Comprehensive Report | Overview Report) Video, Images & Photos Gasification Plant Databases CD Icon Request Gasification Technologies Information on a CD. Gasification RSS Feed Subscribe to the Gasification RSS Feed to follow website updates. LinkedIn DOE Gasification Program Group Subscribe to the LinkedIn DOE Gasification Program group for more information and discussion.

Note: This page contains sample records for the topic "injection catalytic gasification" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

17 - Fluidized bed gasification  

Science Journals Connector (OSTI)

Abstract: The chapter describes the state-of-the-art of fluidized bed gasification of solid fuels, starting from the key role played by hydrodynamics, and its strong correlation with physical and chemical phenomena of the process and operating performance parameters of the reactor. The possible configurations of fluidized bed gasification plants are also assessed, and an analysis of the main methods for syngas cleaning is reported. Finally, the chapter describes some of the most interesting commercial experiences. The analysis indicates that the gasification of biomass and also of municipal and industrial solid wastes appear to be the most interesting sectors for the industrial development and utilization of fluidized bed gasifiers.

U. Arena

2013-01-01T23:59:59.000Z

102

Gasification Technologie: Opportunities & Challenges  

SciTech Connect

This course has been put together to provide a single source document that not only reviews the historical development of gasification but also compares the process to combustion. It also provides a short discussion on integrated gasification and combined cycle processes. The major focus of the course is to describe the twelve major gasifiers being developed today. The hydrodynamics and kinetics of each are reviewed along with the most likely gas composition from each of the technologies when using a variety of fuels under different conditions from air blown to oxygen blown and atmospheric pressure to several atmospheres. If time permits, a more detailed discussion of low temperature gasification will be included.

Breault, R.

2012-01-01T23:59:59.000Z

103

Gasification Â… Program Overview  

NLE Websites -- All DOE Office Websites (Extended Search)

Clearwater Clean Coal Conference, Clearwater, Florida, June 5 to 9, 2011 Clearwater Clean Coal Conference, Clearwater, Florida, June 5 to 9, 2011 Gasification Technologies Advances for Future Energy Plants Jenny B. Tennant Technology Manager - Gasification 2 Gasification Program Goal "Federal support of scientific R&D is critical to our economic competitiveness" Dr. Steven Chu, Secretary of Energy November 2010 The goal of the Gasification Program is to reduce the cost of electricity, while increasing power plant availability and efficiency, and maintaining the highest environmental standards 3 Oxygen Membrane - APCI - 25% capital cost reduction - 5.0% COE reduction Warm Gas Cleaning - RTI in combination with H 2 /CO 2 Membrane - Eltron - 2.9 % pt efficiency increase - 12% COE decrease Oxygen CO 2 H 2 rich stream Water Gas Shift*

104

NETL: Gasification Systems - Solicitations  

NLE Websites -- All DOE Office Websites (Extended Search)

Shelf > Solicitations Shelf > Solicitations Gasification Systems Solicitations All NETL Solicitations / Funding Opportunity Announcements (FOA) Gasification RSS Feed NETL RSS Feeds: List of available NETL RSS feeds. Business & Solicitations RSS: Subscribe to this to be notified of all NETL solicitations or FOA postings. Gasification RSS: Subscribe to this to be notified of Gasification news, solicitations and FOA postings. Business Alert Notification System Official notification is available through the Business Alert Notification System. *These notifications are provided as a courtesy and there may be a delay between the opportunity announcement and the arrival of the alert. SOLICITATION TITLE / AWARDS ANNOUNCEMENT PROJECT PAGE(S) 12.11.13: Fossil Energy's Request for Information DE-FOA-0001054; titled "Novel Crosscutting Research and Development to Support Advanced Energy Systems." Application due date is January 15, 2014. Applications and/or instructions can be found with this Funding Opportunity Announcement on FedConnect.

105

Gasification Â… Program Overview  

NLE Websites -- All DOE Office Websites (Extended Search)

th th Annual International Colloquium on Environmentally Preferred Advanced Power Generation, Costa Mesa, CA, February 7, 2012 An Overview of U.S. DOE's Gasification Systems Program Jenny B. Tennant Technology Manager - Gasification 2 Gasification Program Goal "Federal support of scientific R&D is critical to our economic competitiveness" Dr. Steven Chu, Secretary of Energy November 2010 The goal of the Gasification Program is to reduce the cost of electricity, while increasing power plant availability and efficiency, and maintaining the highest environmental standards 3 U.S. Coal Resources Low rank: lignite and sub-bituminous coal - About 50% of the U.S. coal reserves - Nearly 50% of U.S. coal production - Lower sulfur Bituminous coal

106

Coal gasification: Belgian first  

Science Journals Connector (OSTI)

... hope for Europe's coal production came with the announcement this month that the first gasification of coal at depths of nearly 1,000 metres would take place this May in ... of energy.

Jasper Becker

1982-03-04T23:59:59.000Z

107

Integration of carbonate fuel cells with advanced coal gasification systems  

SciTech Connect

Carbonate fuel cells have attributes which make them ideally suited to operate on coal-derived fuel gas; they can convert the methane, hydrogen, and carbon monoxide present in coal derived fuel gas directly to electricity, are not subject to thermodynamic cycle limits as are heat engines, and operate at temperatures compatible with coal gasifiers. Some new opportunities for improved efficiency have been identified in integrated coal gasification/carbonate fuel cells which take advantage of low temperature catalytic coal gasification producing a methane-rich fuel gas, and the internal methane reforming capabilities of Energy Research Corporation`s carbonate fuel cells. By selecting the appropriate operating conditions and catalyst in the gasifier, methane formation is maximized to improve gasification efficiency and to take advantage of the heat management aspects of the internal reforming carbonate fuel cell. These advanced integrated gasification/carbonate fuel cell systems are projected to have better efficiencies than gasification/carbonate fuel cell systems employing conventional gasification, and also competing non-fuel cell systems. These improved efficiencies would be accompanied by a corresponding reduction in impact on the environment as well.

Steinfeld, G. [Energy Research Corp., Danbury, CT (United States); Meyers, S.J. [Fluor Daniel, Inc., Irvine, CA (United States); Hauserman, W.B. [North Dakota Univ., Grand Forks, ND (United States). Energy and Environmental Research Center

1992-12-01T23:59:59.000Z

108

Integration of carbonate fuel cells with advanced coal gasification systems  

SciTech Connect

Carbonate fuel cells have attributes which make them ideally suited to operate on coal-derived fuel gas; they can convert the methane, hydrogen, and carbon monoxide present in coal derived fuel gas directly to electricity, are not subject to thermodynamic cycle limits as are heat engines, and operate at temperatures compatible with coal gasifiers. Some new opportunities for improved efficiency have been identified in integrated coal gasification/carbonate fuel cells which take advantage of low temperature catalytic coal gasification producing a methane-rich fuel gas, and the internal methane reforming capabilities of Energy Research Corporation's carbonate fuel cells. By selecting the appropriate operating conditions and catalyst in the gasifier, methane formation is maximized to improve gasification efficiency and to take advantage of the heat management aspects of the internal reforming carbonate fuel cell. These advanced integrated gasification/carbonate fuel cell systems are projected to have better efficiencies than gasification/carbonate fuel cell systems employing conventional gasification, and also competing non-fuel cell systems. These improved efficiencies would be accompanied by a corresponding reduction in impact on the environment as well.

Steinfeld, G. (Energy Research Corp., Danbury, CT (United States)); Meyers, S.J. (Fluor Daniel, Inc., Irvine, CA (United States)); Hauserman, W.B. (North Dakota Univ., Grand Forks, ND (United States). Energy and Environmental Research Center)

1992-01-01T23:59:59.000Z

109

Status of Coal Gasification: 1977  

Science Journals Connector (OSTI)

High-pressure technology is important to coal gasification for several reasons. When the end product ... of high pressures in all types of coal gasification reduces the pressure drop throughout the equipment,...

F. C. Schora; W. G. Bair

1979-01-01T23:59:59.000Z

110

Gasification of selected woody plants  

Science Journals Connector (OSTI)

The article contains laboratory data comparing the rate of gasification of five types of woody plants—beech, ... oak, willow, poplar and rose. The gasification rate was determined thermogravimetrically. Carbon di...

Buryan Petr

2014-07-01T23:59:59.000Z

111

Coal Gasification Report.indb  

NLE Websites -- All DOE Office Websites (Extended Search)

Integrated Coal Integrated Coal Gasification Combined Cycle: Market Penetration Recommendations and Strategies Produced for the Department of Energy (DOE)/ National Energy Technology Laboratory (NETL) and the Gasification Technologies Council (GTC) September 2004 Coal-Based Integrated Gasification Combined Cycle: Market Penetration Strategies and Recommendations Final Report Study Performed by:

112

Biomass Gasification in Supercritical Water  

Science Journals Connector (OSTI)

Biomass Gasification in Supercritical Water† ... A packed bed of carbon within the reactor catalyzed the gasification of these organic vapors in the water; consequently, the water effluent of the reactor was clean. ... A method for removing plugs from the reactor was developed and employed during an 8-h gasification run involving potato wastes. ...

Michael Jerry Antal, Jr.; Stephen Glen Allen; Deborah Schulman; Xiaodong Xu; Robert J. Divilio

2000-10-14T23:59:59.000Z

113

Fundamentals of Petroleum Residue Cracking Gasification for Coproduction of Oil and Syngas  

Science Journals Connector (OSTI)

Fundamentals of Petroleum Residue Cracking Gasification for Coproduction of Oil and Syngas ... Thus, the terminology of heavy oil or heavy residue can be also used to indicate all such heavy petroleum oils. ... Notwithstanding, for the RCG process it is ideal to develop the catalyst that has moderate cracking activity for heavy residues or heavy oils but meanwhile good activity for catalyzing the deposited coke gasification so that the gasification can be at reasonably low temperatures to maintain the catalytic activity for cracking heavy fractions. ...

Yuming Zhang; Deping Yu; Wangliang Li; Yin Wang; Shiqiu Gao; Guangwen Xu

2012-10-23T23:59:59.000Z

114

Benchmarking Biomass Gasification Technologies  

NLE Websites -- All DOE Office Websites (Extended Search)

Biomass Gasification Technologies for Biomass Gasification Technologies for Fuels, Chemicals and Hydrogen Production Prepared for U.S. Department of Energy National Energy Technology Laboratory Prepared by Jared P. Ciferno John J. Marano June 2002 i ACKNOWLEDGEMENTS The authors would like to express their appreciation to all individuals who contributed to the successful completion of this project and the preparation of this report. This includes Dr. Phillip Goldberg of the U.S. DOE, Dr. Howard McIlvried of SAIC, and Ms. Pamela Spath of NREL who provided data used in the analysis and peer review. Financial support for this project was cost shared between the Gasification Program at the National Energy Technology Laboratory and the Biomass Power Program within the DOE's Office of Energy Efficiency and Renewable Energy.

115

Conceptual design report -- Gasification Product Improvement Facility (GPIF)  

SciTech Connect

The problems heretofore with coal gasification and IGCC concepts have been their high cost and historical poor performance of fixed-bed gasifiers, particularly on caking coals. The Gasification Product Improvement Facility (GPIF) project is being developed to solve these problems through the development of a novel coal gasification invention which incorporates pyrolysis (carbonization) with gasification (fixed-bed). It employs a pyrolyzer (carbonizer) to avoid sticky coal agglomeration caused in the conventional process of gradually heating coal through the 400 F to 900 F range. In so doing, the coal is rapidly heated sufficiently such that the coal tar exists in gaseous form rather than as a liquid. Gaseous tars are then thermally cracked prior to the completion of the gasification process. During the subsequent endothermic gasification reactions, volatilized alkali can become chemically bound to aluminosilicates in (or added to) the ash. To reduce NH{sub 3} and HCN from fuel born nitrogen, steam injection is minimized, and residual nitrogen compounds are partially chemically reduced in the cracking stage in the upper gasifier region. Assuming testing confirms successful deployment of all these integrated processes, future IGCC applications will be much simplified, require significantly less mechanical components, and will likely achieve the $1,000/kWe commercialized system cost goal of the GPIF project. This report describes the process and its operation, design of the plant and equipment, site requirements, and the cost and schedule. 23 refs., 45 figs., 23 tabs.

Sadowski, R.S.; Skinner, W.H.; House, L.S.; Duck, R.R. [CRS Sirrine Engineers, Inc., Greenville, SC (United States); Lisauskas, R.A.; Dixit, V.J. [Riley Stoker Corp., Worcester, MA (United States); Morgan, M.E.; Johnson, S.A. [PSI Technology Co., Andover, MA (United States). PowerServe Div.; Boni, A.A. [PSI-Environmental Instruments Corp., Andover, MA (United States)

1994-09-01T23:59:59.000Z

116

Solar coal gasification reactor with pyrolysis gas recycle  

DOE Patents (OSTI)

Coal (or other carbonaceous matter, such as biomass) is converted into a duct gas that is substantially free from hydrocarbons. The coal is fed into a solar reactor (10), and solar energy (20) is directed into the reactor onto coal char, creating a gasification front (16) and a pyrolysis front (12). A gasification zone (32) is produced well above the coal level within the reactor. A pyrolysis zone (34) is produced immediately above the coal level. Steam (18), injected into the reactor adjacent to the gasification zone (32), reacts with char to generate product gases. Solar energy supplies the energy for the endothermic steam-char reaction. The hot product gases (38) flow from the gasification zone (32) to the pyrolysis zone (34) to generate hot char. Gases (38) are withdrawn from the pyrolysis zone (34) and reinjected into the region of the reactor adjacent the gasification zone (32). This eliminates hydrocarbons in the gas by steam reformation on the hot char. The product gas (14) is withdrawn from a region of the reactor between the gasification zone (32) and the pyrolysis zone (34). The product gas will be free of tar and other hydrocarbons, and thus be suitable for use in many processes.

Aiman, William R. (Livermore, CA); Gregg, David W. (Morago, CA)

1983-01-01T23:59:59.000Z

117

GASIFICATION FOR DISTRIBUTED GENERATION  

SciTech Connect

A recent emphasis in gasification technology development has been directed toward reduced-scale gasifier systems for distributed generation at remote sites. The domestic distributed power generation market over the next decade is expected to be 5-6 gigawatts per year. The global increase is expected at 20 gigawatts over the next decade. The economics of gasification for distributed power generation are significantly improved when fuel transport is minimized. Until recently, gasification technology has been synonymous with coal conversion. Presently, however, interest centers on providing clean-burning fuel to remote sites that are not necessarily near coal supplies but have sufficient alternative carbonaceous material to feed a small gasifier. Gasifiers up to 50 MW are of current interest, with emphasis on those of 5-MW generating capacity. Internal combustion engines offer a more robust system for utilizing the fuel gas, while fuel cells and microturbines offer higher electric conversion efficiencies. The initial focus of this multiyear effort was on internal combustion engines and microturbines as more realistic near-term options for distributed generation. In this project, we studied emerging gasification technologies that can provide gas from regionally available feedstock as fuel to power generators under 30 MW in a distributed generation setting. Larger-scale gasification, primarily coal-fed, has been used commercially for more than 50 years to produce clean synthesis gas for the refining, chemical, and power industries. Commercial-scale gasification activities are under way at 113 sites in 22 countries in North and South America, Europe, Asia, Africa, and Australia, according to the Gasification Technologies Council. Gasification studies were carried out on alfalfa, black liquor (a high-sodium waste from the pulp industry), cow manure, and willow on the laboratory scale and on alfalfa, black liquor, and willow on the bench scale. Initial parametric tests evaluated through reactivity and product composition were carried out on thermogravimetric analysis (TGA) equipment. These tests were evaluated and then followed by bench-scale studies at 1123 K using an integrated bench-scale fluidized-bed gasifier (IBG) which can be operated in the semicontinuous batch mode. Products from tests were solid (ash), liquid (tar), and gas. Tar was separated on an open chromatographic column. Analysis of the gas product was carried out using on-line Fourier transform infrared spectroscopy (FT-IR). For selected tests, gas was collected periodically and analyzed using a refinery gas analyzer GC (gas chromatograph). The solid product was not extensively analyzed. This report is a part of a search into emerging gasification technologies that can provide power under 30 MW in a distributed generation setting. Larger-scale gasification has been used commercially for more than 50 years to produce clean synthesis gas for the refining, chemical, and power industries, and it is probable that scaled-down applications for use in remote areas will become viable. The appendix to this report contains a list, description, and sources of currently available gasification technologies that could be or are being commercially applied for distributed generation. This list was gathered from current sources and provides information about the supplier, the relative size range, and the status of the technology.

Ronald C. Timpe; Michael D. Mann; Darren D. Schmidt

2000-05-01T23:59:59.000Z

118

Gasification of black liquor  

DOE Patents (OSTI)

A concentrated aqueous black liquor containing carbonaceous material and alkali metal sulfur compounds is treated in a gasifier vessel containing a relatively shallow molten salt pool at its bottom to form a combustible gas and a sulfide-rich melt. The gasifier vessel, which is preferably pressurized, has a black liquor drying zone at its upper part, a black liquor solids gasification zone located below the drying zone, and a molten salt sulfur reduction zone which comprises the molten salt pool. A first portion of an oxygen-containing gas is introduced into the gas space in the gasification zone immediatley above the molten salt pool. The remainder of the oxygen-containing gas is introduced into the molten salt pool in an amount sufficient to cause gasification of carbonaceous material entering the pool from the gasification zone but not sufficient to create oxidizing conditions in the pool. The total amount of the oxygen-containing gas introduced both above the pool and into the pool constitutes between 25 and 55% of the amount required for complete combustion of the black liquor feed. A combustible gas is withdrawn from an upper portion of the drying zone, and a melt in which the sulfur content is predominantly in the form of alkali metal sulfide is withdrawn from the molten salt sulfur reduction zone.

Kohl, Arthur L. (Woodland Hills, CA)

1987-07-28T23:59:59.000Z

119

Improved System Integration for Integrated Gasification Combined Cycle (IGCC) Systems  

Science Journals Connector (OSTI)

Improved System Integration for Integrated Gasification Combined Cycle (IGCC) Systems ... The model is applied to evaluate integration schemes involving nitrogen injection, air extraction, and combinations of both, as well as different ASU pressure levels. ... The optimal nitrogen injection only case in combination with an elevated pressure ASU had the highest efficiency and power output and approximately the lowest emissions per unit output of all cases considered, and thus is a recommended design option. ...

H. Christopher Frey; Yunhua Zhu

2006-02-02T23:59:59.000Z

120

NETL: 2010 World Gasification Database Archive  

NLE Websites -- All DOE Office Websites (Extended Search)

Home > Technologies > Coal & Power Systems > Gasification Systems > 2010 World Gasification Database Home > Technologies > Coal & Power Systems > Gasification Systems > 2010 World Gasification Database Gasification Systems 2010 Worldwide Gasification Database Archive DOE/NETL 2010 Worldwide Gasification Database Worldwide Gasification Database Analysis The 2010 Worldwide Gasification Database describes the current world gasification industry and identifies near-term planned capacity additions. The database lists gasification projects and includes information (e.g., plant location, number and type of gasifiers, syngas capacity, feedstock, and products). The database reveals that the worldwide gasification capacity has continued to grow for the past several decades and is now at 70,817 megawatts thermal (MWth) of syngas output at 144 operating plants with a total of 412 gasifiers.

Note: This page contains sample records for the topic "injection catalytic gasification" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Key tests set for underground coal gasification  

SciTech Connect

Underground coal gasification (UCG) is about to undergo some tests. The tests will be conducted by Lawrence Livermore National Laboratory (LLNL) in a coal seam owned by Washington Irrigation and Development Co. A much-improved UCG system has been developed by Stephens and his associates at LLNL - the controlled retracting injection point (CRIP) method. Pritchard Corp., Kansas City, has done some conceptual process design and has further studied the feasibility of using the raw gas from a UCG burn as a feedstock for methanol synthesis and/or MTG gasoline. Each method was described. (DP)

Haggin, J.

1983-07-18T23:59:59.000Z

122

Integrated Gasification Combined Cycle Based on Pressurized Fluidized Bed Gasification  

Science Journals Connector (OSTI)

Enviropower Inc. has developed a modern power plant concept based on an integrated pressurized fluidized bed gasification and gas turbine combined cycle (IGCC)....

Kari Salo; J. G. Patel

1997-01-01T23:59:59.000Z

123

NETL: Gasifipedia - Gasification in Detail  

NLE Websites -- All DOE Office Websites (Extended Search)

Fundamentals Fundamentals Gasification is a partial oxidation process. The term partial oxidation is a relative term which simply means that less oxygen is used in gasification than would be required for combustion (i.e., burning or complete oxidation) of the same amount of fuel. Gasification typically uses only 25 to 40 percent of the theoretical oxidant (either pure oxygen or air) to generate enough heat to gasify the remaining unoxidized fuel, producing syngas. The major combustible products of gasification are carbon monoxide (CO) and hydrogen (H2), with only a minor amount of the carbon completely oxidized to carbon dioxide (CO2) and water. The heat released by partial oxidation provides most of the energy needed to break up the chemical bonds in the feedstock, to drive the other endothermic gasification reactions, and to increase the temperature of the final gasification products.

124

Pioneering Gasification Plants | Department of Energy  

Energy Savers (EERE)

lighting street lights fueled by "town gas," frequently the product of early forms of coal gasification. Gasification of fuel also provided fuel for steel mills, and toward the...

125

NETL: Gasification Project Information  

NLE Websites -- All DOE Office Websites (Extended Search)

Project Information Project Information Gasification Systems Reference Shelf - Project Information Active Projects | Archived Projects | All NETL Fact Sheets Feed Systems A Cost-Effective Oxygen Separation System Based on Open Gradient Magnetic Field by Polymer Beads [SC0010151] Development of ITM Oxygen Technology for Low-cost and Low-emission Gasification and Other Industrial Applications [FE0012065] Dry Solids Pump Coal Feed Technology [FE0012062] Coal-CO2 Slurry Feeding System for Pressurized Gasifiers [FE0012500] National Carbon Capture Center at the Power Systems Development Facility [FE0000749] Modification of the Developmental Pressure Decoupled Advanced Coal (PDAC) Feeder [NT0000749] Recovery Act: Development of Ion-Transport Membrane Oxygen Technology for Integration in IGCC and Other Advanced Power Generation Systems [DE-FC26-98FT40343]

126

In situ formation of coal gasification catalysts from low cost alkali metal salts  

DOE Patents (OSTI)

A carbonaceous material, such as crushed coal, is admixed or impregnated with an inexpensive alkali metal compound, such as sodium chloride, and then pretreated with a stream containing steam at a temperature of 350.degree. to 650.degree. C. to enhance the catalytic activity of the mixture in a subsequent gasification of the mixture. The treatment may result in the transformation of the alkali metal compound into another, more catalytically active, form.

Wood, Bernard J. (Santa Clara, CA); Brittain, Robert D. (Cupertino, CA); Sancier, Kenneth M. (Menlo Park, CA)

1985-01-01T23:59:59.000Z

127

The Complete Gasification of Coal  

Science Journals Connector (OSTI)

... plant designed by C. B. Tully, and operated at Bedford, for the complete gasification of coal. Altogether, since 1919, about two hundred such plants have been erected ...

J. S. G. THOMAS

1923-06-09T23:59:59.000Z

128

Biomass Gasification Combined Cycle  

SciTech Connect

Gasification combined cycle continues to represent an important defining technology area for the forest products industry. The ''Forest Products Gasification Initiative'', organized under the Industry's Agenda 2020 technology vision and supported by the DOE ''Industries of the Future'' program, is well positioned to guide these technologies to commercial success within a five-to ten-year timeframe given supportive federal budgets and public policy. Commercial success will result in significant environmental and renewable energy goals that are shared by the Industry and the Nation. The Battelle/FERCO LIVG technology, which is the technology of choice for the application reported here, remains of high interest due to characteristics that make it well suited for integration with the infrastructure of a pulp production facility. The capital cost, operating economics and long-term demonstration of this technology area key input to future economically sustainable projects and must be verified by the 200 BDT/day demonstration facility currently operating in Burlington, Vermont. The New Bern application that was the initial objective of this project is not currently economically viable and will not be implemented at this time due to several changes at and around the mill which have occurred since the inception of the project in 1995. The analysis shows that for this technology, and likely other gasification technologies as well, the first few installations will require unique circumstances, or supportive public policies, or both to attract host sites and investors.

Judith A. Kieffer

2000-07-01T23:59:59.000Z

129

NETL: Gasification - Request Gasification Systems Information on a CD  

NLE Websites -- All DOE Office Websites (Extended Search)

Gasification Systems Gasification Systems Request Gasification Systems Information on a CD Please fill in the form below to receive the CDs of your choice. * Denotes required field Requestor Contact Information Requested By (Agency/Company): First Name: * Last Name: * Address: * PO Box: City: * State: * Zip: * Country: Email: * Phone: CD Request Select CD(s):* Gasification Systems Project Portfolio Gasification Technologies Training Course Special Instructions: Submit Request Reset Contacts Program Contact: Jenny Tennant (304) 285-4830 jenny.tennant@netl.doe.gov Close Contacts Disclaimer Disclaimer of Liability: This system is made available by an agency of the United States Government. Neither the United States Government, the Department of Energy, the National Energy Technology Laboratory, nor any of

130

NETL: Gasification Systems - Gasifier Optimization  

NLE Websites -- All DOE Office Websites (Extended Search)

Gasification Systems Program Gasification Systems Program Gasification is used to convert a solid feedstock, such as coal, petcoke, or biomass, into a gaseous form, referred to as synthesis gas or syngas, which is primarily hydrogen and carbon monoxide. Pollutants can be captured and disposed of or converted to useful products more easily with gasification-based technologies compared to conventional combustion of solid feedstocks. Gasification can generate clean power, and by adding steam to the syngas and performing water-gas-shift to convert the carbon monoxide to carbon dioxide (CO2), additional hydrogen can be produced. The hydrogen and CO2 are separated-the hydrogen is used to make power and the CO2 is sent to storage, converted to useful products or used for enhanced oil recovery (see Gasification Systems Program Research and Development Areas figure). In addition to efficiently producing electric power, a wide range of transportation fuels and chemicals can be produced from the cleaned syngas, thereby providing the flexibility needed to capitalize on the changing economic market. As a result, gasification provides a flexible technology option for using domestically available resources while meeting future environmental emission standards. Furthermore, polygeneration plants that produce multiple products are uniquely possible with gasification technologies.

131

Gasification of Coal and Oil  

Science Journals Connector (OSTI)

... , said the Gas Council is spending £120,000 this year on research into coal gasification, and the National Coal Board and the Central Electricity Generating Board £680,000 and ... coal utilization. The Gas Council is spending about £230,000 on research into the gasification of oil under a programme intended to contribute also to the improvement of the economics ...

1960-02-13T23:59:59.000Z

132

Underground Gasification of Coal Reported  

Science Journals Connector (OSTI)

Underground Gasification of Coal Reported ... RESULTS of a first step taken toward determining the feasibility of the underground gasification of coal were reported recently to the Interstate Oil Compact Commission by Milton H. Fies, manager of coal operations for the Alabama Power Co. ...

1947-05-12T23:59:59.000Z

133

Modelling coal gasification  

Science Journals Connector (OSTI)

Coal gasification processes in a slurry-feed-type entrained-flow gasifier are studied. Novel simulation methods as well as numerical results are presented. We use the vorticity-stream function method to study the characteristics of gas flow and a scalar potential function is introduced to model the mass source terms. The random trajectory model is employed to describe the behaviour of slurry-coal droplets. Very detailed results regarding the impact of the O2/coal ratio on the distribution of velocity, temperature and concentration are obtained. Simulation results show that the methods are feasible and can be used to study a two-phase reacting flow efficiently.

Xiang Jun Liu; Wu Rong Zhang; Tae Jun Park

2001-01-01T23:59:59.000Z

134

PNNL Coal Gasification Research  

SciTech Connect

This report explains the goals of PNNL in relation to coal gasification research. The long-term intent of this effort is to produce a syngas product for use by internal Pacific Northwest National Laboratory (PNNL) researchers in materials, catalysts, and instrumentation development. Future work on the project will focus on improving the reliability and performance of the gasifier, with a goal of continuous operation for 4 hours using coal feedstock. In addition, system modifications to increase operational flexibility and reliability or accommodate other fuel sources that can be used for syngas production could be useful.

Reid, Douglas J.; Cabe, James E.; Bearden, Mark D.

2010-07-28T23:59:59.000Z

135

Pyrolytic Gasification | Open Energy Information  

Open Energy Info (EERE)

Pyrolytic Gasification Pyrolytic Gasification Jump to: navigation, search Name Pyrolytic Gasification Sector Biomass References Balboa Pacific Corp[1] Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"TERRAIN","zoom":6,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"500px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[]}

136

NETL: Gasification Systems Program Contacts  

NLE Websites -- All DOE Office Websites (Extended Search)

Gasification Systems Program Contacts Gasification Systems Program Contacts Jenny Tennant Gasification Technology Manager U.S. Department of Energy National Energy Technology Laboratory 3610 Collins Ferry Road P.O. Box 880 Morgantown, WV 26507-0880 Phone: (304) 285-4830 Email: Jenny.Tennant@netl.doe.gov Pete Rozelle Division of Advanced Energy System - Program Manager, Office of Fossil Energy U.S. Department of Energy FE-221/Germantown Building 1000 Independence Avenue, S.W. Washington, DC 20585-1209 Phone: (301) 903-2338 Email: Peter.Rozelle@hq.doe.gov Heather Quedenfeld Gasification Division Director U.S. Department of Energy National Energy Technology Laboratory 626 Cochrans Mill Road P.O. Box 10940 Pittsburgh, PA 15236-0940 Phone: (412) 386-5781 Email: Heather.Quedenfeld@netl.doe.gov Kristin Gerdes Performance Division

137

AVESTAR® - Training - Gasification Process Operations  

NLE Websites -- All DOE Office Websites (Extended Search)

Gasification Process Operations Gasification Process Operations This course is designed as a familiarization course to increase understanding of the gasification with CO2 capture process. During the training, participants will startup and shutdown the simulated unit in an integrated manner and will be exposed to simple and complex unit malfunctions in the control room and in the field. Course objectives are as follows: Introduce trainees to gasification and CO2 capture process systems and major components and how they dynamically interact Familiarize trainees with the Human Machine Interface (HMI) and plant control and how safe and efficient operation of the unit can be affected by plant problems Provide the trainees with hands-on operating experiences in plant operations using the HMI

138

Gasification Systems 2013 Project Selections  

Energy.gov (U.S. Department of Energy (DOE))

The Department of Energy in 2013 selected ten projects that will focus on reducing the cost of gasification with carbon capture for producing electric power, fuels, and chemicals. The projects will...

139

Coal gasification vessel  

DOE Patents (OSTI)

A vessel system (10) comprises an outer shell (14) of carbon fibers held in a binder, a coolant circulation mechanism (16) and control mechanism (42) and an inner shell (46) comprised of a refractory material and is of light weight and capable of withstanding the extreme temperature and pressure environment of, for example, a coal gasification process. The control mechanism (42) can be computer controlled and can be used to monitor and modulate the coolant which is provided through the circulation mechanism (16) for cooling and protecting the carbon fiber and outer shell (14). The control mechanism (42) is also used to locate any isolated hot spots which may occur through the local disintegration of the inner refractory shell (46).

Loo, Billy W. (Oakland, CA)

1982-01-01T23:59:59.000Z

140

Co-Gasification of Wood and Lignite in a Dual Fluidized Bed Gasifier  

Science Journals Connector (OSTI)

Mixts. of coal and biomass were co-gasified in a jetting, ash-agglomerating, fluidized-bed, pilot scale-sized gasifier to provide steady-state operating data for numerical simulation verification. ... Downstream cleaning of gas by catalytic cracking and/or scrubbing is complex and/or expensive for small to medium gasification plants, so conversion of tar within the gasifier is preferred. ... Kern, S.; Pfeifer, C.; Hofbauer, H. Gasification of lignite in a dual fluidized bed gasifier - Influence of bed material particle size and the amount of steam. ...

Stefan Kern; Christoph Pfeifer; Hermann Hofbauer

2013-01-15T23:59:59.000Z

Note: This page contains sample records for the topic "injection catalytic gasification" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Textile Drying Via Wood Gasification  

E-Print Network (OSTI)

TEXTILE DRYING VIA WOOD GASIFICATION Thomas F. ;McGowan, Anthony D. Jape Georgia Institute of Technology Atlanta, Georgia ABSTRACT This project was carried out to investigate the possibility of using wood gas as a direct replacement... for dryers. In addition to the experimental program described above, the DOE grant covered two other major areas. A survey of the textile industry was made to assess the market for gasification equip ment. The major findings were that a large amount...

McGowan, T. F.; Jape, A. D.

1983-01-01T23:59:59.000Z

142

Materials of Gasification  

SciTech Connect

The objective of this project was to accumulate and establish a database of construction materials, coatings, refractory liners, and transitional materials that are appropriate for the hardware and scale-up facilities for atmospheric biomass and coal gasification processes. Cost, fabricability, survivability, contamination, modes of corrosion, failure modes, operational temperatures, strength, and compatibility are all areas of materials science for which relevant data would be appropriate. The goal will be an established expertise of materials for the fossil energy area within WRI. This would be an effort to narrow down the overwhelming array of materials information sources to the relevant set which provides current and accurate data for materials selection for fossil fuels processing plant. A significant amount of reference material on materials has been located, examined and compiled. The report that describes these resources is well under way. The reference material is in many forms including texts, periodicals, websites, software and expert systems. The most important part of the labor is to refine the vast array of available resources to information appropriate in content, size and reliability for the tasks conducted by WRI and its clients within the energy field. A significant has been made to collate and capture the best and most up to date references. The resources of the University of Wyoming have been used extensively as a local and assessable location of information. As such, the distribution of materials within the UW library has been added as a portion of the growing document. Literature from recent journals has been combed for all pertinent references to high temperature energy based applications. Several software packages have been examined for relevance and usefulness towards applications in coal gasification and coal fired plant. Collation of the many located resources has been ongoing. Some web-based resources have been examined.

None

2005-09-15T23:59:59.000Z

143

NETL: Gasifipedia - What is Gasification?  

NLE Websites -- All DOE Office Websites (Extended Search)

Gasification Background Gasification Background Drivers for Gasification Technology The need for low-cost power produced in an environmentally sound way is certain, even if the future of regulations limiting the emission and/or encouraging the capture of CO2, and the price and availability of natural gas and oil are not. Gasification is not only capable of efficiently producing electric power, but a wide range of liquids and/or high-value chemicals (including diesel and gasoline for transportation) can be produced from cleaned syngas, providing the flexibility to capitalize on a range of dynamic changes to either domestic energy markets or global economic conditions. Polygeneration-plants that produce multiple products-is uniquely possible with gasification technologies. Continued advances in gasification-based technology will enable the conversion of our nation's abundant coal reserves into energy resources (power and liquid fuels), chemicals, and fertilizers needed to displace the use of imported oil and, thereby, help mitigate its high price and security supply concerns and to support U.S. economic competitiveness with unprecedented environmental performance.

144

GASIFICATION PLANT COST AND PERFORMANCE OPTIMIZATION  

SciTech Connect

The goal of this series of design and estimating efforts was to start from the as-built design and actual operating data from the DOE sponsored Wabash River Coal Gasification Repowering Project and to develop optimized designs for several coal and petroleum coke IGCC power and coproduction projects. First, the team developed a design for a grass-roots plant equivalent to the Wabash River Coal Gasification Repowering Project to provide a starting point and a detailed mid-year 2000 cost estimate based on the actual as-built plant design and subsequent modifications (Subtask 1.1). This unoptimized plant has a thermal efficiency of 38.3% (HHV) and a mid-year 2000 EPC cost of 1,681 $/kW. This design was enlarged and modified to become a Petroleum Coke IGCC Coproduction Plant (Subtask 1.2) that produces hydrogen, industrial grade steam, and fuel gas for an adjacent Gulf Coast petroleum refinery in addition to export power. A structured Value Improving Practices (VIP) approach was applied to reduce costs and improve performance. The base case (Subtask 1.3) Optimized Petroleum Coke IGCC Coproduction Plant increased the power output by 16% and reduced the plant cost by 23%. The study looked at several options for gasifier sparing to enhance availability. Subtask 1.9 produced a detailed report on this availability analyses study. The Subtask 1.3 Next Plant, which retains the preferred spare gasification train approach, only reduced the cost by about 21%, but it has the highest availability (94.6%) and produces power at 30 $/MW-hr (at a 12% ROI). Thus, such a coke-fueled IGCC coproduction plant could fill a near term niche market. In all cases, the emissions performance of these plants is superior to the Wabash River project. Subtasks 1.5A and B developed designs for single-train coal and coke-fueled power plants. This side-by-side comparison of these plants, which contain the Subtask 1.3 VIP enhancements, showed their similarity both in design and cost (1,318 $/kW for the coal plant and 1,260 $/kW for the coke plant). Therefore, in the near term, a coke IGCC power plant could penetrate the market and provide a foundation for future coal-fueled facilities. Subtask 1.6 generated a design, cost estimate and economics for a multiple train coal-fueled IGCC powerplant, also based on the Subtaks 1.3 cases. The Subtask 1.6 four gasification train plant has a thermal efficiency of 40.6% (HHV) and cost 1,066 $/kW. The single-train advanced Subtask 1.4 plant, which uses an advanced ''G/H-class'' combustion turbine, can have a thermal efficiency of 45.4% (HHV) and a plant cost of 1,096 $/kW. Multi-train plants will further reduce the cost. Again, all these plants have superior emissions performance. Subtask 1.7 developed an optimized design for a coal to hydrogen plant. At current natural gas prices, this facility is not competitive with hydrogen produced from natural gas. The preferred scenario is to coproduce hydrogen in a plant similar to Subtask 1.3, as described above. Subtask 1.8 evaluated the potential merits of warm gas cleanup technology. This study showed that selective catalytic oxidation of hydrogen sulfide (SCOHS) is promising. As gasification technology matures, SCOHS and other improvements identified in this study will lead to further cost reductions and efficiency improvements.

Samuel S. Tam

2002-05-01T23:59:59.000Z

145

Hydrogen Production by Catalytic Gasification of Coal in Supercritical Water  

Science Journals Connector (OSTI)

(2) However, the extensive utilization of coal leads to many problems, such as air pollution and resource waste, because of the inefficient and unclean utilization method. ... Argon would sink to the bottom of the reactor, and air would come up because of the difference in density between these two gases. ...

Rihua Lan; Hui Jin; Liejin Guo; Zhiwei Ge; Simao Guo; Ximin Zhang

2014-10-16T23:59:59.000Z

146

Hydrogen Production Cost Estimate Using Biomass Gasification  

E-Print Network (OSTI)

Hydrogen Production Cost Estimate Using Biomass Gasification National Renewable Energy Laboratory% postconsumer waste #12;i Independent Review Panel Summary Report September 28, 2011 From: Independent Review Panel, Hydrogen Production Cost Estimate Using Biomass Gasification To: Mr. Mark Ruth, NREL, DOE

147

Underground Coal Gasification in the USSR  

Science Journals Connector (OSTI)

By accomplishing in a single operation the extraction of coal and its conversion into a gaseous fuel, underground gasification makes it possible to avoid the heavy capital investments required for coal gasification

1983-01-01T23:59:59.000Z

148

June 2007 gasification technologies workshop papers  

SciTech Connect

Topics covered in this workshop are fundamentals of gasification, carbon capture and sequestration, reviews of financial and regulatory incentives, co-production, and focus on gasification in the Western US.

NONE

2007-06-15T23:59:59.000Z

149

Transport and Other Effects in Coal Gasification  

Science Journals Connector (OSTI)

The paper summarizes the kinetics of coal char gasification excepted surface reactions (mechanisms). The following subjects controlling coal char gasification are treated: Coal as the raw material ... of particle...

K. J. Hüttinger

1988-01-01T23:59:59.000Z

150

Integrated Coal Gasification Power Plant Credit (Kansas)  

Energy.gov (U.S. Department of Energy (DOE))

Integrated Coal Gasification Power Plant Credit states that an income taxpayer that makes a qualified investment in a new integrated coal gasification power plant or in the expansion of an existing...

151

Beluga Coal Gasification - ISER  

SciTech Connect

ISER was requested to conduct an economic analysis of a possible 'Cook Inlet Syngas Pipeline'. The economic analysis was incorporated as section 7.4 of the larger report titled: 'Beluga Coal Gasification Feasibility Study, DOE/NETL-2006/1248, Phase 2 Final Report, October 2006, for Subtask 41817.333.01.01'. The pipeline would carry CO{sub 2} and N{sub 2}-H{sub 2} from a synthetic gas plant on the western side of Cook Inlet to Agrium's facility. The economic analysis determined that the net present value of the total capital and operating lifecycle costs for the pipeline ranges from $318 to $588 million. The greatest contributor to this spread is the cost of electricity, which ranges from $0.05 to $0.10/kWh in this analysis. The financial analysis shows that the delivery cost of gas may range from $0.33 to $0.55/Mcf in the first year depending primarily on the price for electricity.

Steve Colt

2008-12-31T23:59:59.000Z

152

Gasification of Glucose in Supercritical Water  

Science Journals Connector (OSTI)

Gasification of Glucose in Supercritical Water ... Gasification of 0.6 M glucose in supercritical water was investigated at a temperature range from 480 to 750 °C and 28 MPa with a reactor residence time of 10?50 s. ... Carbon gasification efficiency reached 100% at 700 °C. ...

In-Gu Lee; Mi-Sun Kim; Son-Ki Ihm

2002-01-31T23:59:59.000Z

153

NETL: Gasification Systems - Gas Separation  

NLE Websites -- All DOE Office Websites (Extended Search)

Separation Separation Ion-Transport Membrane Oxygen Separation Modules Ion-Transport Membrane Oxygen Separation Modules Gas separation unit operations represent major cost elements in gasification plants. The gas separation technology being supported in the DOE program promises significant reduction in cost of electricity, improved thermal efficiency, and superior environmental performance. Gasification-based energy conversion systems rely on two gas separation processes: (1) separation of oxygen from air for feed to oxygen-blown gasifiers; and (2) post-gasification separation of hydrogen from carbon dioxide following (or along with) the shifting of gas composition when carbon dioxide capture is required or hydrogen is the desired product. Research efforts include development of advanced gas separation

154

Recovery of carbon fibres by the thermolysis and gasification of waste prepreg  

Science Journals Connector (OSTI)

Abstract This paper examines the recovery of carbon fibres from a composite used in the aeronautical industry, via a combined process of thermolysis and gasification in an air atmosphere. The waste was thermolysed at 500 °C, 600 °C or 700 °C in a pilot plant to determine the optimum thermolysis temperature. The solid residues produced – char covered carbon fibres – were characterized by SEM and XPS. The optimum time for the gasification of the char covering the fibres was determined in a combined thermolysis/gasification assay. After thermolysis at the optimum temperature (500 °C), 12 l/h of pure air were injected into the reactor and char gasification performed at 500 °C for 30–180 min. The optimum gasification time was 30 min. Longer gasification times led to the production of fibres of smaller diameter with oxidized surfaces and reduced tensile strength. The optimally recovered fibres showed about 70% of the tensile strength of virgin fibres and some 90–96% of their elasticity.

Félix A. López; Olga Rodríguez; Francisco José Alguacil; Irene García-Díaz; Teresa A. Centeno; José Luis García-Fierro; Carlos González

2013-01-01T23:59:59.000Z

155

Current Gasification Research | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Gasification » Current Gasification » Current Gasification Research Current Gasification Research Sponsored by the U.S. Department of Energy, the National Carbon Capture Center provides first-class facilities to test carbon capture technologies. Sponsored by the U.S. Department of Energy, the National Carbon Capture Center provides first-class facilities to test carbon capture technologies. With coal gasification now in modern commercial-scale applications, the U.S. Department of Energy's (DOE) Office of Fossil Energy has turned its attention to future gasification concepts that offer significant improvements in efficiency, fuel flexibility, economics and environmental sustainability. Fuel flexibility is especially important. Tomorrow's gasification plants conceivably could process a wide variety of low-cost feedstocks, handling

156

Coal gasification 2006: roadmap to commercialization  

SciTech Connect

Surging oil and gas prices, combined with supply security and environmental concerns, are prompting power generators and industrial firms to further develop coal gasification technologies. Coal gasification, the process of breaking down coal into its constituent chemical components prior to combustion, will permit the US to more effectively utilize its enormous, low cost coal reserves. The process facilitates lower environmental impact power generation and is becoming an increasingly attractive alternative to traditional generation techniques. The study is designed to inform the reader as to this rapidly evolving technology, its market penetration prospects and likely development. Contents include: Clear explanations of different coal gasification technologies; Emissions and efficiency comparisons with other fuels and technologies; Examples of US and global gasification projects - successes and failures; Commercial development and forecast data; Gasification projects by syngas output; Recommendations for greater market penetration and commercialization; Current and projected gasification technology market shares; and Recent developments including proposals for underground gasification process. 1 app.

NONE

2006-05-15T23:59:59.000Z

157

Coal Gasification for Power Generation, 3. edition  

SciTech Connect

The report provides a concise look at the challenges faced by coal-fired generation, the ability of coal gasification to address these challenges, and the current state of IGCC power generation. Topics covered include: an overview of Coal Generation including its history, the current market environment, and the status of coal gasification; a description of gasification technology including processes and systems; an analysis of the key business factors that are driving increased interest in coal gasification; an analysis of the barriers that are hindering the implementation of coal gasification projects; a discussion of Integrated Gasification Combined Cycle (IGCC) technology; an evaluation of IGCC versus other generation technologies; a discussion of IGCC project development options; a discussion of the key government initiatives supporting IGCC development; profiles of the key gasification technology companies participating in the IGCC market; and, a detailed description of existing and planned coal IGCC projects.

NONE

2007-11-15T23:59:59.000Z

158

Hydrothermal Gasification of Waste Biomass: Process Design and Life Cycle Asessment  

Science Journals Connector (OSTI)

Several scenarios are constructed for different Swiss biomass feedstocks and different scales depending on logistical choices: large-scale (155 MWSNG) and small-scale (5.2 MWSNG) scenarios for a manure feedstock and one scenario (35.6 MWSNG) for a wood feedstock. ... In conclusion, the simulation of the catalytic hydrothermal gasification of different biomass feedstocks allowed the design of industrial-scale process configurations. ...

Jeremy S. Luterbacher; Morgan Fröling; Frédéric Vogel; François Maréchal; Jefferson W. Tester

2009-01-29T23:59:59.000Z

159

Steam Gasification of Cellulose with Cobalt Catalysts in a Fluidized Bed Reactor  

Science Journals Connector (OSTI)

The catalytic performance of Co/MgO catalysts for the treatment of tar derived from cellulose steam gasification in a bubbling fluidized bed gasifier of 22 mm i.d. and 500 mm height was investigated by means of two different methods:? hot gas cleaning in a fixed bed reactor after the fluidized bed gasifier (secondary method) and treatment inside the gasifier with catalyst as a fluidizing medium (primary method). ... From this perspective, developing a more effective catalyst is essential for scaling down the plant size while still facilitating high and stable catalytic performance. ... At 720-760°, space-times 0.10-0.20 s, catalyst sizes <1.0 ...

Kazuhiko Tasaka; Takeshi Furusawa; Atsushi Tsutsumi

2007-01-19T23:59:59.000Z

160

Gasdynamic lasers utilizing carbon gasification  

Science Journals Connector (OSTI)

A theoretical investigation was made of the influence of the processes of carbon gasification by combustion products and oxidants on the chemical composition of the active medium and the energy characteristics of a gasdynamic CO2 laser. Conditions were found under which the stored energy of the active medium was greater than 100 J/g.

A S Biryukov; V M Marchenko; A M Prokhorov

1985-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "injection catalytic gasification" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

Clean Fuels from Coal Gasification  

Science Journals Connector (OSTI)

...been operated as a "pure" gasifier but to supply power gas for...was the air-blown Winkler gasifier pro-ducing power gas at Leuna...fines, additional gasification medium (air or oxygen-steam) is...partial pressure of steam in a gasifier blown with oxygen and steam...

Arthur M. Squires

1974-04-19T23:59:59.000Z

162

Clean Fuels from Coal Gasification  

Science Journals Connector (OSTI)

...appreciably larger sizes than coal to other...they grew to a size to fall upon an...air-blown Winkler gasifier pro-ducing power...additional gasification medium (air or oxygen-steam...provide "pure" gasifier Test revamp Develop larger sizes Develop pressure...

Arthur M. Squires

1974-04-19T23:59:59.000Z

163

Method for using fast fluidized bed dry bottom coal gasification  

DOE Patents (OSTI)

Carbonaceous solid material such as coal is gasified in a fast fluidized bed gasification system utilizing dual fluidized beds of hot char. The coal in particulate form is introduced along with oxygen-containing gas and steam into the fast fluidized bed gasification zone of a gasifier assembly wherein the upward superficial gas velocity exceeds about 5.0 ft/sec and temperature is 1500.degree.-1850.degree. F. The resulting effluent gas and substantial char are passed through a primary cyclone separator, from which char solids are returned to the fluidized bed. Gas from the primary cyclone separator is passed to a secondary cyclone separator, from which remaining fine char solids are returned through an injection nozzle together with additional steam and oxygen-containing gas to an oxidation zone located at the bottom of the gasifier, wherein the upward gas velocity ranges from about 3-15 ft/sec and is maintained at 1600.degree.-200.degree. F. temperature. This gasification arrangement provides for increased utilization of the secondary char material to produce higher overall carbon conversion and product yields in the process.

Snell, George J. (Fords, NJ); Kydd, Paul H. (Lawrenceville, NJ)

1983-01-01T23:59:59.000Z

164

CATALYTIC BIOMASS LIQUEFACTION  

E-Print Network (OSTI)

LBL-11 019 UC-61 CATALYTIC BIOMASS LIQUEFACTION Sabri Ergun,Catalytic Liquefaction of Biomass,n M, Seth, R. Djafar, G.of California. CATALYTIC BIOMASS LIQUEFACTION QUARTERLY

Ergun, Sabri

2013-01-01T23:59:59.000Z

165

Simulation of Syngas Production from Municipal Solid Waste Gasification in a Bubbling Fluidized Bed Using Aspen Plus  

Science Journals Connector (OSTI)

Simulation of Syngas Production from Municipal Solid Waste Gasification in a Bubbling Fluidized Bed Using Aspen Plus ... When the reaction kinetics is not known, a rigorous reactor and multiphase equilibrium based on the minimization of the total Gibbs free energy of the product mixture (an RGibbs block) is preferred to predict the equilibrium composition of the produced syngas. ... Catalytic steam gasification of municipal solid waste (MSW) to produce hydrogen-rich gas or syngas (H2 + CO) with calcined dolomite as a catalyst in a bench-scale downstream fixed bed reactor was investigated. ...

Miaomiao Niu; Yaji Huang; Baosheng Jin; Xinye Wang

2013-09-06T23:59:59.000Z

166

Economic Analysis of a 3MW Biomass Gasification Power Plant  

E-Print Network (OSTI)

Collaborative, Biomass gasification / power generationANALYSIS OF A 3MW BIOMASS GASIFICATION POWER PLANT R obert Cas a feedstock for gasification for a 3 MW power plant was

Cattolica, Robert; Lin, Kathy

2009-01-01T23:59:59.000Z

167

October 2005 Gasification-Based Fuels and Electricity Production from  

E-Print Network (OSTI)

October 2005 Gasification-Based Fuels and Electricity Production from Biomass, without......................................................................... 9 3.1.1 Biomass Gasification, and production cost estimates for gasification-based thermochemical conversion of switchgrass into Fischer

168

Pioneering Gasification Plants | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Gasification » Pioneering Gasification » Pioneering Gasification Plants Pioneering Gasification Plants In the 1800s, lamplighters made their rounds in the streets of many of America's largest cities lighting street lights fueled by "town gas," frequently the product of early forms of coal gasification. Gasification of fuel also provided fuel for steel mills, and toward the end of the 19th Century, electric power. These early gasifiers were called "gas producers," and the gas that they generated was called "producer gas." During the early 20th Century, improvements in the availability of petroleum and natural gas products, along with the extension of the infrastructure associated with these products, led to their widespread use, which replaced coal-based producer gas in the energy market.

169

NETL: Coal/Biomass Feed and Gasification  

NLE Websites -- All DOE Office Websites (Extended Search)

Coal/Biomass Feed & Gasification Coal/Biomass Feed & Gasification Coal and Coal/Biomass to Liquids Coal/Biomass Feed and Gasification The Coal/Biomass Feed and Gasification Key Technology is advancing scientific knowledge of the production of liquid hydrocarbon fuels from coal and/or coal-biomass mixtures. Activities support research for handling and processing of coal/biomass mixtures, ensuring those mixtures are compatible with feed delivery systems, identifying potential impacts on downstream components, catalyst and reactor optimization, and characterizing the range of products and product quality. Active projects within the program portfolio include the following: Coal-biomass fuel preparation Development of Biomass-Infused Coal Briquettes for Co-Gasification Coal-biomass gasification modeling

170

NETL: Gasification Systems Video, Images & Photos  

NLE Websites -- All DOE Office Websites (Extended Search)

Video, Images, Photos Video, Images, Photos Gasification Systems Reference Shelf - Video, Images & Photos The following was established to show a variety of Gasification Technologies: Gasfication powerplant photo Gasification: A Cornerstone Technology (Mar 2008) Movie Icon Windows Media Video (WMV-26MB) [ view | download ] NETL is a leader in the science and technology of gasification - a process for the conversion of carbon-based materials such as coal into synthesis gas (syngas) that can be used to produce clean electrical energy, transportation fuels, and chemicals efficiently and cost-effectively using domestic fuel resources. Gasification is a cornerstone technology of 21st century zero emissions powerplants. Proposed APS Advanced Hydrogasification Process Proposed APS Advanced Hydrogasification Process* TRDU and Hot-Gas Vessel in the EERC Gasification Tower Transport reactor development unit

171

Advanced Gasification By-Product Utilization  

SciTech Connect

With the passing of legislation designed to permanently cap and reduce mercury emissions from coal-fired utilities, it is more important than ever to develop and improve upon methods of controlling mercury emissions. One promising technique is carbon sorbent injection into the flue gas of the coal-fired power plant. Currently, this technology is very expensive as costly commercially activated carbons are used as sorbents. There is also a significant lack of understanding of the interaction between mercury vapor and the carbon sorbent, which adds to the difficulty of predicting the amount of sorbent needed for specific plant configurations. Due to its inherent porosity and adsorption properties as well as on-site availability, carbons derived from gasifiers are potential mercury sorbent candidates. Furthermore, because of the increasing restricted use of landfilling, the coal industry is very interested in finding uses for these materials as an alternative to the current disposal practice. The results of laboratory investigations and supporting technical assessments conducted under DOE Subcontract No. DE-FG26-03NT41795 are reported. This contract was with the University of Kentucky Research Foundation, which supports work with the University of Kentucky Center for Applied Energy Research and The Pennsylvania State University Energy Institute. The worked described was part of a project entitled ''Advanced Gasification By-Product Utilization''. This work involved the development of technologies for the separation and characterization of coal gasification slags from operating gasification units, activation of these materials to increase mercury and nitrogen oxide capture efficiency, assessment of these materials as sorbents for mercury and nitrogen oxides, assessment of the potential for leaching of Hg captured by the carbons, analysis of the slags for cement applications, and characterization of these materials for use as polymer fillers. The objectives of this collaborative effort between the University of Kentucky Center for Applied Energy Research (CAER), The Pennsylvania State University Energy Institute, and industry collaborators supplying gasifier char samples were to investigate the potential use of gasifier slag carbons as a source of low cost sorbent for Hg and NOX capture from combustion flue gas, concrete applications, polymer fillers and as a source of activated carbons. Primary objectives were to determine the relationship of surface area, pore size, pore size distribution, and mineral content on Hg storage of gasifier carbons and to define the site of Hg capture. The ability of gasifier slag carbon to capture NOX and the effect of NOX on Hg adsorption were goals. Secondary goals were the determination of the potential for use of the slags for cement and filler applications. Since gasifier chars have already gone through a devolatilization process in a reducing atmosphere in the gasifier, they only required to be activated to be used as activated carbons. Therefore, the principal objective of the work at PSU was to characterize and utilize gasification slag carbons for the production of activated carbons and other carbon fillers. Tests for the Hg and NOX adsorption potential of these activated gasifier carbons were performed at the CAER. During the course of this project, gasifier slag samples chemically and physically characterized at UK were supplied to PSU who also characterized the samples for sorption characteristics and independently tested for Hg-capture. At the CAER as-received slags were tested for Hg and NOX adsorption. The most promising of these were activated chemically. The PSU group applied thermal and steam activation to a representative group of the gasifier slag samples separated by particle sizes. The activated samples were tested at UK for Hg-sorption and NOX capture and the most promising Hg adsorbers were tested for Hg capture in a simulated flue gas. Both UK and PSU tested the use of the gasifier slag samples as fillers. The CAER analyzed the slags for possible use in cement applications

Rodney Andrews; Aurora Rubel; Jack Groppo; Brock Marrs; Ari Geertsema; Frank Huggins; M. Mercedes Maroto-Valer; Brandie M. Markley; Zhe Lu; Harold Schobert

2006-08-31T23:59:59.000Z

172

Gasification world database 2007. Current industry status  

SciTech Connect

Information on trends and drivers affecting the growth of the gasification industry is provided based on information in the USDOE NETL world gasification database (available on the www.netl.doe.gov website). Sectors cover syngas production in 2007, growth planned through 2010, recent industry changes, and beyond 2010 - strong growth anticipated in the United States. A list of gasification-based power plant projects, coal-to-liquid projects and coal-to-SNG projects under consideration in the USA is given.

NONE

2007-10-15T23:59:59.000Z

173

Catalytic reactor  

DOE Patents (OSTI)

A catalytic reactor is provided with one or more reaction zones each formed of set(s) of reaction tubes containing a catalyst to promote chemical reaction within a feed stream. The reaction tubes are of helical configuration and are arranged in a substantially coaxial relationship to form a coil-like structure. Heat exchangers and steam generators can be formed by similar tube arrangements. In such manner, the reaction zone(s) and hence, the reactor is compact and the pressure drop through components is minimized. The resultant compact form has improved heat transfer characteristics and is far easier to thermally insulate than prior art compact reactor designs. Various chemical reactions are contemplated within such coil-like structures such that as steam methane reforming followed by water-gas shift. The coil-like structures can be housed within annular chambers of a cylindrical housing that also provide flow paths for various heat exchange fluids to heat and cool components.

Aaron, Timothy Mark (East Amherst, NY); Shah, Minish Mahendra (East Amherst, NY); Jibb, Richard John (Amherst, NY)

2009-03-10T23:59:59.000Z

174

Catalytic Coherence  

Science Journals Connector (OSTI)

Because of conservation of energy we cannot directly turn a quantum system with a definite energy into a superposition of different energies. However, if we have access to an additional resource in terms of a system with a high degree of coherence, as for standard models of laser light, we can overcome this limitation. The question is to what extent coherence gets degraded when utilized. Here it is shown that coherence can be turned into a catalyst, meaning that we can use it repeatedly without ever diminishing its power to enable coherent operations. This finding stands in contrast to the degradation of other quantum resources and has direct consequences for quantum thermodynamics, as it shows that latent energy that may be locked into superpositions of energy eigenstates can be released catalytically.

Johan Åberg

2014-10-07T23:59:59.000Z

175

EIS-0412: TX Energy, LLC, Industrial Gasification Facility Near...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

2: TX Energy, LLC, Industrial Gasification Facility Near Beaumont, TX EIS-0412: TX Energy, LLC, Industrial Gasification Facility Near Beaumont, TX February 18, 2009 EIS-0412:...

176

Enabling Small-Scale Biomass Gasification for Liquid Fuel Production...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Enabling Small-Scale Biomass Gasification for Liquid Fuel Production Enabling Small-Scale Biomass Gasification for Liquid Fuel Production Breakout Session 2A-Conversion...

177

Thermochemical Ethanol via Indirect Gasification and Mixed Alcohol...  

Energy Savers (EERE)

Ethanol via Indirect Gasification and Mixed Alcohol Synthesis of Lignocellulosic Biomass Thermochemical Ethanol via Indirect Gasification and Mixed Alcohol Synthesis of...

178

NETL: Gasification Systems - Gas Cleaning  

NLE Websites -- All DOE Office Websites (Extended Search)

Cleaning Cleaning Chemicals from Coal Complex Chemicals from Coal Complex (Eastman Company) Novel gas cleaning and conditioning are crucial technologies for achieving near-zero emissions, while meeting gasification system performance and cost targets. DOE's Gasification Systems program supports technology development in the area of gas cleaning and conditioning, including advanced sorbents and solvents, particulate filters, and other novel gas-cleaning approaches that remove and convert gas contaminants into benign and marketable by-products. To avoid the cost and efficiency penalties associated with cooling the gas stream to temperatures at which conventional gas clean-up systems operate, novel processes are being developed that operate at mild to high temperatures and incorporate multi-contaminant control to

179

Underground coal gasification using oxygen and steam  

SciTech Connect

In this paper, through model experiment of the underground coal gasification, the effects of pure oxygen gasification, oxygen-steam gasification, and moving-point gasification methods on the underground gasification process and gas quality were studied. Experiments showed that H{sub 2} and CO volume fraction in product gas during the pure oxygen gasification was 23.63-30.24% and 35.22-46.32%, respectively, with the gas heating value exceeding 11.00 MJ/m{sup 3}; under the oxygen-steam gasification, when the steam/oxygen ratio stood at 2: 1, gas compositions remained virtually stable and CO + H{sub 2} was basically between 61.66 and 71.29%. Moving-point gasification could effectively improve the changes in the cavity in the coal seams or the effects of roof inbreak on gas quality; the ratio of gas flowing quantity to oxygen supplying quantity was between 3.1:1 and 3.5:1 and took on the linear changes; on the basis of the test data, the reasons for gas quality changes under different gasification conditions were analyzed.

Yang, L.H.; Zhang, X.; Liu, S. [China University of Mining & Technology, Xuzhou (China)

2009-07-01T23:59:59.000Z

180

Chapter 2 - Chemistry of Gasification  

Science Journals Connector (OSTI)

The gasification of any carbonaceous or hydrocarbonaceous material is, essentially, the conversion of the carbon constituents by any one of a variety of chemical processes to produce combustible gases. The process includes a series of reaction steps that convert the feedstock into synthesis gas (syngas, carbon monoxide, CO, plus hydrogen, H2) and other gaseous products. This conversion is generally accomplished by introducing a gasifying agent (air, oxygen, and/or steam) into a reactor vessel containing the feedstock where the temperature, pressure, and flow pattern (moving bed, fluidized, or entrained bed) are controlled. The gaseous products – other than carbon monoxide and hydrogen – and the proportions of these product gases (such as carbon dioxide, CO2, methane, CH4, water vapor, H2O, hydrogen sulfide, H2S, and sulfur dioxide, SO2) depends on the: (1) type of feedstock, (2) the chemical composition of the feedstock, (3) the gasifying agent or gasifying medium, as well as (4) the thermodynamics and chemistry of the gasification reactions as controlled by the process operating parameters. In addition, the kinetic rates and extents of conversion for the several chemical reactions that are a part of the gasification process are variable and are typically functions of: (1) temperature, (2) pressure, and (3) reactor configuration, and (4) the gas composition of the product gases and whether or not these gases influence the outcome of the reaction. It is the purpose of this chapter to present descriptions of the various reactions involved in gasification of carbonaceous and hydrocarbonaceous feedstocks as well as the various thermodynamic aspects of these reactions which dictate the process parameters used to produce the various gases.

James G. Speight

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "injection catalytic gasification" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

EMERY BIOMASS GASIFICATION POWER SYSTEM  

SciTech Connect

Emery Recycling Corporation (now Emery Energy Company, LLC) evaluated the technical and economical feasibility of the Emery Biomass Gasification Power System (EBGPS). The gasifier technology is owned and being developed by Emery. The Emery Gasifier for this project was an oxygen-blown, pressurized, non-slagging gasification process that novelly integrates both fixed-bed and entrained-flow gasification processes into a single vessel. This unique internal geometry of the gasifier vessel will allow for tar and oil destruction within the gasifier. Additionally, the use of novel syngas cleaning processes using sorbents is proposed with the potential to displace traditional amine-based and other syngas cleaning processes. The work scope within this project included: one-dimensional gasifier modeling, overall plant process modeling (ASPEN), feedstock assessment, additional analyses on the proposed syngas cleaning process, plant cost estimating, and, market analysis to determine overall feasibility and applicability of the technology for further development and commercial deployment opportunities. Additionally, the project included the development of a detailed technology development roadmap necessary to commercialize the Emery Gasification technology. Process modeling was used to evaluate both combined cycle and solid oxide fuel cell power configurations. Ten (10) cases were evaluated in an ASPEN model wherein nine (9) cases were IGCC configurations with fuel-to-electricity efficiencies ranging from 38-42% and one (1) case was an IGFC solid oxide case where 53.5% overall plant efficiency was projected. The cost of electricity was determined to be very competitive at scales from 35-71 MWe. Market analysis of feedstock availability showed numerous market opportunities for commercial deployment of the technology with modular capabilities for various plant sizes based on feedstock availability and power demand.

Benjamin Phillips; Scott Hassett; Harry Gatley

2002-11-27T23:59:59.000Z

182

Differences in gasification behaviors and related properties between entrained gasifier fly ash and coal char  

SciTech Connect

In the study, two fly ash samples from Texaco gasifiers were compared to coal char and the physical and chemical properties and reactivity of samples were investigated by scanning electron microscopy (SEM), SEM-energy-dispersive spectrometry (EDS), X-ray diffraction (XRD), N{sub 2} and CO{sub 2} adsorption method, and isothermal thermogravimetric analysis. The main results were obtained. The carbon content of gasified fly ashes exhibited 31-37%, which was less than the carbon content of 58-59% in the feed coal. The fly ashes exhibited higher Brunauer-Emmett-Teller (BET) surface area, richer meso- and micropores, more disordered carbon crystalline structure, and better CO{sub 2} gasification reactivity than coal char. Ashes in fly ashes occurred to agglomerate into larger spherical grains, while those in coal char do not agglomerate. The minerals in fly ashes, especial alkali and alkaline-earth metals, had a catalytic effect on gasification reactivity of fly ash carbon. In the low-temperature range, the gasification process of fly ashes is mainly in chemical control, while in the high-temperature range, it is mainly in gas diffusion control, which was similar to coal char. In addition, the carbon in fly ashes was partially gasified and activated by water vapor and exhibited higher BET surface area and better gasification activity. Consequently, the fact that these carbons in fly ashes from entrained flow gasifiers are reclaimed and reused will be considered to be feasible. 15 refs., 7 figs., 5 tabs.

Jing Gu; Shiyong Wu; Youqing Wu; Ye Li; Jinsheng Gao [East China University of Science and Technology, Shanghai (China). Department of Chemical Engineering for Energy Resources and Key Laboratory of Coal Gasification of Ministry of Education

2008-11-15T23:59:59.000Z

183

Integrating catalytic coal gasifiers with solid oxide fuel cells  

SciTech Connect

A review was conducted for coal gasification technologies that integrate with solid oxide fuel cells (SOFC) to achieve system efficiencies near 60% while capturing and sequestering >90% of the carbon dioxide [1-2]. The overall system efficiency can reach 60% when a) the coal gasifier produces a syngas with a methane composition of roughly 25% on a dry volume basis, b) the carbon dioxide is separated from the methane-rich synthesis gas, c) the methane-rich syngas is sent to a SOFC, and d) the off-gases from the SOFC are recycled back to coal gasifier. The thermodynamics of this process will be reviewed and compared to conventional processes in order to highlight where available work (i.e. exergy) is lost in entrained-flow, high-temperature gasification, and where exergy is lost in hydrogen oxidation within the SOFC. The main advantage of steam gasification of coal to methane and carbon dioxide is that the amount of exergy consumed in the gasifier is small compared to conventional, high temperature, oxygen-blown gasifiers. However, the goal of limiting the amount of exergy destruction in the gasifier has the effect of limiting the rates of chemical reactions. Thus, one of the main advantages of steam gasification leads to one of its main problems: slow reaction kinetics. While conventional entrained-flow, high-temperature gasifiers consume a sizable portion of the available work in the coal oxidation, the consumed exergy speeds up the rates of reactions. And while the rates of steam gasification reactions can be increased through the use of catalysts, only a few catalysts can meet cost requirements because there is often significant deactivation due to chemical reactions between the inorganic species in the coal and the catalyst. Previous research into increasing the kinetics of steam gasification will be reviewed. The goal of this paper is to highlight both the challenges and advantages of integrating catalytic coal gasifiers with SOFCs.

Siefert, N.; Shamsi, A.; Shekhawat, D.; Berry, D.

2010-01-01T23:59:59.000Z

184

DOE Hydrogen Analysis Repository: Biomass Integrated Gasification  

NLE Websites -- All DOE Office Websites (Extended Search)

Biomass Integrated Gasification Combined-Cycle Power Systems Biomass Integrated Gasification Combined-Cycle Power Systems Project Summary Full Title: Cost and Performance Analysis of Biomass-Based Integrated Gasification Combined-Cycle (BIGCC) Power Systems Project ID: 106 Principal Investigator: Margaret Mann Brief Description: This project examines the cost and performance potential of three biomass-based integrated gasification combined cycle (IGCC) systems--high-pressure air blown, low-pressure air blown, and low-pressure indirectly heated. Purpose Examine the cost and performance potential of three biomass-based integrated gasification combined cycle (IGCC) systems - a high pressure air-blown, a low pressure indirectly heated, and a low pressure air-blown. Performer Principal Investigator: Margaret Mann

185

NETL: Gasification Systems - Gasifier Optimization  

NLE Websites -- All DOE Office Websites (Extended Search)

Gasifier Opt & Plant Supporting Systems Gasifier Opt & Plant Supporting Systems Gasification Systems Gasifier Optimization and Plant Supporting Systems The gasifier is the core system component in the gasification process. It determines both the primary requirements for raw material inputs and the product gas composition. The gasifier is generally a high temperature/pressure vessel where oxygen (or air) and steam are directly contacted with a fuel, such as coal, causing a series of chemical reactions to occur that result in production of a fuel gas. This fuel gas (also referred to either as synthesis gas or syngas) consists primarily of hydrogen, carbon monoxide, and carbon dioxide. Minor constituents present in the feedstock are converted to such products as hydrogen sulfide, ammonia, and ash/slag (mineral residues from coal). These products can be separated and captured for use or safe disposal. After cleaning to remove contaminants, the syngas consists mainly of carbon monoxide and hydrogen. According to the Department of Energy's vision for coal gasification, at this point steam may be added and the syngas sent through a water-gas shift (WGS) reactor to convert the carbon monoxide to nothing but carbon dioxide and additional hydrogen. After a gas separation process, the carbon dioxide is ready for utilization (such as for Enhanced Oil Recovery) or safe storage, and the hydrogen can be fired in a gas-turbine/steam-turbine generator set to produce electricity with stack emissions containing no greenhouse gases. Alternately, syngas or hydrogen can be used to produce highly-valued fuels and chemicals. Co-production of combinations of these products and electricity is also possible.

186

A Generalized Pyrolysis Model for Simulating Charring, Intumescent, Smoldering, and Noncharring Gasification  

E-Print Network (OSTI)

on Nonflaming Transient Gasification of PMMA and PE duringT. , & Werner, K. , “Wood Gasification at Fire Level HeatConcentration on Nonflaming Gasification Rates and Evolved

Lautenberger, Chris; Fernandez-Pello, Carlos

2006-01-01T23:59:59.000Z

187

The Development of a Hydrothermal Method for Slurry Feedstock Preparation for Gasification Technology  

E-Print Network (OSTI)

Higman, C. and M. Burgt, Gasification . 2003: Elsevier/Gulfand N.P. Cheremisinoff, Gasification technologies: a primerbiomass (part 3): gasification technologies. Bioresource

He, Wei

2011-01-01T23:59:59.000Z

188

E-Print Network 3.0 - advanced coal-gasification technical Sample...  

NLE Websites -- All DOE Office Websites (Extended Search)

Gasification to Produce SNG (Beulah, North Dakota, USA) (Source:DakotaGasification Petcoke... Source: NETL, 2009 12;12 Dakota Coal Gasification ... Source: Center for...

189

CATALYTIC LIQUEFACTION OF BIOMASS  

E-Print Network (OSTI)

liquid Fuels from Biomass: "Catalyst Screening and KineticUC-61 (l, RCO osn CDL or BIOMASS CATALYTIC LIQUEFACTION ManuCATALYTIC LIQUEFACTION OF BIOMASS Manu Seth, Roger Djafar,

Seth, Manu

2012-01-01T23:59:59.000Z

190

Microsoft Word - 41891_SWPC_Catalytic Combustor_Factsheet_Rev01_04-24.doc  

NLE Websites -- All DOE Office Websites (Extended Search)

891_SWPC_CATALYTIC COMBUSTOR_FACTSHEET_REV01_04-24.DOC 891_SWPC_CATALYTIC COMBUSTOR_FACTSHEET_REV01_04-24.DOC Facts Sheet: Catalytic Combustor for Fuel Flexible Gas Turbine (DE-FC26-03NT41891) I. PROJECT PARTICIPANTS A. Siemens Westinghouse Power Corporation B. Caterpillar/Solar Turbine C. Penn State University D. Southern Company Services II. PROJECT DESCRIPTION A. Objective: To develop and demonstrate a cost effective, fuel flexible (syngas/natural gas) catalytic combustor that will achieve ultra low NOx emissions (2ppm) at the exit of the gas turbine and without the use of backend cleanup in Integrated Gasification Combined Cycle (IGCC) application. B. Background/Relevancy 1. Background: Catalytic combustion has been shown to achieve lowest emissions in conventional gas turbine application (natural gas only). Available technical data indicate that it can be effective

191

CATALYTIC BIOMASS LIQUEFACTION  

E-Print Network (OSTI)

Solvent Systems Catalystic Biomass Liquefaction Investigatereactor Product collection Biomass liquefaction process12-13, 1980 CATALYTIC BIOMASS LIQUEFACTION Sabri Ergun,

Ergun, Sabri

2013-01-01T23:59:59.000Z

192

In Situ Catalytic Ceramic Candle Filtration for Tar Reforming and Particulate Abatement in a Fluidized-Bed Biomass Gasifier  

Science Journals Connector (OSTI)

In Situ Catalytic Ceramic Candle Filtration for Tar Reforming and Particulate Abatement in a Fluidized-Bed Biomass Gasifier ... In fact, the complications resulting from the requirement to obtain a tar-free product often contribute significantly to the overall investment and operating costs of small- to medium-scale gasification units. ...

Sergio Rapagnà; Katia Gallucci; Manuela Di Marcello; Pier Ugo Foscolo; Manfred Nacken; Steffen Heidenreich

2009-06-23T23:59:59.000Z

193

The Gasification of Ponderosa Pine Charcoal  

Science Journals Connector (OSTI)

The gasification of wood chars with CO2 and steam is an important process step in the conversion of biomass to fuel and synthesis gases. Wood fuels can be gasified in a wide variety of sizes, shapes and densities...

Richard Edrich; Timothy Bradley…

1985-01-01T23:59:59.000Z

194

A New Approach to Carbon Gasification  

Science Journals Connector (OSTI)

... carbon monoxide plus hydrogen respectively, under the usual conditions of temperature and pressure applying in gasification practice, the rates of reaction measured by the number of gm. moles of product ...

J. D. BLACKWOOD; F. K. McTAGGART

1959-08-08T23:59:59.000Z

195

Biomass Gasification in Dual Fluidized Bed Gasifier  

Science Journals Connector (OSTI)

The dual fluidized bed gasification technology is prospective because it produces high...2...dilution even when air is used to generate the required endothermic heat via in situ combustion. This study is devoted ...

Toshiyuki Suda; Takahiro Murakami…

2007-01-01T23:59:59.000Z

196

Underground Coal Gasification at Tennessee Colony  

E-Print Network (OSTI)

The Tennessee Colony In Situ Coal Gasification Project conducted by Basic Resources Inc. is the most recent step in Texas Utilities Company's ongoing research into the utilization of Texas lignite. The project, an application of the Soviet...

Garrard, C. W.

1979-01-01T23:59:59.000Z

197

The Role of Oxygen in Coal Gasification  

E-Print Network (OSTI)

Air Products supplies oxygen to a number of coal gasification and partial oxidation facilities worldwide. At the high operating pressures of these processes, economics favor the use of 90% and higher oxygen purities. The effect of inerts...

Klosek, J.; Smith, A. R.; Solomon, J.

198

Partial Gasification for CO2Emissions Reduction  

Science Journals Connector (OSTI)

The chemical reaction during partial gasification of coal follows the form (Nag and Raha, 1994) which is based on the Amagat model for ideal gas mixtures: (9.1) ...

Nirmal V. Gnanapragasam; Bale V. Reddy; Marc A. Rosen

2010-01-01T23:59:59.000Z

199

High-Pressure Gasification of Coal Water Ethanol Slurry in an Entrained Flow Gasifier for Bioethanol Application  

Science Journals Connector (OSTI)

In comparison to CWS gasification, gasification with CWES showed a higher performance, such as composition of hydrogen and carbon monoxide, carbon conversion, cold gas efficiency, and total flow rate of syngas. ... As for the preparation of CWS and CWES, viscosity of 2000 cP or under was maintained while maintaining the maximum coal content, so that the coal particles could be atomized when the slurry was injected into the burner. ... The gasifier was preheated to approximately 1100 °C using a LPG burner, and after feeding CWS or CWES into the gasifier, syngas starts to be produced, whereby pressurization proceeds. ...

Jong-Soo Bae; Dong-Wook Lee; Se-Joon Park; Young-Joo Lee; Jai-Chang Hong; Ho Won Ra; Choon Han; Young-Chan Choi

2012-08-10T23:59:59.000Z

200

Potassium Retention in Updraft Gasification of Wood  

Science Journals Connector (OSTI)

Wood gasifiers are equipment used for a controlled combustion of wood in limited supply of air as the oxidizing medium to generate a combustible product gas. ... Other oxidizing media, such as oxygen and steam, or a combination of any two media can be used in the gasification process. ... The zone where high rates of char combustion and gasification occur is about 15 mm wide above the grate, as determined in a similar-sized gasifier by Di Blasi. ...

Joseph Olwa; Marcus Öhman; Pettersson Esbjörn; Dan Boström; Mackay Okure; Björn Kjellström

2013-10-14T23:59:59.000Z

Note: This page contains sample records for the topic "injection catalytic gasification" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

Environmental Enterprise: Carbon Sequestration using Texaco Gasification Process  

NLE Websites -- All DOE Office Websites (Extended Search)

Environmental Enterprise: Carbon Sequestration using Texaco Carbon Sequestration using Texaco Gasification Process Gasification Process First National Conference on Carbon Sequestration First National Conference on Carbon Sequestration May 16, 2001 May 16, 2001 Jeff Seabright Jeff Seabright Texaco Inc. Texaco Inc. Presentation Highlights Presentation Highlights * * Texaco and climate change Texaco and climate change * * Introduction to gasification Introduction to gasification * * Environmental benefits of gasification Environmental benefits of gasification * * CO CO 2 2 capture & sequestration capture & sequestration * * Challenges going forward Challenges going forward Texaco's Climate Change Policy Texaco's Climate Change Policy * * Know enough to take action now Know enough to take action now

202

Coalbed methane production enhancement by underground coal gasification  

SciTech Connect

The sub-surface of the Netherlands is generally underlain by coal-bearing Carboniferous strata at greater depths (at many places over 1,500 m). These coal seams are generally thinner than 3 meter, occur in groups (5--15) within several hundred meters and are often fairly continuous over many square kilometers. In many cases they have endured complex burial history, influencing their methane saturation. In certain particular geological settings, a high, maximum coalbed methane saturation, may be expected. Carboniferous/Permian coals in the Tianjin-region (China) show many similarities concerning geological settings, rank and composition. Economical coalbed methane production at greater depths is often obstructed by the (very) low permeabilities of the coal seams as with increasing depth the deformation of the coal reduces both its macro-porosity (the cleat system) and microporosity. Experiments in abandoned underground mines, as well as after underground coal gasification tests indicate ways to improve the prospects for coalbed methane production in originally tight coal reservoirs. High permeability areas can be created by the application of underground coal gasification of one of the coal seams of a multi-seam cycle with some 200 meter of coal bearing strata. The gasification of one of the coal seams transforms that seam over a certain area into a highly permeable bed, consisting of coal residues, ash and (thermally altered) roof rubble. Additionally, roof collapse and subsidence will destabilize the overburden. In conjunction this will permit a better coalbed methane production from the remaining surrounding parts of the coal seams. Moreover, the effects of subsidence will influence the stress patterns around the gasified seam and this improves the permeability over certain distances in the coal seams above and below. In this paper the effects of the combined underground coal gasification and coalbed methane production technique are regarded for a single injection well. Known geotechnical aspects are combined with results from laboratory experiments on compaction of thermally treated rubble. An axi-symmetric numerical model is used to determine the effects induced by the gasified coal seam. The calculation includes the rubble formation, rubble compaction and induced stress effects in the overlying strata. Subsequently the stress effects are related to changes in coal permeability, based on experimental results of McKee et al.

Hettema, M.H.H.; Wolf, K.H.A.A.; Neumann, B.V.

1997-12-31T23:59:59.000Z

203

System Study of Rich Catalytic/Lean burn (RCL) Catalytic Combustion for Natural Gas and Coal-Derived Syngas Combustion Turbines  

SciTech Connect

Rich Catalytic/Lean burn (RCL{reg_sign}) technology has been successfully developed to provide improvement in Dry Low Emission gas turbine technology for coal derived syngas and natural gas delivering near zero NOx emissions, improved efficiency, extending component lifetime and the ability to have fuel flexibility. The present report shows substantial net cost saving using RCL{reg_sign} technology as compared to other technologies both for new and retrofit applications, thus eliminating the need for Selective Catalytic Reduction (SCR) in combined or simple cycle for Integrated Gasification Combined Cycle (IGCC) and natural gas fired combustion turbines.

Shahrokh Etemad; Lance Smith; Kevin Burns

2004-12-01T23:59:59.000Z

204

Hanna, Wyoming underground coal gasification data base. Volume 3. The Hanna II, Phase I field test  

SciTech Connect

This report is part of a seven-volume series on the Hanna, Wyoming, underground coal gasification field tests. Volume 1 is a summary of the project, and each of Volumes 2 through 6 describes a particular test. Volume 7 is a compilation of all the data for the tests in Volumes 2 through 6. Hanna II, Phase I was conducted during the spring and summer of 1975, at a site about 700 feet up dip (to the southwest) of the Hanna I test. The test was conducted in two stages - Phase IA and IB. Phase IA consisted of linking and gasification operations between Wells 1 and 3 and Phase IB of linking from the 1-3 gasification zone to Well 2, followed by a short period of gasification from Well 2 to Well 3 over a broad range of air injection rates, in order to determine system turndown capabilities and response times. This report covers: (1) site selection and characteristics; (2) test objectives; (3) facilities description; (4) pre-operational testing; (5) test operations summary; and (6) post-test activity. 7 refs., 11 figs., 8 tabs.

Bartke, T.C.; Fischer, D.D.; King, S.B.; Boyd, R.M.; Humphrey, A.E.

1985-08-01T23:59:59.000Z

205

Effect of Microstructural Changes on Gasification Reactivity of Coal Chars during Low Temperature Gasification  

Science Journals Connector (OSTI)

Effect of Microstructural Changes on Gasification Reactivity of Coal Chars during Low Temperature Gasification ... Pocahontas No. 3, Illinois No. 6, and Beulah-Zap coal char samples were gasified in 1% O2 at 500 °C or 600 °C up to 90% (daf) conversion, and their structure were observed under a high-resolution transmission electron microscope (HRTEM). ...

Atul Sharma; Hayato Kadooka; Takashi Kyotani; Akira Tomita

2001-11-28T23:59:59.000Z

206

Kinetics of steam gasification of bituminous coals in terms of their use for underground coal gasification  

Science Journals Connector (OSTI)

Abstract The kinetics of steam gasification was examined for bituminous coals of a low coal rank. The examined coals can be the raw material for underground coal gasification. Measurements were carried out under isothermal conditions at a high pressure of 4 MPa and temperatures of 800, 900, 950, and 1000 °C. Yields of gasification products such as carbon monoxide and carbon dioxide, hydrogen and methane were calculated based on the kinetic curves of formation reactions of these products. Also carbon conversion degrees are presented. Moreover, calculations were made of the kinetic parameters of carbon monoxide and hydrogen formation reaction in the coal gasification process. The parameters obtained during the examinations enable a preliminary assessment of coal for the process of underground coal gasification.

Stanis?aw Porada; Grzegorz Czerski; Tadeusz Dziok; Przemys?aw Grzywacz; Dorota Makowska

2015-01-01T23:59:59.000Z

207

World Gasification Database Now Available from DOE | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

World Gasification Database Now Available from DOE World Gasification Database Now Available from DOE World Gasification Database Now Available from DOE November 9, 2010 - 12:00pm Addthis Washington, DC - A database just released by the U.S. Department of Energy (DOE) documents the worldwide growth of gasification, the expected technology of choice for future coal-based plants that produce power, fuels, and/or chemicals with near-zero emissions. The 2010 Worldwide Gasification Database, a comprehensive collection of gasification plant data, describes the current world gasification industry and identifies near-term planned capacity additions. The database reveals that the worldwide gasification capacity has continued to grow for the past several decades and is now at 70,817 megawatts thermal (MWth) of syngas

208

Investigation of nickel supported catalysts for the upgrading of brown peat derived gasification products  

Science Journals Connector (OSTI)

A gasification test rig was designed in which peat was gasified under nitrogen over a temperature range 25–550°C at 5°C min?1. The gasification unit resulted in 35.5 wt% of the carbon present in the peat being converted to a volatile fraction. The volatile fraction was transferred to a secondary catalytic reforming reactor at 800°C. The thermal effect of the second reactor resulted in an increase in the CO, CO2 and CH4 content of the volatile fraction, a syngas ratio of 0.75 and a higher heating value (HHV) of 26.5 MJ kg?1. Several nickel-supported catalysts were investigated with the intention that they should give an increase in the conversion of the condensable hydrocarbons in the volatile fraction to CO, CO2 and CH4, and a resultant gas stream suitable for use in an integrated gasification combined cycle plant (IGCC) (i.e. syngas ratio 2:1, low methane content and better HHV). Alumina-supported nickel catalysts investigated gave the highest activities and co-precipitated Ni/Al catalysts were most active. A Ni/Al 3:17 catalyst increased the conversion of the hydrocarbons to 91.5%, gave a syngas ratio of 1.81:1, increased the HHV by a factor of 5.3 and completely eliminated methane from the gas stream.

David Sutton; Brian Kelleher; Aidan Doyle; J.R.H Ross

2001-01-01T23:59:59.000Z

209

Thermochemical Conversion Research and Development: Gasification and Pyrolysis (Fact Sheet)  

SciTech Connect

Biomass gasification and pyrolysis research and development activities at the National Renewable Energy Laboratory and Pacific Northwest National Laboratory.

Not Available

2009-09-01T23:59:59.000Z

210

Biomass Anaerobic Digestion Facilities and Biomass Gasification Facilities (Indiana)  

Energy.gov (U.S. Department of Energy (DOE))

The Indiana Department of Environmental Management requires permits before the construction or expansion of biomass anaerobic digestion or gasification facilities.

211

Cumene by catalytic distillation  

SciTech Connect

Catalytic distillation, a combination of catalytic reaction and distillation in a single column, has several advantages when used in a process to make cumene from benzene and propylene. An extremely high purity cumene is obtained in high yield. The catalytic distillation principle was used in an earlier process to make MTBE. A unit, started up up in Houston refinery in 1981, operated successfully for four years. Since then, three other MTBE units of this design have gone into service.

Shoemaker, J.D.; Jones, E.M. Jr.

1987-06-01T23:59:59.000Z

212

Apparatus for fixed bed coal gasification  

DOE Patents (OSTI)

An apparatus for fixed-bed coal gasification is described in which coal such as caking coal is continuously pyrolyzed with clump formation inhibited, by combining the coal with a combustible gas and an oxidant, and then continually feeding the pyrolyzed coal under pressure and elevated temperature into the gasification region of a pressure vessel. The materials in the pressure vessel are allowed to react with the gasifying agents in order to allow the carbon contents of the pyrolyzed coal to be completely oxidized. The combustion of gas produced from the combination of coal pyrolysis and gasification involves combining a combustible gas coal and an oxidant in a pyrolysis chamber and heating the components to a temperature of at least 1600.degree. F. The products of coal pyrolysis are dispersed from the pyrolyzer directly into the high temperature gasification region of a pressure vessel. Steam and air needed for gasification are introduced in the pressure vessel and the materials exiting the pyrolyzer flow down through the pressure vessel by gravity with sufficient residence time to allow any carbon to form carbon monoxide. Gas produced from these reactions are then released from the pressure vessel and ash is disposed of.

Sadowski, Richard S. (Greenville, SC)

1992-01-01T23:59:59.000Z

213

Plasma Treatments and Biomass Gasification  

Science Journals Connector (OSTI)

Exploitation of forest resources for energy production includes various methods of biomass processing. Gasification is one of the ways to recover energy from biomass. Syngas produced from biomass can be used to power internal combustion engines or, after purification, to supply fuel cells. Recent studies have shown the potential to improve conventional biomass processing by coupling a plasma reactor to a pyrolysis cyclone reactor. The role of the plasma is twofold: it acts as a purification stage by reducing production of tars and aerosols, and simultaneously produces a rich hydrogen syngas. In a first part of the paper we present results obtained from plasma treatment of pyrolysis oils. The outlet gas composition is given for various types of oils obtained at different experimental conditions with a pyrolysis reactor. Given the complexity of the mixtures from processing of biomass, we present a study with methanol considered as a model molecule. This experimental method allows a first modeling approach based on a combustion kinetic model suitable to validate the coupling of plasma with conventional biomass process. The second part of the paper is summarizing results obtained through a plasma-pyrolysis reactor arrangement. The goal is to show the feasibility of this plasma-pyrolysis coupling and emphasize more fundamental studies to understand the role of the plasma in the biomass treatment processes.

J Luche; Q Falcoz; T Bastien; J P Leninger; K Arabi; O Aubry; A Khacef; J M Cormier; J Lédé

2012-01-01T23:59:59.000Z

214

5 - Gasification reaction kinetics for synthetic liquid fuel production  

Science Journals Connector (OSTI)

Abstract The gasification process is a chemically and physically complex operation. This chapter presents a description of the chemistry of gasification reactions. It also discusses the assorted reactions involved in gasification and the various thermodynamic aspects of these reactions that dictate the process parameters used to produce the various gases.

J.G. Speight

2015-01-01T23:59:59.000Z

215

The Public Perceptions of Underground Coal Gasification (UCG)  

E-Print Network (OSTI)

The Public Perceptions of Underground Coal Gasification (UCG): A Pilot Study Simon Shackley #12;The Public Perceptions of Underground Coal Gasification (UCG): A Pilot Study Dr Simon Shackley of Underground Coal Gasification (UCG) in the United Kingdom. The objectives were to identify the main dangers

Watson, Andrew

216

Gasification of woody biomass Tessa Jansen (s0140600)  

E-Print Network (OSTI)

1 Gasification of woody biomass Tessa Jansen (s0140600) University of Twente Internship at SINTEF costs. So I would be working on biomass gasification and perform thermo gravimetric analysis (TGA process and char reactivity has been investigated by performing multiple gasification, pyrolysis

Luding, Stefan

217

Effect of thermal treatment on coke reactivity and catalytic iron mineralogy  

SciTech Connect

Iron minerals in coke can catalyze its gasification and may affect coke behavior in the blast furnace. The catalytic behavior of iron depends largely upon the nature of the iron-bearing minerals. To determine the mineralogical changes that iron could undergo in the blast furnace, cokes made from three coals containing iron present in different mineral forms (clays, carbonates, and pyrite) were examined. All coke samples were heat-treated in a horizontal furnace at 1373, 1573, and 1773 K and then gasified with CO{sub 2} at 1173 K in a fixed bed reactor (FBR). Coke mineralogy was characterized using quantitative X-ray diffraction (XRD) analysis of coke mineral matter prepared by low-temperature ashing (LTA) and field emission scanning electron microscopy combined with energy dispersive X-ray analysis (FESEM/EDS). The mineralogy of the three cokes was most notably distinguished by differing proportions of iron-bearing phases. During heat treatment and subsequent gasification, iron-containing minerals transformed to a range of minerals but predominantly iron-silicides and iron oxides, the relative amounts of which varied with heat treatment temperature and gasification conditions. The relationship between initial apparent reaction rate and the amount of catalytic iron minerals - pyrrhotite, metallic iron, and iron oxides - was linear and independent of heat treatment temperature at total catalyst levels below 1 wt %. The study showed that the coke reactivity decreased with increasing temperature of heat treatment due to decreased levels of catalytic iron minerals (largely due to formation of iron silicides) as well as increased ordering of the carbon structure. The study also showed that the importance of catalytic mineral matter in determining reactivity declines as gasification proceeds. 37 refs., 13 figs., 7 tabs.

Byong-chul Kim; Sushil Gupta; David French; Richard Sakurovs; Veena Sahajwalla [University of New South Wales, Sydney, NSW (Australia). Centre for Sustainable Materials Research and Technology

2009-07-15T23:59:59.000Z

218

Biomass Gasification in Fluidized Bed:? Where To Locate the Dolomite To Improve Gasification?  

Science Journals Connector (OSTI)

Figure 5 Steam content in the flue gas vs relative amount of dolomite used for two different locations of the dolomite and for two gasifying agents; (a) gasification with H2O + O2 mixtures, GR = 0.86?1.16, ... Figure 6 Low heating value of the flue gas for two locations of the dolomite and for two gasifying agents; (a) gasification with H2O + O2 mixtures, GR = 0.86?1.16, ... Figure 7 Gas yield for two locations of the dolomite and for two gasifying agents; (a) gasification with H2O + O2 mixtures; GR = 0.86?1.16, ...

José Corella; María-Pilar Aznar; Javier Gil; Miguel A. Caballero

1999-10-28T23:59:59.000Z

219

Process for fixed bed coal gasification  

DOE Patents (OSTI)

The combustion of gas produced from the combination of coal pyrolysis and gasification involves combining a combustible gas coal and an oxidant in a pyrolysis chamber and heating the components to a temperature of at least 1600.degree. F. The products of coal pyrolysis are dispersed from the pyrolyzer directly into the high temperature gasification region of a pressure vessel. Steam and air needed for gasification are introduced in the pressure vessel and the materials exiting the pyrolyzer flow down through the pressure vessel by gravity with sufficient residence time to allow any carbon to form carbon monoxide. Gas produced from these reactions are then released from the pressure vessel and ash is disposed of.

Sadowski, Richard S. (Greenville, SC)

1992-01-01T23:59:59.000Z

220

Catalytic distillation structure  

SciTech Connect

Catalytic distillation structure for use in reaction distillation columns, a providing reaction sites and distillation structure and consisting of a catalyst component and a resilient component intimately associated therewith. The resilient component has at least about 70 volume % open space and being present with the catalyst component in an amount such that the catalytic distillation structure consist of at least 10 volume % open space.

Smith, Jr., Lawrence A. (Bellaire, TX)

1984-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "injection catalytic gasification" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

Production of Hydrogen from Underground Coal Gasification  

DOE Patents (OSTI)

A system of obtaining hydrogen from a coal seam by providing a production well that extends into the coal seam; positioning a conduit in the production well leaving an annulus between the conduit and the coal gasification production well, the conduit having a wall; closing the annulus at the lower end to seal it from the coal gasification cavity and the syngas; providing at least a portion of the wall with a bifunctional membrane that serves the dual purpose of providing a catalyzing reaction and selectively allowing hydrogen to pass through the wall and into the annulus; and producing the hydrogen through the annulus.

Upadhye, Ravindra S. (Pleasanton, CA)

2008-10-07T23:59:59.000Z

222

Major Environmental Aspects of Gasification-Based Power Generation Technologies  

NLE Websites -- All DOE Office Websites (Extended Search)

Detailed Evaluation of the Environmental Performance of Gasification-Based Power Systems Detailed Evaluation of the Environmental Performance of Gasification-Based Power Systems DECEMBER 2002 U.S. DOE/NETL 2-1 2. DETAILED EVALUATION OF THE ENVIRONMENTAL PERFORMANCE OF GASIFICATION-BASED POWER SYTEMS 2.1 Introduction and Summary of Information Presented The single most compelling reason for utilities to consider coal gasification for electric power generation is superior environmental performance. 1 As shown in Figure 2-1, gasification has fundamental environmental advantages over direct coal combustion. Commercial-scale plants for both integrated gasification combined cycle (IGCC) electric power generation and chemicals applications have already successfully demonstrated these advantages. The superior environmental capabilities of coal gasification apply to all three areas of concern: air emissions,

223

Heavy metals behaviour in a gasification reactor  

Science Journals Connector (OSTI)

Sludge coming from cleaning processes of wastewater, Municipal Solid Waste (MSW), and Refuse Derived Fuel (RDF) can be exploited for producing energy because of their heating value. Cleaning the produced syngas is important because of environmental troubles, ... Keywords: heavy metals, syngas, thermodynamic, waste gasification

Martino Paolucci; Carlo Borgianni; Paolo De Filippis

2011-07-01T23:59:59.000Z

224

Gasification characteristics of eastern oil shale  

SciTech Connect

The Institute of Gas Technology (IGT) is evaluating the gasification characteristics of Eastern oil shales as a part of a cooperative agreement between the US Department of Energy and HYCRUDE Corporation to expand the data base on moving-bed hydroretorting of Eastern oil shales. Gasification of shale fines will improve the overall resource utilization by producing synthesis gas or hydrogen needed for the hydroretorting of oil shale and the upgrading of shale oil. Gasification characteristics of an Indiana New Albany oil shale have been determined over temperature and pressure ranges of 1600 to 1900/sup 0/F and 15 to 500 psig, respectively. Carbon conversion of over 95% was achieved within 30 minutes at gasification conditions of 1800/sup 0/F and 15 psig in a hydrogen/steam gas mixture for the Indiana New Albany oil shale. This paper presents the results of the tests conducted in a laboratory-scale batch reactor to obtain reaction rate data and in a continuous mini-bench-scale unit to obtain product yield data. 2 refs., 7 figs., 4 tabs.

Lau, F.S.; Rue, D.M.; Punwani, D.V.; Rex, R.C. Jr.

1986-11-01T23:59:59.000Z

225

Biomass Gasification at The Evergreen State College  

E-Print Network (OSTI)

Biomass Gasification at The Evergreen State College Written by Students of the Winter 2011 Program "Applied Research: Biomass, Energy, and Environmental Justice" At The Evergreen State College, Olympia://blogs.evergreen.edu/appliedresearch/ #12; i Table of Contents Chapter 1: Introduction to Biomass at the Evergreen State College by Dani

226

World Gasification Database Now Available from DOE  

Energy.gov (U.S. Department of Energy (DOE))

A database just released by the U.S. Department of Energy documents the worldwide growth of gasification, the expected technology of choice for future coal-based plants that produce power, fuels, and/or chemicals with near-zero emissions.

227

Optimum Design of Coal Gasification Plants  

E-Print Network (OSTI)

This paper deals with the optimum design of heat recovery systems using the Texaco Coal Gasification Process (TCGP). TCGP uses an entrained type gasifier and produces hot gases at approximately 2500oF with high heat flux. This heat is removed...

Pohani, B. P.; Ray, H. P.; Wen, H.

1982-01-01T23:59:59.000Z

228

NETL: Gasification Systems and Industry Analyses Studies  

NLE Websites -- All DOE Office Websites (Extended Search)

Analyses Studies Analyses Studies Gasification Systems Reference Shelf – Systems and Industry Analyses Studies Table of Contents Cost and Performance Baseline for Fossil Energy Power Plants Studies Gasification Systems Program's Systems and Industry Analyses Studies DOE/NETL possesses strong systems analysis and policy-support capabilities. Systems analysis in support of the Gasification Systems Program consists of conducting various energy analyses that provide input to decisions on issues such as national plans and programs, resource use, environmental and energy security policies, technology options for research and development programs, and paths to deployment of energy technology. Cost and Performance Baseline for Fossil Energy Power Plants Studies The Cost and Performance Baseline for Fossil Energy Power Plants studies establish up-to-date estimates for the cost and performance of combustion and gasification based power plants as well as options for co-generating synthetic natural gas and fuels, all with and without carbon dioxide capture and storage. Several ranks of coal are being assessed in process configurations that are based on technology that could be constructed today such that the plant could be operational in the 2010 - 2015 timeframe. The analyses were performed on a consistent technical and economic basis that accurately reflects current market conditions.

229

Syngas Production by Thermochemical Gasification of Carbonaceous Waste Materials in a 150 kWth Packed-Bed Solar Reactor  

Science Journals Connector (OSTI)

The carbonaceous feedstocks experimentally investigated included coal,(9-11) petcoke,(12, 13) cellulose,(14, 15) biochar,(11, 16) and waste materials such as scrap tire chips and powders, dried sewage sludge, industrial sludges, and fluff. ... reactor for the steam-gasification of petcoke, carried out in a high-flux solar furnace. ... A petcoke-water slurry was continuously injected into a solar cavity-receiver to create a vortex flow directly exposed to concd. ...

Christian Wieckert; Albert Obrist; Peter von Zedtwitz; Gilles Maag; Aldo Steinfeld

2013-07-16T23:59:59.000Z

230

Factors influencing coke gasification with carbon dioxide.  

E-Print Network (OSTI)

??Of all coke properties the influence of the catalytic mineral matter on reactivity of metallurgical cokes is least understood. There is limited information about the… (more)

Grigore, Mihaela

2007-01-01T23:59:59.000Z

231

Coal properties and system operating parameters for underground coal gasification  

SciTech Connect

Through the model experiment for underground coal gasification, the influence of the properties for gasification agent and gasification methods on underground coal gasifier performance were studied. The results showed that pulsating gasification, to some extent, could improve gas quality, whereas steam gasification led to the production of high heating value gas. Oxygen-enriched air and backflow gasification failed to improve the quality of the outlet gas remarkably, but they could heighten the temperature of the gasifier quickly. According to the experiment data, the longitudinal average gasification rate along the direction of the channel in the gasifying seams was 1.212 m/d, with transverse average gasification rate 0.069 m/d. Experiment indicated that, for the oxygen-enriched steam gasification, when the steam/oxygen ratio was 2:1, gas compositions remained stable, with H{sub 2} + CO content virtually standing between 60% and 70% and O{sub 2} content below 0.5%. The general regularities of the development of the temperature field within the underground gasifier and the reasons for the changes of gas quality were also analyzed. The 'autopneumatolysis' and methanization reaction existing in the underground gasification process were first proposed.

Yang, L. [China University of Mining & Technology, Xuzhou (China)

2008-07-01T23:59:59.000Z

232

Catalytic distillation process  

DOE Patents (OSTI)

A method is described for conducting chemical reactions and fractionation of the reaction mixture comprising feeding reactants to a distillation column reactor into a feed zone and concurrently contacting the reactants with a fixed bed catalytic packing to concurrently carry out the reaction and fractionate the reaction mixture. For example, a method for preparing methyl tertiary butyl ether in high purity from a mixed feed stream of isobutene and normal butene comprising feeding the mixed feed stream to a distillation column reactor into a feed zone at the lower end of a distillation reaction zone, and methanol into the upper end of said distillation reaction zone, which is packed with a properly supported cationic ion exchange resin, contacting the C[sub 4] feed and methanol with the catalytic distillation packing to react methanol and isobutene, and concurrently fractionating the ether from the column below the catalytic zone and removing normal butene overhead above the catalytic zone.

Smith, L.A. Jr.

1982-06-22T23:59:59.000Z

233

Catalytic distillation process  

DOE Patents (OSTI)

A method for conducting chemical reactions and fractionation of the reaction mixture comprising feeding reactants to a distillation column reactor into a feed zone and concurrently contacting the reactants with a fixed bed catalytic packing to concurrently carry out the reaction and fractionate the reaction mixture. For example, a method for preparing methyl tertiary butyl ether in high purity from a mixed feed stream of isobutene and normal butene comprising feeding the mixed feed stream to a distillation column reactor into a feed zone at the lower end of a distillation reaction zone, and methanol into the upper end of said distillation reaction zone, which is packed with a properly supported cationic ion exchange resin, contacting the C.sub.4 feed and methanol with the catalytic distillation packing to react methanol and isobutene, and concurrently fractionating the ether from the column below the catalytic zone and removing normal butene overhead above the catalytic zone.

Smith, Jr., Lawrence A. (Bellaire, TX)

1982-01-01T23:59:59.000Z

234

Catalytic Combustion Processes  

Science Journals Connector (OSTI)

This work presents experimental data on the effect of catalytic additives on the combustion characteristics of ammonium nitrate and perchlorate and the explosives of different classes. Burning rates are determ...

A. P. Glaskova

1991-01-01T23:59:59.000Z

235

Catalytic distillation structure  

DOE Patents (OSTI)

Catalytic distillation structure is described for use in reaction distillation columns, and provides reaction sites and distillation structure consisting of a catalyst component and a resilient component intimately associated therewith. The resilient component has at least about 70 volume % open space and is present with the catalyst component in an amount such that the catalytic distillation structure consists of at least 10 volume % open space. 10 figs.

Smith, L.A. Jr.

1984-04-17T23:59:59.000Z

236

Regenerative catalytic oxidation  

SciTech Connect

Currently Regenerative Thermal Oxidizers (R.T.O.`s) are an accepted technology for the control of volatile organic compounds (VOC`s) and hazardous air pollutants (HAP`s). This control technology, when introduced, offered substantial reductions in operating costs, especially auxiliary fuel requirements when compared to existing control technologies such as recuperative thermal and recuperative catalytic oxidizers. While these savings still exist, there is a demand for control of new and/or hybrid technologies, one of which is Regenerative Catalytic Oxidizers (R.C.O.`s). This paper will explore the development of regenerative catalytic oxidation from the theoretical stage through pilot testing through a commercial installation. The operating cost of R.C.O.`s will be compared to R.T.O.`s to verify the savings that are achievable through the use of regenerative catalytic oxidation. In the development of this technology, which is a combination of two (2) existing technologies, R.T.O.`s and catalysis, a second hybrid technology was explored and pilot tested. This is a combination R.C.O. for VOC and HAP control and simultaneous SCR (Selective Catalytic Reduction) for NOx (Oxides of Nitrogen) control. Based on the pilot and full scale testing, both regenerative catalytic oxidizers and systems which combine R.C.O. with SCR for both VOC and NOx reduction are economically viable and are in fact commercially available. 6 figs., 2 tabs.

Gribbon, S.T. [Engelhard Process Emission Systems, South Lyon, MI (United States)

1996-12-31T23:59:59.000Z

237

Gasification of Organosolv-lignin Over Charcoal Supported Noble Metal Salt Catalysts in Supercritical Water  

Science Journals Connector (OSTI)

Charcoal supported metal salt catalysts showed activities for the lignin gasification at 673 K, especially the catalysts without chloride anion showed the complete gasification. The order of activity for the gasification

Aritomo Yamaguchi; Norihito Hiyoshi; Osamu Sato; Masayuki Shirai

2012-08-01T23:59:59.000Z

238

Fixed Bed Counter Current Gasification of Mesquite and Juniper Biomass Using Air-steam as Oxidizer  

E-Print Network (OSTI)

Thermal gasification of biomass is being considered as one of the most promising technologies for converting biomass into gaseous fuel. Here we present results of gasification, using an adiabatic bed gasifier with air, steam as gasification medium...

Chen, Wei 1981-

2012-11-27T23:59:59.000Z

239

Major Environmental Aspects of Gasification-Based Power Generation Technologies  

NLE Websites -- All DOE Office Websites (Extended Search)

Detailed Detailed Evaluation of the Environmental Performance of Gasification-Based Power Systems DECEMBER 2002 U.S. DOE/NETL 2-1 2. DETAILED EVALUATION OF THE ENVIRONMENTAL PERFORMANCE OF GASIFICATION-BASED POWER SYTEMS 2.1 Introduction and Summary of Information Presented The single most compelling reason for utilities to consider coal gasification for electric power generation is superior environmental performance. 1 As shown in Figure 2-1, gasification has fundamental environmental advantages over direct coal combustion. Commercial-scale plants for both integrated gasification combined cycle (IGCC) electric power generation and chemicals applications have already successfully demonstrated these advantages. The superior environmental capabilities of coal gasification apply to all three areas of concern: air emissions, water discharges, and solid

240

Advanced Biomass Gasification Technologies Inc ABGT | Open Energy  

Open Energy Info (EERE)

Gasification Technologies Inc ABGT Gasification Technologies Inc ABGT Jump to: navigation, search Name Advanced Biomass Gasification Technologies Inc. (ABGT) Place New York, New York Zip 10036 Product Company set up by UTEK specifically for its sale to Xethanol, holding the exclusive license for microgasification technology developed at the Energy and Environmental Research Center (EERC) at the University of North Dakota. References Advanced Biomass Gasification Technologies Inc. (ABGT)[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Advanced Biomass Gasification Technologies Inc. (ABGT) is a company located in New York, New York . References ↑ "Advanced Biomass Gasification Technologies Inc. (ABGT)"

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241

How Coal Gasification Power Plants Work | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Gasification » How Coal Gasification » How Coal Gasification Power Plants Work How Coal Gasification Power Plants Work How Coal Gasification Power Plants Work The heart of a gasification-based system is the gasifier. A gasifier converts hydrocarbon feedstock into gaseous components by applying heat under pressure in the presence of steam. A gasifier differs from a combustor in that the amount of air or oxygen available inside the gasifier is carefully controlled so that only a relatively small portion of the fuel burns completely. This "partial oxidation" process provides the heat. Rather than burning, most of the carbon-containing feedstock is chemically broken apart by the gasifier's heat and pressure, setting into motion chemical reactions that produce "syngas." Syngas is primarily hydrogen and carbon monoxide, but can include

242

Biomass gasification using low-temperature solar-driven steam supply  

Science Journals Connector (OSTI)

Abstract A numerical modeling study on the low-temperature steam gasification process is presented to outline the possibility to drive the process with an integrated Concentrated Solar Power (CSP) plant, which provides low-temperature steam, with the aim of preserving a comparable efficiency of the new plant with traditional high-temperature biomass gasification processes. To meet this, the effective parameters and operating conditions are assessed and determined for low-temperature biomass gasification by means of sensitivity analysis, in order to find out the optimal design of the new gasifier. Crucial parameters comprise the residence time of the solid fuel and of the gas phase (leading to efficient gas–solid interactions), as well as the amount of injected oxygen and steam. Moreover, several operative parameters such as content of moisture in the biomass feedstock, size of the solid particles, equivalence ratio and structural components amount in the biomass feedstock are taken into account to optimize the operation. The molar ratio of H2/CO has been selected as a benchmark of efficiency in the process because the produced syngas would be applied in the methanol synthesis process, which needs a molar ratio of H2/CO close to the value of two. The percentage of the solid residue (weight % of the solid feedstock) has been evaluated along with the molar ratio of H2/CO in the low-temperature process to guide the re-design of the solar driven gasifier, in terms of reactor volume and amount of required oxygen and steam, which are necessary to sustain the process. The modeling and simulation to design the process have been accomplished by a comprehensive modeling package (GASDS), which includes kinetics of biomass devolatilization and pyrolysis, gasification, and secondary gas phase kinetic schemes. The gasifier, owing to its intrinsic multi-scale nature, is simulated describing both the particle and the reactor scales.

Zohreh Ravaghi-Ardebili; Flavio Manenti; Michele Corbetta; Carlo Pirola; Eliseo Ranzi

2015-01-01T23:59:59.000Z

243

System study on partial gasification combined cycle with CO{sub 2} recovery - article no. 051801  

SciTech Connect

S partial gasification combined cycle with CO{sub 2} recovery is proposed in this paper. Partial gasification adopts cascade conversion of the composition of coal. Active composition of coal is simply gasified, while inactive composition, that is char, is burnt in a boiler. Oxy-fuel combustion of syngas produces only CO{sub 2} and H{sub 2}O, so the CO{sub 2} can be separated through cooling the working fluid. This decreases the amount of energy consumption to separate CO{sub 2} compared with conventional methods. The novel system integrates the above two key technologies by injecting steam from a steam turbine into the combustion chamber of a gas turbine to combine the Rankine cycle with the Brayton cycle. The thermal efficiency of this system will be higher based on the cascade utilization of energy level. Compared with the conventional integrated gasification combined cycle (IGCC), the compressor of the gas turbine, heat recovery steam generator (HRSG) and gasifier are substituted for a pump, reheater, and partial gasifier, so the system is simplified. Furthermore, the novel system is investigated by means of energy-utilization diagram methodology and provides a simple analysis of their economic and environmental performance. As a result, the thermal efficiency of this system may be expected to be 45%, with CO{sub 2} recovery of 41.2%, which is 1.5-3.5% higher than that of an IGCC system. At the same time, the total investment cost of the new system is about 16% lower than that of an IGCC. The comparison between the partial gasification technology and the IGCC technology is based on the two representative cases to identify the specific feature of the proposed system.

Xu, Y.J.; Jin, H.G.; Lin, R.M.; Han, W. [Chinese Academy of Science, Beijing (China)

2008-09-15T23:59:59.000Z

244

Method for increasing steam decomposition in a coal gasification process  

DOE Patents (OSTI)

The gasification of coal in the presence of steam and oxygen is significantly enhanced by introducing a thermochemical water-splitting agent such as sulfuric acid, into the gasifier for decomposing the steam to provide additional oxygen and hydrogen usable in the gasification process for the combustion of the coal and enrichment of the gaseous gasification products. The addition of the water-splitting agent into the gasifier also allows for the operation of the reactor at a lower temperature.

Wilson, Marvin W. (Fairview, WV)

1988-01-01T23:59:59.000Z

245

Method for increasing steam decomposition in a coal gasification process  

DOE Patents (OSTI)

The gasification of coal in the presence of steam and oxygen is significantly enhanced by introducing a thermochemical water- splitting agent such as sulfuric acid, into the gasifier for decomposing the steam to provide additional oxygen and hydrogen usable in the gasification process for the combustion of the coal and enrichment of the gaseous gasification products. The addition of the water-splitting agent into the gasifier also allows for the operation of the reactor at a lower temperature.

Wilson, M.W.

1987-03-23T23:59:59.000Z

246

E-Print Network 3.0 - adiabatic fixed-bed gasification Sample...  

NLE Websites -- All DOE Office Websites (Extended Search)

State University ABSTRACT Gasification is a globally emerging technology in commercial markets... of the most developed and versatile gasification technologies is based upon...

247

NETL: 2013 Gasification Systems Project Portfolio  

NLE Websites -- All DOE Office Websites (Extended Search)

Reference Shelf > Project Portfolio Reference Shelf > Project Portfolio Gasification Systems 2013 Gasification Systems Project Portfolio Gasifier Optimization Gas Separation Gas Separation Gasifier Optimization Gasifier Optimization Gas Cleaning Gasifier Optimization Gas Cleaning Gas Separation U.S. Economic Competitiveness Gas Separation Gasifier Optimization U.S. Economic Competitiveness Gasifier Optimization U.S. Economic Competitiveness Gas Cleaning Gasifier Optimization Gas Cleaning Gasifier Optimization Gas Separation U.S. Economic Competitiveness Gas Separation U.S. Economic Competitiveness U.S. Economic Competitiveness Gas Cleaning Gas Cleaning Gas Separation Gas Cleaning Gas Separation Global Environmental Benefits Gas Separation Global Environmental Benefits Global Environmental Benefits Gas Cleaning Gas Separation Systems Analyses Global Environmental Benefits Gas Separation Systems Analyses Global Environmental Benefits Systems Analyses Global Environmental Benefits Gas Cleaning Systems Analyses Gas Cleaning Gas Separation Systems Analyses Systems Analyses Gas Cleaning Systems Analyses Systems Analyses Systems Analyses

248

Fluidized bed gasification of extracted coal  

DOE Patents (OSTI)

Coal or similar carbonaceous solids are extracted by contacting the solids in an extraction zone (12) with an aqueous solution having a pH above 12.0 at a temperature between 65.degree. C. and 110.degree. C. for a period of time sufficient to remove bitumens from the coal into said aqueous solution and the extracted solids are then gasified at an elevated pressure and temperature in a fluidized bed gasification zone (60) wherein the density of the fluidized bed is maintained at a value above 160 kg/m.sup.3. In a preferred embodiment of the invention, water is removed from the aqueous solution in order to redeposit the extracted bitumens onto the solids prior to the gasification step.

Aquino, Dolores C. (Houston, TX); DaPrato, Philip L. (Westfield, NJ); Gouker, Toby R. (Baton Rouge, LA); Knoer, Peter (Houston, TX)

1986-01-01T23:59:59.000Z

249

Gasification performance of switchgrass pretreated with torrefaction and densification  

SciTech Connect

The purpose of this study was to investigate gasification performance of four switchgrass pretreatments (torrefaction at 230 and 270 °C, densification, and combined torrefaction and densification) and three gasification temperatures (700, 800 and 900 °C). Gasification was performed in a fixed-bed externally heated reactor with air as an oxidizing agent. Switchgrass pretreatment and gasification temperature had significant effects on gasification performance such as gas yields, syngas lower heating value (LHV), and carbon conversion and cold gas efficiencies. With an increase in the gasification temperature, yields of H2 and CO, syngas LHV, and gasifier efficiencies increased whereas CH4, CO2 and N2 yields decreased. Among all switchgrass pretreatments, gasification performance of switchgrass with combined torrefaction and densification was the best followed by that of densified, raw and torrefied switchgrass. Gasification of combined torrefied and densified switchgrass resulted in the highest yields of H2 (0.03 kg/kg biomass) and CO (0.72 kg/kg biomass), highest syngas LHV (5.08 MJ m-3), CCE (92.53%), and CGE (68.40%) at the gasification temperature of 900 °C.

Jaya Shankar Tumuluru; Various

2014-08-01T23:59:59.000Z

250

EIS-0383: Southern Company's Orlando Gasification Project, Orlando, FL  

Energy.gov (U.S. Department of Energy (DOE))

This EIS analyzes DOE's decision to provide cost-shared funding for construction, design, and operation of a new gasification plant in Orlando, Florida.

251

Biomass Gasification and Methane Digester Property Tax Exemption  

Energy.gov (U.S. Department of Energy (DOE))

Michigan exempts certain energy production related farm facilities from real and personal property taxes. Among exempted property are certain methane digesters, biomass gasification equipment,...

252

Upgrading of Pitch Produced by Mild Gasification of Subbituminous Cal  

Science Journals Connector (OSTI)

Upgrading of Pitch Produced by Mild Gasification of Subbituminous Cal ... Structural Characterization of Coal Tar Pitches Obtained by Heat Treatment under Different Conditions ...

Robert L. McCormick; Mahesh C. Jha

1994-03-01T23:59:59.000Z

253

Underground coal gasification : overview of an economic and environmental evaluation.  

E-Print Network (OSTI)

??This paper examines an overview of the economic and environmental aspects of Underground Coal Gasification (UCG) as a viable option to the above ground Surface… (more)

Kitaka, Richard Herbertson

2012-01-01T23:59:59.000Z

254

Coal Gasification in a Transport Reactor  

Science Journals Connector (OSTI)

These simulations were used to compare the response of coals gasified to those combusted substoichiometrically, to evaluate the optimum operating conditions and to predict the performance in larger-scale units with less heat loss. ... Entrained-flow gasifiers use high temperatures (1350?1550 °C) and gasify coals in 2?3 s. ... Kinetic studies were carried out to elucidate the mechanisms of steam and CO2 gasification of char and the interactions of these gasifying agents. ...

Lawrence J. Shadle; Esmail R. Monazam; Michael L. Swanson

2001-05-25T23:59:59.000Z

255

Gasification Product Improvement Facility (GPIF). Final report  

SciTech Connect

The gasifier selected for development under this contract is an innovative and patented hybrid technology which combines the best features of both fixed-bed and fluidized-bed types. PyGas{trademark}, meaning Pyrolysis Gasification, is well suited for integration into advanced power cycles such as IGCC. It is also well matched to hot gas clean-up technologies currently in development. Unlike other gasification technologies, PyGas can be designed into both large and small scale systems. It is expected that partial repowering with PyGas could be done at a cost of electricity of only 2.78 cents/kWh, more economical than natural gas repowering. It is extremely unfortunate that Government funding for such a noble cause is becoming reduced to the point where current contracts must be canceled. The Gasification Product Improvement Facility (GPIF) project was initiated to provide a test facility to support early commercialization of advanced fixed-bed coal gasification technology at a cost approaching $1,000 per kilowatt for electric power generation applications. The project was to include an innovative, advanced, air-blown, pressurized, fixed-bed, dry-bottom gasifier and a follow-on hot metal oxide gas desulfurization sub-system. To help defray the cost of testing materials, the facility was to be located at a nearby utility coal fired generating site. The patented PyGas{trademark} technology was selected via a competitive bidding process as the candidate which best fit overall DOE objectives. The paper describes the accomplishments to date.

NONE

1995-09-01T23:59:59.000Z

256

Black liquor gasification. Phase 2 final report  

SciTech Connect

The experimental work included 23 bench-scale tests in a 6-in.-diameter gasifier and two extended runs in a 33-in.-ID pilot-scale unit. The two pilot-scale runs included 26 test periods, each evaluated separately. The engineering analysis work consisted primarily of the correlation of test results and the development of a computer model describing the gasification process. 4 refs., 13 figs., 23 tabs.

Kohl, A.L.; Barclay, K.M.; Stewart, A.E.; Estes, G.R.

1984-11-28T23:59:59.000Z

257

Improved Refractory Materials for Slagging Gasification Systems  

NLE Websites -- All DOE Office Websites (Extended Search)

Fac Fac ts Materials Science contact Bryan Morreale Focus Area Leader (Acting) Materials Science Office of Research and Development National Energy Technology Laboratory 626 Cochrans Mill Road P.O. Box 10940 Pittsburgh, PA 15326 412-386-5929 bryan.morreale@netl.doe.gov Partner Harbison-Walker Refractories Company Improved Refractory Materials for Slagging Gasification Systems Advances in technology are often directly linked to materials development. For

258

Catalytic nanoporous membranes  

DOE Patents (OSTI)

A nanoporous catalytic membrane which displays several unique features Including pores which can go through the entire thickness of the membrane. The membrane has a higher catalytic and product selectivity than conventional catalysts. Anodic aluminum oxide (AAO) membranes serve as the catalyst substrate. This substrate is then subjected to Atomic Layer Deposition (ALD), which allows the controlled narrowing of the pores from 40 nm to 10 nm in the substrate by deposition of a preparatory material. Subsequent deposition of a catalytic layer on the inner surfaces of the pores reduces pore sizes to less than 10 nm and allows for a higher degree of reaction selectivity. The small pore sizes allow control over which molecules enter the pores, and the flow-through feature can allow for partial oxidation of reactant species as opposed to complete oxidation. A nanoporous separation membrane, produced by ALD is also provided for use in gaseous and liquid separations. The membrane has a high flow rate of material with 100% selectivity. Also provided is a method for producing a catalytic membrane having flow-through pores and discreet catalytic clusters adhering to the inside surfaces of the pores.

Pellin, Michael J; Hryn, John N; Elam, Jeffrey W

2013-08-27T23:59:59.000Z

259

Catalytic Solutions Inc CSI | Open Energy Information  

Open Energy Info (EERE)

Developer of the breakthrough catalytic coating technology and the Mixed Phase Catalyst (MPCTM), and also manufacturer of catalytic converters. References: Catalytic...

260

Advanced High-Temperature, High-Pressure Transport Reactor Gasification  

SciTech Connect

The transport reactor development unit (TRDU) was modified to accommodate oxygen-blown operation in support of a Vision 21-type energy plex that could produce power, chemicals, and fuel. These modifications consisted of changing the loop seal design from a J-leg to an L-valve configuration, thereby increasing the mixing zone length and residence time. In addition, the standpipe, dipleg, and L-valve diameters were increased to reduce slugging caused by bubble formation in the lightly fluidized sections of the solid return legs. A seal pot was added to the bottom of the dipleg so that the level of solids in the standpipe could be operated independently of the dipleg return leg. A separate coal feed nozzle was added that could inject the coal upward into the outlet of the mixing zone, thereby precluding any chance of the fresh coal feed back-mixing into the oxidizing zone of the mixing zone; however, difficulties with this coal feed configuration led to a switch back to the original downward configuration. Instrumentation to measure and control the flow of oxygen and steam to the burner and mix zone ports was added to allow the TRDU to be operated under full oxygen-blown conditions. In total, ten test campaigns have been conducted under enriched-air or full oxygen-blown conditions. During these tests, 1515 hours of coal feed with 660 hours of air-blown gasification and 720 hours of enriched-air or oxygen-blown coal gasification were completed under this particular contract. During these tests, approximately 366 hours of operation with Wyodak, 123 hours with Navajo sub-bituminous coal, 143 hours with Illinois No. 6, 106 hours with SUFCo, 110 hours with Prater Creek, 48 hours with Calumet, and 134 hours with a Pittsburgh No. 8 bituminous coal were completed. In addition, 331 hours of operation on low-rank coals such as North Dakota lignite, Australian brown coal, and a 90:10 wt% mixture of lignite and wood waste were completed. Also included in these test campaigns was 50 hours of gasification on a petroleum coke from the Hunt Oil Refinery and an additional 73 hours of operation on a high-ash coal from India. Data from these tests indicate that while acceptable fuel gas heating value was achieved with these fuels, the transport gasifier performs better on the lower-rank feedstocks because of their higher char reactivity. Comparable carbon conversions have been achieved at similar oxygen/coal ratios for both air-blown and oxygen-blown operation for each fuel; however, carbon conversion was lower for the less reactive feedstocks. While separation of fines from the feed coals is not needed with this technology, some testing has suggested that feedstocks with higher levels of fines have resulted in reduced carbon conversion, presumably due to the inability of the finer carbon particles to be captured by the cyclones. These data show that these low-rank feedstocks provided similar fuel gas heating values; however, even among the high-reactivity low-rank coals, the carbon conversion did appear to be lower for the fuels (brown coal in particular) that contained a significant amount of fines. The fuel gas under oxygen-blown operation has been higher in hydrogen and carbon dioxide concentration since the higher steam injection rate promotes the water-gas shift reaction to produce more CO{sub 2} and H{sub 2} at the expense of the CO and water vapor. However, the high water and CO{sub 2} partial pressures have also significantly reduced the reaction of (Abstract truncated)

Michael L. Swanson

2005-08-30T23:59:59.000Z

Note: This page contains sample records for the topic "injection catalytic gasification" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Analysis of Biomass/Coal Co-Gasification for Integrated Gasification Combined Cycle (IGCC) Systems with Carbon Capture.  

E-Print Network (OSTI)

?? In recent years, Integrated Gasification Combined Cycle Technology (IGCC) has become more common in clean coal power operations with carbon capture and sequestration (CCS).… (more)

Long, Henry A, III

2011-01-01T23:59:59.000Z

262

Co-gasification Reactivity of Coal and Woody Biomass in High-Temperature Gasification  

Science Journals Connector (OSTI)

(20) Although the total pressure was 0.5 MPa and lower than the usual conditions of the gasifier, it has been confirmed that the total pressure has little influence on the gasification rate of char when the partial pressure of the gasifying agent is the same and the total pressure is less than 2 MPa. ... While the pyrolysis and the char gasification were tested separately in the above experiments, raw samples of coals, cedar bark, and the mixtures were gasified with carbon dioxide at high temperature using the PDTF facility in this section, the same as the reductor in the air-blown two-stage entrained flow coal gasifier. ...

Shiro Kajitani; Yan Zhang; Satoshi Umemoto; Masami Ashizawa; Saburo Hara

2009-09-24T23:59:59.000Z

263

Chapter 15 - Catalytic Thermochemical Processes for Biomass Conversion to Biofuels and Chemicals  

Science Journals Connector (OSTI)

Abstract Biomass is the most abundant and biorenewable resource with great potential for sustainable production of chemicals and fuels. Thermochemical conversion technologies (pyrolysis, gasification and hydrothermal liquefaction) are a promising option for transforming biomass feedstocks into liquid oils and chemicals. In the article, for the thermal process of biomass for biofuels and chemicals, the effect of reaction conditions, reactors, solvents and catalysts on the yield and distribution of the products are reviewed. Fast pyrolysis of cellulose is primarily conducted over catalysts with proper acidity/basicity and has undergone many pilot tests. Gasification is typically conducted over supported noble metal catalysts and has been profiled as being CO2-neutral, having a high potential to provide power, chemicals and fuels. Catalytically hydrothermal liquefaction of biomass produces a very complex mixture of liquid products; therefore, novel technology for separation and extraction of downstream products from hydrothermal liquefaction of lignocellulosic biomass need to be developed.

Lin Mei Wu; Chun Hui Zhou; Dong Shen Tong; Wei Hua Yu

2014-01-01T23:59:59.000Z

264

Task 3.9 -- Catalytic tar cracking. Semi-annual report, January 1--June 30, 1995  

SciTech Connect

Tar produced in the gasification of coal is deleterious to the operation of downstream equipment including fuel cells, gas turbines, hot-gas stream cleanup filters, and pressure swing adsorption systems. Catalytic cracking of tars to smaller hydrocarbons can be an effective means to remove these tars from gas streams and, in the process, generate useful products, e.g., methane gas, which is crucial to the operation of molten carbonate fuel cells. The objectives of this project are to investigate whether gasification tars can be cracked by synthetic nickel-substituted micamontmorillonite, zeolite, or dolomite material; and whether the tars can be cracked selectively by these catalysts to produce a desired liquid and/or gas stream. Results to date are presented in the cited papers.

Young, B.C.; Timpe, R.C.

1995-12-31T23:59:59.000Z

265

1 - Gasification and synthetic liquid fuel production: an overview  

Science Journals Connector (OSTI)

Abstract This chapter discusses general considerations on gasification processes and synthetic liquid fuel production. It provides an overview of state-of-the-art gasification technologies, feedstocks and applications in power generation, and synthetic fuels production, together with some recent future trends in the field.

R. Luque; J.G. Speight

2015-01-01T23:59:59.000Z

266

Study on the Nitric Compounds during Coal Gasification  

Science Journals Connector (OSTI)

This investigation involved the formation and evolution of NO? HCN and NH3 during coal gasification. Since HCN and NH3 are the precursors of NOX, their summation are considered to show the characteristics of the precursors in this paper. The experiments ... Keywords: gasification, NOX precursors, particle size, agent

Jun Xiang; Qingsen Zhao; Song Hu; Lushi Sun; Sheng Su; Kai Xu; Tengfei Lu; Gang Chen

2009-10-01T23:59:59.000Z

267

Coal gasification for power generation. 2nd ed.  

SciTech Connect

The report gives an overview of the opportunities for coal gasification in the power generation industry. It provides a concise look at the challenges faced by coal-fired generation, the ability of coal gasification to address these challenges, and the current state of IGCC power generation. Topics covered in the report include: An overview of coal generation including its history, the current market environment, and the status of coal gasification; A description of gasification technology including processes and systems; An analysis of the key business factors that are driving increased interest in coal gasification; An analysis of the barriers that are hindering the implementation of coal gasification projects; A discussion of Integrated Gasification Combined Cycle (IGCC) technology; An evaluation of IGCC versus other generation technologies; A discussion of IGCC project development options; A discussion of the key government initiatives supporting IGCC development; Profiles of the key gasification technology companies participating in the IGCC market; and A description of existing and planned coal IGCC projects.

NONE

2006-10-15T23:59:59.000Z

268

Methods for sequestering carbon dioxide into alcohols via gasification fermentation  

DOE Patents (OSTI)

The present invention is directed to improvements in gasification for use with synthesis gas fermentation. Further, the present invention is directed to improvements in gasification for the production of alcohols from a gaseous substrate containing at least one reducing gas containing at least one microorganism.

Gaddy, James L; Ko, Ching-Whan; Phillips, J. Randy; Slape, M. Sean

2013-11-26T23:59:59.000Z

269

Pyrolysis, combustion and gasification characteristics of miscanthus and sewage sludge  

Science Journals Connector (OSTI)

Abstract The energetic conversion of biomass into syngas is considered as reliable energy source. In this context, biomass (miscanthus) and sewage sludge have been investigated. A simultaneous thermal analyzer and mass spectrometer was used for the characterization of samples and identified the volatiles evolved during the heating of the sample up to 1100 °C under combustion and gasification conditions. The TG and DTA results were discussed in argon, oxygen, steam and steam blended gas atmospheres. Different stages of pyrolysis, combustion and gasification of the samples have been examined. It was shown that the combustion and gasification of char were occurred in two different temperature zones. The DTA–MS profile of the sample gives information on combustion and gasification process of the samples (ignition, peak combustion and burnout temperatures) and gases released (H2, O2, CO and CO2). The results showed that the different processes were mainly dependent on temperature. The evolution of the gas species was consistent with the weight loss of the samples during pyrolysis, combustion and gasification process. The effect of the ambiences during pyrolysis, combustion and gasification of the samples were reported. The appropriate temperature range to the sludge and miscanthus gasification was evaluated. The kinetic parameters of the biomass and sewage sludge were estimated for TGA using two models based on first-order reactions with distributed activation energies. The presence of ash in the biomass char was more influential during the gasification process.

Kandasamy Jayaraman; Iskender Gökalp

2015-01-01T23:59:59.000Z

270

Structural characteristics and gasification reactivity of chars prepared from K{sub 2}CO{sub 3} mixed HyperCoals and coals  

SciTech Connect

HyperCoal is a clean coal with mineral matter content <0.05 wt %. Oaky Creek (C = 82%), and Pasir (C = 68%) coals were subjected to solvent extraction method to prepare Oaky Creek HyperCoal, and Pasir HyperCoal. Experiments were carried out to compare the gasification reactivity of HyperCoals and parent raw coals with 20, 40, 50 and 60% K{sub 2}CO{sub 3} as a catalyst at 600, 650, 700, and 775{sup o}C with steam. Gasification rates of coals and HyperCoals were strongly influenced by the temperature and catalyst loading. Catalytic steam gasification of HyperCoal chars was found to be chemical reaction controlled in the 600-700{sup o}C temperature range for all catalyst loadings. Gasification rates of HyperCoal chars were found to be always higher than parent coals at any given temperature for all catalyst loadings. However, X-ray diffraction results showed that the microstructures of chars prepared from coals and HyperCoals were similar. Results from nuclear magnetic resonance spectroscopy show no significant difference between the chemical compositions of the chars. Significant differences were observed from scanning electron microscopy images, which showed that the chars from HyperCoals had coral-reef like structures whereas dense chars were observed for coals. 26 refs., 8 figs., 2 tabs.

Atul Sharma; Hiroyuki Kawashima; Ikuo Saito; Toshimasa Takanohashi [National Institute of Advanced Industrial Science and Technology, Ibaraki (Japan). Advanced Fuel Group

2009-04-15T23:59:59.000Z

271

Gasification of an Indonesian subbituminous coal in a pilot-scale coal gasification system  

Science Journals Connector (OSTI)

Indonesian Roto Middle subbituminous coal was gasified in a pilot-scale dry-feeding gasification system and the produced syngas was purified...2, and 5–8% CO2. Particulates in syngas were 99.8% removed by metal f...

Yongseung Yun; Seok Woo Chung

2007-07-01T23:59:59.000Z

272

Wabash River Coal Gasification Repowering Project Final Technical Report  

Office of Scientific and Technical Information (OSTI)

Wabash River Coal Gasification Wabash River Coal Gasification Repowering Project Final Technical Report August 2000 Work Performed Under Cooperative Agreement DE-FC21-92MC29310 For: The U.S. Department of Energy Office of Fossil Energy National Energy Technology Laboratory Morgantown, West Virginia Prepared by: The Men and Women of Wabash River Energy Ltd. For Further Information Contact: Roy A. Dowd, CHMM Environmental Supervisor Wabash River Coal Gasification Repowering Project 444 West Sandford Avenue West Terre Haute, IN 47885 LEGAL NOTICE/DISCLAIMER This report was prepared by the Wabash River Coal Gasification Repowering Project Joint Venture pursuant to a Cooperative Agreement partially funded by the U.S. Department of Energy, and neither the Wabash River Coal Gasification Repowering

273

A Texas project illustrates the benefits of integrated gasification  

SciTech Connect

Gasification can be an attractive option for converting a variety of petroleum feedstocks to chemicals. Natural gas is commonly sued to produce acetic acid, isocyanates, plastics, and fibers. But low-cost, bottom-of-the-barrel feeds, such as vacuum resid, petroleum coke, and asphaltenes, also can be used. In any case, gasification products include synthesis gas, carbon monoxide, hydrogen, steam, carbon dioxide, and power. The more a gasification facility is integrated with utilities and other non-core operations of a production complex, the more economical the products are for all consumers. The paper discusses gasification of natural gas, light hydrocarbons (ethane, propanes, and butanes), and heavy hydrocarbons (distillates, heavy residues, asphalts, coals, petroleum coke). The paper then describes a Texas City Gasification Project, which gasifies methane to produce carbon monoxide, hydrogen, and alcohol. The plant is integrated with a cogeneration plant. Economics are discussed.

Philcox, J. [Praxair Inc., Houston, TX (United States); Fenner, G.W. [Praxair Inc., Tonawanda, NY (United States)

1997-07-14T23:59:59.000Z

274

Integration Strategy of Gasification Technology:? A Gateway to Future Refining  

Science Journals Connector (OSTI)

The historical evidence of the operation of a coal gasification plant goes as far back in time as 1878.1 The United State's first power plant based on coal gasification technology was installed in 1980.2 The concept of gasification has begun to attract much attention from the refining industry because of stringent environmental regulations on transportation fuel, slashing demands for fuel oils, and uncertainty in the availability of good crude oils. ... Therefore, it is a challenging task for refining industries to economically integrate gasification technology, and this is the major theme of the paper. ... Gasification is superior to many of the available power production and waste disposal technologies by addressing various issues together regarding environmental emissions, maintaining quality of refining products, and waste management. ...

Jhuma Sadhukhan; X. X. Zhu

2002-02-09T23:59:59.000Z

275

Energy and environmental research emphasizing low-rank coal: Task 3.9 catalytic tar cracking  

SciTech Connect

Tar produced in the gasification of coal is deleterious to the operation of downstream equipment, including fuel cells, gas turbines, hot-gas stream cleanup filters, and pressure-swing absorption systems. Catalytic cracking of tars to smaller hydrocarbons can be an effective means of removing these tars from gas streams and, in the process, generating useful products, such as methane gas, which is crucial to operation of molten carbonate fuel cells. Aerosol tars are not readily removed from gas streams by conventional means and, as a consequence, often end up plugging filters or fouling fuel cells, turbines, or sorbents. Catalytic cracking of these tars to molecular moieties of C{sub 10} or smaller would prevent the problems commonly attributed to the tars. As an example, the moving Bourdon fixed-bed gasifier, by virtue of its efficient countercurrent heat exchange and widespread commercial use, may offer the lowest-cost integrated gasification combined-cycle (IGCC) system if tar generation and wastewater contamination can be minimized. We evaluate the potential of selected catalysts to minimize tar accumulation and maximize char conversion to useful liquid and/or gaseous products. Owing to the potential for production of extremely toxic nickel carbonyl gas, care must be exercised in the use of a NISMM catalyst for cracking tars at high temperatures in reducing atmospheres such as those produced by coal gasification. We observed a fifty percent or more of tar produced during steam gasification of Beulah lignite at temperatures of 400{degrees}-800+{degrees}C when cracked by either dolomite or zeolite maintained at a temperature of 50{degrees}C-100{degrees}C below that of the reactor.

Timpe, R.C.

1995-09-01T23:59:59.000Z

276

Hybrid Combustion-Gasification Chemical Looping  

SciTech Connect

For the past several years Alstom Power Inc. (Alstom), a leading world-wide power system manufacturer and supplier, has been in the initial stages of developing an entirely new, ultra-clean, low cost, high efficiency power plant for the global power market. This new power plant concept is based on a hybrid combustion-gasification process utilizing high temperature chemical and thermal looping technology The process consists of the oxidation, reduction, carbonation, and calcination of calcium-based compounds, which chemically react with coal, biomass, or opportunity fuels in two chemical loops and one thermal loop. The chemical and thermal looping technology can be alternatively configured as (i) a combustion-based steam power plant with CO{sub 2} capture, (ii) a hybrid combustion-gasification process producing a syngas for gas turbines or fuel cells, or (iii) an integrated hybrid combustion-gasification process producing hydrogen for gas turbines, fuel cells or other hydrogen based applications while also producing a separate stream of CO{sub 2} for use or sequestration. In its most advanced configuration, this new concept offers the promise to become the technology link from today's Rankine cycle steam power plants to tomorrow's advanced energy plants. The objective of this work is to develop and verify the high temperature chemical and thermal looping process concept at a small-scale pilot facility in order to enable AL to design, construct and demonstrate a pre-commercial, prototype version of this advanced system. In support of this objective, Alstom and DOE started a multi-year program, under this contract. Before the contract started, in a preliminary phase (Phase 0) Alstom funded and built the required small-scale pilot facility (Process Development Unit, PDU) at its Power Plant Laboratories in Windsor, Connecticut. Construction was completed in calendar year 2003. The objective for Phase I was to develop the indirect combustion loop with CO{sub 2} separation, and also syngas production from coal with the calcium sulfide (CaS)/calcium sulfate (CaSO{sub 4}) loop utilizing the PDU facility. The results of Phase I were reported in Reference 1, 'Hybrid Combustion-Gasification Chemical Looping Coal Power Development Technology Development Phase I Report' The objective for Phase II was to develop the carbonate loop--lime (CaO)/calcium carbonate (CaCO{sub 3}) loop, integrate it with the gasification loop from Phase I, and ultimately demonstrate the feasibility of hydrogen production from the combined loops. The results of this program were reported in Reference 3, 'Hybrid Combustion-Gasification Chemical Looping Coal Power Development Technology Development Phase II Report'. The objective of Phase III is to operate the pilot plant to obtain enough engineering information to design a prototype of the commercial Chemical Looping concept. The activities include modifications to the Phase II Chemical Looping PDU, solids transportation studies, control and instrumentation studies and additional cold flow modeling. The deliverable is a report making recommendations for preliminary design guidelines for the prototype plant, results from the pilot plant testing and an update of the commercial plant economic estimates.

Herbert Andrus; Gregory Burns; John Chiu; Gregory Lijedahl; Peter Stromberg; Paul Thibeault

2009-01-07T23:59:59.000Z

277

Method and apparatus for monitoring a hydrocarbon-selective catalytic reduction device  

DOE Patents (OSTI)

A method for monitoring a hydrocarbon-selective catalytic reactor device of an exhaust aftertreatment system of an internal combustion engine operating lean of stoichiometry includes injecting a reductant into an exhaust gas feedstream upstream of the hydrocarbon-selective catalytic reactor device at a predetermined mass flowrate of the reductant, and determining a space velocity associated with a predetermined forward portion of the hydrocarbon-selective catalytic reactor device. When the space velocity exceeds a predetermined threshold space velocity, a temperature differential across the predetermined forward portion of the hydrocarbon-selective catalytic reactor device is determined, and a threshold temperature as a function of the space velocity and the mass flowrate of the reductant is determined. If the temperature differential across the predetermined forward portion of the hydrocarbon-selective catalytic reactor device is below the threshold temperature, operation of the engine is controlled to regenerate the hydrocarbon-selective catalytic reactor device.

Schmieg, Steven J; Viola, Michael B; Cheng, Shi-Wai S; Mulawa, Patricia A; Hilden, David L; Sloane, Thompson M; Lee, Jong H

2014-05-06T23:59:59.000Z

278

Multi-stage biomass gasification in Internally Circulating Fluidized-bed Gasifier (ICFG): Test operation of animal-waste-derived biomass and parametric investigation at low temperature  

Science Journals Connector (OSTI)

In this study, the design, construction and operation of an Internally Circulating Fluidized-bed Gasifier (ICFG) are introduced in detail. ICFG design provides a multi-stage gasification process, with bed material acting as the medium for char combustion and heat exchange by its internal circulation. And it is used for the steam gasification of animal waste at low temperature in view of producing fuel gas. The effects of pressure balance, pyrolysis temperature, catalytic temperature and steam/feedstock ratio on the gasifier performance (e.g. product gas yield, gas composition, tar content) are also discussed. Hydrogen-rich and low-tar product gas can be produced from the low-calorific feedstock, in the properly designed process together with high-performance catalyst.

Xianbin Xiao; Duc Dung Le; Kayoko Morishita; Shouyu Zhang; Liuyun Li; Takayuki Takarada

2010-01-01T23:59:59.000Z

279

CSD: Research: Catalytic Science  

NLE Websites -- All DOE Office Websites (Extended Search)

Catalytic Science Catalytic Science The DOE Chemical Energy program supports basic research in the area of chemical transformations or conversions which are fundamental to new or existing concepts of energy production and storage. A further goal of the program is to identify and develop environmentally benign approaches to the synthesis of chemicals via routes requiring a minimal consumption of energy. These objectives lead naturally to an emphasis on catalysis. Novel homogeneous and heterogeneous catalysts are constantly being sought to enable the synthesis of desired products from nontraditional reactants, often with the aim of minimizing the production of toxic intermediates or byproducts, or to enable the more efficient production of products via existing reaction pathways. To this end, efforts are undertaken to

280

Chemical kinetics parameters of nuclear graphite gasification  

Science Journals Connector (OSTI)

This paper provides chemical kinetics parameters for the gasification of nuclear graphite grades of IG-110, IG-430, NBG-18 and NBG-25 and presents empirical correlations for their surface areas of free active sites as a function of mass. The kinetics parameters for the four elementary chemical reactions of gasification of these grades of nuclear graphite include the values and Gaussian distributions of the specific activation energies and the values of the pre-exponential rate coefficients for the adsorption of oxygen and desorption of CO and CO2 gases. The values of these parameters and the surface area of free active sites for IG-110 and NB-25, with fine and medium petroleum coke filler particles, are nearly the same, but slightly different from those of NBG-18 and IG-430, with medium and fine coal tar pitch coke filler particles. Recommended parameters are applicable to future safety analysis of high and very high temperature gas cooled reactors in the unlikely event of a massive air ingress accident.

Mohamed S. El-Genk; Jean-Michel P. Tournier

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "injection catalytic gasification" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Site clean up of coal gasification residues  

SciTech Connect

The coal gasification plant residues tested in this research consists of various particle sizes of rock, gravel, tar-sand agglomerates, fine sand and soil. Most of the soils particles were tar free. One of the fractions examined contained over 3000 ppM polyaromatic hydrocarbons (PAHs). The residues were subjected to high pressure water jet washing, float and sink tests, and soil washing. Subsequent PAH analyses found less than 1 ppM PAHs in the water jet washing water. Soils washed with pure water lowered PAH concentrations to 276 ppM; the use of surfactants decreased PAHs to 47, 200, and 240 ppM for different test conditions. In the 47 ppM test, the surfactant temperature had been increased to 80 C, suggesting that surfactant washing efficiency can be greatly improved by increasing the solution temperature. The coal tar particles were not extracted by the surfactants used. Coke and tar-sand agglomerates collected from the float and sink gravimetric separation were tested for heating value. The tar exhibited a very high heating value, while the coke had a heating value close to that of bituminous coal. These processes are believed to have the potential to clean up coal gasification plant residues at a fairly low cost, pending pilot-scale testing and a feasibility study.

Wilson, J.W.; Ding, Y. [Univ. of Missouri, Rolla, MO (United States)

1995-12-31T23:59:59.000Z

282

Experimental and Thermo-Economic Analysis of Catalytic Gasification and Fuel Cell Power Systems.  

E-Print Network (OSTI)

??This dissertation presents a comprehensive experimental and thermo-economic evaluation of coal gasifiers with in-situ carbon capture for generating high-hydrogen and high-methane content syngas for solid… (more)

Siefert, Nicholas S.

2013-01-01T23:59:59.000Z

283

Plasma gasification of waste as a method of energy saving  

Science Journals Connector (OSTI)

Several versions of the organizations of the process of plasma-chemical gasification with the use of air, carbon dioxide, steam and their mixtures as the plasma-forming gas are considered in the presentation. The results of the calculation-theoretical evaluations of the quality of synthesis gas and efficiency of gasification, and also the results of experiments on plasma gasification of wood waste carried out on the experimental IEE RAS test-bench are given. The results of calculations are compared with experimental data.

V E Popov; A N Bratsev; V A Kuznetsov; S V Shtengel; A A Ufimtsev

2011-01-01T23:59:59.000Z

284

Chapter 4 - Obstacles to Implementation of Black Liquor Gasification  

Science Journals Connector (OSTI)

Obstacles hindering the commercialization of black liquor gasification are discussed. The most important of them include financial risks, protection of the gasifier, increase in the causticizing demand, tar condensation, hot gas cleanup, and steam deficit. Gasification system demands significant capital investment. The high temperature and pressure and the alkaline conditions create aggressive environment. Protection from an aggressive environment is very important in the operation of a gasifier because it determines the lifetime and hence the feasibility of gasification as a technology as a whole.

Pratima Bajpai

2014-01-01T23:59:59.000Z

285

EIS-0431: Hydrogen Energy California's Integrated Gasification Combined  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

1: Hydrogen Energy California's Integrated Gasification 1: Hydrogen Energy California's Integrated Gasification Combined Cycle and Carbon Capture and Sequestration Project, California EIS-0431: Hydrogen Energy California's Integrated Gasification Combined Cycle and Carbon Capture and Sequestration Project, California Summary This EIS evaluates the potential environmental impacts of a proposal to provide financial assistance for the construction and operation of Hydrogen Energy California LLC (HECA's) project, which would produce and sell electricity, carbon dioxide and fertilizer. DOE selected this project for an award of financial assistance through a competitive process under the Clean Coal Power Initiative program. Public Comment Opportunities None available at this time. Documents Available for Download September 5, 2013

286

Catalytic distillation : design and application of a catalytic distillation column.  

E-Print Network (OSTI)

??Catalytic Distillation (CD) is a hybrid technology that utilizes the dynamics of si- multaneous reaction and separation in a single process unit to achieve a… (more)

Nieuwoudt, Josias Jakobus (Jako)

2005-01-01T23:59:59.000Z

287

Test results of a catalytic combustor for a gas turbine  

Science Journals Connector (OSTI)

A catalytically assisted low \\{NOx\\} combustor has been developed which has the advantage of catalyst durability. Combustion characteristics of catalysts at high pressure were investigated using a bench scale reactor and an improved catalyst was selected. A combustor for multi-can type gas turbine of 10 MW class was designed and tested at high-pressure conditions using liquefied natural gas (LNG) fuel. This combustor is composed of a burner system and a premixed combustion zone in a ceramic type liner. The burner system consists of catalytic combustor segments and premixing nozzles. Catalyst bed temperature is controlled under 1000°C, premixed gas is injected from the premixing nozzles to catalytic combustion gas and lean premixed combustion is carried out in the premixed combustion zone. As a result of the combustion tests, \\{NOx\\} emission was lower than 5 ppm converted at 16% O2 at a combustor outlet temperature of 1350°C and a combustor inlet pressure of 1.33 MPa.

Y Ozawa; T Fujii; Y Tochihara; T Kanazawa; K Sagimori

1998-01-01T23:59:59.000Z

288

Carbon formation and metal dusting in advanced coal gasification processes  

SciTech Connect

The product gases generated by coal gasification systems contain high concentrations of CO and, characteristically, have relatively high carbon activities. Accordingly, carbon deposition and metal dusting can potentially degrade the operation of such gasifier systems. Therefore, the product gas compositions of eight representative gasifier systems were examined with respect to the carbon activity of the gases at temperatures ranging from 480 to 1,090 C. Phase stability calculations indicated that Fe{sub 3}C is stable only under very limited thermodynamic conditions and with certain kinetic assumptions and that FeO and Fe{sub 0.877}S tend to form instead of the carbide. As formation of Fe{sub 3}C is a necessary step in the metal dusting of steels, there are numerous gasifier environments where this type of carbon-related degradation will not occur, particularly under conditions associated with higher oxygen and sulfur activities. These calculations also indicated that the removal of H{sub 2}S by a hot-gas cleanup system may have less effect on the formation of Fe{sub 3}C in air-blown gasifier environments, where the iron oxide phase can exist and is unaffected by the removal of sulfur, than in oxygen-blown systems, where iron sulfide provides the only potential barrier to Fe{sub 3}C formation. Use of carbon- and/or low-alloy steels dictates that the process gas composition be such that Fe{sub 3}C cannot form if the potential for metal dusting is to be eliminated. Alternatively, process modifications could include the reintroduction of hydrogen sulfide, cooling the gas to perhaps as low as 400 C and/or steam injection. If higher-alloy steels are used, a hydrogen sulfide-free gas may be processed without concern about carbon deposition and metal dusting.

DeVan, J.H.; Tortorelli, P.F.; Judkins, R.R.; Wright, I.G.

1997-02-01T23:59:59.000Z

289

Cumene by Catalytic Distillation  

SciTech Connect

The novel concept of Catalytic Distillation has been commercialized in the CRandL MTBE process, in which combined reaction and distillation provide energy savings over conventional processes. This concept has now been extended to production of cumene from benzene and propylene. In this case the advantages of the technique are not only energy savings but significant reductions in by-product losses and capital requirements. In this paper the development of the process is discussed and the economics of commercial operation are presented.

Jones, E.M.; Mawer, J.

1986-01-01T23:59:59.000Z

290

DOE Hydrogen Analysis Repository: Gasification-Based Fuels and Electricity  

NLE Websites -- All DOE Office Websites (Extended Search)

Gasification-Based Fuels and Electricity Production from Biomass Gasification-Based Fuels and Electricity Production from Biomass Project Summary Full Title: Gasification-Based Fuels and Electricity Production from Biomass, without and with Carbon Capture and Storage Project ID: 226 Principal Investigator: Eric D. Larson Keywords: Biomass; Fischer Tropsch; hydrogen Purpose Develop and analyze process designs for gasification-based thermochemical conversion of switchgrass into Fischer-Tropsch (F-T) fuels, dimethyl ether (DME), and hydrogen. All process designs will have some level of co-production of electricity, and some will include capture of byproduct CO2 for underground storage. Performer Principal Investigator: Eric D. Larson Organization: Princeton University Telephone: 609-258-4966 Email: elarson@princeton.edu

291

Hybrid Combustion-Gasification Chemical Looping Coal Power Technology Development  

NLE Websites -- All DOE Office Websites (Extended Search)

Gasification Gasification Technologies contacts Gary J. stiegel Gasification Technology Manager National Energy Technology Laboratory 626 Cochrans Mill Road P.O. Box 10940 Pittsburgh, PA 15236 412-386-4499 gary.stiegel@netl.doe.gov Ronald Breault Project Manager National Energy Technology Laboratory 3610 Collins Ferry Road P.O. Box 880 Morgantown, WV 26507 304-285-4486 ronald.breault@netl.doe.gov Herbert E. andrus, Jr. Principal Investigator ALSTOM Power 2000 Day Hill Rd. Windsor, CT 06095 860-285-4770 herbert.e.andrus@power.alstom.com Hybrid Combustion-GasifiCation CHemiCal loopinG Coal power teCHnoloGy development Description Gasification technologies can provide a stable, affordable energy supply for the nation, while also providing high efficiencies and near zero pollutants. With coal

292

Gasification of waste rigid polyurethane foam: optimizing operational conditions  

Science Journals Connector (OSTI)

The influence of temperature and catalyst type on production of combustible gas during the air gasification of waste rigid polyurethane foam has been...16 (43...) of three parameters was employed to optimize the...

Xiaoya Guo; Lixin Wang; Shouguang Li…

2014-07-01T23:59:59.000Z

293

Demonstration of Black Liquor Gasification at Big Island  

SciTech Connect

This Final Technical Report provides an account of the project for the demonstration of Black Liquor Gasification at Georgia-Pacific LLC's Big Island, VA facility. This report covers the period from May 5, 2000 through November 30, 2006.

Robert DeCarrera

2007-04-14T23:59:59.000Z

294

Underground coal gasification: a brief review of current status  

SciTech Connect

Coal gasification is a promising option for the future use of coal. Similarly to gasification in industrial reactors, underground coal gasification (UCG) produces syngas, which can be used for power generation or for the production of liquid hydrocarbon fuels and other valuable chemical products. As compared with conventional mining and surface gasification, UCG promises lower capital/operating costs and also has other advantages, such as no human labor underground. In addition, UCG has the potential to be linked with carbon capture and sequestration. The increasing demand for energy, depletion of oil and gas resources, and threat of global climate change lead to growing interest in UCG throughout the world. In this article, we review the current status of this technology, focusing on recent developments in various countries.

Shafirovich, E.; Varma, A. [Purdue University, West Lafayette, IN (United States). School of Chemical Engineering

2009-09-15T23:59:59.000Z

295

Biomass Gasification for Electricity and Fuels , Large Scale  

Science Journals Connector (OSTI)

It is commonly agreed that gasification of biomass has a large potential for a more sustainable energy system in the future. However, a lot of research and demonstration efforts have been carried out during t...

Dr. Hermann Hofbauer

2012-01-01T23:59:59.000Z

296

Biomass Gasification for Electricity and Fuels , Large Scale  

Science Journals Connector (OSTI)

It is commonly agreed that gasification of biomass has a large potential for a more sustainable energy system in the future. However, a lot of research and demonstration efforts have been carried out during t...

Dr. Hermann Hofbauer

2013-01-01T23:59:59.000Z

297

Thermodynamic Analysis of the Supercritical Water Gasification of Biomass  

Science Journals Connector (OSTI)

The focus here is on biomass-water reacting system. The reaction process (gasification) is aimed at producing a syngas rich in combustible species, such as H2, CH4 and CO. According to the syngas final use (burner

Luca Fiori; Daniele Castello

2014-01-01T23:59:59.000Z

298

Gasification characteristics and kinetics for an eastern oil shale  

SciTech Connect

Gasification tests of Indiana New Albany oil shale fines have been conducted. Thermobalance test results indicate that over 95% of the organic carbon in the shale can be gasified at 1700{degree}F and 135 psig with 30 minutes residence time under a synthesis gas atmosphere and at 1800{degree}F and 15 psig with 30 minutes residence time under a hydrogen/steam atmosphere. A simple kinetic expression for hydrogen/steam gasification weight loss has been developed. Weight loss has been described as the sum of the weight loss from two independent, simultaneous reaction paths: a rapid (<2 minutes) first order reaction and a slower gasification reaction that can be expressed in terms of the steam/carbon reaction. Work is in progress to study the gasification of other Eastern shales and improve the kinetic description of weight loss.

Lau, F.S.; Rue, D.M.; Punwani, D.V.; Rex, R.C. Jr.

1987-04-01T23:59:59.000Z

299

Storing Syngas Lowers the Carbon Price for Profitable Coal Gasification  

Science Journals Connector (OSTI)

There are currently eight gasification facilities operating worldwide producing about 1.7 GW of electricity from coal or petcoke feedstock (10), and in all of these facilities, the syngas is used immediately after it is produced. ...

Adam Newcomer; Jay Apt

2007-10-17T23:59:59.000Z

300

The suitability of coal gasification in India's energy sector  

E-Print Network (OSTI)

Integrated Gasification Combined Cycle (IGCC), an advanced coal-based power generation technology, may be an important technology to help India meet its future power needs. It has the potential to provide higher generating ...

Simpson, Lori Allison

2006-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "injection catalytic gasification" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Materials Challenges for Advanced Combustion and Gasification Fossil Energy Systems  

Science Journals Connector (OSTI)

Through gasification, carbonaceous feedstock such as coal, petroleum coke (petcoke), and biomass is converted into synthesis...12–18] through, e.g., combustion or electrochemical conversion in fuel cells. Syngas ...

S. Sridhar; P. Rozzelle; B. Morreale…

2011-04-01T23:59:59.000Z

302

Gasification and combustion modeling for porous char particles  

E-Print Network (OSTI)

Gasification and combustion of porous char particles occurs in many industrial applications. Reactor-scale outputs of importance depend critically on processes that occur at the particle-scale. Because char particles often ...

Singer, Simcha Lev

2012-01-01T23:59:59.000Z

303

Hydrogen Production Cost Estimate Using Biomass Gasification: Independent Review  

Energy.gov (U.S. Department of Energy (DOE))

This independent review report assesses the 2009 state-of-the-art and 2020 projected capital cost, energy efficiency, and levelized cost for hydrogen production from biomass via gasification.

304

Wood Gasification: Where It's At, Where It's Going  

E-Print Network (OSTI)

This paper discusses the principles and practice of various designs of biomass/wood gasifiers. In general, the basic principle of gasification is reviewed. A look at existing gasifier schemes, including packed bed updraft, downdraft, and fluidized...

Murphy, M. L.

1981-01-01T23:59:59.000Z

305

Modeling, Optimization and Economic Evaluation of Residual Biomass Gasification  

E-Print Network (OSTI)

Gasification is a thermo-chemical process which transforms biomass into valuable synthesis gas. Integrated with a biorefinery it can address the facility’s residue handling challenges and input demands. A number of feedstock, technology, oxidizer...

Georgeson, Adam

2012-02-14T23:59:59.000Z

306

Simulation of biomass gasification in a dual fluidized bed gasifier  

Science Journals Connector (OSTI)

Biomass gasification with steam in a dual-fluidized bed gasifier (DFBG) was simulated with ASPEN Plus. ... that the content of char transferred from the gasifier to the combustor decreases from 22.5...2 concentra...

Jie He; Kristina Göransson; Ulf Söderlind…

2012-03-01T23:59:59.000Z

307

Downdraft Gasification Of Various Biomass Feedstocks For Energy Production.  

E-Print Network (OSTI)

?? Gasification of biomass for energy production has the potential to be a cost effective and environmentally sustainable technology. Small scale, 20-250 kWth, downdraft gasifiers… (more)

Roesch, Hans Patric

2011-01-01T23:59:59.000Z

308

Avestar® - Integrated Gasification Combined Cycle (IGCC) Dynamic Simulator  

NLE Websites -- All DOE Office Websites (Extended Search)

Integrated Gasification Combined Cycle (IGCC) Dynamic Simulator Integrated Gasification Combined Cycle (IGCC) Dynamic Simulator The AVESTAR® center offers courses using the Integrated Gasification Combined Cycle (IGCC) Dynamic Simulator. The IGCC simulator builds on and reaches beyond existing combined-cycle and conventional-coal power plant simulators to combine--for the first time--a Gasification with CO2 Capture process simulator with a Combined-Cycle power simulator together in a single dynamic simulation framework. The AVESTAR® center IGCC courses provide unique, comprehensive training on all aspects of an IGCC plant, illustrating the high-efficiency aspects of the gasifier, gas turbine, and steam turbine integration. IGCC Operator training station HMI display for overview of IGCC Plant - Train A Reference:

309

NETL: Gasification - Development of Ion-Transport Membrane Oxygen  

NLE Websites -- All DOE Office Websites (Extended Search)

Presentations, Papers, and Publications Presentations, Papers, and Publications ITM Oxygen Development for Advanced Oxygen Supply (Oct 2011) Ted Foster, Air Products & Chemicals, Inc. presented at the Gasification Technologies Conference, San Francisco, CA Oct 9-12, 2011. ASU/IGCC Integration Strategies (Oct 2009), David McCarthy, Air Products & Chemicals, Inc., 2009 Gasification Technologies Conference, Colorado Springs, CO. ITM Oxygen: Taking the Next Step (Oct 2009), VanEric Stein, Air Products & Chemicals, Inc., 2009 Gasification Technologies Conference, Colorado Springs, CO. ITM Oxygen: Scaling Up a Low-Cost Oxygen Supply Technology (Oct 2006) Philip Armstrong, Air Products & Chemicals, Inc., 2006 Gasification Technologies Conference, Washington, D.C. ITM Oxygen: The New Oxygen Supply for the New IGCC Market (Oct 2005)

310

NETL: Gasification - Systems and Industry Analyses  

NLE Websites -- All DOE Office Websites (Extended Search)

E&P Technologies Gas Hydrates T&D and Refining Contacts E&P Technologies Gas Hydrates T&D and Refining Contacts Coal & Power Systems Major Demonstrations Innovations for Existing Plants Gasification Turbines Fuel Cells FutureGen Advanced Research Contacts Industrial Capture & Storage Carbon Sequestration Program Overview Core R&D Infrastructure Global Collaborations FAQs Reference Shelf Contacts Hydrogen & Clean Fuels Hydrogen-from-Coal RD&D Contacts ENERGY ANALYSIS About Us Search Products Contacts SMART GRID ANALYSIS BASELINE STUDIES NETL-RUA About NETL-RUA Research Technology Transfer Business Development Education News & Events Contacts Members Only Access TECHNOLOGY TRANSFER Available Technologies How to Partner Outreach Contacts SOLICITATIONS & BUSINESS Solicitations & Funding Opps. Related Links & Forms CDP/Financial Asst. Resources Unsolicited Proposals Available NETL Property Business Alert Notification IRS Tax Credit Program NETL Business Contacts

311

Heat exchanger for coal gasification process  

DOE Patents (OSTI)

This invention provides a heat exchanger, particularly useful for systems requiring cooling of hot particulate solids, such as the separated fines from the product gas of a carbonaceous material gasification system. The invention allows effective cooling of a hot particulate in a particle stream (made up of hot particulate and a gas), using gravity as the motive source of the hot particulate. In a preferred form, the invention substitutes a tube structure for the single wall tube of a heat exchanger. The tube structure comprises a tube with a core disposed within, forming a cavity between the tube and the core, and vanes in the cavity which form a flow path through which the hot particulate falls. The outside of the tube is in contact with the cooling fluid of the heat exchanger.

Blasiole, George A. (Greensburg, PA)

1984-06-19T23:59:59.000Z

312

Biomass Gasification Research Facility Final Report  

SciTech Connect

While thermochemical syngas production facilities for biomass utilization are already employed worldwide, exploitation of their potential has been inhibited by technical limitations encountered when attempting to obtain real-time syngas compositional data required for process optimization, reliability, and syngas quality assurance. To address these limitations, the Gas Technology Institute (GTI) carried out two companion projects (under US DOE Cooperative Agreements DE-FC36-03GO13175 and DE-FC36-02GO12024) to develop and demonstrate the equipment and methods required to reliably and continuously obtain accurate and representative on-line syngas compositional data. These objectives were proven through a stepwise series of field tests of biomass and coal gasification process streams. GTI developed the methods and hardware for extractive syngas sample stream delivery and distribution, necessary to make use of state-of-the-art on-line analyzers to evaluate and optimize syngas cleanup and conditioning. This multi-year effort to develop methods to effectively monitor gaseous species produced in thermochemical process streams resulted in a sampling and analysis approach that is continuous, sensitive, comprehensive, accurate, reliable, economical, and safe. The improved approach for sampling thermochemical processes that GTI developed and demonstrated in its series of field demonstrations successfully provides continuous transport of vapor-phase syngas streams extracted from the main gasification process stream to multiple, commercially available analyzers. The syngas stream is carefully managed through multiple steps to successfully convey it to the analyzers, while at the same time bringing the stream to temperature and pressure conditions that are compatible with the analyzers. The primary principle that guides the sample transport is that throughout the entire sampling train, the temperature of the syngas stream is maintained above the maximum condensation temperature of the vapor phase components of the conveyed sample gas. In addition, to minimize adsorption or chemical changes in the syngas components prior to analysis, the temperature of the transported stream is maintained as hot as is practical, while still being cooled only as much necessary prior to entering the analyzer(s). The successful transport of the sample gas stream to the analyzer(s) is accomplished through the managed combination of four basic gas conditioning methods that are applied as specifically called for by the process conditions, the gas constituent concentrations, the analyzer requirements, and the objectives of the syngas analyses: 1) removing entrained particulate matter from the sample stream; 2) maintaining the temperature of the sample gas stream; 3) lowering the pressure of the sample gas stream to decrease the vapor pressures of all the component vapor species in the sample stream; and 4) diluting the gas stream with a metered, inert gas, such as nitrogen. Proof-of-concept field demonstrations of the sampling approach were conducted for gasification process streams from a black liquor gasifier, and from the gasification of biomass and coal feedstocks at GTI’s Flex-Fuel Test Facility. In addition to the descriptions and data included in this Final Report, GTI produced a Special Topical Report, Design and Protocol for Monitoring Gaseous Species in Thermochemical Processes, that explains and describes in detail the objectives, principles, design, hardware, installation, operation and representative data produced during this successful developmental effort. Although the specific analyzers used under Cooperative Agreement DE-FC36-02GO12024 were referenced in the Topical Report and this Final Report, the sampling interface design they present is generic enough to adapt to other analyzers that may be more appropriate to alternate process streams or facilities.

Snyder, Todd R.; Bush, Vann; Felix, Larry G.; Farthing, William E.; Irvin, James H.

2007-09-30T23:59:59.000Z

313

Coal Integrated Gasification Fuel Cell System Study  

SciTech Connect

This study analyzes the performance and economics of power generation systems based on Solid Oxide Fuel Cell (SOFC) technology and fueled by gasified coal. System concepts that integrate a coal gasifier with a SOFC, a gas turbine, and a steam turbine were developed and analyzed for plant sizes in excess of 200 MW. Two alternative integration configurations were selected with projected system efficiency of over 53% on a HHV basis, or about 10 percentage points higher than that of the state-of-the-art Integrated Gasification Combined Cycle (IGCC) systems. The initial cost of both selected configurations was found to be comparable with the IGCC system costs at approximately $1700/kW. An absorption-based CO2 isolation scheme was developed, and its penalty on the system performance and cost was estimated to be less approximately 2.7% and $370/kW. Technology gaps and required engineering development efforts were identified and evaluated.

Chellappa Balan; Debashis Dey; Sukru-Alper Eker; Max Peter; Pavel Sokolov; Greg Wotzak

2004-01-31T23:59:59.000Z

314

NETL: Gasification Systems - Conversion and Fouling  

NLE Websites -- All DOE Office Websites (Extended Search)

Conversion and Fouling Conversion and Fouling NETL Office of Research and Development Project Number: FWP-2012.03.03 Task 3 Project Description The objective for this NETL in-house conversion and fouling project is to improve the reliability, availability and maintainability (RAM) of gasification plants by providing tools that can be used to evaluate the impact that fuel properties have on slag and refractory interaction, and to reduce plugging and fouling throughout the syngas cooling system. Utilizing these tools will aid in minimizing plugging and fouling-increasing overall plant efficiency due to improved heat transfer in heat exchangers. Particle deposition experimental schematic Particle deposition experimental schematic (click to enlarge) Project Details Program Background and Project Benefits

315

Steam gasification of various feedstocks at a dual fluidised bed gasifier: Impacts of operation conditions and bed materials  

Science Journals Connector (OSTI)

Gasification of biomass is an attractive technology for...2, CO, CO2 and CH4. The DFB steam gasification process has been developed at Vienna University ... fuel moisture content, steam/fuel ratio and gasification

Christoph Pfeifer; Stefan Koppatz; Hermann Hofbauer

2011-03-01T23:59:59.000Z

316

Advanced Gasification Mercury/Trace Metal Control With Monolith Traps  

NLE Websites -- All DOE Office Websites (Extended Search)

Gasification Technologies Gasification Technologies CONTACTS Jenny Tennant Technology/Project Manager National Energy Technology Laboratory 3610 Collins Ferry Road P.O. Box 880, Morgantown, WV 26507-0880 304-285-4830 jenny.tennant@netl.doe.gov Michael Swanson Principal Investigator University of North Dakota Energy and Environmental Research Center 15 North 23rd Street Grand Forks, ND 58202 701-777-5239 MSwanson@undeerc.org PARTNERS Corning, Inc. PROJECT DURATION

317

Updraft Gasification at Pilot Scale of Hydrolytic Lignin Residue  

Science Journals Connector (OSTI)

Air at a low equivalence ratio was used as gasification medium. ... Air, oxygen, steam, or mixes of these can be used as gasification media; the gas flow is introduced at the bottom of the gasifier under the grate. ... The coalescence is achieved by means of cartridges of silicate of 0.3 m × 0.07 m in size placed inside the filters (from Pall Corp.). ...

N. Cerone; F. Zimbardi; L. Contuzzi; E. Alvino; M. O. Carnevale; V. Valerio

2014-05-29T23:59:59.000Z

318

Conceptual design of a black liquor gasification pilot plant  

SciTech Connect

In July 1985, Champion International completed a study of kraft black liquor gasification and use of the product gases in a combined cycle cogeneration system based on gas turbines. That study indicated that gasification had high potential as an alternative to recovery boiler technology and offered many advantages. This paper describes the design of the plant, the construction of the pilot plant, and finally presents data from operation of the plant.

Kelleher, E. G.

1987-08-01T23:59:59.000Z

319

Integrated gasification fuel cell (IGFC) demonstration test  

SciTech Connect

As concern about the environment generates interest in ultra-clean energy plants, fuel cell power plants can respond to the challenge. Fuel cells convert hydrocarbon fuels to electricity at efficiencies exceeding conventional heat engine technologies while generating extremely low emissions. Emissions of SOx and NOx are expected to be well below current and anticipated future standards. Nitrogen oxides, a product of combustion, will be extremely low in this power plant because power is produced electrochemically rather than by combustion. Due to its higher efficiencies, a fuel cell power plant also produces less carbon dioxide. Fuel cells in combination with coal gasification, are an efficient and environmentally acceptable means to utilize the abundant coal reserves both in the US and around the world. To demonstrate this technology, FuelCell Energy, Inc. (FCE), is planning to build and test a 2-MW Fuel Cell Power Plant for operation on coal derived gas. This power plant is based on Direct Fuel Cell (DFC{trademark}) technology and will be part of a Clean Coal V IGCC project supported by the US DOE. A British Gas Lurgi (BGL) slagging fixed-bed gasification system with cold gas clean up is planned as part of a 400 MW IGCC power plant to provide a fuel gas slip stream to the fuel cell. The IGFC power plant will be built by Kentucky Pioneer Energy, A subsidiary of Global Energy, in Clark County, KY. This demonstration will result in the world's largest fuel cell power plant operating on coal derived gas. The objective of this test is to demonstrate fuel cell operation on coal derived gas at a commercial scale and to verify the efficiency and environmental benefits.

Steinfeld, G.; Ghezel-Ayagh, H.; Sanderson, R.; Abens, S.

2000-07-01T23:59:59.000Z

320

Gasification Studies Task 4 Topical Report  

SciTech Connect

A key objective of the Task 4 activities has been to develop simulation tools to support development, troubleshooting and optimization of pressurized entrained-flow coal gasifiers. The overall gasifier models (Subtask 4.1) combine submodels for fluid flow (Subtask 4.2) and heat transfer (Subtask 4.3) with fundamental understanding of the chemical processes (Subtask 4.4) processes that take place as coal particles are converted to synthesis gas and slag. However, it is important to be able to compare predictions from the models against data obtained from actual operating coal gasifiers, and Subtask 4.6 aims to provide an accessible, non-proprietary system, which can be operated over a wide range of conditions to provide well-characterized data for model validation. Highlights of this work include: • Verification and validation activities performed with the Arches coal gasification simulation tool on experimental data from the CANMET gasifier (Subtask 4.1). • The simulation of multiphase reacting flows with coal particles including detailed gas-phase chemistry calculations using an extension of the one-dimensional turbulence model’s capability (Subtask 4.2). • The demonstration and implementation of the Reverse Monte Carlo ray tracing (RMCRT) radiation algorithm in the ARCHES code (Subtask 4.3). • Determination of steam and CO{sub 2} gasification kinetics of bituminous coal chars at high temperature and elevated pressure under entrained-flow conditions (Subtask 4.4). In addition, attempts were made to gain insight into the chemical structure differences between young and mature coal soot, but both NMR and TEM characterization efforts were hampered by the highly reacted nature of the soot. • The development, operation, and demonstration of in-situ gas phase measurements from the University of Utah’s pilot-scale entrained-flow coal gasifier (EFG) (Subtask 4.6). This subtask aimed at acquiring predictable, consistent performance and characterizing the environment within the gasifier.

Whitty, Kevin; Fletcher, Thomas; Pugmire, Ronald; Smith, Philip; Sutherland, James; Thornock, Jeremy; Boshayeshi, Babak; Hunsacker, Isaac; Lewis, Aaron; Waind, Travis; Kelly, Kerry

2014-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "injection catalytic gasification" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

NETL: Gasification Systems - Syngas Processing Systems  

NLE Websites -- All DOE Office Websites (Extended Search)

Syngas Processing Systems Syngas Processing Systems Gasification Systems Syngas Processing Systems The various downstream uses of syngas require that most of the contaminants present in raw syngas be removed to very low levels prior to use. Many of these contaminants can contribute to erosion, corrosion, and loss of strength in gas turbine components, and can act as poisons to the catalysts often used in syngas conversion and utilization processes. These same contaminants include or result in regulated air pollutants such as SOx, NOx, particulates, and mercury and other trace metals, which must be removed to increasingly low levels to meet stringent regulatory limits on air emissions. Conventional methods for removing sulfur and other contaminants from syngas typically rely on chemical or physical absorption processes operating at low temperatures. However, after contaminant removal, the gas has to be reheated prior to its use in a gas turbine or other chemical synthesis process; in the case of downstream hydrogen production, additional steam needs to be added back to the syngas. These process swings adversely impact the plant's thermal efficiency and cost. Techno-economic analysis shows that gas-cleaning processes amenable to higher operating temperatures could significantly reduce this efficiency loss and improve the gasification plant's commercial viability. It is also critical that, while improving efficiency and reducing cost, the gas cleaning removes a wide variety of coal contaminants (including hydrogen sulfide, ammonia, hydrogen chloride, and carbonyl sulfide, as well as various forms of trace metals, including arsenic, mercury, selenium, and cadmium) to extremely low levels. Accordingly, the R&D approach in this area focuses on the development of high-efficiency processes that operate at moderate to high temperatures and provide multi-contaminant control to meet the highest environmental standards.

322

NETL: Gasification - Recovery Act: High Temperature Syngas Cleanup  

NLE Websites -- All DOE Office Websites (Extended Search)

Program Background and Project Benefits Program Background and Project Benefits Gasification is used to convert a solid feedstock, such as coal, petcoke, or biomass, into a gaseous form, referred to as synthesis gas or syngas, which is primarily hydrogen and carbon monoxide. With gasification-based technologies, pollutants can be captured and disposed of or converted to useful products. Gasification can generate clean power by adding steam to the syngas in a water-gas-shift reactor to convert the carbon monoxide to carbon dioxide (CO2) and to produce additional hydrogen. The hydrogen and CO2 are separated-the hydrogen is used to make power and the CO2 is sent to storage, converted to useful products or used for EOR. In addition to efficiently producing electric power, a wide range of transportation fuels and chemicals can be produced from the cleaned syngas, thereby providing the flexibility needed to capitalize on the changing economic market. As a result, gasification provides a flexible technology option for using domestically available resources while meeting future environmental emission standards. Polygeneration plants that produce multiple products are uniquely possible with gasification technologies. The Gasification Systems program is developing technologies in three key areas to reduce the cost and increase the efficiency of producing syngas: (1) Feed Systems, (2) Gasifier Optimization and Plant Supporting Systems, and (3) Syngas Processing Systems.

323

NETL: Gasification - Development of Ion-Transport Membrane Oxygen  

NLE Websites -- All DOE Office Websites (Extended Search)

Program Background and Project Benefits Program Background and Project Benefits Gasification is used to convert a solid feedstock, such as coal, petcoke, or biomass, into a gaseous form, referred to as synthesis gas or syngas, which is primarily hydrogen and carbon monoxide. With gasification-based technologies, pollutants can be captured and disposed of or converted to useful products. Gasification can generate clean power by adding steam to the syngas in a water-gas-shift reactor to convert the carbon monoxide to carbon dioxide (CO2) and to produce additional hydrogen. The hydrogen and CO2 are separated-the hydrogen is used to make power and the CO2 is sent to storage, converted to useful products or used for EOR. In addition to efficiently producing electric power, a wide range of transportation fuels and chemicals can be produced from the cleaned syngas, thereby providing the flexibility needed to capitalize on the changing economic market. As a result, gasification provides a flexible technology option for using domestically available resources while meeting future environmental emission standards. Polygeneration plants that produce multiple products are uniquely possible with gasification technologies. The Gasification Systems program is developing technologies in three key areas to reduce the cost and increase the efficiency of producing syngas: (1) Feed Systems, (2) Gasifier Optimization and Plant Supporting Systems, and (3) Syngas Processing Systems.

324

Subtask 4.2 - Coal Gasification Short Course  

SciTech Connect

Major utilities, independent power producers, and petroleum and chemical companies are intent on developing a fleet of gasification plants primarily because of high natural gas prices and the implementation of state carbon standards, with federal standards looming. Currently, many projects are being proposed to utilize gasification technologies to produce a synthesis gas or fuel gas stream for the production of hydrogen, liquid fuels, chemicals, and electricity. Financing these projects is challenging because of the complexity, diverse nature of gasification technologies, and the risk associated with certain applications of the technology. The Energy & Environmental Research Center has developed a gasification short course that is designed to provide technical personnel with a broad understanding of gasification technologies and issues, thus mitigating the real or perceived risk associated with the technology. Based on a review of research literature, tutorial presentations, and Web sites on gasification, a short course presentation was prepared. The presentation, consisting of about 500 PowerPoint slides, provides at least 7 hours of instruction tailored to an audience's interests and needs. The initial short course is scheduled to be presented September 9 and 10, 2009, in Grand Forks, North Dakota.

Kevin Galbreath

2009-06-30T23:59:59.000Z

325

Novel Catalytic Membrane Reactors  

SciTech Connect

There are many industrial catalytic organic reversible reactions with amines or alcohols that have water as one of the products. Many of these reactions are homogeneously catalyzed. In all cases removal of water facilitates the reaction and produces more of the desired chemical product. By shifting the reaction to right we produce more chemical product with little or no additional capital investment. Many of these reactions can also relate to bioprocesses. Given the large number of water-organic compound separations achievable and the ability of the Compact Membrane Systems, Inc. (CMS) perfluoro membranes to withstand these harsh operating conditions, this is an ideal demonstration system for the water-of-reaction removal using a membrane reactor. Enhanced reaction synthesis is consistent with the DOE objective to lower the energy intensity of U.S. industry 25% by 2017 in accord with the Energy Policy Act of 2005 and to improve the United States manufacturing competitiveness. The objective of this program is to develop the platform technology for enhancing homogeneous catalytic chemical syntheses.

Stuart Nemser, PhD

2010-10-01T23:59:59.000Z

326

Development of a catalytically assisted combustor for a gas turbine  

Science Journals Connector (OSTI)

A catalytically assisted low \\{NOx\\} combustor has been developed which has the advantage of catalyst durability. This combustor is composed of a burner section and a premixed combustion section behind the burner section. The burner system consists of six catalytic combustor segments and six premixing nozzles, which are arranged alternately and in parallel. Fuel flow rate for the catalysts and the premixing nozzles are controlled independently. The catalytic combustion temperature is maintained under 1000°C, additional premixed gas is injected from the premixing nozzles into the catalytic combustion gas, and lean premixed combustion at 1300°C is carried out in the premixed combustion section. This system was designed to avoid catalytic deactivation at high temperature and thermal or mechanical shock fracture of the honeycomb monolith. In order to maintain the catalyst temperature under 1000°C, the combustion characteristics of catalysts at high pressure were investigated using a bench scale reactor and an improved catalyst was selected for the combustor test. A combustor for a 20 MW class multi-can type gas turbine was designed and tested under high pressure conditions using LNG fuel. Measurements of NOx, CO and unburned hydrocarbon were made and other measurements were made to evaluate combustor performance under various combustion temperatures and pressures. As a result of the tests, it was proved that \\{NOx\\} emission was lower than 10 ppm converted at 16% O2, combustion efficiency was almost 100% at 1300°C of combustor outlet temperature and 13.5 ata of combustor inlet pressure.

Yasushi Ozawa; Tomoharu Fujii; Mikio Sato; Takaaki Kanazawa; Hitoshi Inoue

1999-01-01T23:59:59.000Z

327

5, 35333559, 2005 Catalytic conversion  

E-Print Network (OSTI)

measurement technique, employing selective gas- phase catalytic conversion of methanol to formaldehyde it the second most abundant organic trace gas after methane. Methanol can play an important role in upper tropoACPD 5, 3533­3559, 2005 Catalytic conversion of methanol to formaldehyde S. J. Solomon et al. Title

Paris-Sud XI, Université de

328

Air-blown gasification of woody biomass in a bubbling fluidized bed gasifier  

Science Journals Connector (OSTI)

Abstract Air-blown gasification of woody biomass was investigated in a pilot-scale bubbling fluidized bed gasifier. Air was used as the gasifying agent as well as a fluidizing gas. Fuel was fed into the top of the gasifier and air was introduced from the bottom through a distributor. In order to control the composition of the product gas, the amounts of feedstock and gasifying agent being fed into the gasifier were varied, and the temperature distribution in the gasifier and the composition of the syngas were monitored. It was shown that the distribution of the reaction zones in the gasifier could be controlled by the air injection rate, and the composition of the syngas by the equivalence ratio of the reactants. Although the obtained syngas had a low caloric value, its heating value is adequate for power generation using a syngas engine.

Young Doo Kim; Chang Won Yang; Beom Jong Kim; Kwang Su Kim; Jeung Woo Lee; Ji Hong Moon; Won Yang; Tae U Yu; Uen Do Lee

2013-01-01T23:59:59.000Z

329

Application of the integrated gasification combined cycle technology and BGL gasification design for power generation  

SciTech Connect

Integrated gasification combined cycle (IGCC) technology promises to be the power generation technology of choice in the late 1990s and beyond. Based on the principle that almost any fuel can be burned more cleanly and efficiently if first turned into a gas, an IGCC plant extracts more electricity from a ton of coal by burning it as a gas in a turbine rather than as a solid in a boiler. Accordingly, coal gasification is the process of converting coal to a clean-burning synthetic gas. IGCC technology is the integration of the coal-gasification plant with a conventional combined-cycle plant to produce electricity. The benefits of this technology merger are many and result in a highly efficient and environmentally superior energy production facility. The lGCC technology holds significant implications for Asia-Pacific countries and for other parts of the world. High-growth regions require additional baseload capacity. Current low prices for natural gas and minimal emissions that result from its use for power generation favor its selection as the fuel source for new power generation capacity. However, fluctuations in fuel price and fuel availability are undermining the industry`s confidence in planning future capacity based upon gas-fueled generation. With the world`s vast coal reserves, there is a continuing effort to provide coal-fueled power generation technologies that use coal cleanly and efficiently. The lGCC technology accomplishes this objective. This chapter provides a summary of the status of lGCC technology and lGCC projects known to date. It also will present a technical overview of the British Gas/Lurgi (BGL) technology, one of the leading and most promising coal gasifier designs.

Edmonds, R.F. Jr.; Hulkowich, G.J.

1993-12-31T23:59:59.000Z

330

Gasification characteristics of combustible wastes in a 5 ton/day fixed bed gasifier  

Science Journals Connector (OSTI)

The gasification characteristics of combustible wastes were determined in ... To capture soot or unburned carbon from the gasification reaction, solid/gas separator and water fluidized...2: 10.7%, CH4: 6.0%, CO2:...

See Hoon Lee; Kyong Bin Choi; Jae Goo Lee…

2006-07-01T23:59:59.000Z

331

E-Print Network 3.0 - allothermal gasification gas- Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

of the gasifer, could cause... 2002. 13. Hansen, Martin, Gas Cleaning and Gas Engines for Small-Scale Biomass Gasification... , Orlando, Florida, USA NAWTEC18-3521 STATUS OF...

332

Experimental Study on Gasification of Jatropha Shells in a Downdraft Open Top Gasifier  

Science Journals Connector (OSTI)

A few major attractions of gasification are that it can convert waste or low-priced fuels, such as biomass, coal, and petcoke, into high-value chemicals. Utilization of...4]. Biomass gasification is the latest ge...

Lalta Prasad

2014-09-01T23:59:59.000Z

333

The development of Coke Carried-Heat Gasification Coal-Fired Combined Cycle  

Science Journals Connector (OSTI)

Carried-Heat Partial Gasification Combined cycle is a novel combined cycle which was proposed by Thermal Engineering Department ... technology, Coke Carried-Heat Gasification Coal-Fired Combined Cycle, as the imp...

Li Zhao; Xiangdong Xu

1999-12-01T23:59:59.000Z

334

Simulation of Bio-syngas Production from Biomass Gasification via Pressurized Interconnected Fluidized Beds  

Science Journals Connector (OSTI)

Bio-syngas production from biomass gasification via pressurized interconnected fluidized...T g), gasification pressure (p g) and steam to biomass ratio (S/B) on bio-syngas production

Fei Feng; Guohui Song; Laihong Shen…

2014-01-01T23:59:59.000Z

335

Syngas Production from Coal Gasification with CO2 Rich Gas Mixtures  

Science Journals Connector (OSTI)

Coal gasification with CO2 rich gas mixture is one of several promising new technologies associated with CO2 reduction in the atmosphere. Coal gasification with high CO2 concentration is suitable for producing la...

M. S. Alam; A. T. Wijayanta; K. Nakaso…

2013-01-01T23:59:59.000Z

336

Chemistry and mechanism of molten-salt catalysts in coal-gasification processes. Final report, January 1984-January 1985  

SciTech Connect

Alkali metal salts have been recognized as effective catalysts in coal gasification. However, the presence of reducing gases, in particular carbon monoxide, has recently been shown to have serious inhibitory effects on the catalyst performance. This program has addressed the question of the chemical interactions between carbon monoxide gas containing mixtures and the salt catalysts in liquid form by probing the solution chemistry by dynamic electrochemical techniques. The results of this study show that oxalate ions are formed by the reaction between carbonate ions and carbon monoxide gas. At temperatures above 700/sup 0/C, sulfate ions are directly attacked by carbon monoxide. The oxalate ions are electroactive and their electrochemistry has been studied and found to involve adsorption of oxalate and formation of reactive intermediates. The pathway likely involves an ECE sequence. The formation of active adsorbed species such as oxalate or sulfides at high temperature may be the means by which catalytic function of the salts is inhibited.

White, S.H.; Twardoch, U.M.

1985-02-01T23:59:59.000Z

337

Advanced CO2 Capture Technology for Low Rank Coal Integrated Gasification Combined Cycle (IGCC) Systems  

NLE Websites -- All DOE Office Websites (Extended Search)

CO CO 2 Capture Technology for Low Rank Coal Integrated Gasification Combined Cycle (IGCC) Systems Background Gasification of coal or other solid feedstocks (wood waste, petroleum coke, etc.) is a clean way to produce electricity and produce or co-produce a variety of commercial products. The major challenge is cost reduction; current integrated gasification combined cycle (IGCC) technology is estimated to produce power at a cost higher than that of pulverized coal combustion. However, the Gasification

338

Fluidized-bed gasification of an eastern oil shale  

SciTech Connect

The current conceptual HYTORT process design for the hydroretorting of oil shales employs moving-bed retorts that utilize shale particles larger than 3 mm. Work at the Institute of Gas Technology (IGT) is in progress to investigate the potential of high-temperature (1100 to 1300 K) fluidized-bed gasification of shale fines (<3 mm size) using steam and oxygen as a technique for more complete utilization of the resource. Synthesis gas produced from fines gasification can be used for making some of the hydrogen needed in the HYTORT process. After completing laboratory-scale batch and continuous gasification tests with several Eastern oil shales, two tests with Indiana New Albany shale were conducted in a 0.2 m diameter fluidized-bed gasification process development unit (PDU). A conceptual gasifier design for 95% carbon conversion was completed. Gasification of 20% of the mined shale can produce the hydrogen required by the HYTORT reactor to retort 80% of the remaining shale. 12 refs., 1 fig., 5 tabs.

Lau, F.S.; Rue, D.M.; Punwani, D.V.; Rex, R.C. Jr.

1987-01-01T23:59:59.000Z

339

Survey of biomass gasification. Volume III. Current technology and research  

SciTech Connect

This survey of biomass gasification was written to aid the Department of Energy and the Solar Energy Research Institute Biological and Chemical Conversion Branch in determining the areas of gasification that are ready for commercialization now and those areas in which further research and development will be most productive. Chapter 8 is a survey of gasifier types. Chapter 9 consists of a directory of current manufacturers of gasifiers and gasifier development programs. Chapter 10 is a sampling of current gasification R and D programs and their unique features. Chapter 11 compares air gasification for the conversion of existing gas/oil boiler systems to biomass feedstocks with the price of installing new biomass combustion equipment. Chapter 12 treats gas conditioning as a necessary adjunct to all but close-coupled gasifiers, in which the product is promptly burned. Chapter 13 evaluates, technically and economically, synthesis-gas processes for conversion to methanol, ammonia, gasoline, or methane. Chapter 14 compiles a number of comments that have been assembled from various members of the gasifier community as to possible roles of the government in accelerating the development of gasifier technology and commercialization. Chapter 15 includes recommendations for future gasification research and development.

None

1980-04-01T23:59:59.000Z

340

Waste Gasification by Thermal Plasma: A Review Frdric Fabry*, Christophe Rehmet, Vandad Rohani, Laurent Fulcheri  

E-Print Network (OSTI)

12 Waste Gasification by Thermal Plasma: A Review Frédéric Fabry*, Christophe Rehmet, Vandad Rohani proposes an overview of waste-to-energy conversion by gasification processes based on thermal plasma, of various waste gasification processes based on thermal plasma (DC or AC plasma torches) at lab scale versus

Paris-Sud XI, Université de

Note: This page contains sample records for the topic "injection catalytic gasification" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

Formation of CO precursors during char gasification with O2, CO2 and H2O  

E-Print Network (OSTI)

Formation of CO precursors during char gasification with O2, CO2 and H2O Alejandro Montoya a are presented to get insight into an unified mechanism of uncatalyzed carbon gasification. D 2002 Elsevier Science B.V. All rights reserved. Keywords: Gasification; Chemisorption; Molecular simulation; Surface

Truong, Thanh N.

342

Mar., 1955 GASIFICATIONOF CARBONRODSWITH CARBONDIOXIDE 241 GASIFICATION OF CARBON RODS WITH CARBON DIOXIDE1*2  

E-Print Network (OSTI)

Mar., 1955 GASIFICATIONOF CARBONRODSWITH CARBONDIOXIDE 241 GASIFICATION OF CARBON RODS WITH CARBON commercial carbons and their gasification rates with carbon dioxide at a series of temperatures between 900. No general correlation between these properties and the carbon gasification rates was found. Introduction

343

Modeling of a Biomass Gasification CHP Plant: Influence of Various Parameters on Energetic and Exergetic Efficiencies  

Science Journals Connector (OSTI)

Modeling of a Biomass Gasification CHP Plant: Influence of Various Parameters on Energetic and Exergetic Efficiencies ... This paper presents a theoretical assessment of energy, exergy, and syngas cleaning performances in a biomass gasification combined heat and power (CHP) plant with varying operating parameters. ... The analysis is carried out using a detailed model of a biomass gasification CHP plant developed with Aspen Plus. ...

Jessica François; Guillain Mauviel; Michel Feidt; Caroline Rogaume; Yann Rogaume; Olivier Mirgaux; Fabrice Patisson; Anthony Dufour

2013-10-21T23:59:59.000Z

344

Modeling the Performance, Emissions, and Cost of an Entrained-Flow Gasification Combined Cycle System Using  

E-Print Network (OSTI)

1 Modeling the Performance, Emissions, and Cost of an Entrained-Flow Gasification Combined Cycle-based Integrated Gasification Combined Cycle (IGCC) system using ASPEN. ASPEN is a steady-state chemical process-flow Integrated Gasification Combined Cycle (IGCC) system. This study aims at developing a base case analysis

Frey, H. Christopher

345

Stability of Supported Ruthenium Catalysts for Lignin Gasification in Supercritical Water  

Science Journals Connector (OSTI)

However, low-temperature methods for lignin gasification are desirable, because waste heat available from high-temperature processes in industry can be utilized for energy generation.1 ... The gasification of lignin proceeded in supercritical water, and all lignin was gasified completely over Ru/TiO2 after 180 min during the first use. ... water for gasification technique of wastes. ...

Mitsumasa Osada; Osamu Sato; Kunio Arai; Masayuki Shirai

2006-09-29T23:59:59.000Z

346

Syngas Production from Coal through Microwave Plasma Gasification: Influence of Oxygen, Steam, and Coal Particle Size  

Science Journals Connector (OSTI)

Syngas Production from Coal through Microwave Plasma Gasification: Influence of Oxygen, Steam, and Coal Particle Size ... Plasma gasification is widely applied because of its clean syngas production performance and high chemical reactivity accelerated by the free radicals produced by plasma. ... The syngas composition produced from plasma gasification at same conditions is affected by the physicochemical properties of coals. ...

Sang Jun Yoon; Jae Goo Lee

2011-11-23T23:59:59.000Z

347

The catalytic oxidation of propane  

E-Print Network (OSTI)

THE CATALYTIC OXIDATION OP PROPANE A Thesis By Charles Frederick Sandersont * * June 1949 Approval as to style and content recommended: Head of the Department of Chemical Engineering THE CATALYTICi OXIDATTON OF PROPANE A Thesis By Charles... Frederick ;Sandersonit * June 1949 THE CATALYTIC OXIDATION OP PROPANE A Thesis Submitted to the Faculty of the Agricultural and Mechanical College of Texas in Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy Major...

Sanderson, Charles Frederick

2013-10-04T23:59:59.000Z

348

ADVANCED GASIFICATION NETL Team Technical Coordinator: James Bennett  

NLE Websites -- All DOE Office Websites (Extended Search)

GASIFICATION NETL Team Technical Coordinator: James Bennett GASIFICATION NETL Team Technical Coordinator: James Bennett Name Project Role Affiliation University Project Title Bhattacharyya, Debangsu CO-PI WVU Turton, Richard CO-PI WVU Jones, Dustin Grad Student WVU Weiland, Nathan PI WVU C3M Kinetic Development Baseline Co-Gasification Kinetics Support Turton, Richard PI WVU Chaudhari, Kiran Grad Student WVU Pisupati, Sarma PI PSU Devolatilization and Char Kinetics Support Song, Xueyan PI WVU Different Gasifier Liner Wear Support Song, Xueyan PI WVU High Vanadium Oxide Study Support Musser, Jordan PI WVU Implement Heat & Mass Transfer to MFIX-PIC Support Dietiker, Jean- Francois PI WVU MFIX Development Verification and Validation Support Kuhlman, John PI WVU Model Development Support Weiland, Nathan PI WVU Bedick, Clinton Researcher

349

DOE Hydrogen Analysis Repository: Biomass Gasification, Microturbines and  

NLE Websites -- All DOE Office Websites (Extended Search)

Biomass Gasification, Microturbines and Fuel Cells for Farming Operations Biomass Gasification, Microturbines and Fuel Cells for Farming Operations Project Summary Full Title: Opportunities for Hydrogen: An Analysis of the Application of Biomass Gasification to Farming Operations Using Microturbines and Fuel Cells Project ID: 133 Principal Investigator: Darren Schmidt Purpose To determine the feasibility of a hydrogen based biomass fueled power installation for farming operations. Performer Principal Investigator: Darren Schmidt Organization: University of North Dakota Energy & Environmental Research Center Address: 15 North 23rd Street, Stop 9018 Grand Forks, ND 58202-9018 Telephone: 701-777-5120 Email: dschmidt@undeerc.org Additional Performers: J.R Gunderson, University of North Dakota Period of Performance Start: June 1999

350

NETL: Gasification - National Carbon Capture Center at the Power Systems  

NLE Websites -- All DOE Office Websites (Extended Search)

Gasification Gasification National Carbon Capture Center at the Power Systems Development Facility National Carbon Capture Center Participants The Power Systems Development Facility (PSDF) is a state-of-the-art test center sponsored by the U.S. Department of Energy (DOE) and dedicated to the advancement of clean coal technology. The PSDF now houses the National Carbon Capture Center (NCCC) to address the nation's need for cost-effective, commercially viable CO2 capture options for flue gas from pulverized coal power plants and syngas from coal gasification power plants. The NCCC focuses national efforts on reducing greenhouse gas emissions through technological innovation, and serve as a neutral test center for emerging carbon capture technologies. PSDF-NCCC Background

351

STATEMENT OF CONSIDERATIONS REQUEST BY CHEVRONTEXACO WORLDWIDE POWER & GASIFICATION  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

CHEVRONTEXACO WORLDWIDE POWER & GASIFICATION CHEVRONTEXACO WORLDWIDE POWER & GASIFICATION FOR AN ADVANCE WAIVER OF DOMESTIC AND FOREIGN PATENT RIGHTS UNDER SUBCONTRACT QZ001 UNDER DOE COOPERATIVE AGREEMENT NO. DE-FC26-99FT40675; W(A)-03-001, CH-1127 The Petitioner, ChevronTexaco Worldwide Power & Gasification (ChevronTexaco) is a subcontractor to Research Triangle Institute (RTI) under the subject cost plus fixed fee agreement for the performance of work entitled, Novel Technologies for Gaseous Containment Control. The purpose of the agreement is to prove the feasibility of synthesis gas clean up techniques, including the warm synthesis gas process based on the RVS-1 sorbent developed by the Department of Energy and RTI and, for reverse selective membrane technology developed by Dupont and Air Liquide, Membrane Dupont Air Liquide (MEDAL) and RTI.

352

Thermophysical models of underground coal gasification and FEM analysis  

SciTech Connect

In this study, mathematical models of the coupled thermohydromechanical process of coal rock mass in an underground coal gasification panel are established. Combined with the calculation example, the influence of heating effects on the observed values and simulated values for pore water pressure, stress, and displacement in the gasification panel are fully discussed and analyzed. Calculation results indicate that 38, 62, and 96 days after the experiment, the average relative errors for the calculated values and measured values for the temperature and water pressure were between 8.51-11.14% and 3-10%, respectively; with the passage of gasification time, the calculated errors for the vertical stress and horizontal stress gradually declined, but the simulated errors for the horizontal and vertical displacements both showed a rising trend. On the basis of the research results, the calculated values and the measured values agree with each other very well.

Yang, L.H. [China University of Mining & Technology, Xuzhou (China)

2007-11-15T23:59:59.000Z

353

Multiphysics modeling of carbon gasification processes in a well-stirred reactor with detailed gas-phase chemistry  

E-Print Network (OSTI)

Multiphysics modeling of carbon gasification processes in a well-stirred reactor with detailed gas: Coal gasification Carbon gasification Detailed chemistry Heterogeneous surface reactions Radiation Multi-physics numerical modeling a b s t r a c t Fuel synthesis through coal and biomass gasification

Qiao, Li

354

Synthesis of aliphatic hydrocarbons from the gasification products of oil shale from the Leningrad and Kashpir deposits  

Science Journals Connector (OSTI)

The experimental results of the gasification of oil shale from the Leningrad and Kashpir deposits and...

T. A. Avakyan; Yu. A. Strizhakova; A. S. Malinovskii; A. L. Lapidus

2012-05-01T23:59:59.000Z

355

Characterization of cellulosic wastes and gasification products from chicken farms  

SciTech Connect

Highlights: Black-Right-Pointing-Pointer The gas chromatography indicated the variable quality of the producer gas. Black-Right-Pointing-Pointer The char had appreciable NPK values, and can be used as a fertiliser. Black-Right-Pointing-Pointer The bio-oil produced was of poor quality, having high moisture content and low pH. Black-Right-Pointing-Pointer Mass and energy balances showed inadequate level energy recovery from the process. Black-Right-Pointing-Pointer Future work includes changing the operating parameters of the gasification unit. - Abstract: The current article focuses on gasification as a primary disposal solution for cellulosic wastes derived from chicken farms, and the possibility to recover energy from this process. Wood shavings and chicken litter were characterized with a view to establishing their thermal parameters, compositional natures and calorific values. The main products obtained from the gasification of chicken litter, namely, producer gas, bio-oil and char, were also analysed in order to establish their potential as energy sources. The experimental protocol included bomb calorimetry, pyrolysis combustion flow calorimetry (PCFC), thermo-gravimetric analyses (TGA), differential scanning calorimetry (DSC), Fourier transform infrared (FT-IR) spectroscopy, Raman spectroscopy, elemental analyses, X-ray diffraction (XRD), mineral content analyses and gas chromatography. The mass and energy balances of the gasification unit were also estimated. The results obtained confirmed that gasification is a viable method of chicken litter disposal. In addition to this, it is also possible to recover some energy from the process. However, energy content in the gas-phase was relatively low. This might be due to the low energy efficiency (19.6%) of the gasification unit, which could be improved by changing the operation parameters.

Joseph, Paul, E-mail: p.joseph@ulster.ac.uk [School of the Built Environment and the Built Environment Research Institute, University of Ulster, Newtownabbey BT37 0QB, County Antrim, Northern Ireland (United Kingdom); Tretsiakova-McNally, Svetlana; McKenna, Siobhan [School of the Built Environment and the Built Environment Research Institute, University of Ulster, Newtownabbey BT37 0QB, County Antrim, Northern Ireland (United Kingdom)

2012-04-15T23:59:59.000Z

356

Flow Simulation and Optimization of Plasma Reactors for Coal Gasification  

Science Journals Connector (OSTI)

This paper reports a 3-d numerical simulation system to analyze the complicated flow in plasma reactors for coal gasification, which involve complex chemical reaction, two-phase flow and plasma effect. On the basis of analytic results, the distribution of the density, temperature and components' concentration are obtained and a different plasma reactor configuration is proposed to optimize the flow parameters. The numerical simulation results show an improved conversion ratio of the coal gasification. Different kinds of chemical reaction models are used to simulate the complex flow inside the reactor. It can be concluded that the numerical simulation system can be very useful for the design and optimization of the plasma reactor.

Ji Chunjun; Zhang Yingzi; Ma Tengcai

2003-01-01T23:59:59.000Z

357

Release of Fuel-Bound Nitrogen during Biomass Gasification  

Science Journals Connector (OSTI)

Gasification of four biomass feedstocks (leucaena, sawdust, bagasse, and banagrass) with significantly different fuel-bound nitrogen (FBN) content was investigated to determine the effects of operational parameters and nitrogen content of biomass on the partitioning of FBN among nitrogenous gas species. ... The present study attempts to clarify the effects of gasification conditions and fuel on the release and evolution of biomass FBN through parallel experiments utilizing four different biomass feedstocks having significantly different FBN contents. ... Four types of biomass feedstocks were used in the experimentsleucaena, sawdust, bagasse, and banagrass. ...

Jiachun Zhou; Stephen M. Masutani; Darren M. Ishimura; Scott Q. Turn; Charles M. Kinoshita

2000-01-29T23:59:59.000Z

358

FEED SYSTEM INNOVATION FOR GASIFICATION OF LOCALLY ECONOMICAL ALTERNATIVE FUELS (FIGLEAF)  

SciTech Connect

The Feed System Innovation for Gasification of Locally Economical Alternative Fuels (FIGLEAF) project is being conducted by the Energy and Environmental Research Center and Gasification Engineering Corporation of Houston, Texas (a subsidiary of Global Energy Inc., Cincinnati, Ohio), with 80% cofunding from the U.S. Department of Energy. The goal of the project is to identify and evaluate low-value fuels that could serve as alternative feedstocks and to develop a feed system to facilitate their use in integrated gasification combined cycle and gasification coproduction facilities. The long-term goal, to be accomplished in a subsequent project, is to install a feed system for the selected fuels at Global Energy's commercial-scale 262-MW Wabash River Coal Gasification Facility in West Terre Haute, Indiana. The feasibility study undertaken for the project consists of identifying and evaluating the economic feasibility of potential fuel sources, developing a feed system design capable of providing a fuel at 400 psig to the second stage of the E-Gas (Destec) gasifier to be cogasified with coal at up to 30% on a Btu basis, performing bench- and pilot-scale testing to verify concepts and clarify decision-based options, reviewing prior art with respect to high-pressure feed system designs, and determining the economics of cofeeding alternative feedstocks with the conceptual feed system design. Activities and results thus far include the following. Several potential alternative fuels have been obtained for evaluation and testing as potential feedstocks, including sewage sludge, used railroad ties, urban wood waste, municipal solid waste, and used waste tires/tire-derived fuel. Only fuels with potential tipping fees were considered; potential energy crop fuels were not considered since they would have a net positive cost to the plant. Based on the feedstock assessment, sewage sludge has been selected as one of the primary feedstocks for consideration at the Wabash plant. Because of the limited waste heat available for drying and the ability of the gasifier to operate with alternative feedstocks at up to 80% moisture, a decision was made to investigate a pumping system for delivering the as-received fuel across the pressure boundary. High-temperature drop-tube furnace tests were conducted to determine if explosive fragmentation of high-moisture sludge droplets could be expected, but showed that these droplets underwent a shrinking and densification process that implies that the sludge will have to be well dispersed when injected into the gasifier. Fuel dispersion nozzles have been obtained for measuring how well the sludge can be dispersed in the second stage of the gasifier. Future work will include leasing a Schwing America pump to test pumping sewage sludge against 400 psig. In addition, sludge dispersion testing will be completed using two different dispersion nozzles to determine their ability to generate sludge particles small enough to be entrained out of the E-Gas entrained-flow gasifier.

Michael L. Swanson; Mark A. Musich; Darren D. Schmidt

2001-11-01T23:59:59.000Z

359

Mass transfer effects in a gasification riser  

SciTech Connect

In the development of multiphase reacting computational fluid dynamics (CFD) codes, a number of simplifications were incorporated into the codes and models. One of these simplifications was the use of a simplistic mass transfer correlation for the faster reactions and omission of mass transfer effects completely on the moderate speed and slow speed reactions such as those in a fluidized bed gasifier. Another problem that has propagated is that the mass transfer correlation used in the codes is not universal and is being used far from its developed bubbling fluidized bed regime when applied to circulating fluidized bed (CFB) riser reactors. These problems are true for the major CFD codes. To alleviate this problem, a mechanistic based mass transfer coefficient algorithm has been developed based upon an earlier work by Breault et al. This fundamental approach uses the local hydrodynamics to predict a local, time varying mass transfer coefficient. The predicted mass transfer coefficients and the corresponding Sherwood numbers agree well with literature data and are typically about an order of magnitude lower than the correlation noted above. The incorporation of the new mass transfer model gives the expected behavior for all the gasification reactions evaluated in the paper. At the expected and typical design values for the solid flow rate in a CFB riser gasifier an ANOVA analysis has shown the predictions from the new code to be significantly different from the original code predictions. The new algorithm should be used such that the conversions are not over predicted. Additionally, its behaviors with changes in solid flow rate are consistent with the changes in the hydrodynamics.

Breault, Ronald W [U.S. DOE; Li, Tingwen [URS; Nicoletti, Phillip [URS

2013-01-01T23:59:59.000Z

360

Fixed-bed gasification research using US coals. Volume 16. Gasification of 2-inch Minnesota peat sods  

SciTech Connect

A single, fixed-bed Wellman-Galusha gasifier coupled with a hot, raw gas combustion system and scubber used to gasify numerous coals from throughout the United States. The gasification test program is organized as a cooperative effort by private industrial participants and government agencies. The consortium of participants is organized under the Mining and Industrial Fuel Gas (MIFGa) group. This report is the sixteenth volume in a series of reports describing the atmospheric pressure, fixed-bed gasification of US coals. This specific test report describes the gasification of two-inch Minnesota peat sods, which began on June 24, 1985 and was completed on June 27, 1985. 4 refs., 18 figs., 14 tabs.

Thimsen, D.; Maurer, R.E.; Pooler, A.R.; Pui, D.; Liu, B.; Kittelson, D.

1985-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "injection catalytic gasification" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Novel hydrogen separation device development for coal gasification system applications. Final report  

SciTech Connect

This study was undertaken for the development of a novel Electrochemical Hydrogen Separator (EHS) technology for low-cost hydrogen separation from coal derived gases. Design and operating parameter testing was performed using subscale cells (25 cm{sup 2}). High H{sub 2} purity, >99% is one of the main features of the EHS. It was found that N{sub 2}, CO{sub 2} and CH{sub 4} behave as equivalent inerts; EHS performance is not affected by the balance of feed gas containing these components. This product purity level is not sacrificed by increased H{sub 2} recovery. CO, however, does adversely affect EHS performance and therefore feed stream pretreatment is recommended. Low levels of H{sub 2}S and NH{sub 3} were added to the feed gas stream and it was verified that these impurities did not affect EHS performance. Task 2 demonstrated the scale-up to full size multi-cell module operation while maintaining a stable energy requirement. A 10-cell full-size module (1050 cm{sup 2} cell active area) was operated for over 3,800 hours and gave a stable baseline performance. Several applications for the EHS were investigated. The most economically attractive systems incorporating an EHS contain low pressure, dilute hydrogen streams, such as coal gasification carbonate fuel cell systems, hydrogen plant purification and fluid catalytic cracker units. In addition, secondary hydrogen recovery from PSA or membrane tailstreams using an EHS may increase overall system efficiency.

Not Available

1993-08-01T23:59:59.000Z

362

Effect of steam injection location on syngas obtained from an air–steam gasifier  

Science Journals Connector (OSTI)

Abstract For a fluidized-bed gasifier, reaction conditions vary along the height of the reactor. Hence, the steam injection location may have a considerable effect on the syngas quality. The objective of this study was to investigate the effects of steam injection location and steam-to-biomass ratio (SBR) on the syngas quality generated from an air–steam gasification of switchgrass in a 2–5 kg/h autothermal fluidized-bed gasifier. Steam injection locations of 51, 152, and 254 mm above the distributor plate and \\{SBRs\\} of 0.1, 0.2, and 0.3 were selected. Results showed that the syngas H2 and CO yields were significantly influenced by the steam injection location (p gasifier efficiencies (cold gas efficiency of 67%, hot gas efficiency of 72%, and carbon conversion efficiency of 96%) were at the steam injection location of 254 mm and SBR of 0.2.

Ashokkumar M. Sharma; Ajay Kumar; Raymond L. Huhnke

2014-01-01T23:59:59.000Z

363

Economic Analysis of a 3MW Biomass Gasification Power Plant  

E-Print Network (OSTI)

green waste for use in a biomass gasification process togasification method to process some of the 1.4 million tons of wastegasification / power generation model, accessed April 2008 from http://biomass.ucdavis.edu/calculator.html 10. California Integrated Waste

Cattolica, Robert; Lin, Kathy

2009-01-01T23:59:59.000Z

364

Advances in mathematical modeling of fluidized bed gasification  

Science Journals Connector (OSTI)

Abstract Gasification is the thermochemical conversion of solid fuel into the gas which contains mainly hydrogen, carbon monoxide, carbon dioxide, methane and nitrogen. In gasification, fluidized bed technology is widely used due to its various advantageous features which include high heat transfer, uniform and controllable temperature and favorable gas–solid contacting. Modeling and simulation of fluidized bed gasification is useful for optimizing the gasifier design and operation with minimal temporal and financial cost. The present work investigates the different modeling approaches applied to the fluidized bed gasification systems. These models are broadly classified as the equilibrium model and the rate based or kinetic model. On the other hand, depending on the description of the hydrodynamic of the bed, fluidized bed models may also be classified as the two-phase flow model, the Euler–Euler model and the Euler–Lagrange model. Mathematical formulation of each of the model mentioned above and their merits and demerits are discussed. Detail reviews of different model used by different researchers with major results obtained by them are presented while the special focus is given on Euler–Euler and Euler–Lagrange CFD models.

Chanchal Loha; Sai Gu; Juray De Wilde; Pinakeswar Mahanta; Pradip K. Chatterjee

2014-01-01T23:59:59.000Z

365

Chapter 5 - Environmental Impact of Black Liquor Gasification  

Science Journals Connector (OSTI)

Environmental impact of black liquor gasification (BLG) is discussed. Biofuels from a BLG process excel in terms of well-to-wheel carbon dioxide emission reduction and energy efficiency. Forest biorefinery utilizing gasification (in a black liquor gasification combined cycle (BLGCC) configuration) rather than a Tomlinson boiler is predicted to produce significantly fewer pollutant emissions due to the intrinsic characteristics of the BLGCC technology. Syngas cleanup conditioning removes a considerable amount of contaminants and gas turbine combustion is more efficient and complete than boiler combustion. Also, there could be reductions in pollutant emissions and hazardous wastes resulting from cleaner production of chemicals and fuels that are now manufactured using fossil energy resources. Production of power, fuels, chemicals, and other products from biomass resources creates a net zero generation of carbon dioxide as plants are renewable carbon sinks. BLG whether conducted at high or low temperatures is still superior to the current recovery boiler combustion technology. Implementation of IGCC power plants will cause net savings in cooling water requirements and net reductions in wastewater discharges. The most significant environmental impact caused by BLG will occur in air emissions. The overall reduction of Total reduced sulphur (TRS) gases using gasification technology will also reduce odor, which will improve public acceptance of pulp and paper mills, particularly in populated areas.

Pratima Bajpai

2014-01-01T23:59:59.000Z

366

Enabling Small-Scale Biomass Gasification for Liquid Fuel Production  

Energy.gov (U.S. Department of Energy (DOE))

Breakout Session 2A—Conversion Technologies II: Bio-Oils, Sugar Intermediates, Precursors, Distributed Models, and Refinery Co-Processing Enabling Small-Scale Biomass Gasification for Liquid Fuel Production Santosh Gangwal, Director–Business Development, Energy Technologies, Southern Research Institute

367

Gasification characteristics and kinetics for an Eastern oil shale  

SciTech Connect

Gasification reactivity of an Eastern oil shale was studied in a three-year research project under a cooperative agreement between the Department of Energy, Morgantown Energy Technology Center, and HYCRUDE Corp. to expand the data base on the hydroretorting of Eastern oil shales. Gasification tests were conducted with the Indiana New Albany oil shale during the first year of the program. A total of six Eastern oil shales are planned to be tested during the program. A laboratory thermobalance and a 2-inch diameter fluidized bed were used to conduct gasification tests with Indiana New Albany oil shale. Temperature and pressure ranges used were 1600 to 1900/sup 0/F and 15 to 500 psig, respectively. Fifteen thermobalance tests were made in hydrogen/steam and synthesis gas/steam mixtures. Six fluidized-bed tests were made in the same synthesis gas/steam mixture. Carbon conversions as high as 95% were achieved. Thermobalance test results and a kinetic description of weight loss during hydrogen/steam gasification are presented. 14 refs., 6 figs., 4 tabs.

Lau, F.S.; Rue, D.M.; Punwani, D.V.; Rex, R.C. Jr.

1987-01-01T23:59:59.000Z

368

EIS-0007: Low Btu Coal Gasification Facility and Industrial Park  

Energy.gov (U.S. Department of Energy (DOE))

The U.S. Department of Energy prepared this environmental impact statement which evaluates the potential environmental impacts that may be associated with the construction and operation of a low-Btu coal gasification facility and the attendant industrial park in Georgetown, Scott County, Kentucky.

369

Underground Gasification: An Alternate Way to Exploit Coal  

Science Journals Connector (OSTI)

...quality of the product gas were pre-dictable...spec-ulate that the cost of gas from the Soviet process...gasification could allow gas to leak out of the chamber...future, and the sole remaining question will be the economics...how it affects marine life are among the most complex...

THOMAs H. MAUGH II

1977-12-16T23:59:59.000Z

370

EIS-0409: Kemper County Integrated Gasification Combined Cycle Project, Mississippi  

Energy.gov (U.S. Department of Energy (DOE))

This EIS analyzes DOE's decision to provide funding for the Kemper County Integrated Gasification Combined Cycle Project in Kemper County, Mississippi to assess the potential environmental impacts associated with the construction and operation of a project proposed by Southern Power Company, through its affiliate Mississippi Power Company, which has been selected by DOE for consideration under the Clean Coal Power Initiative (CCPI) program.

371

Prospects for the Gasification of Refuse-Derived Fuel (RDF)  

E-Print Network (OSTI)

Fluidized-bed gasification of wood waste is now a commercially proven technology. An Omnifuel gasifier in Hearst, Ontario, has been in operation since early 1981. It produces a low-BTU gas which is used to displace natural gas in existing boilers...

Woodruff, K. L.; Guard, R. F. W.

1983-01-01T23:59:59.000Z

372

EIS-0072: Great Plains Gasification Project, Mercer County, North Dakota  

Energy.gov (U.S. Department of Energy (DOE))

The Office of Fossil Energy prepared this EIS to evaluate the impacts of a project to construct a 125 million cubic feet per day coal gasification facility located in Mercer County, North Dakota. The Office of Fossil Energy adopted three environmental impact evaluation documents prepared by other Federal agencies to develop this EIS.

373

Power Systems Development Facility Gasification Test Campaign TC20  

SciTech Connect

In support of technology development to utilize coal for efficient, affordable, and environmentally clean power generation, the Power Systems Development Facility (PSDF), located in Wilsonville, Alabama, routinely demonstrates gasification technologies using various types of coal. The PSDF is an engineering scale demonstration of key features of advanced coal-fired power systems, including a Transport Gasifier, a hot gas particulate control device (PCD), advanced syngas cleanup systems, and high-pressure solids handling systems. This report summarizes the results of the first demonstration of the Transport Gasifier following significant modifications of the gasifier configuration. This demonstration took place during test campaign TC20, occurring from August 8 to September 23, 2006. The modifications proved successful in increasing gasifier residence time and particulate collection efficiency, two parameters critical in broadening of the fuel operating envelope and advancing gasification technology. The gasification process operated for over 870 hours, providing the opportunity for additional testing of various gasification technologies, such as PCD failsafe evaluation and sensor development.

Southern Company Services

2006-09-30T23:59:59.000Z

374

Gasification of rice husk in a cyclone gasifier  

Science Journals Connector (OSTI)

The experimental results of air gasification of rice husk in the cyclone gasifier were presented at the fuel rate of...3 to 3.11 MJ/Nm3 and the cold gas efficiency decreases from 64% to 31%. However, the tar cont...

Shaozeng Sun; Yijun Zhao; Fengming Su; Feng Ling

2009-03-01T23:59:59.000Z

375

Power Systems Development Facility Gasification Test Campaign TC16  

SciTech Connect

In support of technology development to utilize coal for efficient, affordable, and environmentally clean power generation, the Power Systems Development Facility (PSDF) located in Wilsonville, Alabama, routinely demonstrates gasification technologies using various types of coals. The PSDF is an engineering scale demonstration of key features of advanced coal-fired power systems, including a KBR (formerly Kellogg Brown & Root) Transport Gasifier, a hot gas particulate control device, advanced syngas cleanup systems, and high-pressure solids handling systems. This report discusses Test Campaign TC16 of the PSDF gasification process. TC16 began on July 14, 2004, lasting until August 24, 2004, for a total of 835 hours of gasification operation. The test campaign consisted of operation using Powder River Basin (PRB) subbituminous coal and high sodium lignite from the North Dakota Freedom mine. The highest gasifier operating temperature mostly varied from 1,760 to 1,850 F with PRB and 1,500 to 1,600 F with lignite. Typically, during PRB operations, the gasifier exit pressure was maintained between 215 and 225 psig using air as the gasification oxidant and between 145 and 190 psig while using oxygen as the oxidant. With lignite, the gasifier operated only in air-blown mode, and the gasifier outlet pressure ranged from 150 to 160 psig.

Southern Company Services

2004-08-24T23:59:59.000Z

376

Catalytic distillation extends its reach  

SciTech Connect

Since the early 1980s, catalytic distillation processes have been selected by more than a hundred operators for various applications. Since such a unit performs both reaction and distillation simultaneously, a combined column can replace a separate, fixed-bed reactor and distillation column, thereby eliminating equipment and reducing capital costs. And, compared to the conventional approach, catalytic distillation may also improve other factors, such as reactant conversion, selectivity, mass transfer, operating pressure, oligomer formation and catalyst fouling. The constant washing of the catalyst by liquid flowing down the column and the distillation of high-boiling foulants results in extended catalyst life. Four selective hydrogenation applications of catalytic distillation are discussed: Butadiene selective hydrogenation combined within an MTBE unit; Pentadiene selective hydrogenation; C{sub 4} acetylene conversion; and Benzene saturation.

Rock, K.; McGuirk, T. [Catalytic Distillation Technologies, Houston, TX (United States); Gildert, G.R. [Catalytic Distillation Technologies, Pasadena, TX (United States)

1997-07-01T23:59:59.000Z

377

Gasification and co-gasification of biomass wastes: Effect of the biomass origin and the gasifier operating conditions  

Science Journals Connector (OSTI)

Air gasification of different biomass fuels, including forestry (pinus pinaster pruning) and agricultural (grapevine and olive tree pruning) wastes as well as industry wastes (sawdust and marc of grape), has been carried out in a circulating flow gasifier in order to evaluate the potential of using these types of biomass in the same equipment, thus providing higher operation flexibility and minimizing the effect of seasonal fuel supply variations. The potential of using biomass as an additional supporting fuel in coal fuelled power plants has also been evaluated through tests involving mixtures of biomass and coal–coke, the coke being a typical waste of oil companies. The effect of the main gasifier operating conditions, such as the relative biomass/air ratio and the reaction temperature, has been analysed to establish the conditions allowing higher gasification efficiency, carbon conversion and/or fuel constituents (CO, H2 and CH4) concentration and production. Results of the work encourage the combined use of the different biomass fuels without significant modifications in the installation, although agricultural wastes (grapevine and olive pruning) could to lead to more efficient gasification processes. These latter wastes appear as interesting fuels to generate a producer gas to be used in internal combustion engines or gas turbines (high gasification efficiency and gas yield), while sawdust could be a very adequate fuel to produce a H2-rich gas (with interest for fuel cells) due to its highest reactivity. The influence of the reaction temperature on the gasification characteristics was not as significant as that of the biomass/air ratio, although the H2 concentration increased with increasing temperature.

Magín Lapuerta; Juan J. Hernández; Amparo Pazo; Julio López

2008-01-01T23:59:59.000Z

378

Understanding ammonia selective catalytic reduction kinetics...  

NLE Websites -- All DOE Office Websites (Extended Search)

temperature programmed reduction (TPR), and electron paramagnetic resonance (EPR) spectroscopy. Catalytic properties are examined using NO oxidation, ammonia oxidation,...

379

Biomass Gasification Research Facility Final Report  

SciTech Connect

While thermochemical syngas production facilities for biomass utilization are already employed worldwide, exploitation of their potential has been inhibited by technical limitations encountered when attempting to obtain real-time syngas compositional data required for process optimization, reliability, and syngas quality assurance. To address these limitations, the Gas Technology Institute (GTI) carried out two companion projects (under US DOE Cooperative Agreements DE-FC36-02GO12024 and DE-FC36-03GO13175) to develop and demonstrate the equipment and methods required to reliably and continuously obtain accurate and representative on-line syngas compositional data. These objectives were proven through a stepwise series of field tests of biomass and coal gasification process streams. GTI developed the methods and hardware for extractive syngas sample stream delivery and distribution, necessary to make use of state-of-the-art on-line analyzers to evaluate and optimize syngas cleanup and conditioning. The primary objectives of Cooperative Agreement DE-FC36-02GO12024 were the selection, acquisition, and application of a suite of gas analyzers capable of providing near real-time gas analyses to suitably conditioned syngas streams. A review was conducted of sampling options, available analysis technologies, and commercially available analyzers, that could be successfully applied to the challenging task of on-line syngas characterization. The majority of thermochemical process streams comprise multicomponent gas mixtures that, prior to crucial, sequential cleanup procedures, include high concentrations of condensable species, multiple contaminants, and are often produced at high temperatures and pressures. Consequently, GTI engaged in a concurrent effort under Cooperative Agreement DE-FC36-03GO13175 to develop the means to deliver suitably prepared, continuous streams of extracted syngas to a variety of on-line gas analyzers. The review of candidate analysis technology also addressed safety concerns associated with thermochemical process operation that constrain the location and configuration of potential gas analysis equipment. Initial analyzer costs, reliability, accuracy, and operating and maintenance costs were also considered prior to the assembly of suitable analyzers for this work. Initial tests at GTI’s Flex-Fuel Test Facility (FFTF) in late 2004 and early 2005 successfully demonstrated the transport and subsequent analysis of a single depressurized, heat-traced syngas stream to a single analyzer (an Industrial Machine and Control Corporation (IMACC) Fourier-transform infrared spectrometer (FT-IR)) provided by GTI. In March 2005, our sampling approach was significantly expanded when this project participated in the U.S. DOE’s Novel Gas Cleaning (NGC) project. Syngas sample streams from three process locations were transported to a distribution manifold for selectable analysis by the IMACC FT-IR, a Stanford Research Systems QMS300 Mass Spectrometer (SRS MS) obtained under this Cooperative Agreement, and a Varian micro gas chromatograph with thermal conductivity detector (?GC) provided by GTI. A syngas stream from a fourth process location was transported to an Agilent Model 5890 Series II gas chromatograph for highly sensitive gas analyses. The on-line analyses made possible by this sampling system verified the syngas cleaning achieved by the NGC process. In June 2005, GTI collaborated with Weyerhaeuser to characterize the ChemrecTM black liquor gasifier at Weyerhaeuser’s New Bern, North Carolina pulp mill. Over a ten-day period, a broad range of process operating conditions were characterized with the IMACC FT-IR, the SRS MS, the Varian ?GC, and an integrated Gas Chromatograph, Mass Selective Detector, Flame Ionization Detector and Sulfur Chemiluminescence Detector (GC/MSD/FID/SCD) system acquired under this Cooperative Agreement from Wasson-ECE. In this field application, a single sample stream was extracted from this low-pressure, low-temperature process and successfully analyzed by these devices. In late 2005,

Snyder, Todd R.; Bush, Vann; Felix, Larry G.; Farthing, William E.; Irvin, James H.

2007-09-30T23:59:59.000Z

380

Development of Kinetics and Mathematical Models for High Pressure Gasification of Lignite-Switchgrass Blends  

NLE Websites -- All DOE Office Websites (Extended Search)

Kinetics and Mathematical Kinetics and Mathematical Models for High Pressure Gasification of Lignite-Switchgrass Blends Background Significant progress has been made in recent years in controlling emissions resulting from coal-fired electricity generation in the United States through the research, development, and deployment of innovative technologies such as gasification. Gasification is a process that converts solid feedstocks such as coal, biomass, or blends

Note: This page contains sample records for the topic "injection catalytic gasification" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Assessment of the SRI Gasification Process for Syngas Generation with HTGR Integration -- White Paper  

SciTech Connect

This white paper is intended to compare the technical and economic feasibility of syngas generation using the SRI gasification process coupled to several high-temperature gas-cooled reactors (HTGRs) with more traditional HTGR-integrated syngas generation techniques, including: (1) Gasification with high-temperature steam electrolysis (HTSE); (2) Steam methane reforming (SMR); and (3) Gasification with SMR with and without CO2 sequestration.

A.M. Gandrik

2012-04-01T23:59:59.000Z

382

Co-gasification of municipal solid waste and material recovery in a large-scale gasification and melting system  

SciTech Connect

Highlights: Black-Right-Pointing-Pointer This study evaluates the effects of co-gasification of MSW with MSW bottom ash. Black-Right-Pointing-Pointer No significant difference between MSW treatment with and without MSW bottom ash. Black-Right-Pointing-Pointer PCDD/DFs yields are significantly low because of the high carbon conversion ratio. Black-Right-Pointing-Pointer Slag quality is significantly stable and slag contains few hazardous heavy metals. Black-Right-Pointing-Pointer The final landfill amount is reduced and materials are recovered by DMS process. - Abstract: This study evaluates the effects of co-gasification of municipal solid waste with and without the municipal solid waste bottom ash using two large-scale commercial operation plants. From the viewpoint of operation data, there is no significant difference between municipal solid waste treatment with and without the bottom ash. The carbon conversion ratios are as high as 91.7% and 95.3%, respectively and this leads to significantly low PCDD/DFs yields via complete syngas combustion. The gross power generation efficiencies are 18.9% with the bottom ash and 23.0% without municipal solid waste bottom ash, respectively. The effects of the equivalence ratio are also evaluated. With the equivalence ratio increasing, carbon monoxide concentration is decreased, and carbon dioxide and the syngas temperature (top gas temperature) are increased. The carbon conversion ratio is also increased. These tendencies are seen in both modes. Co-gasification using the gasification and melting system (Direct Melting System) has a possibility to recover materials effectively. More than 90% of chlorine is distributed in fly ash. Low-boiling-point heavy metals, such as lead and zinc, are distributed in fly ash at rates of 95.2% and 92.0%, respectively. Most of high-boiling-point heavy metals, such as iron and copper, are distributed in metal. It is also clarified that slag is stable and contains few harmful heavy metals such as lead. Compared with the conventional waste management framework, 85% of the final landfill amount reduction is achieved by co-gasification of municipal solid waste with bottom ash and incombustible residues. These results indicate that the combined production of slag with co-gasification of municipal solid waste with the bottom ash constitutes an ideal approach to environmental conservation and resource recycling.

Tanigaki, Nobuhiro, E-mail: tanigaki.nobuhiro@nsc-eng.co.jp [Nippon Steel Engineering Co., Ltd. (Head Office), Osaki Center Building 1-5-1, Osaki, Shinagawa-ku, Tokyo 141-8604 (Japan); Manako, Kazutaka [Nippon Steel Engineering Co., Ltd., 46-59, Nakabaru, Tobata-ku, Kitakyushu, Fukuoka 804-8505 (Japan); Osada, Morihiro [Nippon Steel Engineering Co., Ltd. (Head Office), Osaki Center Building 1-5-1, Osaki, Shinagawa-ku, Tokyo 141-8604 (Japan)

2012-04-15T23:59:59.000Z

383

Draft Environmental Impact Statement for the Orlando Gasification Project  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

3 3 DRAFT ENVIRONMENTAL IMPACT STATEMENT FOR THE ORLANDO GASIFICATION PROJECT ORLANDO, FLORIDA August 2006 U.S. DEPARTMENT OF ENERGY COVER SHEET August 2006 RESPONSIBLE AGENCY U.S. Department of Energy (DOE) T ITLE Draft Environmental Impact Statement for the Orlando Gasification Project L OCATION Orlando, Florida C ONTACTS Additional copies or information concerning this draft environmental impact statement (EIS) can be obtained from Mr. Richard A. Hargis, Jr., National Environmental Policy Act (NEPA) Document Manager, U.S. Department of Energy, National Energy Technology Laboratory, 626 Cochrans Mill Road, P.O. Box 10940, Pittsburgh, PA 15236-0940. Telephone: 412-386-6065. E-mail: Richard.Hargis@netl.doe.gov. For general information on DOE's NEPA process, contact Ms. Carol M. Borgstrom, Director, Office

384

Techno-Economic Analysis of Biofuels Production Based on Gasification  

NLE Websites -- All DOE Office Websites (Extended Search)

Biofuels Production Based on Biofuels Production Based on Gasification Ryan M. Swanson, Justinus A. Satrio, and Robert C. Brown Iowa State University Alexandru Platon ConocoPhillips Company David D. Hsu National Renewable Energy Laboratory Technical Report NREL/TP-6A20-46587 November 2010 NREL is a national laboratory of the U.S. Department of Energy, Office of Energy Efficiency & Renewable Energy, operated by the Alliance for Sustainable Energy, LLC. National Renewable Energy Laboratory 1617 Cole Boulevard Golden, Colorado 80401 303-275-3000 * www.nrel.gov Contract No. DE-AC36-08GO28308 Techno-Economic Analysis of Biofuels Production Based on Gasification Ryan M. Swanson, Justinus A. Satrio, and Robert C. Brown Iowa State University Alexandru Platon

385

NETL: Gasification Systems - Mitigation of Syngas Cooler Plugging and  

NLE Websites -- All DOE Office Websites (Extended Search)

Mitigation of Syngas Cooler Plugging and Fouling Mitigation of Syngas Cooler Plugging and Fouling Project No.: DE-FE0007952 Reaction Engineering International (REI) is working to develop practical solutions to mitigate the plugging and fouling of syngas coolers (SC) - fire tube heat exchangers located between the coal gasifier and the combustion turbine. Syngas coolers used in Integrated Gasification Combined Cycle (IGCC) plants offer high efficiency, but their reliability is generally lower than other process equipment in the gasification island. The principle downtime events associated with syngas coolers are typically a result of ash deposits that: form on (wall) surfaces upstream of the syngas cooler, break loose, and then lodge in the tubes; or form on the fireside surface of the syngas cooler tubes that lead to fouling and reduced heat transfer. Both ash deposit mechanisms result in reduced equipment life and increased maintenance costs.

386

Environmental Enterprise: Carbon Sequestration using Texaco Power Gasification Process  

NLE Websites -- All DOE Office Websites (Extended Search)

Carbon Sequestration using Texaco Gasification Process Jeff Seabright Arthur Lee Richard Weissman, PhD. Texaco Inc. White Plains, New York Presented at: First National Conference on Carbon Sequestration May 14-17, 2001 Washington D.C. ABSTRACT Coal Integrated Gasification Combined Cycle (IGCC) is a commercially proven clean coal technology that offers significant environmental and economic benefits today, including decreased air and solids emissions. It also offers the potential to capture and sequester carbon dioxide. Coal IGCC provides electric utilities strategic options in meeting today's growing demand for energy products (electricity, fuel, chemicals) while protecting public health and the environment and providing a pathway to zero emissions coal-based power generation.

387

Benefits of Integrating PWR and RTI Advanced Gasification Technologies for  

NLE Websites -- All DOE Office Websites (Extended Search)

Syngas Processing Systems Syngas Processing Systems Benefits of Integrating PWR and RTI Advanced Gasification Technologies for Hydrogen-Rich Syngas Production Research Triangle Institute (RTI) Project Number: FE0012066 Project Description The project will assess the potential for integrated advanced technologies to substantially reduce capital and production costs for hydrogen-rich syngas with near-zero emissions from coal gasification for power production with carbon capture and for coal-to-liquids (specifically methanol) with carbon capture. These integrated technologies include those already tested successfully at pilot-scale with a new and innovative water-gas-shift technology, to show how multiple advanced technologies will leverage each other for significant cost and efficiency gains.

388

NETL: Gasification: Arrowhead Center to Promote Prosperity and Public  

NLE Websites -- All DOE Office Websites (Extended Search)

Gasification Systems - Systems and Industry Analyses Gasification Systems - Systems and Industry Analyses Arrowhead Center to Promote Prosperity and Public Welfare Project Number: DE-FC26-08NT0004397 New Mexico State University The Arrowhead Center to Promote Prosperity and Public Welfare (PROSPER) of the New Mexico State University (NMSU) is conducting research analyzing the relationships between the fossil fuel energy sector and economic development issues in New Mexico. The project is a policy research and economic modeling initiative to enhance fossil fuel energy production and use in New Mexico in an environmentally progressive manner that contributes to the economic development of the state and creates a strong, vibrant economy that better serves the citizens of New Mexico. The project is engaging stakeholders in the research process and assessing (1) the impact

389

Power Systems Development Facility Gasification Test Campaing TC14  

SciTech Connect

In support of technology development to utilize coal for efficient, affordable, and environmentally clean power generation, the Power Systems Development Facility (PSDF) located in Wilsonville, Alabama, routinely demonstrates gasification technologies using various types of coals. The PSDF is an engineering scale demonstration of key features of advanced coal-fired power systems, including a KBR Transport Gasifier, a hot gas particulate control device (PCD), advanced syngas cleanup systems, and high pressure solids handling systems. This report details test campaign TC14 of the PSDF gasification process. TC14 began on February 16, 2004, and lasted until February 28, 2004, accumulating 214 hours of operation using Powder River Basin (PRB) subbituminous coal. The gasifier operating temperatures varied from 1760 to 1810 F at pressures from 188 to 212 psig during steady air blown operations and approximately 160 psig during oxygen blown operations.

Southern Company Services

2004-02-28T23:59:59.000Z

390

Dual-Bed Gasification of Petcoke: Model Development and Validation  

Science Journals Connector (OSTI)

Dual-Bed Gasification of Petcoke: Model Development and Validation ... A series of sensitivity analyses is performed with regard to a conventional gasifier fed by petcoke, and the effects of residence time and oxygen/carbon mass ratio in the feed are investigated over three process variables: char conversion at the gasifier exit, temperature at the gasifier exit, and amount of useful syngas (H2 and CO) produced, in terms of N?m3 per ton of petcoke. ... Different from most literature publications, such as refs 5 and 6, where coal and/or petcoke gasification models are checked against available data, with respect to the syngas composition obtained, and to the process cold gas efficiency, one of the purposes of our paper is to correlate experimental data to a parameter that is important both for simulation and for reactor design: the value of the residence time of the gasifier. ...

Maria Sudiro; Carlos Zanella; Alberto Bertucco; Luigi Bressan; Marco Fontana

2010-01-15T23:59:59.000Z

391

NETL, USDA design coal-stabilized biomass gasification unit  

SciTech Connect

Coal, poultry litter, contaminated corn, rice hulls, moldly hay, manure sludge - these are representative materials that could be tested as fuel feedstocks in a hybrid gasification/combustion concept studied in a recent US Department of Energy (DOE) design project. DOE's National Energy Technology Laboratory (NETL) and the US Department of Agriculture (USDA) collaborated to develop a design concept of a power system that incorporates Hybrid Biomass Gasification. This system would explore the use of a wide range of biomass and agricultural waste products as gasifier feedstocks. The plant, if built, would supply one-third of electrical and steam heating needs at the USDA's Beltsville (Maryland) Agricultural Research Center. 1 fig., 1 photo.

NONE

2008-09-30T23:59:59.000Z

392

Pilot-Plant Gasification of Olive Stone: a Technical Assessment  

Science Journals Connector (OSTI)

This paper presents the results of pilot-plant gasification tests carried out at atmospheric pressure and temperatures within the range of 700?820 °C in order to assess the technical viability of gasifying untreated olive stone, also called “orujillo”, a byproduct of the olive oil industry that comprises both olive stone and pulp. ... Atmospheric air gasification of biomass/waste in a bubbling-fluidized-bed (BFB) reactor is an attractive simple process to convert a solid material to a gaseous fuel. ... Their different characteristics (mainly volatile and ash content) affect the plant operation because of the energy content and the ash fusibility, but both types were gasified efficiently and the problems found were similar. ...

A. Gómez-Barea; R. Arjona; P. Ollero

2004-12-31T23:59:59.000Z

393

Alkaline subcritical water gasification of dairy industry waste (Whey)  

Science Journals Connector (OSTI)

The near-critical water gasification of dairy industry waste in the form of Whey, a product composed of mixtures of carbohydrates (mainly lactose) and amino acids such as glycine and glutamic acid, has been studied. The gasification process involved partial oxidation with hydrogen peroxide in the presence of NaOH. The reactions were studied over the temperature range from 300 °C to 390 °C, corresponding pressures of 9.5–24.5 MPa and reaction times from 0 min to 120 min. Hydrogen production was affected by the presence of NaOH, the concentration of H2O2, temperature, reaction time and feed concentration. Up to 40% of the theoretical hydrogen gas production was achieved at 390 °C. Over 80% of the Whey nitrogen content was found as ammonia, mainly in the liquid effluent.

Rattana Muangrat; Jude A. Onwudili; Paul T. Williams

2011-01-01T23:59:59.000Z

394

CAPITAL AND OPERATING COST OF HYDROGEN PRODUCTION FROM COAL GASIFICATION  

NLE Websites -- All DOE Office Websites (Extended Search)

CAPITAL AND OPERATING COST OF HYDROGEN CAPITAL AND OPERATING COST OF HYDROGEN PRODUCTION FROM COAL GASIFICATION Final Report April 2003 Prepared for: The United States Department of Energy National Energy Technology Laboratory (NETL) under: Contract No. DE-AM26-99FT40465 between the NETL and Concurrent Technologies Corporation (CTC) Subcontract No. 990700362 between CTC and Parsons Infrastructure & Technology Group Inc. Task 50611 DOE Task Managers: James R. Longanbach Gary J. Stiegel Parsons Project Manager: Michael D. Rutkowski Principal Investigators: Thomas L. Buchanan Michael G. Klett Ronald L. Schoff PARSONS Capital and Operating Cost of Hydrogen Production from Coal Gasification Page i April 2003 TABLE OF CONTENTS Section Title Page List of Tables iii List of Figures iii

395

Hydrogen Production from Biomass via Indirect Gasification: The Impact of NREL Process Development Unit Gasifier Correlations  

SciTech Connect

This report describes a set of updated gasifier correlations developed by NREL to predict biomass gasification products and Minimum Hydrogen Selling Price.

Kinchin, C. M.; Bain, R. L.

2009-05-01T23:59:59.000Z

396

E-Print Network 3.0 - allothermal steam gasification Sample Search...  

NLE Websites -- All DOE Office Websites (Extended Search)

and Utilization 79 Reproducedwith pennissionfrom ElsevierPergamon Biomass and Bioenerg..' Vol: 10, :os 2-3, pp..149-l66, 1996 Summary: with gasification have been...

397

Sawdust Pyrolysis and Petroleum Coke CO2 Gasification at High Heating Rates.  

E-Print Network (OSTI)

??Clean and efficient electricity can be generated using an Integrated Gasification Combined Cycle (IGCC). Although IGCC is typically used with coal, it can also be… (more)

Lewis, Aaron D.

2011-01-01T23:59:59.000Z

398

Study of the mechanism of pyrolysis and gasification of Mallee biomass.  

E-Print Network (OSTI)

??Mechanisms of pyrolysis/gasification (steam and carbon dioxide) of mallee biomass were investigated. Wood biochar obtained under slow pyrolysis kept botanical structure but lost its original… (more)

Yang, Yanwu

2012-01-01T23:59:59.000Z

399

Site Characterization, Sustainability Evaluation and Life Cycle Emissions Assessment of Underground Coal Gasification.  

E-Print Network (OSTI)

??Underground Coal Gasification (UCG), although not a new concept, is now attracting considerable global attention as a viable process to provide a âcleanâ and economic… (more)

Hyder, Zeshan

2012-01-01T23:59:59.000Z

400

THERMODYNAMIC MODELLING OF BIOMASS INTEGRATED GASIFICATION COMBINED CYCLE (BIGCC) POWER GENERATION SYSTEM.  

E-Print Network (OSTI)

??An attractive and practicable possibility of biomass utilization for energy production is gasification integrated with a combined cycle. This technology seems to have the possibility… (more)

Desta, Melaku

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "injection catalytic gasification" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

Model-based estimation of adiabatic flame temperature during coal gasification.  

E-Print Network (OSTI)

??Coal gasification temperature distribution in the gasifier is one of the importantissues. High temperature may increase the risk of corrosion of the gasifier wall or… (more)

Sarigul, Ihsan Mert

2012-01-01T23:59:59.000Z

402

CFD Modeling of Biomass Gasification Using a Circulating Fluidized Bed Reactor.  

E-Print Network (OSTI)

??Biomass, as a renewable energy resource, can be utilized to generate chemicals, heat, and electricity. Compared with biomass combustion, biomass gasification is more eco-friendly because… (more)

Liu, Hui

2014-01-01T23:59:59.000Z

403

Technician's Perspective on an Ever-Changing Research Environment: Catalytic Conversion of Biomass to Fuels  

SciTech Connect

The biomass thermochemical conversion platform at the National Renewable Energy Laboratory (NREL) develops and demonstrates processes for the conversion of biomass to fuels and chemicals including gasification, pyrolysis, syngas clean-up, and catalytic synthesis of alcohol and hydrocarbon fuels. In this talk, I will discuss the challenges of being a technician in this type of research environment, including handling and working with catalytic materials and hazardous chemicals, building systems without being given all of the necessary specifications, pushing the limits of the systems through ever-changing experiments, and achieving two-way communication with engineers and supervisors. I will do this by way of two examples from recent research. First, I will describe a unique operate-to-failure experiment in the gasification of chicken litter that resulted in the formation of a solid plug in the gasifier, requiring several technicians to chisel the material out. Second, I will compare and contrast bench scale and pilot scale catalyst research, including instances where both are conducted simultaneously from common upstream equipment. By way of example, I hope to illustrate the importance of researchers 1) understanding the technicians' perspective on tasks, 2) openly communicating among all team members, and 3) knowing when to voice opinions. I believe the examples in this talk will highlight the crucial role of a technical staff: skills attained by years of experience to build and operate research and production systems. The talk will also showcase the responsibilities of NREL technicians and highlight some interesting behind-the-scenes work that makes data generation from NREL's thermochemical process development unit possible.

Thibodeaux, J.; Hensley, J.

2013-01-01T23:59:59.000Z

404

Fluidized bed gasification ash reduction and removal process  

DOE Patents (OSTI)

In a fluidized bed gasification system an ash removal system to reduce the particulate ash to a maximum size or smaller, allow the ash to cool to a temperature lower than the gasifier and remove the ash from the gasifier system. The system consists of a crusher, a container containing level probes and a means for controlling the rotational speed of the crusher based on the level of ash within the container.

Schenone, Carl E. (Madison, PA); Rosinski, Joseph (Vanderbilt, PA)

1984-12-04T23:59:59.000Z

405

Fluidized bed gasification ash reduction and removal system  

DOE Patents (OSTI)

In a fluidized bed gasification system an ash removal system to reduce the particulate ash to a maximum size or smaller, allow the ash to cool to a temperature lower than the gasifier and remove the ash from the gasifier system. The system consists of a crusher, a container containing level probes and a means for controlling the rotational speed of the crusher based on the level of ash within the container.

Schenone, Carl E. (Madison, PA); Rosinski, Joseph (Vanderbilt, PA)

1984-02-28T23:59:59.000Z

406

A study on ultra heavy oil gasification technology  

SciTech Connect

Raising the thermal efficiency of a thermal power plant is an important issue from viewpoints of effective energy utilization and environmental protection. In view of raising the thermal efficiency, a gas turbine combined cycle power generation is considered to be very effective. The thermal efficiency of the latest LNG combined cycle power plant has been raised by more than 50%. On the other hand, the diversification of fuels to ensure supply stability is also an important issue, particularly in Japan where natural resources are scarce. Because of excellent handling characteristics petroleum and LNG which produces clean combustion are used in many sectors, and so the demand for such fuels is expected to grow. However, the availability of such fuels is limited, and supplies will be exhausted in the near future. The development of a highly efficient and environment-friendly gas turbine combined cycle using ultra heavy oil such as Orimulsion{trademark} (trademark of BITOR) is thus a significant step towards resolving these two issues. Chubu Electric Power Co, Inc., the Central Research Institute of Electric Power Industry (CRIEPI), and Mitsubishi Heavy Industries, Ltd. (MHI) conducted a collaboration from 1994 to 1998 with the objective of developing an ultra heavy oil integrated gasification combined cycle (IGCC). Construction of the ultra heavy oil gasification testing facility (fuel capacity:2.4t/d) was completed in 1995, and Orimulsion{trademark} gasification tests were carried out in 1995 and 1996. In 1997, the hot dedusting facility with ceramic filter and the water scrubber used as a preprocessor of a wet desulfurization process were installed. Gasification and clean up the syngs tests were carried out on Orimulsion{trademark}, Asmulsion{trademark} (trademark of Nisseki Mitsubishi K.K.), and residue oil in 1997 and 1998. The results of the collaboration effort are described below.

Kidoguchi, Kazuhiro; Ashizawa, Masami; Taki, Masato; Ishimura, Masato; Takeno, Keiji

2000-07-01T23:59:59.000Z

407

Energy recovery from solid waste fuels using advanced gasification technology  

SciTech Connect

Since the mid-1980s, TPS Termiska Processer AB has been working on the development of an atmospheric-pressure gasification process. A major aim at the start of this work was the generation of fuel gas from indigenous fuels to Sweden (i.e. biomass). As the economic climate changed and awareness of the damage to the environment caused by the use of fossil fuels in power generation equipment increased, the aim of the development work at TPS was changed to applying the process to heat and power generation from feedstocks such as biomass and solid wastes. Compared with modern waste incineration with heat recovery, the gasification process will permit an increase in electricity output of up to 50%. The gasification process being developed is based on an atmospheric-pressure circulating fluidized bed gasifier coupled to a tar-cracking vessel. The gas produced from this process is then cooled and cleaned in conventional equipment. The energy-rich gas produced is clean enough to be fired in a gas boiler without requiring extensive flue gas cleaning, as is normally required in conventional waste incineration plants. Producing clean fuel gas in this manner, which facilitates the use of efficient gas-fired boilers, means that overall plant electrical efficiencies of close to 30% can be achieved. TPS has performed a considerable amount of pilot plant testing on waste fuels in their gasification/gas cleaning pilot plant in Sweden. Two gasifiers of TPS design have been in operation in Greve-in-Chianti, italy since 1992. This plant processes 200 tonnes of RDF (refuse-derived fuel) per day.

Morris, M.; Waldheim, L. [TPS Termiska Processer AB, Nykoeping (Sweden)] [TPS Termiska Processer AB, Nykoeping (Sweden)

1998-12-31T23:59:59.000Z

408

Gasification of New Zealand coals: a comparative simulation study  

SciTech Connect

The aim of this study was to conduct a preliminary feasibility assessment of gasification of New Zealand (NZ) lignite and sub-bituminous coals, using a commercial simulation tool. Gasification of these coals was simulated in an integrated gasification combined cycle (IGCC) application and associated preliminary economics compared. A simple method of coal characterization was developed for simulation purposes. The carbon, hydrogen, and oxygen content of the coal was represented by a three component vapor solid system of carbon, methane, and water, the composition of which was derived from proximate analysis data on fixed carbon and volatile matter, and the gross calorific value, both on a dry, ash free basis. The gasification process was modeled using Gibb's free energy minimization. Data from the U.S. Department of Energy's Shell Gasifier base cases using Illinios No. 6 coal was used to verify both the gasifier and the IGCC flowsheet models. The H:C and O:C ratios of the NZ coals were adjusted until the simulated gasifier output composition and temperature matched the values with the base case. The IGCC power output and other key operating variables such as gas turbine inlet and exhaust temperatures were kept constant for study of comparative economics. The results indicated that 16% more lignite than sub-bituminous coal was required. This translated into the requirement of a larger gasifier and air separation unit, but smaller gas and steam turbines were required. The gasifier was the largest sole contributor (30%) to the estimated capital cost of the IGCC plant. The overall cost differential associated with the processing of lignite versus processing sub-bituminous coal was estimated to be of the order of NZ $0.8/tonne. 13 refs., 9 tabs.

Smitha V. Nathen; Robert D. Kirkpatrick; Brent R. Young [University of Auckland, Auckland (New Zealand). Department of Chemical and Materials Engineering

2008-07-15T23:59:59.000Z

409

Use of Biomass Gasification Fly Ash in Lightweight Plasterboard  

Science Journals Connector (OSTI)

In addition, the overall environmental benefit of waste gasification plus ash utilization of a difficult fly ash makes the overall process attractive. ... Only the Autonomous Government of Catalonia has established regional regulations for waste management, including limited recycling for some wastes considered as byproducts. ... viability of gasifying untreated olive stone, also called "orujillo", a byproduct of the olive oil industry that comprises both olive stone and pulp. ...

C. Leiva; A. Gómez-Barea; L. F. Vilches; P. Ollero; J. Vale; C. Fernández-Pereira

2006-11-24T23:59:59.000Z

410

Gasification of Model Compounds and Wood in Hot Compressed Water  

Science Journals Connector (OSTI)

Examples of wet waste streams include the following:? vegetable, fruit and garden waste; waste streams from agricultural, food and beverage industries; manure; sewage sludge; and some household wastes. ... Lignin itself is difficult to gasify and it has been observed that lignin blocks the conversion of wood's other constituents:? cellulose and hemi-cellulose. ... The raw biomass feedstock of sawdust with some CMC was also gasified in this system, the gasification efficiency in excess of 95% was reached. ...

Sascha R. A. Kersten; Biljana Potic; Wolter Prins; Wim P. M. Van Swaaij

2006-05-12T23:59:59.000Z

411

Using gasification as a reliable source of fuel  

SciTech Connect

The low cost and ready availability of coal has brought about a renewed interest in the gasification process. A new two-stage fixed-bed gasifier is presented as a reliable and economical source of industrial fuels. The relative heating value of low-Btu gas is compared with other fuels, and applications in the pulp and paper industry are discussed, along with a cash flow analysis of a sample installation.

Coffeen, W.G.

1983-02-01T23:59:59.000Z

412

Catalytic Device International LLC | Open Energy Information  

Open Energy Info (EERE)

Catalytic Device International LLC Catalytic Device International LLC Jump to: navigation, search Name Catalytic Device International LLC Place Pleasanton, California Product California-based, firm focused on portable, heat-on-demand products. References Catalytic Device International LLC[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Catalytic Device International LLC is a company located in Pleasanton, California . References ↑ "Catalytic Device International LLC" Retrieved from "http://en.openei.org/w/index.php?title=Catalytic_Device_International_LLC&oldid=343285" Categories: Clean Energy Organizations Companies Organizations Stubs What links here Related changes Special pages

413

Treatment of Mixed Wastes via Fixed Bed Gasification  

SciTech Connect

This report outlines the details of research performed under USDOE Cooperative Agreement DE-FC21-96MC33258 to evaluate the ChemChar hazardous waste system for the destruction of mixed wastes, defined as those that contain both RCRA-regulated haz- ardous constituents and radionuclides. The ChemChar gasification system uses a granular carbonaceous char matrix to immobilize wastes and feed them into the gasifier. In the gasifier wastes are subjected to high temperature reducing conditions, which destroy the organic constituents and immobilize radionuclides on the regenerated char. Only about 10 percent of the char is consumed on each pass through the gasifier, and the regenerated char can be used to treat additional wastes. When tested on a 4-inch diameter scale with a continuous feed unit as part of this research, the ChemChar gasification system was found to be effective in destroying RCRA surrogate organic wastes (chlorobenzene, dichloroben- zene, and napht.halene) while retaining on the char RCRA heavy metals (chromium, nickel, lead, and cadmium) as well as a fission product surrogate (cesium) and a plutonium surrogate (cerium). No generation of harmful byproducts was observed. This report describes the design and testing of the ChemChar gasification system and gives the operating procedures to be followed in using the system safely and effectively for mixed waste treatment.

None

1998-10-28T23:59:59.000Z

414

Incineration versus gasification: A comparison in waste to energy plants  

SciTech Connect

Waste thermodestruction has obvious advantages; nevertheless, it encounters problems not very easy to solve, such as those related to gas cleaning and to restricting standards for emission control. One important aspect is the possibility of heat recovery with production of valuable energy such as electric energy. A new technology, at least as far as its application to waste disposal (mainly municipal waste) is concerned, is represented by gasification. It becomes interesting to establish a comparison between this new technology and the traditional one. This comparison does not appear, however, to be very simple, since for gasification only few documented experiments can be found, and these are often difficult to relate to a common evaluation factor. The present paper describes the state of the art of the traditional technology in the thermodestruction field to define a comparison basis. Then, a general discussion is given for the gasification technology, emphasizing different possible solutions to allow for a quantitative evaluation. At last the various aspects of the problem (related to plant, environment, energy, economics, etc.) are specifically compared for the purpose of finding elements which allow for a quantitative evaluation or for emphasizing parameters useful for a final choice.

Ghezzi, U.; Pasini, S.; Ferri, L.D.A. [Politecnico di Milano (Italy). Dipt. di Energetica

1995-12-31T23:59:59.000Z

415

Power Systems Development Facility Gasification Test Campaing TC18  

SciTech Connect

In support of technology development to utilize coal for efficient, affordable, and environmentally clean power generation, the Power Systems Development Facility (PSDF) located in Wilsonville, Alabama, routinely demonstrates gasification technologies using various types of coals. The PSDF is an engineering scale demonstration of key features of advanced coal-fired power systems, including a KBR Transport Gasifier, a hot gas particulate control device (PCD), advanced syngas cleanup systems, and high pressure solids handling systems. This report details Test Campaign TC18 of the PSDF gasification process. Test campaign TC18 began on June 23, 2005, and ended on August 22, 2005, with the gasifier train accumulating 1,342 hours of operation using Powder River Basin (PRB) subbituminous coal. Some of the testing conducted included commissioning of a new recycle syngas compressor for gasifier aeration, evaluation of PCD filter elements and failsafes, testing of gas cleanup technologies, and further evaluation of solids handling equipment. At the conclusion of TC18, the PSDF gasification process had been operated for more than 7,750 hours.

Southern Company Services

2005-08-31T23:59:59.000Z

416

Crystalline structure transformation of carbon anodes during gasification  

SciTech Connect

The crystalline structure transformation of five carbon anodes during gasification in air and carbon dioxide was studied using quantitative X-ray diffraction (XRD) analysis and high-resolution transmission electron microscopy (HRTEM). XRD analysis and HRTEM observations confirmed that anodes have a highly ordered graphitic structure. The examination of partially gasified samples indicated that crystalline structure transformation occurred in two stages during gasification. The first stage involved the consumption of disorganized carbon matter in the initial 15% conversion. Oxygen was found to be more reactive toward disorganized carbon at this stage of the gasification process compared to carbon dioxide. Following this stage, as more carbon was consumed, especially with the removal of smaller crystallites, it was found that the crystalline structure became more ordered with increasing conversion levels. This is due to the merging of neighboring crystallites, required to maintain the minimum energy configuration. In addition, the interaction between the pitch and the coke components was found to be strongly linked to the initial coke structure. 'Stress graphitization' occurred at the pitch-coke interface, which helps to enhance the structural development of the anodes. 26 refs., 9 figs., 3 tabs.

Kien N. Tran; Adam J. Berkovich; Alan Tomsett; Suresh K. Bhatia [University of Queensland, St. Lucia, Qld. (Australia). Division of Chemical Engineering

2008-05-15T23:59:59.000Z

417

Power Systems Development Facility Gasification Test Campaign TC17  

SciTech Connect

In support of technology development to utilize coal for efficient, affordable, and environmentally clean power generation, the Power Systems Development Facility (PSDF) located in Wilsonville, Alabama, routinely demonstrates gasification technologies using various types of coals. The PSDF is an engineering scale demonstration of key features of advanced coal-fired power systems, including a KBR (formerly Kellogg Brown & Root) Transport Gasifier, a hot gas particulate control device, advanced syngas cleanup systems, and high-pressure solids handling systems. This report summarizes the results gasification operation with Illinois Basin bituminous coal in PSDF test campaign TC17. The test campaign was completed from October 25, 2004, to November 18, 2004. System startup and initial operation was accomplished with Powder River Basin (PRB) subbituminous coal, and then the system was transitioned to Illinois Basin coal operation. The major objective for this test was to evaluate the PSDF gasification process operational stability and performance using the Illinois Basin coal. The Transport Gasifier train was operated for 92 hours using PRB coal and for 221 hours using Illinois Basin coal.

Southern Company Services

2004-11-30T23:59:59.000Z

418

Co-gasification of Biomass and Non-biomass Feedstocks: Synergistic and Inhibition Effects of Switchgrass Mixed with Sub-bituminous Coal and Fluid Coke During CO2 Gasification  

Science Journals Connector (OSTI)

Co-gasification of biomass, namely, switchgrass, with coal and fluid coke was performed to investigate the availability of the gasification catalysts to the mixed feedstock, especially alkali and alkaline earth elements, naturally present on switchgrass. ...

Rozita Habibi; Jan Kopyscinski; Mohammad S. Masnadi; Jill Lam; John R. Grace; Charles A. Mims; Josephine M. Hill

2012-11-21T23:59:59.000Z

419

Effects of Feed Composition and Gasification Parameters on Product Gas from a Pilot Scale Fluidized Bed Gasifier.  

E-Print Network (OSTI)

??Biomass gasification is an integral part of a holistic project where low-value feedstocks are converted into ethanol via a gasification-fermentation process. Because microbial catalysts are… (more)

Cateni, Bruno Ghislain

2007-01-01T23:59:59.000Z

420

CX-005329: Categorical Exclusion Determination | Department of...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Fluid-Bed Testing of GreatPoint Energy's Direct Oxygen Injection Catalytic Gasification Process CX(s) Applied: B3.6 Date: 02282011 Location(s): Grand Forks, North Dakota...

Note: This page contains sample records for the topic "injection catalytic gasification" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

CX-002899: Categorical Exclusion Determination | Department of...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Fluid-Bed Testing of Greatpoint Energy's Direct Oxygen Injection Catalytic Gasification Process CX(s) Applied: B3.6 Date: 07082010 Location(s): Grand Forks, North Dakota...

422

Assessment of Gasification-Based Biorefining at Kraft Pulp and Paper Mills in the United States, Part A: Background and Assumptions  

SciTech Connect

Commercialization of black liquor and biomass gasification technologies is anticipated in the 2010-2015 time frame, and synthesis gas from gasifiers can be converted into liquid fuels using catalytic synthesis technologies that are already commercially established in the gas-to-liquids or coal-to-liquids industries. This set of two papers describes key results from a major assessment of the prospective energy, environmental, and financial performance of commercial gasification-based biorefineries integrated with kraft pulp and paper mills [1]. Seven detailed biorefinery designs were developed for a reference mill in the southeastern United States, together with the associated mass/energy balances, air emissions estimates, and capital investment requirements. The biorefineries provide chemical recovery services and co-produce process steam for the mill, some electricity, and one of three liquid fuels: a Fischer-Tropsch synthetic crude oil (which could be refined to vehicle fuels at an existing petroleum refinery), dimethyl ether (a diesel engine fuel or propane substitute), or an ethanol-rich mixed-alcohol product. This paper describes the key assumptions that underlie the biorefinery designs. Part B will present analytical results.

Larson, E. D.; Consonni, S.; Katofsky, R. E.; Iisa, K.; Frederick, W. J., Jr.

2008-11-01T23:59:59.000Z

423

Development of an Integrated Multicontaminant Removal Process Applied to Warm Syngas Cleanup for Coal-Based Advanced Gasification Systems  

NLE Websites -- All DOE Office Websites (Extended Search)

an Integrated an Integrated Multicontaminant Removal Process Applied to Warm Syngas Cleanup for Coal-Based Advanced Gasification Systems Background The U.S. has more coal than any other country, and it can be converted through gasification into electricity, liquid fuels, chemicals, or hydrogen. However, for coal gasification to become sufficiently competitive to benefit the U.S. economy and help reduce our dependence on foreign fuels, gasification costs must be reduced

424

Activated Carbon Injection  

ScienceCinema (OSTI)

History of the Clean Air Act and how the injection of carbon into a coal power plant's flu smoke can reduce the amount of mercury in the smoke.

None

2014-07-22T23:59:59.000Z

425

Underground Injection Control (Louisiana)  

Energy.gov (U.S. Department of Energy (DOE))

The Injection and Mining Division (IMD) has the responsibility of implementing two major federal environmental programs which were statutorily charged to the Office of Conservation: the Underground...

426

NEUTRAL-BEAM INJECTION  

E-Print Network (OSTI)

energy, coming from an electron source, are injected intodischarges. In an electron bombardment source electrons ofsimply called electron bombardment sources (Kaufman, 1974).

Kunkel, W.B.

2012-01-01T23:59:59.000Z

427

Activated Carbon Injection  

SciTech Connect

History of the Clean Air Act and how the injection of carbon into a coal power plant's flu smoke can reduce the amount of mercury in the smoke.

None

2014-07-16T23:59:59.000Z

428

Mathematical Modeling of Coal Gasification Processes in a Well-Stirred Reactor: Effects of Devolatilization and Moisture Content  

E-Print Network (OSTI)

Mathematical Modeling of Coal Gasification Processes in a Well- Stirred Reactor: Effects in coal and biomass play an important role on the gasification performance of these fuels to simulate the gasification processes in a well-stirred reactor. This model is a first

Qiao, Li

429

Development of an advanced, continuous mild gasification process for the production of co-products: Topical report  

SciTech Connect

Research on mild gasification is discussed. The report is divided into three sections: literature survey of mild gasification processes; literature survey of char, condensibles, and gas upgrading and utilization methods; and industrial market assessment of products of mild gasification. Recommendations are included in each section. (CBS) 248 refs., 58 figs., 62 tabs.

Cha, C.Y.; Merriam, N.W.; Jha, M.C.; Breault, R.W.

1988-06-01T23:59:59.000Z

430

Gasification behavior of carbon residue in bed solids of black liquor gasifier  

SciTech Connect

Steam gasification of carbon residue in bed solids of a low-temperature black liquor gasifier was studied using a thermogravimetric system at 3 bar. Complete gasification of the carbon residue, which remained unreactive at 600 C, was achieved in about 10 min as the temperature increased to 800 C. The rate of gasification and its temperature dependence were evaluated from the non-isothermal experiment results. Effects of particle size and adding H{sub 2} and CO to the gasification agent were also studied. The rate of steam gasification could be taken as zero order in carbon until 80% of carbon was gasified, and for the rest of the gasification process the rate appeared to be first order in carbon. The maximum rate of carbon conversion was around 0.003/s and the activation energy was estimated to be in the range of 230-300 kJ/mol. The particle size did not show significant effect on the rate of gasification. Hydrogen and carbon monoxide appeared to retard the onset of the gasification process. (author)

Preto, Fernando; Zhang, Xiaojie (Frank); Wang, Jinsheng [CANMET Energy Technology Centre, Natural Resources (Canada)

2008-07-15T23:59:59.000Z

431

Underground Gasification of Coal in the U.S.S.R  

Science Journals Connector (OSTI)

... S.S.R., however, the first practical work was begun in 1933 on the gasification of the coal in tlie seam. This is reached by two shafts connected by ... necessitates the labour of miners to sink the shafts and to tunnel the seam before gasification can begin. In a new installation in the Donetz coalfield, the seam will be ...

1941-04-19T23:59:59.000Z

432

Case-study of a coal gasification-based energy supply system for China  

E-Print Network (OSTI)

clean fuels derived via coal gasification. Emissions of air pollutants in the SC scenario are compared polygeneration technologies to meet energy needs of coal-rich areas. Polygeneration systems, based on coalCase-study of a coal gasification-based energy supply system for China Zheng Hongtao Department

433

Instrumentation and Evaluation of a Pilot Scale Fluidized Bed Biomass Gasification System  

E-Print Network (OSTI)

temperature and pressure profile .................................. 24 Figure 14 Woodchips temperature and pressure profile .................................... 24 Figure 15 Gasification efficiency and reaction temperature, Tr vs the oxygen... Page Table 1 Modules used for CompactDAQ. ...................................................... 11 Table 2 Bulk density and loading factor ........................................................ 18 Table 3 Sample gasification data readings...

Maglinao, Amado L

2009-12-04T23:59:59.000Z

434

Gasification kinetics of six eastern shales in steam and synthesis gas atmospheres  

SciTech Connect

Gasification reactivities have been determined for six Eastern shales with conversions described by a model incorporating fast and slow gasification reactions. A simple model, based on Indiana New Albany shale, was developed to describe the fast and slow weight loss as well as the slow sulfur and organic carbon gasification rates. The slow sulfur and organic carbon reactions are described by rate equations that are first order in sulfur and organic carbon and include the steam pressure. Terms in the organic carbon rate expression account for hydrogen and carbon monoxide inhibition of the steam-carbon reaction. The fraction of shale species lost by fast and slow gasification and the rate of slow sulfur gasification are similar (and assumed to be equal) for the six Eastern shales studied. Eastern shale organic carbon reactivities are different and have been described with different kinetic parameters in the slow organic carbon gasification rate equation. The kinetic expressions developed for Eastern shale gasification are valid in steam and steam; synthesis gas mixtures and for residence times of more than 3 minutes. Gasification is described for temperature and pressure ranges of 1144 to 1311 K and 0.20 to 3.55 MPa, respectively.

Rue, D.M.; Lau, F.S. (Institute of Gas Technology, Chicago, IL (USA))

1989-03-01T23:59:59.000Z

435

Effect of Iron Species and Calcium Hydroxide on High-Sulfur Petroleum Coke CO2 Gasification  

Science Journals Connector (OSTI)

The effect of iron species on petroleum coke CO2 gasification was studied in the present work. The effects of the temperature (1173–1673 K), the catalyst types, catalyst loading (ranging from 0 to 5 wt %), and composition during the gasification of ...

Zhi-jie Zhou; Qi-jing Hu; Xin Liu; Guang-suo Yu; Fu-chen Wang

2012-01-24T23:59:59.000Z

436

MODELLING THE LOW-TAR BIG GASIFICATION CONCEPT Lars Andersen, Brian Elmegaard, Bjrn Qvale, Ulrik Henriksen  

E-Print Network (OSTI)

and gasification chamber are bubbling fluid beds, fluidised with steam. For moist fuels, the gasifier can be integrated with a steam drying process, where the produced steam is used in the pyrolysis plant systems: Gas engine, Simple cycle gas turbine, Recuperated gas turbine and Integrated Gasification

437

Modeling and Optimization of Membrane Reactors for Carbon Capture in Integrated Gasification Combined Cycle Units  

Science Journals Connector (OSTI)

Modeling and Optimization of Membrane Reactors for Carbon Capture in Integrated Gasification Combined Cycle Units ... This paper investigates the alternative of precombustion capture of carbon dioxide from integrated gasification combined cycle (IGCC) plants using membrane reactors equipped with H2-selective zeolite membranes for the water gas shift reaction. ...

Fernando V. Lima; Prodromos Daoutidis; Michael Tsapatsis; John J. Marano

2012-03-08T23:59:59.000Z

438

Transformation of Alkali Metals during Pyrolysis and Gasification of a Lignite  

Science Journals Connector (OSTI)

North China has large reserves of low rank coal deposits such as lignite that are suitable to be used in fluidized-bed gasification. ... Influence of Temperature on the Release of Inorganic Species from Victorian Brown Coals and German Lignites under CO2 Gasification Conditions ...

Xiaofang Wei; Jiejie Huang; Tiefeng Liu; Yitian Fang; Yang Wang

2008-04-17T23:59:59.000Z

439

Opening New Avenues for High-Efficiency, Low-Emission Coal Gasification |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Opening New Avenues for High-Efficiency, Low-Emission Coal Opening New Avenues for High-Efficiency, Low-Emission Coal Gasification Opening New Avenues for High-Efficiency, Low-Emission Coal Gasification April 10, 2012 - 1:00pm Addthis A rendering of the Pratt & Whitney Rocketdyne high pressure, dry-solids feed pump. A rendering of the Pratt & Whitney Rocketdyne high pressure, dry-solids feed pump. Washington, DC - Gasification. It's a versatile technology that uses coal to produce power, chemicals, and fuels. Inherently low in air emissions, solid byproducts, and wastewater, commercial gasification plants have proven capable of exceeding the most stringent regulations for air- and solids-emissions. However, capital and operational costs have prohibited the widespread adoption of gasification, especially for power

440

Analysis of the energy efficiency of solar aided biomass gasification for pure hydrogen production  

Science Journals Connector (OSTI)

Abstract This paper presents a simulative analysis of the energy efficiency of solar aided biomass gasification for pure hydrogen production. Solar heat has been considered as available at 250 °C in three gasification processes: i) gasification reactor followed by two water gas shift reactors and a pressure swing adsorber; ii) gasification reactor followed by an integrated membrane water gas shift reactor; iii) supercritical gasification reactor followed by two flash separators and a pressure swing adsorber. Simulations are performed with the commercial software Aspen Plus® by considering biomass moisture content and the amount of solar heat as system variables. Results are presented in terms of energy and exergy system efficiency and are discussed and compared with the case of no solar integration.

Lucia Salemme; Marino Simeone; Riccardo Chirone; Piero Salatino

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "injection catalytic gasification" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

Computational fluid dynamics modeling of coal gasification in a pressurized spout-fluid bed  

SciTech Connect

Computational fluid dynamics (CFD) modeling, which has recently proven to be an effective means of analysis and optimization of energy-conversion processes, has been extended to coal gasification in this paper. A 3D mathematical model has been developed to simulate the coal gasification process in a pressurized spout-fluid bed. This CFD model is composed of gas-solid hydrodynamics, coal pyrolysis, char gasification, and gas phase reaction submodels. The rates of heterogeneous reactions are determined by combining Arrhenius rate and diffusion rate. The homogeneous reactions of gas phase can be treated as secondary reactions. A comparison of the calculated and experimental data shows that most gasification performance parameters can be predicted accurately. This good agreement indicates that CFD modeling can be used for complex fluidized beds coal gasification processes. 37 refs., 7 figs., 5 tabs.

Zhongyi Deng; Rui Xiao; Baosheng Jin; He Huang; Laihong Shen; Qilei Song; Qianjun Li [Southeast University, Nanjing (China). Key Laboratory of Clean Coal Power Generation and Combustion Technology of Ministry of Education

2008-05-15T23:59:59.000Z

442

Bifunctional Catalysts for the Selective Catalytic Reduction...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

for the Selective Catalytic Reduction of NO by Hydrocarbons Development of Optimal Catalyst Designs and Operating Strategies for Lean NOx Reduction in Coupled LNT-SCR Systems...

443

Synthesis, Characterization, and Catalytic Function of Novel...  

NLE Websites -- All DOE Office Websites (Extended Search)

Function of Novel Highly Dispersed Tungsten Oxide Catalysts on Mesoporous Silica . Synthesis, Characterization, and Catalytic Function of Novel Highly Dispersed Tungsten Oxide...

444

Chemical Processing in High-Pressure Aqueous Environments. 9. Process Development for Catalytic Gasification of Algae Feedstocks  

Science Journals Connector (OSTI)

(5) It has been reported both as a means of recovering useful energy from wet organic wastes and as a water treatment system for wet organic contaminants. ... The off-gas was measured by a wet test meter and analyzed by a gas chromatograph. ... Trace metal grade (subppb) acids and two independently NIST-certified calibration standard sets were used for calibration and method verification. ...

Douglas C. Elliott; Todd R. Hart; Gary G. Neuenschwander; Leslie J. Rotness; Mariefel V. Olarte; Alan H. Zacher

2012-07-26T23:59:59.000Z

445

Energy Efficient Production of Hydrogen and Syngas from Biomass:? Development of Low-Temperature Catalytic Process for Cellulose Gasification  

Science Journals Connector (OSTI)

Actually, the syngas production is the key step to produce such super clean liquid fuels. ... Today's corn refinery industry produces a wide range of products including starch-based ethanol fuels for transportation. ... On a catalyst with suitable reducibility, the oxidized catalyst can be reduced with the produced syngas and the reforming activity regenerates in the fluidized bed reactor. ...

Mohammad Asadullah; Shin-ichi Ito; Kimio Kunimori; Muneyoshi Yamada; Keiichi Tomishige

2002-09-10T23:59:59.000Z

446

Power Systems Development Facility Gasification Test Campaign TC24  

SciTech Connect

In support of technology development to utilize coal for efficient, affordable, and environmentally clean power generation, the Power Systems Development Facility (PSDF), located in Wilsonville, Alabama, routinely demonstrates gasification technologies using various types of coals. The PSDF is an engineering scale demonstration of key features of advanced coal-fired power systems, including a KBR Transport Gasifier, a hot gas particulate control device, advanced syngas cleanup systems, and high-pressure solids handling systems. This report summarizes the results of TC24, the first test campaign using a bituminous coal as the feedstock in the modified Transport Gasifier configuration. TC24 was conducted from February 16, 2008, through March 19, 2008. The PSDF gasification process operated for about 230 hours in air-blown gasification mode with about 225 tons of Utah bituminous coal feed. Operational challenges in gasifier operation were related to particle agglomeration, a large percentage of oversize coal particles, low overall gasifier solids collection efficiency, and refractory degradation in the gasifier solids collection unit. The carbon conversion and syngas heating values varied widely, with low values obtained during periods of low gasifier operating temperature. Despite the operating difficulties, several periods of steady state operation were achieved, which provided useful data for future testing. TC24 operation afforded the opportunity for testing of various types of technologies, including dry coal feeding with a developmental feeder, the Pressure Decoupled Advanced Coal (PDAC) feeder; evaluating a new hot gas filter element media configuration; and enhancing syngas cleanup with water-gas shift catalysts. During TC24, the PSDF site was also made available for testing of the National Energy Technology Laboratory's fuel cell module and Media Process Technology's hydrogen selective membrane.

Southern Company Services

2008-03-30T23:59:59.000Z

447

"Integrated Gasification Combined Cycle"  

U.S. Energy Information Administration (EIA) Indexed Site

Status of technologies and components modeled by EIA" Status of technologies and components modeled by EIA" ,"Revolutionary","Evolutionary","Mature" "Pulverized Coal",,,"X" "Pulverized Coal with CCS" " - Non-CCS portion of Pulverized Coal Plant",,,"X" " - CCS","X" "Integrated Gasification Combined Cycle" " - Advanced Combustion Turbine",,"X" " - Heat Recovery Steam Generator",,,"X" " - Gasifier",,"X" " - Balance of Plant",,,"X" "Conventional Natural Gas Combined Cycle" " - Conventional Combustion Turbine",,,"X" " - Heat Recovery Steam Generator",,,"X" " - Balance of Plant",,,"X"

448

Automobile Shredder Residue (ASR) destruction in a plasma gasification reactor  

Science Journals Connector (OSTI)

Test results on Automobile Shredder Residue (ASR), or car fluff, demonstrated destruction efficiency and safe conversion to synthesis gas and a glass residue, in a plasma gasification system. The synthesis gas consists primarily of hydrogen and carbon monoxide in the range between 20 and 22 vol-% respectively, or 45 and 55 vol-% dry basis, when corrected for nitrogen. In dry reforming operation, carbon dioxide conversion approached 90%. The system is designed to work with oxygen in autothermal conditions, reducing thus the electric power requirement for the plasma reactor. The vitrified residue leach rate makes the product suitable for construction works.

Marco G. Tellini; Paolo Centola; James A. Batdorf; William J. Quapp

2007-01-01T23:59:59.000Z

449

Mississippi Ethanol Gasification Project, Final Scientific / Technical Report  

SciTech Connect

The Mississippi Ethanol (ME) Project is a comprehensive effort to develop the conversion of biomass to ethanol utilizing a proprietary gasification reactor technology developed by Mississippi Ethanol, LLC. Tasks were split between operation of a 1/10 scale unit at the Diagnostic Instrumentation and Analysis Laboratory (DIAL) of Mississippi State University (MSU) and the construction, development, and operation of a full scale pilot unit located at the ME facility in Winona, Mississippi. In addition to characterization of the ME reactor gasification system, other areas considered critical to the operational and economic viability of the overall ME concept were evaluated. These areas include syngas cleanup, biological conversion of syngas to alcohol, and effects of gasification scale factors. Characterization of run data from the Pre-Pilot and Pilot Units has allowed development of the factors necessary for scale-up from the small unit to the larger unit. This scale range is approximately a factor of 10. Particulate and tar sampling gave order of magnitude values for preliminary design calculations. In addition, sampling values collected downstream of the ash removal system show significant reductions in observed loadings. These loading values indicate that acceptable particulate and tar loading rates could be attained with standard equipment additions to the existing configurations. Overall operation both the Pre-Pilot and Pilot Units proceeded very well. The Pilot Unit was operated as a system, from wood receiving to gas flaring, several times and these runs were used to address possible production-scale concerns. Among these, a pressure feed system was developed to allow feed of material against gasifier system pressure with little or no purge requirements. Similarly, a water wash system, with continuous ash collection, was developed, installed, and tested. Development of a biological system for alcohol production was conducted at Mississippi State University with much progress. However, the current state of biological technology is not deemed to be ready commercially. A preliminary estimate of capital and operating costs of a 12000 gallon per day gasification/biological facility was developed for comparison purposes. In addition, during the biological organism screening and testing, some possible alternative products were identified. One such possibility is the biological production of bio-diesel. Additional research is necessary for further evaluation of all of the biological concepts.

Pearson, Larry, E.

2007-04-30T23:59:59.000Z

450

Development of Foster Wheeler's Vision 21 Partial Gasification Module  

SciTech Connect

The US Department of Energy (DOE) has awarded Foster Wheeler Development Corporation a contract to develop a partial gasification module (PGM) that represents a critical element of several potential coal-fired Vision 21 plants. When utilized for electrical power generation, these plants will operate with efficiencies greater than 60% while producing near zero emissions of traditional stack gas pollutants. The new process partially gasifies coal at elevated pressure producing a coal derived syngas and a char residue. The syngas can be used to fuel the most advanced power producing equipment such as solid oxide fuel cells or gas turbines or processed to produce clean liquid fuels or chemicals for industrial users. The char residue is not wasted; it can also be used to generate electricity by fueling boilers that drive the most advanced ultra-supercritical pressure steam turbines. The unique aspect of the process is that it utilizes a pressurized circulating fluidized bed partial gasifier and does not attempt to consume the coal in a single step. To convert all the coal to syngas in a single step requires extremely high temperatures ({approx} 2500 to 2800F) that melt and vaporize the coal and essentially drive all coal ash contaminants into the syngas. Since these contaminants can be corrosive to power generating equipment, the syngas must be cooled to near room temperature to enable a series of chemical processes to clean the syngas. Foster Wheeler's process operates at much lower temperatures that control/minimize the release of contaminants; this eliminates/minimizes the need for the expensive, complicated syngas heat exchangers and chemical cleanup systems typical of high temperature gasification. By performing the gasification in a circulating bed, a significant amount of syngas can still be produced despite the reduced temperature and the circulating bed allows easy scale up to large size plants. Rather than air, it can also operate with oxygen to facilitate sequestration of stack gas carbon dioxide gases for a 100% reduction in greenhouse gas emissions. The amount of syngas and char produced by the PGM can be tailored to fit the production objectives of the overall plant, i.e., power generation, clean liquid fuel production, chemicals production, etc. Hence, PGM is a robust building block that offers all the advantages of coal gasification but in a more user friendly form; it is also fuel flexible in that it can use alternative fuels such as biomass, sewerage sludge, etc. This paper describes the test program and pilot plant that will be used to develop the PGM.

Robertson, A.

2001-11-06T23:59:59.000Z

451

The SEI facility for fluid-bed wood gasification  

SciTech Connect

In mid 1985, construction was begun on the world's largest fluidized bed, wood gasification plant at the clay processing plant in Quincy, Fla. In March 1986, the plant was purchased by Southern Electric International (SEI). This paper describes how SEI coordinated the redesign of many of the plant systems and supervised the completion of construction and startup. In late 1986, the gasifier plant was sold. SEI remains involved as the operations and maintenance contractor on-site and is now responsible for design changes and equipment maintenance.

Bullpitt, W.S.; Rittenhouse, O.C. (Southern Electric International, Inc. North Atlanta, GA (US)); Masterson, L.D. (Southern Electric International Quincy, FL (US))

1989-09-01T23:59:59.000Z

452

Gasification of New Zealand Coals: A Comparative Simulation Study  

Science Journals Connector (OSTI)

The aim of this study was to conduct a preliminary feasibility assessment of gasification of New Zealand (NZ) lignite and sub-bituminous coals, using a commercial simulation tool. ... Coal is a nonrenewable resource; however, the world’s coal reserves amount to twice the combined oil and gas reserves. ... The reasons for the entrained flow gasifier selection include its high suitability to low rank coals (lignites) and the use of entrained flow gasifiers for an IGCC as the industrially preferred choice dictated through experience. ...

Smitha V. Nathen; Robert D. Kirkpatrick; Brent R. Young

2008-06-10T23:59:59.000Z

453

Catalytic steam reforming of hydrocarbons  

SciTech Connect

The hot effluent from the catalytic steam reforming of a major portion of a fluid hydrocarbon feed stream in the reformer tubes of a primary reformer, or said effluent after secondary reforming thereof, is mixed with the hot effluent from the catalytic steam reforming of the remaining portion of the feed discharged from the reformer tubes of a primary reformer-exchanger. The combined gas steam is passed on the shell side of the reformer-exchanger countercurrently to the passage of feed in the reformer tubes thereof, thus supplying the heat for the reforming of the portion of the feed passed through the reformer tubes of the reformerexchanger. At least about 2/3 of the hydrocarbon feed stream is passed to the reformer tubes of said primary reformer, heated by radiant heat transfer and/or by contact with combustion gases, at a steam/hydrocarbon mole ratio of about 2-4/1. The remainder of said feed stream is passed to the reformer tubes of said reformer -exchanger at a steam/hydrocarbon mole ratio of about 3-6/1. The reformer shell of the reformer-exchanger is internally insulated by a refractory lining or by use of a double shell with passage of water or a portion of the feed material between the inner and outer shells. There is no significant difference between the pressure inside and outside of the reformer tubes of said primary reformer-exchanger.

Fuderer, A.

1982-06-29T23:59:59.000Z

454

High pressure test results of a catalytically assisted ceramic combustor for a gas turbine  

SciTech Connect

A catalytically assisted ceramic combustor for a gas turbine was designed to achieve low NOx emission under 5 ppm at a combustor outlet temperature over 1300 C. This combustor is composed of a burner system and a ceramic liner behind the burner system. The burner system consist of 6 catalytic combustor segments and 6 premixing nozzles, which are arranged in parallel and alternately. The ceramic liner is made up of the layer of outer metal wall, ceramic fiber, and inner ceramic tiles. Fuel flow rates for the catalysts and the premixing nozzles are controlled independently. Catalytic combustion temperature is controlled under 1000 C, premixed gas is injected from the premixing nozzles to the catalytic combustion gas and lean premixed combustion over 1300 C is carried out in the ceramic liner. This system was designed to avoid catalytic deactivation at high temperature and thermal and mechanical shock fracture of the honeycomb monolith of catalyst. A combustor for a 10 MW class, multican type gas turbine was tested under high pressure conditions using LNG fuel. Measurements of emission, temperature, etc. were made to evaluate combustor performance under various combustion temperatures and pressures. This paper presents the design features and the test results of this combustor.

Ozawa, Y.; Tochihara, Y.; Mori, N.; Yuri, I. [Central Research Inst. of Electric Power Industry, Yokosuka, Kanagawa (Japan); Kanazawa, T.; Sagimori, K. [Kansai Electric Power Co., Inc., Amagasaki, Hyogo (Japan)

1999-07-01T23:59:59.000Z

455

NETL: Gasification Systems - Model Based Optimal Sensor Network Design for  

NLE Websites -- All DOE Office Websites (Extended Search)

Model Based Optimal Sensor Network Design for Condition Monitoring Model Based Optimal Sensor Network Design for Condition Monitoring Project Number: FE0005712 General Electric (GE) Global Research is developing an advanced model-based optimal sensor network to monitor the condition of the gasification section in an integrated gasification combined cycle (IGCC) plant. The work builds on model-based controls aimed at enhancing efficiency and operational flexibility through increased automation. Within an overall strategy of employing model-based online monitoring and predictive controls, GE Global Research is extending existing models for the gasifier and radiant syngas cooler to include the effects of degradation and fouling on the sensed variables like temperature etc., and will implement an estimation algorithm to assess the extent of gasifier refractory degradation and radiant syngas cooler fouling. An optimization-based solution will be employed to optimally place the hardware sensors utilized in the estimation algorithm in order to achieve the monitoring requirements at the lowest cost. The performance of the sensor placement algorithm and resulting monitoring solution will be demonstrated through simulations using representative test cases. The overall approach is one of the first to be applicable to condition monitoring of critical components in IGCC plants.

456

Hydrogen production by gasification of municipal solid waste  

SciTech Connect

As fossil fuel reserves run lower and lower, and as their continued widespread use leads toward numerous environmental problems, the need for clean and sustainable energy alternatives becomes ever clearer. Hydrogen fuel holds promise as such as energy source, as it burns cleanly and can be extracted from a number of renewable materials such as municipal solid waste (MSW), which can be considered largely renewable because of its high content of paper and biomass-derived products. A computer model is being developed using ASPEN Plus flow sheeting software to simulate a process which produces hydrogen gas from MSW; the model will later be used in studying the economics of this process and is based on an actual Texaco coal gasification plant design. This paper gives an overview of the complete MSW gasification process, and describes in detail the way in which MSW is modeled by the computer as a process material. In addition, details of the gasifier unit model are described; in this unit modified MSW reacts under pressure with oxygen and steam to form a mixture of gases which include hydrogen.

Rogers, R. III

1994-05-20T23:59:59.000Z

457

Effect of potassium carbonate on char gasification by carbon dioxide  

SciTech Connect

A differential packed-bed reactor has been employed to study the gasification of 7.5 wt% K/sub 2/CO/sub 3/-catalyzed Saran char in carbon dioxide/carbon monoxide mixtures at a total pressure near 1 atm (101.3 kPa) and temperatures between 922 and 1046 K. The rate data were tested with a model which involves two-site adsorption and subsequent dissociation of CO/sub 2/ on the char surface. The results indicate that this model adequately explains the catalyzed gasification data. Moreover, the activation energy for desorption of carbon-oxygen complex is lower for the catalyzed case than for the uncatalyzed case. Adsorption of CO and CO/sub 2/ on both catalyzed and uncatalyzed chars was also followed with a volumetric adsorption apparatus at pressures between 1 and 100 kPa and temperatures from 273 to 725 K. The catalyzed char adsorbed an order of magnitude more CO/sub 2/ at 560 K than the uncatalyzed char. Subsequent dissociation of CO/sub 2/ on the carbon surface does not appear to be catalyzed by potassium. Thus, the catalyst's role is to enhance CO/sub 2/ adsorption, thereby creating more oxygen on the surface, and lowering the activation energy for desorption of the resultant carbon-oxygen species.

Koenig, P.C.; Squires, R.G.; Laurendeau, N.M.

1986-07-01T23:59:59.000Z

458

Development of Pressurized Circulating Fluidized Bed Partial Gasification Module (PGM)  

SciTech Connect

Foster Wheeler Power Group, Inc. is working under US Department of Energy contract No. DE-FC26-00NT40972 to develop a partial gasification module (PGM) that represents a critical element of several potential coal-fired Vision 21 plants. When utilized for electrical power generation, these plants will operate with efficiencies greater than 60% and produce near zero emissions of traditional stack gas pollutants. The new process partially gasifies coal at elevated pressure producing a coal-derived syngas and a char residue. The syngas can be used to fuel the most advanced power producing equipment such as solid oxide fuel cells or gas turbines, or processed to produce clean liquid fuels or chemicals for industrial users. The char residue is not wasted; it can also be used to generate electricity by fueling boilers that drive the most advanced ultra-supercritical pressure steam turbines. The amount of syngas and char produced by the PGM can be tailored to fit the production objectives of the overall plant, i.e., power generation, clean liquid fuel production, chemicals production, etc. Hence, PGM is a robust building bock that offers all the advantages of coal gasification but in a more user-friendly form; it is also fuel flexible in that it can use alternative fuels such as biomass, sewerage sludge, etc. This report describes the work performed during the July 1-September 30, 2002 time period.

A. Robertson

2002-09-30T23:59:59.000Z

459

Effect of petroleum coke addition on coal gasification  

Science Journals Connector (OSTI)

The main fuel for power generation is combustion of coal and/or natural gas. Natural gas is expensive but clean and less problematic whereas coal is the reverse of natural gas. Natural gas resources are expected to last until 2020 where else coal has another 200 years expectancy. To replace the natural gas synthetic gas (syngas) can be used as a substitute fuel. Syngas can be produced using coal as fuel. In this study we blend petcoke a cheap solid carboneous fuel as an alternative to coal for the production of syngas using a 30 Kwattheat bubbling fluidized bed gasifier. The equivalent ratio (ER) was set at 2.8 and a gasification temperature was maintained between 680 to 710°C by manipulating between the feed flow rates and fluidizing medium. This condition was chosen as it proved to be the optimum based on the work by the same group. Various blend of coal:petcoke between 0 to 100% was analyzed. It was found that a 20:80 petcoke to coal gives a good correlation with 100% coal gasification.

2014-01-01T23:59:59.000Z

460

DEVELOPMENT OF PRESSURIZED CIRCULATING FLUIDIZED BED PARTIAL GASIFICATION MODULE (PGM)  

SciTech Connect

Foster Wheeler Power Group, Inc. is working under US Department of Energy contract No. DE-FC26-00NT40972 to develop a partial gasification module (PGM) that represents a critical element of several potential coal-fired Vision 21 plants. When utilized for electrical power generation, these plants will operate with efficiencies greater than 60% and produce near zero emissions of traditional stack gas pollutants. The new process partially gasifies coal at elevated pressure producing a coal-derived syngas and a char residue. The syngas can be used to fuel the most advanced power producing equipment such as solid oxide fuel cells or gas turbines, or processed to produce clean liquid fuels or chemicals for industrial users. The char residue is not wasted; it can also be used to generate electricity by fueling boilers that drive the most advanced ultra-supercritical pressure steam turbines. The amount of syngas and char produced by the PGM can be tailored to fit the production objectives of the overall plant, i.e., power generation, clean liquid fuel production, chemicals production, etc. Hence, PGM is a robust building bock that offers all the advantages of coal gasification but in a more user-friendly form; it is also fuel flexible in that it can use alternative fuels such as biomass, sewerage sludge, etc. This report describes the work performed during the October 1--December 31, 2002 time period.

Unknown

2003-01-30T23:59:59.000Z

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461

DEVELOPMENT OF PRESSURIZED CIRCULATING FLUIDIZED BED PARTIAL GASIFICATION MODULE (PGM)  

SciTech Connect

Foster Wheeler Power Group, Inc. is working under US Department of Energy contract No. DE-FC26-00NT40972 to develop a partial gasification module (PGM) that represents a critical element of several potential coal-fired Vision 21 plants. When utilized for electrical power generation, these plants will operate with efficiencies greater than 60% and produce near zero emissions of traditional stack gas pollutants. The new process partially gasifies coal at elevated pressure producing a coal-derived syngas and a char residue. The syngas can be used to fuel the most advanced power producing equipment such as solid oxide fuel cells or gas turbines, or processed to produce clean liquid fuels or chemicals for industrial users. The char residue is not wasted; it can also be used to generate electricity by fueling boilers that drive the most advanced ultra-supercritical pressure steam turbines. The amount of syngas and char produced by the PGM can be tailored to fit the production objectives of the overall plant, i.e., power generation, clean liquid fuel production, chemicals production, etc. Hence, PGM is a robust building bock that offers all the advantages of coal gasification but in a more user-friendly form; it is also fuel flexible in that it can use alternative fuels such as biomass, sewerage sludge, etc. This report describes the work performed during the April 1--June 30, 2003 time period.

Archie Robertson

2003-07-23T23:59:59.000Z

462

DEVELOPMENT OF PRESSURIZED CIRCULATING FLUIDIZED BED PARTIAL GASIFICATION MODULE (PGM)  

SciTech Connect

Foster Wheeler Power Group, Inc. is working under US Department of Energy contract No. DE-FC26-00NT40972 to develop a partial gasification module (PGM) that represents a critical element of several potential coal-fired Vision 21 plants. When utilized for electrical power generation, these plants will operate with efficiencies greater than 60% and produce near zero emissions of traditional stack gas pollutants. The new process partially gasifies coal at elevated pressure producing a coal-derived syngas and a char residue. The syngas can be used to fuel the most advanced power producing equipment such as solid oxide fuel cells or gas turbines, or processed to produce clean liquid fuels or chemicals for industrial users. The char residue is not wasted; it can also be used to generate electricity by fueling boilers that drive the most advanced ultra-supercritical pressure steam turbines. The amount of syngas and char produced by the PGM can be tailored to fit the production objectives of the overall plant, i.e., power generation, clean liquid fuel production, chemicals production, etc. Hence, PGM is a robust building bock that offers all the advantages of coal gasification but in a more user-friendly form; it is also fuel flexible in that it can use alternative fuels such as biomass, sewerage sludge, etc. This report describes the work performed during the July 1--September 30, 2003 time period.

Archie Robertson

2003-10-29T23:59:59.000Z

463

Development of Pressurized Circulating Fluidized Bed Partial Gasification Module (PGM)  

SciTech Connect

Foster Wheeler Power Group, Inc. is working under US Department of Energy contract No. DE-FC26-00NT40972 to develop a partial gasification module (PGM) that represents a critical element of several potential coal-fired Vision 21 plants. When utilized for electrical power generation, these plants will operate with efficiencies greater than 60% and produce near zero emissions of traditional stack gas pollutants. The new process partially gasifies coal at elevated pressure producing a coal-derived syngas and a char residue. The syngas can be used to fuel the most advanced power producing equipment such as solid oxide fuel cells or gas turbines, or processed to produce clean liquid fuels or chemicals for industrial users. The char residue is not wasted; it can also be used to generate electricity by fueling boilers that drive the most advanced ultra-supercritical pressure steam turbines. The amount of syngas and char produced by the PGM can be tailored to fit the production objectives of the overall plant, i.e., power generation, clean liquid fuel production, chemicals production, etc. Hence, PGM is a robust building bock that offers all the advantages of coal gasification but in a more user-friendly form; it is also fuel flexible in that it can use alternative fuels such as biomass, sewerage sludge, etc. This report describes the work performed during the October 1 - December 31, 2003 time period.

A. Robertson

2003-12-31T23:59:59.000Z

464

DEVELOPMENT OF PRESSURIZED CIRCULATING FLUDIZED BED PARTIAL GASIFICATION MODULE (PGM)  

SciTech Connect

Foster Wheeler Power Group, Inc. is working under US Department of Energy contract No. DE-FC26-00NT40972 to develop a partial gasification module (PGM) that represents a critical element of several potential coal-fired Vision 21 plants. When utilized for electrical power generation, these plants will operate with efficiencies greater than 60% and produce near zero emissions of traditional stack gas pollutants. The new process partially gasifies coal at elevated pressure producing a coal-derived syngas and a char residue. The syngas can be used to fuel the most advanced power producing equipment such as solid oxide fuel cells or gas turbines, or processed to produce clean liquid fuels or chemicals for industrial users. The char residue is not wasted; it can also be used to generate electricity by fueling boilers that drive the most advanced ultra-supercritical pressure steam turbines. The amount of syngas and char produced by the PGM can be tailored to fit the production objectives of the overall plant, i.e., power generation, clean liquid fuel production, chemicals production, etc. Hence, PGM is a robust building bock that offers all the advantages of coal gasification but in a more user-friendly form; it is also fuel flexible in that it can use alternative fuels such as biomass, sewerage sludge, etc. This report describes the work performed during the April 1--June 30, 2002 time period.

Archie Robertson

2002-07-10T23:59:59.000Z

465

Utilization of lightweight materials made from coal gasification slags  

SciTech Connect

Praxis is working on a DOE/METC funded project to demonstrate the technical and economic feasibility of making lightweight and ultra- lightweight aggregates from slags left as solid by-products from the coal gasification process. These aggregates are produced by controlled heating of the slags to temperatures ranging between 1600 and 1900{degrees}F. Over 10 tons of expanded slag lightweight aggregates (SLA) were produced using a direct-fired rotary kiln and a fluidized bed calciner with unit weights varying between 20 and 50 lb/ft{sup 3}. The slag-based aggregates are being evaluated at the laboratory scale as substitutes for conventional lightweight aggregates in making lightweight structural concrete, roof tiles, blocks, insulating concrete, and a number of other applications. Based on the laboratory data, large-scale testing will be performed and the durability of the finished products evaluated. Conventional lightweight aggregates made from pyroprocessing expansible shales or clays are produced for $30/ton. The net production costs of SLA are in the range of $22 to $24/ton for large systems (44 t/d) and $26-$30/ton for small systems (220 t/d). Thus, the technology provides a good opportunity for economic use of gasification slags.

NONE

1996-07-08T23:59:59.000Z

466

Injection-Induced Earthquakes  

Science Journals Connector (OSTI)

...injected into the reservoir under high pressure...core samples of the reservoir rocks and in situ determination...fracture-dominated porosity of less than 6...Implications for reservoir fracture permeability . AAPG Bull. 93...

William L. Ellsworth

2013-07-12T23:59:59.000Z

467

Premixed direct injection disk  

DOE Patents (OSTI)

A fuel/air mixing disk for use in a fuel/air mixing combustor assembly is provided. The disk includes a first face, a second face, and at least one fuel plenum disposed therebetween. A plurality of fuel/air mixing tubes extend through the pre-mixing disk, each mixing tube including an outer tube wall extending axially along a tube axis and in fluid communication with the at least one fuel plenum. At least a portion of the plurality of fuel/air mixing tubes further includes at least one fuel injection hole have a fuel injection hole diameter extending through said outer tube wall, the fuel injection hole having an injection angle relative to the tube axis. The invention provides good fuel air mixing with low combustion generated NOx and low flow pressure loss translating to a high gas turbine efficiency, that is durable, and resistant to flame holding and flash back.

York, William David; Ziminsky, Willy Steve; Johnson, Thomas Edward; Lacy, Benjamin; Zuo, Baifang; Uhm, Jong Ho

2013-04-23T23:59:59.000Z

468

Injection Laser System  

NLE Websites -- All DOE Office Websites (Extended Search)

Injection Laser System For each of NIF's 192 beams: The pulse shape as a function of time must be generated with a high degree of precision The energy delivered to the target must...

469

Evaluation of a subsurface oxygenation technique using colloidal gas aphron injections into packed column reactors  

SciTech Connect

Bioremediation may be a remedial technology capable of decontaminating subsurface environments. The objective of this research was to evaluate the use of colloidal gas aphron (CGA) injection, which is the injection of micrometer-size air bubbles in an aqueous surfactant solution, as a subsurface oxygenation technique to create optimal growth conditions for aerobic bacteria. Along with this, the capability of CGAs to act as a soil-washing agent and free organic components from a coal tar-contaminated matrix was examined. Injection of CGAs may be useful for remediation of underground coal gasification (UCG) sites. Because of this, bacteria and solid material from a UCG site located in northeastern Wyoming were used in this research. Colloidal gas aphrons were generated and pumped through packed column reactors (PCRS) containing post-burn core materials. For comparison, PCRs containing sand were also studied. Bacteria from this site were tested for their capability to degrade phenol, a major contaminant at the UCG site, and were also used to bioaugment the PCR systems. In this study we examined: (1) the effect of CGA injection on dissolved oxygen concentrations in the PCR effluents, (2) the effect of CGA, H[sub 2]O[sub 2], and phenol injections on bacterial populations, (3) the stability and transport of CGAs over distance, and (4) CGA injection versus H[sub 2]O[sub 2] injection as an oxygenation technique.

Wills, R.A.; Coles, P.

1991-11-01T23:59:59.000Z

470

Evaluation of a subsurface oxygenation technique using colloidal gas aphron injections into packed column reactors  

SciTech Connect

Bioremediation may be a remedial technology capable of decontaminating subsurface environments. The objective of this research was to evaluate the use of colloidal gas aphron (CGA) injection, which is the injection of micrometer-size air bubbles in an aqueous surfactant solution, as a subsurface oxygenation technique to create optimal growth conditions for aerobic bacteria. Along with this, the capability of CGAs to act as a soil-washing agent and free organic components from a coal tar-contaminated matrix was examined. Injection of CGAs may be useful for remediation of underground coal gasification (UCG) sites. Because of this, bacteria and solid material from a UCG site located in northeastern Wyoming were used in this research. Colloidal gas aphrons were generated and pumped through packed column reactors (PCRS) containing post-burn core materials. For comparison, PCRs containing sand were also studied. Bacteria from this site were tested for their capability to degrade phenol, a major contaminant at the UCG site, and were also used to bioaugment the PCR systems. In this study we examined: (1) the effect of CGA injection on dissolved oxygen concentrations in the PCR effluents, (2) the effect of CGA, H{sub 2}O{sub 2}, and phenol injections on bacterial populations, (3) the stability and transport of CGAs over distance, and (4) CGA injection versus H{sub 2}O{sub 2} injection as an oxygenation technique.

Wills, R.A.; Coles, P.

1991-11-01T23:59:59.000Z

471

Tevatron injection timing  

SciTech Connect

Bunched beam transfer from one accelerator to another requires coordination and synchronization of many ramped devices. During collider operation timing issues are more complicated since one has to switch from proton injection devices to antiproton injection devices. Proton and antiproton transfers are clearly distinct sequences since protons and antiprotons circulate in opposite directions in the Main Ring (MR) and in the Tevatron. The time bumps are different, the kicker firing delays are different, the kickers and lambertson magnets are different, etc. Antiprotons are too precious to be used for tuning purposes, therefore protons are transferred from the Tevatron back into the Main Ring, tracing the path of antiprotons backwards. This tuning operation is called ``reverse injection.`` Previously, the reverse injection was handled in one supercycle. One batch of uncoalesced bunches was injected into the Tevatron and ejected after 40 seconds. Then the orbit closure was performed in the MR. In the new scheme the lambertson magnets have to be moved and separator polarities have to be switched, activities that cannot be completed in one supercycle. Therefore, the reverse injection sequence was changed. This involved the redefinition of TVBS clock event $D8 as MRBS $D8 thus making it possible to inject 6 proton batches (or coalesced bunches) and eject them one at a time on command, performing orbit closure each time in the MR. Injection devices are clock event driven. The TCLK is used as the reference clock. Certain TCLK events are triggered by the MR beam synchronized clock (MRBS) events. Some delays are measured in terms of MRBS ticks and MR revolutions. See Appendix A for a brief description of the beam synchronized clocks.

Saritepe, S.; Annala, G.

1993-06-01T23:59:59.000Z

472

Modeling and comparative assessment of municipal solid waste gasification for energy production  

SciTech Connect

Highlights: • Study developed a methodology for the evaluation of gasification for MSW treatment. • Study was conducted comparatively for USA, UAE, and Thailand. • Study applies a thermodynamic model (Gibbs free energy minimization) using the Gasify software. • The energy efficiency of the process and the compatibility with different waste streams was studied. - Abstract: Gasification is the thermochemical conversion of organic feedstocks mainly into combustible syngas (CO and H{sub 2}) along with other constituents. It has been widely used to convert coal into gaseous energy carriers but only has been recently looked at as a process for producing energy from biomass. This study explores the potential of gasification for energy production and treatment of municipal solid waste (MSW). It relies on adapting the theory governing the chemistry and kinetics of the gasification process to the use of MSW as a feedstock to the process. It also relies on an equilibrium kinetics and thermodynamics solver tool (Gasify®) in the process of modeling gasification of MSW. The effect of process temperature variation on gasifying MSW was explored and the results were compared to incineration as an alternative to gasification of MSW. Also, the assessment was performed comparatively for gasification of MSW in the United Arab Emirates, USA, and Thailand, presenting a spectrum of socioeconomic settings with varying MSW compositions in order to explore the effect of MSW composition variance on the products of gasification. All in all, this study provides an insight into the potential of gasification for the treatment of MSW and as a waste to energy alternative to incineration.

Arafat, Hassan A., E-mail: harafat@masdar.ac.ae; Jijakli, Kenan

2013-08-15T23:59:59.000Z

473

Passive Catalytic Approach to Low Temperature NOx Emission Abatement...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Catalytic Approach to Low Temperature NOx Emission Abatement Passive Catalytic Approach to Low Temperature NOx Emission Abatement Numerically evaluated and optimized proposed...

474

Measurement of diesel solid nanoparticle emissions using a catalytic...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

diesel solid nanoparticle emissions using a catalytic stripper for comparison with Europe's PMP protocol Measurement of diesel solid nanoparticle emissions using a catalytic...

475

TCS 2014 Symposium on Thermal and Catalytic Sciences for Biofuels...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

TCS 2014 Symposium on Thermal and Catalytic Sciences for Biofuels and Biobased Products TCS 2014 Symposium on Thermal and Catalytic Sciences for Biofuels and Biobased Products...

476

Fuel-Flexible, Low-Emissions Catalytic Combustor for Opportunity...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Flexible, Low-Emissions Catalytic Combustor for Opportunity Fuels Fuel-Flexible, Low-Emissions Catalytic Combustor for Opportunity Fuels This fact sheet provides an overview of the...

477

Catalytic converter with thermoelectric generator  

SciTech Connect

The unique design of an electrically heated catalyst (EHC) and the inclusion of an ECO valve in the exhaust of an internal combustion engine will meet the strict new emission requirements, especially at vehicle cold start, adopted by several states in this country as well as in Europe and Japan. The catalytic converter (CC) has been a most useful tool in pollution abatement for the automobile. But the emission requirements are becoming more stringent and, along with other improvements, the CC must be improved to meet these new standards. Coupled with the ECO valve, the EHC can meet these new emission limits. In an internal combustion engine vehicle (ICEV), approximately 80% of the energy consumed leaves the vehicle as waste heat: out the tail pipe, through the radiator, or convected/radiated off the engine. Included with the waste heat out the tail pipe are the products of combustion which must meet strict emission requirements. The design of a new CC is presented here. This is an automobile CC that has the capability of producing electrical power and reducing the quantity of emissions at vehicle cold start, the Thermoelectric Catalytic Power Generator. The CC utilizes the energy of the exothermic reactions that take place in the catalysis substrate to produce electrical energy with a thermoelectric generator. On vehicle cold start, the thermoelectric generator is used as a heat pump to heat the catalyst substrate to reduce the time to catalyst light-off. Thus an electrically heated catalyst (EHC) will be used to augment the abatement of tail pipe emissions. Included with the EHC in the exhaust stream of the automobile is the ECO valve. This valve restricts the flow of pollutants out the tail pipe of the vehicle for a specified amount of time until the EHC comes up to operating temperature. Then the ECO valve opens and allows the full exhaust, now treated by the EHC, to leave the vehicle.

Parise, R.J.

1998-07-01T23:59:59.000Z

478

CO2 Gasification Kinetics of Biomass Char Derived from High-Temperature Rapid Pyrolysis  

Science Journals Connector (OSTI)

CO2 Gasification Kinetics of Biomass Char Derived from High-Temperature Rapid Pyrolysis ... The rapid pyrolysis char produced was isothermally gasified in a thermogravimetric analyzer (TGA) under a CO2 atmosphere. ... In the study by Zhang and co-workers, where as much as 14 biomass chars were gasified, gasification rates of all of the wooden biomass chars present a similar feature as Figure 7a (PS char), but this feature has not been found from gasification rates of the herbaceous biomass char. ...

Shuai Yuan; Xue-li Chen; Jun Li; Fu-chen Wang

2011-03-30T23:59:59.000Z

479

Biomass waste gasification - Can be the two stage process suitable for tar reduction and power generation?  

SciTech Connect

Highlights: Black-Right-Pointing-Pointer Comparison of one stage (co-current) and two stage gasification of wood pellets. Black-Right-Pointing-Pointer Original arrangement with grate-less reactor and upward moving bed of the pellets. Black-Right-Pointing-Pointer Two stage gasification leads to drastic reduction of tar content in gas. Black-Right-Pointing-Pointer One stage gasification produces gas with higher LHV at lower overall ER. Black-Right-Pointing-Pointer Content of ammonia in gas is lower in two stage moving bed gasification. - Abstract: A pilot scale gasification unit with novel co-current, updraft arrangement in the first stage and counter-current downdraft in the second stage was developed and exploited for studying effects of two stage gasification in comparison with one stage gasification of biomass (wood pellets) on fuel gas composition and attainable gas purity. Significant producer gas parameters (gas composition, heating value, content of tar compounds, content of inorganic gas impurities) were compared for the two stage and the one stage method of the gasification arrangement with only the upward moving bed (co-current updraft). The main novel features of the gasifier conception include grate-less reactor, upward moving bed of biomass particles (e.g. pellets) by means of a screw elevator with changeable rotational speed and gradual expanding diameter of the cylindrical reactor in the part above the upper end of the screw. The gasifier concept and arrangement are considered convenient for thermal power range 100-350 kW{sub th}. The second stage of the gasifier served mainly for tar compounds destruction/reforming by increased temperature (around 950 Degree-Sign C) and for gasification reaction of the fuel gas with char. The second stage used additional combustion of the fuel gas by preheated secondary air for attaining higher temperature and faster gasification of the remaining char from the first stage. The measurements of gas composition and tar compound contents confirmed superiority of the two stage gasification system, drastic decrease of aromatic compounds with two and higher number of benzene rings by 1-2 orders. On the other hand the two stage gasification (with overall ER = 0.71) led to substantial reduction of gas heating value (LHV = 3.15 MJ/Nm{sup 3}), elevation of gas volume and increase of nitrogen content in fuel gas. The increased temperature (>950 Degree-Sign C) at the entrance to the char bed caused also substantial decrease of ammonia content in fuel gas. The char with higher content of ash leaving the second stage presented only few mass% of the inlet biomass stream.

Sulc, Jindrich; Stojdl, Jiri; Richter, Miroslav; Popelka, Jan [Faculty of the Environment, Jan Evangelista Purkyne University in Usti nad Labem, Kralova Vysina 7, 400 96 Usti nad Labem (Czech Republic); Svoboda, Karel, E-mail: svoboda@icpf.cas.cz [Faculty of the Environment, Jan Evangelista Purkyne University in Usti nad Labem, Kral