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Note: This page contains sample records for the topic "gas coal renewables" 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
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1

Renewable Natural Gas  

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

Natural Gas Natural Gas JOHN DAVIS: The use of clean, domestic natural gas as highway fuel in place of imported oil is growing in popularity with fleets and trucking companies. While natural gas from underground deposits is arguably a limited resource, there is a renewable, eco-friendly resource that we have right here in the U.S.A. And we're here now to give you the straight poop! Every family, farm animal and food processing plant in America produces organic waste that creates a mix of methane, CO2 and other elements called bio gas when it decomposes. Rotten vegetables, moldy bread, last night's leftovers --- they all break down when our garbage gets to the land fill. Incredibly, for

2

Turmoil in U.S. Coal Markets: Integrating Pressures from Environmental Regulations, Renewables, Natural Gas and Globalization  

Science Conference Proceedings (OSTI)

U.S. coal markets are changing due to intensifying domestic and international forces. This report reviews the extent of these changes, examines recent trends in supply and demand for coals from each major U.S. coal-producing region, and delineates the principal forces of change and their impacts now and in the future. The report quantifies changes due to environmental regulations, coal plant retirements, and power plant installation environmental controls that reduce the need for the lowest sulfur coals....

2011-12-30T23:59:59.000Z

3

COAL CLEANING BY GAS AGGLOMERATION  

SciTech Connect

The agglomeration of ultrafine-size coal particles in an aqueous suspension by means of microscopic gas bubbles was demonstrated in numerous experiments with a scale model mixing system. Coal samples from both the Pittsburgh No. 8 Seam and the Upper Freeport Seam were used for these experiments. A small amount of i-octane was added to facilitate the process. Microscopic gas bubbles were generated by saturating the water used for suspending coal particles with gas under pressure and then reducing the pressure. Microagglomerates were produced which appeared to consist of gas bubbles encapsulated in coal particles. Since dilute particle suspensions were employed, it was possible to monitor the progress of agglomeration by observing changes in turbidity. By such means it became apparent that the rate of agglomeration depends on the concentration of microscopic gas bubbles and to a lesser extent on the concentration of i-octane. Similar results were obtained with both Pittsburgh No. 8 coal and Upper Freeport coal.

MEIYU SHEN; ROYCE ABBOTT; T.D. WHEELOCK

1998-09-30T23:59:59.000Z

4

Restoring Equilibrium to Natural Gas Markets: Can Renewable Energy Help?  

E-Print Network (OSTI)

Deployment of Renewable Energy and Energy Efficiency,” canGas Markets: Can Renewable Energy Help? Ryan Wiser and MarkProponents of renewable energy technologies identify these

Wiser, Ryan; Bolinger, Mark

2005-01-01T23:59:59.000Z

5

Restoring Equilibrium to Natural Gas Markets: Can Renewable Energy Help?  

E-Print Network (OSTI)

through Increased Deployment of Renewable Energy and EnergyNatural Gas Markets: Can Renewable Energy Help? Ryan Wiserenergy supplies. Proponents of renewable energy technologies

Wiser, Ryan; Bolinger, Mark

2005-01-01T23:59:59.000Z

6

Secretary Moniz on Natural Gas and Renewables | Department of...  

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

Sites Power Marketing Administration Other Agencies You are here Home Secretary Moniz on Natural Gas and Renewables Secretary Moniz on Natural Gas and Renewables Addthis...

7

Greenhouse Gas Reduction with Renewables  

Science Conference Proceedings (OSTI)

At some time in the future, renewable energy sources -- solar, wind, biomass, and geothermal -- will play a major role in reducing fossil carbon emissions. This report assesses that prospect; addresses the role, timing, and costs; and discusses barriers, key issues, and efforts to develop or prove the technologies. The report will assist power generation companies as they plan and publicize their own roles in renewable power.

2000-12-12T23:59:59.000Z

8

Coal Beneficiation by Gas Agglomeration  

DOE Patents (OSTI)

Coal beneficiation is achieved by suspending coal fines in a colloidal suspension of microscopic gas bubbles in water under atmospheric conditions to form small agglomerates of the fines adhered by the gas bubbles. The agglomerates are separated, recovered and resuspended in water. Thereafter, the pressure on the suspension is increased above atmospheric to deagglomerate, since the gas bubbles are then re-dissolved in the water. During the deagglomeration step, the mineral matter is dispersed, and when the pressure is released, the coal portion of the deagglomerated gas-saturated water mixture reagglomerates, with the small bubbles now coming out of the solution. The reagglomerate can then be separated to provide purified coal fines without the mineral matter.

Thomas D. Wheelock; Meiyu Shen

2000-03-15T23:59:59.000Z

9

Economics of gas from coal  

SciTech Connect

This study deals with three questions: What does gas from coal cost and what affects this cost; How do different approaches and processes compare; and How near to competitive cost-levels is present-day technology. Discussion covers production of both substitute natural gas (SNG) and medium calorific gas (MCG: 10-16 MJ/Nm3 or 250-400 Btu/SCF). Conclusions are that SNG from low-cost U.S. coal and West German brown coal are, on the basis of mature technology and Government rates-of-return, roughly competitive with gas imports into the U.S. and Europe respectively. Similarly MCG from second-generation gasifiers is competitive with gas-oil or No. 2 heating oil in Europe, North America and Japan. However, capital costs form about half total gas costs at 10 percent rate-of-return, so that the competitiveness of gas from coal is sensitive to capital costs: this is the area of greatest uncertainty.

Teper, M.; Hemming, D.F.; Ulrich, W.C.

1983-01-01T23:59:59.000Z

10

Alternative Fuels Data Center: Renewable Natural Gas From Landfill Powers  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Renewable Natural Gas Renewable Natural Gas From Landfill Powers Refuse Vehicles to someone by E-mail Share Alternative Fuels Data Center: Renewable Natural Gas From Landfill Powers Refuse Vehicles on Facebook Tweet about Alternative Fuels Data Center: Renewable Natural Gas From Landfill Powers Refuse Vehicles on Twitter Bookmark Alternative Fuels Data Center: Renewable Natural Gas From Landfill Powers Refuse Vehicles on Google Bookmark Alternative Fuels Data Center: Renewable Natural Gas From Landfill Powers Refuse Vehicles on Delicious Rank Alternative Fuels Data Center: Renewable Natural Gas From Landfill Powers Refuse Vehicles on Digg Find More places to share Alternative Fuels Data Center: Renewable Natural Gas From Landfill Powers Refuse Vehicles on AddThis.com... April 13, 2013

11

Renewable energy perspectives in the  

E-Print Network (OSTI)

Renewable energy perspectives in the mediterranean countries - the Mediterranean Solar Plan Dr 600 800 1000 1200 1400 1990 2009 CS2030 PS2030 Mtoe Renewables & Waste Hydro Nuclear Gas Oil Coal #12 - hydro Renewables Hydro Nuclear Gas Oil Coal 2009 2030 PS2030 CS #12;RENEWABLE ELECTRICITY GENERATION 0

Canet, LĂ©onie

12

Community Renewable Energy Success Stories: Landfill Gas-to-Energy...  

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

Stories: Landfill Gas-to-Energy Projects Webinar (text version) Community Renewable Energy Success Stories: Landfill Gas-to-Energy Projects Webinar (text version) Below is the text...

13

Evaluate Greenhouse Gas Emissions Profile Using Renewable Energy in  

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

Evaluate Greenhouse Gas Emissions Profile Using Renewable Energy in Evaluate Greenhouse Gas Emissions Profile Using Renewable Energy in Buildings Evaluate Greenhouse Gas Emissions Profile Using Renewable Energy in Buildings October 7, 2013 - 11:16am Addthis After assessing the potential for agency size changes, a Federal agency should evaluate its greenhouse gas (GHG) emissions profile using renewable energy in buildings. When using renewable energy in buildings, the approach for evaluating GHG emissions involves evaluating the renewable energy resource potential and determining what type of renewable energy technology to use in a building. To help determine renewable energy resource potential at a site, see FEMP's information on Renewable Energy Resource Maps and Screening Tools. Also see Renewable Energy Project Planning and Implementation.

14

Accounting for fuel price risk when comparing renewable to gas-fired generation: the role of forward natural gas prices  

E-Print Network (OSTI)

of Renewable and Natural Gas Electricity Contracts: Afor Fuel Price Risk: Using Forward Natural Gas PricesInstead of Gas Price Forecasts to Compare Renewable to Gas-

Bolinger, Mark; Wiser, Ryan; Golove, William

2004-01-01T23:59:59.000Z

15

Restoring Equilibrium to Natural Gas Markets: Can Renewable Energy Help?  

E-Print Network (OSTI)

AC03- 76SF00098. The report “Easing the Natural Gas Crisis:Reducing Natural Gas Prices through Increased Deployment ofRestoring Equilibrium to Natural Gas Markets: Can Renewable

Wiser, Ryan; Bolinger, Mark

2005-01-01T23:59:59.000Z

16

Use Renewable Energy in Buildings for Greenhouse Gas Mitigation |  

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

Use Renewable Energy in Buildings for Greenhouse Gas Mitigation Use Renewable Energy in Buildings for Greenhouse Gas Mitigation Use Renewable Energy in Buildings for Greenhouse Gas Mitigation October 7, 2013 - 11:13am Addthis After all cost-effective energy efficiency projects have been explored as part of a Federal agency's planning efforts for greenhouse gas (GHG) mitigation in buildings, renewable energy may be considered as an option for meeting the agency's GHG reduction goals. Renewable energy can reduce emissions in all three GHG emission scopes by displacing conventional fossil fuel use. The focus of this guidance is prioritizing on-site renewable energy projects that will best support GHG reduction goals. It is intended to provide a high-level screening approach for on-site renewable energy projects to support agency- or program-level portfolio planning. General

17

Natural gas, renewables dominate electric capacity additions in ...  

U.S. Energy Information Administration (EIA)

Of the ten states with the highest levels of capacity additions, most of the new capacity uses natural gas or renewable energy sources.

18

Evaluate Greenhouse Gas Reduction Strategies Using Renewable Energy in  

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

Evaluate Greenhouse Gas Reduction Strategies Using Renewable Energy Evaluate Greenhouse Gas Reduction Strategies Using Renewable Energy in Buildings Evaluate Greenhouse Gas Reduction Strategies Using Renewable Energy in Buildings October 7, 2013 - 11:23am Addthis Once Federal sites have been screened for viability of different renewable energy resources to evaluate emissions profile, the next step is to establish what renewable energy resources developed at which particular sites would have the greatest impact on the agency's overall greenhouse gas (GHG) emissions goals. It is important to consider that some types of renewable energy generation could impact not only Scope 1 and 2 GHG goals, but also Scope 3 goals through avoided transmission and distribution losses. Estimate Greenhouse Gas Reduction Potential It is important to note that solar systems can have the greatest reduction

19

Changes related to "Coal seam natural gas producing areas (Louisiana...  

Open Energy Info (EERE)

Special page Share this page on Facebook icon Twitter icon Changes related to "Coal seam natural gas producing areas (Louisiana)" Coal seam natural gas producing areas...

20

Renewable Natural Gas Clean-up Challenges and Applications  

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

Renewable Natural Gas Clean-up Renewable Natural Gas Clean-up p Challenges and Applications Renewable Resource Webinar July 13, 2011 Brian Weeks, Gas Technology Institute 281 235 7993, brian.weeks@gastechnology.org Kristine Wiley, Gas Technology Institute 847 768 0910 kristine wiley@gastechnology org 847 768 0910, kristine.wiley@gastechnology.org 2 Today's Talk Today s Talk >Who is GTI Who is GTI >What is Renewable Natural Gas (RNG) Ch ll f R bl N t l G >Challenges for Renewable Natural Gas >How do we clean up RNG? >Recommendations and Summary 2 - - 3 GTI at a Glance... > Not-for-profit research > Not for profit research, with 65+ year history > Facilities 18 Chi ─ 18 acre campus near Chicago ─ 200,000 ft 2 , 28 specialized labs $60 illi > $60 + million i in revenue

Note: This page contains sample records for the topic "gas coal renewables" 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

Easing the natural gas crisis: Reducing natural gas prices through increased deployment of renewable energy and energy efficiency  

E-Print Network (OSTI)

gas and other non-renewable-energy commodities (ignoring thefor other non-renewable, non-energy commodities. Although we

Wiser, Ryan; Bolinger, Mark; St. Clair, Matt

2004-01-01T23:59:59.000Z

22

Putting downward pressure on natural gas prices: The impact of renewable energy and energy efficiency  

E-Print Network (OSTI)

estimates for other non-renewable energy commodities, namelynatural gas and other non-renewable energy commodities is

Wiser, Ryan; Bolinger, Mark; St. Clair, Matthew

2004-01-01T23:59:59.000Z

23

Gas distributor for fluidized bed coal gasifier  

DOE Patents (OSTI)

A gas distributor for distributing high temperature reaction gases to a fluidized bed of coal particles in a coal gasification process. The distributor includes a pipe with a refractory reinforced lining and a plurality of openings in the lining through which gas is fed into the bed. These feed openings have an expanding tapered shape in the downstream or exhaust direction which aids in reducing the velocity of the gas jets as they enter the bed.

Worley, Arthur C. (Mt. Tabor, NJ); Zboray, James A. (Irvine, CA)

1980-01-01T23:59:59.000Z

24

Prioritize Greenhouse Gas Mitigation Strategies Using Renewable Energy in  

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

Prioritize Greenhouse Gas Mitigation Strategies Using Renewable Prioritize Greenhouse Gas Mitigation Strategies Using Renewable Energy in Buildings Prioritize Greenhouse Gas Mitigation Strategies Using Renewable Energy in Buildings October 7, 2013 - 11:27am Addthis At this point in the analysis for using renewable energy in buildings, after estimating costs to implement strategies, there should be a list of sites and promising renewable energy technologies. The next step in the analysis is to prioritize those sites and technologies to achieve cost-effective reductions in greenhouse (GHG) emissions. In prioritizing the locations for cost-effective renewable energy project development, start with the sites that have the: Best resources Best financial incentives Highest energy rates. These factors are the most important for determining the economic viability

25

Putting downward pressure on natural gas prices: The impact of renewable energy and energy efficiency  

E-Print Network (OSTI)

forecasts of U.S. coal minemouth prices and total U.S. coalInverse Price Elasticities for Gas, Coal, and implicitdisplace coal over time, muting the impact on gas prices. As

Wiser, Ryan; Bolinger, Mark; St. Clair, Matthew

2004-01-01T23:59:59.000Z

26

Advanced coal-fueled gas turbine systems  

SciTech Connect

Several technology advances since the early coal-fueled turbine programs that address technical issues of coal as a turbine fuel have been developed in the early 1980s: Coal-water suspensions as fuel form, improved methods for removing ash and contaminants from coal, staged combustion for reducing NO{sub x} emissions from fuel-bound nitrogen, and greater understanding of deposition/erosion/corrosion and their control. Several Advanced Coal-Fueled Gas Turbine Systems programs were awarded to gas turbine manufacturers for for components development and proof of concept tests; one of these was Allison. Tests were conducted in a subscale coal combustion facility and a full-scale facility operating a coal combustor sized to the Allison Model 501-K industrial turbine. A rich-quench-lean (RQL), low nitrogen oxide combustor design incorporating hot gas cleanup was developed for coal fuels; this should also be applicable to biomass, etc. The combustor tests showed NO{sub x} and CO emissions {le} levels for turbines operating with natural gas. Water washing of vanes from the turbine removed the deposits. Systems and economic evaluations identified two possible applications for RQL turbines: Cogeneration plants based on Allison 501-K turbine (output 3.7 MW(e), 23,000 lbs/hr steam) and combined cycle power plants based on 50 MW or larger gas turbines. Coal-fueled cogeneration plant configurations were defined and evaluated for site specific factors. A coal-fueled turbine combined cycle plant design was identified which is simple, compact, and results in lower capital cost, with comparable efficiency and low emissions relative to other coal technologies (gasification, advanced PFBC).

Wenglarz, R.A.

1994-08-01T23:59:59.000Z

27

Coal seam natural gas producing areas (Louisiana)  

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

In order to prevent waste and to avoid the drilling of unnecessary wells and to encourage the development of coal seam natural gas producing areas in Louisiana, the commissioner of conservation is...

28

JEDI II: Jobs and Economic Development Impacts from Coal, Naural Gas and Wind Power (Poster)  

Wind Powering America (EERE)

JEDI II: JOBS AND ECONOMIC DEVELOPMENT IMPACTS JEDI II: JOBS AND ECONOMIC DEVELOPMENT IMPACTS FROM COAL, NATURAL GAS, AND WIND POWER Marshall Goldberg MRG & Associates Nevada City, California Suzanne Tegen National Renewable Energy Laboratory Golden, Colorado The information contained in this poster is subject to a government license. * WINDPOWER 2006 * Pittsburgh, PA * June 4-7, 2006 * NREL/PO-500-39908 Michael Milligan, Consultant National Renewable Energy Laboratory Golden, Colorado How does JEDI II work? The user enters data specific to the new coal, gas, or wind plant: * Year of installation * Size of the project * Location * Cost ($/kW) * Any other site-specific information

29

PG&E's Renewable Portfolio Standard & Greenhouse Gas Compliance  

E-Print Network (OSTI)

PG&E's Renewable Portfolio Standard & Greenhouse Gas Compliance Fong Wan Senior Vice President. AB32 and Greenhouse Gas Legislation Outline #12;PG&E's Electric Generation Portfolio *Note: Other" for the purpose of this slide RPS BINDER 1.3 #12;AB32 & Greenhouse Gas Overview · AB32 signed into law

30

Easing the natural gas crisis: Reducing natural gas prices through increased deployment of renewable energy and energy efficiency  

E-Print Network (OSTI)

Fuel Price Risk: Using Forward Natural Gas Prices Insteadof Gas Price Forecasts to Compare Renewable to Natural Gas-2003. Natural Gas and Energy Price Volatility. Arlington,

Wiser, Ryan; Bolinger, Mark; St. Clair, Matt

2004-01-01T23:59:59.000Z

31

Can Deployment of Renewable Energy and Energy Efficiency Put Downward Pressure on Natural Gas Prices  

E-Print Network (OSTI)

ACEEE). 2003. Natural Gas Price Effects of Energy EfficiencyFuel Price Risk: Using Forward Natural Gas Prices Insteadof Gas Price Forecasts to Compare Renewable to Natural Gas-

Wiser, Ryan; Bolinger, Mark

2005-01-01T23:59:59.000Z

32

Apples with apples: accounting for fuel price risk in comparisons of gas-fired and renewable generation  

E-Print Network (OSTI)

of gas-fired and renewable generation Mark Bolinger and Ryannatural gas prices, renewable energy resources – which bygas-fired generation, renewable generation, such as wind or

Bolinger, Mark; Wiser, Ryan

2003-01-01T23:59:59.000Z

33

Geomechanics of coal-gas interactions : the role of coal permeability evolution.  

E-Print Network (OSTI)

??[Truncated abstract] Complex interactions between stress and sorptive chemistry exert strong influence on coal geomechanics. These include influences on gas sorption and flow, coal deformation,… (more)

Chen, Zhongwei

2012-01-01T23:59:59.000Z

34

A Renewable Boost for Natural Gas | Department of Energy  

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

A Renewable Boost for Natural Gas A Renewable Boost for Natural Gas A Renewable Boost for Natural Gas April 24, 2013 - 3:45pm Addthis The new hybrid solar-natural gas system from Pacific Northwest National Laboratory (PNNL) works through concentrating solar power, which uses a reflecting surface to concentrate the sun's rays like a magnifying glass. In the case of the new system from PNNL, a mirrored parabolic dish directs sunbeams to a central point, where a device absorbs the solar heat to make syngas.| Photo courtesy of PNNL. The new hybrid solar-natural gas system from Pacific Northwest National Laboratory (PNNL) works through concentrating solar power, which uses a reflecting surface to concentrate the sun's rays like a magnifying glass. In the case of the new system from PNNL, a mirrored parabolic dish directs

35

Renewable wood fuel: Fuel feed system for a pulverized coal boiler. Final report  

DOE Green Energy (OSTI)

This report evaluates a pilot test program conducted by New York State Gas & Electric Corporation to evaluate the feasibility of co-firing a pulverized coal plant with renewable wood fuels. The goal was to establish that such a co-firing system can reduce air emissions while maintaining good operational procedures and cost controls. The test fuel feed system employed at Greenidge Station`s Boiler 6 was shown to be effective in feeding wood products. Emission results were promising and an economic analysis indicates that it will be beneficial to pursue further refinements to the equipment and systems. The report recommends further evaluation of the generation and emission impacts using woods of varied moisture contents and at varied Btu input rates to determine if a drying system would be a cost-effective option.

NONE

1996-01-01T23:59:59.000Z

36

Accounting for fuel price risk when comparing renewable to gas-fired generation: the role of forward natural gas prices  

E-Print Network (OSTI)

W. Golove (2003). Accounting for Fuel Price Risk: UsingForward Natural Gas Prices Insteadof Gas Price Forecasts to Compare Renewable to Gas-Fired

Bolinger, Mark; Wiser, Ryan; Golove, William

2004-01-01T23:59:59.000Z

37

Comparing the Risk Profiles of Renewable and Natural Gas Electricity Contracts  

E-Print Network (OSTI)

Comparing the Risk Profiles of Renewable and Natural Gas Electricity Contracts: A Summary.............................................................................20 B. Natural Gas Tolling Contracts.............................................................................24 B. Natural Gas Tolling Contracts

Kammen, Daniel M.

38

Putting downward pressure on natural gas prices: The impact of renewable energy and energy efficiency  

E-Print Network (OSTI)

in delivered natural gas prices. References American CouncilACEEE). 2003. Natural Gas Price Effects of Energy EfficiencyPressure on Natural Gas Prices: The Impact of Renewable

Wiser, Ryan; Bolinger, Mark; St. Clair, Matthew

2004-01-01T23:59:59.000Z

39

Prediction of Coal /Gas Outbursts Based on Selective Ensemble Learning  

Science Conference Proceedings (OSTI)

For the purpose of achieving accurate and reliable coal /gas outbursts prediction, a coal /gas outbursts prediction algorithm based on selective ensemble learning is presented. The component learners consisted of RS-PNN network, and the redundant component ... Keywords: Coal and gas outburst, selective ensemble learning, RS-PNN classifier, classification

Wang Heng, Shao Liangshan, Liu Shuanhong, Lu Lin

2013-01-01T23:59:59.000Z

40

Can Deployment of Renewable Energy and Energy Efficiency Put Downward Pressure on Natural Gas Prices  

E-Print Network (OSTI)

with the price of natural gas (e.g. , coal or nuclear power,coal- to gas-fired generation. It is worthy of note that natural gas prices

Wiser, Ryan; Bolinger, Mark

2005-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "gas coal renewables" 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

Accounting for fuel price risk when comparing renewable to gas-fired generation: the role of forward natural gas prices  

E-Print Network (OSTI)

Determining the Real Cost: Why Renewable Power is More Cost-Previously Believed. ” Renewable Energy World, 6(2), March-the Risk Profiles of Renewable and Natural Gas Electricity

Bolinger, Mark; Wiser, Ryan; Golove, William

2004-01-01T23:59:59.000Z

42

Restoring Equilibrium to Natural Gas Markets: Can Renewable Energy Help?  

Science Conference Proceedings (OSTI)

Heightened natural gas prices have emerged as a key energy-policy challenge for at least the early part of the 21st century. With the recent run-up in gas prices and the expected continuation of volatile and high prices in the near future, a growing number of voices are calling for increased diversification of energy supplies. Proponents of renewable energy technologies identify these clean energy sources as an important part of the solution. Increased deployment of renewable energy (RE) can hedge natural gas price risk in more than one way, but a recent report by Berkeley Lab evaluates one such benefit in detail: by displacing gas-fired electricity generation, RE reduces natural gas demand and thus puts downward pressure on gas prices. Many recent modeling studies of increased RE deployment have demonstrated that this ''secondary'' effect of lowering natural gas prices could be significant; as a result, this effect is increasingly cited as justification for policies promoting RE. The Berkeley Lab report summarizes recent modeling studies that have evaluated the impact of RE deployment on gas prices, reviews the reasonableness of the results of these studies in light of economic theory and other research, and develops a simple tool that can be used to evaluate the impact of RE on gas prices without relying on a complex national energy model.

Wiser, Ryan; Bolinger, Mark

2005-01-01T23:59:59.000Z

43

Natural Gas Prices Forecast Comparison--AEO vs. Natural Gas Markets  

E-Print Network (OSTI)

coal supply. The natural gas supply covers six categories:renewables, oil supply, natural gas supply, natural gasnation-wide natural gas market, equalizing supply with

Wong-Parodi, Gabrielle; Lekov, Alex; Dale, Larry

2005-01-01T23:59:59.000Z

44

Detecting of Coal Gas Weak Signals Using Lyapunov Exponent under Strong Noise Background  

Science Conference Proceedings (OSTI)

In coal gas monitoring system, the early detecting of gas concentration is key technique for preventing the gas explosion because the coal gas signals are very weak under strong noise background in mining digging laneway. In this paper, the coal gas ... Keywords: Coal gas, weak signals, coal mine underground, Lyapunov exponent, Duffing chaotic oscillator

Ma Xian-Min

2013-01-01T23:59:59.000Z

45

Advanced Coal-Fueled Gas Turbine Program  

SciTech Connect

The objective of the original Request for Proposal was to establish the technological bases necessary for the subsequent commercial development and deployment of advanced coal-fueled gas turbine power systems by the private sector. The offeror was to identify the specific application or applications, toward which his development efforts would be directed; define and substantiate the technical, economic, and environmental criteria for the selected application; and conduct such component design, development, integration, and tests as deemed necessary to fulfill this objective. Specifically, the offeror was to choose a system through which ingenious methods of grouping subcomponents into integrated systems accomplishes the following: (1) Preserve the inherent power density and performance advantages of gas turbine systems. (2) System must be capable of meeting or exceeding existing and expected environmental regulations for the proposed application. (3) System must offer a considerable improvement over coal-fueled systems which are commercial, have been demonstrated, or are being demonstrated. (4) System proposed must be an integrated gas turbine concept, i.e., all fuel conditioning, all expansion gas conditioning, or post-expansion gas cleaning, must be integrated into the gas turbine system.

Horner, M.W.; Ekstedt, E.E.; Gal, E.; Jackson, M.R.; Kimura, S.G.; Lavigne, R.G.; Lucas, C.; Rairden, J.R.; Sabla, P.E.; Savelli, J.F.; Slaughter, D.M.; Spiro, C.L.; Staub, F.W.

1989-02-01T23:59:59.000Z

46

Gas, oil, and coal biotechnology I  

SciTech Connect

This papers presented at the First International IGT Symposium on Gas, Oil, and Coal Biotechnology, New Orleans, Louisiana, December 5-7, 1988, are reproduced in this book. This symposium was designed to provide a forum for the exchange of ideas among leading scientists, engineers, managers, and administrators in this rapidly advancing branch of biotechnology. The presentations and discussions by scientists and engineers from the academic, industrial, and government research laboratories, along with technical program managers and administrators, emphasized the biotechnological approaches to interrelated issues of energy utilization, supply, and environment. The symposium papers are organized in this book under topics that reflect the following program sessions. These topics are: (1) An Emerging Industry, and Programs to Encourage its Development; (2) Coal Biotechnology; (3) Gas Biotechnology; (4) Oil Biotechnology; and (5) Environmental Biotechnology. Twenty-three papers have been indexed separately for inclusion on the data base.

Akin, C.; Smith, J. (eds.)

1990-01-01T23:59:59.000Z

47

Accounting for fuel price risk when comparing renewable to gas-fired generation: the role of forward natural gas prices  

E-Print Network (OSTI)

natural gas is generally perceived to be much more volatile than the price of coal. Price regulation

Bolinger, Mark; Wiser, Ryan; Golove, William

2004-01-01T23:59:59.000Z

48

Accounting for fuel price risk when comparing renewable to gas-fired generation: the role of forward natural gas prices  

E-Print Network (OSTI)

Profiles of Renewable and Natural Gas Electricity Contracts:Price Risk: Using Forward Natural Gas Prices Instead of Gas2001). “Which way the natural gas price: an attempt to

Bolinger, Mark; Wiser, Ryan; Golove, William

2004-01-01T23:59:59.000Z

49

Accounting for fuel price risk when comparing renewable to gas-fired generation: the role of forward natural gas prices  

E-Print Network (OSTI)

Fuel Price Risk: Using Forward Natural Gas Prices Insteadof Gas Price Forecasts to Compare Renewable to Gas-FiredWhich way the natural gas price: an attempt to predict the

Bolinger, Mark; Wiser, Ryan; Golove, William

2004-01-01T23:59:59.000Z

50

ass combustion CO2 capture coal conversion mat on biofuels geologic storage hydrogen renewables  

E-Print Network (OSTI)

ass combustion CO2 capture coal conversion mat on biofuels geologic storage hydrogen renewables storage fuel cells CO2 capture photovoltaics ma conversion biofuels batteries conversion biofuels stion CO Stanford University About GCEP #12;Explored novel approaches for enhanced biofuel production, such as

Nur, Amos

51

Electricity generation from coal and natural gas both increased ...  

U.S. Energy Information Administration (EIA)

Historically, the average fuel cost of operating a combined-cycle natural gas generator exceeded that for a coal-fired generator. Until 2010, ...

52

Electricity generation from coal and natural gas both increased ...  

U.S. Energy Information Administration (EIA)

Coal generation shares declined in some regions ... the share of natural gas-fired power generation is most influenced by the availability of hydroelectric power, ...

53

Coal seam natural gas producing areas (Louisiana) | Open Energy...  

Open Energy Info (EERE)

Data Page Edit with form History Share this page on Facebook icon Twitter icon Coal seam natural gas producing areas (Louisiana) This is the approved revision of this...

54

Prod. of Oil, Gas & Coal - Energy Information Administration  

U.S. Energy Information Administration (EIA)

Production of oil, gas, and coal. Projected supply and disposition of crude oil. The model now uses the EIA’s projections of production, imports, and consumption of ...

55

Optical Gas Sensors for Advanced Coal-Fired Power Plants  

Science Conference Proceedings (OSTI)

Presentation Title, Optical Gas Sensors for Advanced Coal-Fired Power Plants. Author(s), Paul Ohodnicki, Congjun Wang, Douglas Kauffman, Kristi Kauffman, ...

56

Gas transport, sorption, and mechanical response of fractured coal.  

E-Print Network (OSTI)

??Fractured coal exhibits strong and dynamic coupling between fluid transport and mechanical response especially when the pore fluid is a sorbing gas. This complex interaction… (more)

Wang, Shugang

2012-01-01T23:59:59.000Z

57

Direct coal-fired gas turbines for combined cycle plants  

SciTech Connect

The combustion/emissions control island of the CFTCC plant produces cleaned coal combustion gases for expansion in the gas turbine. The gases are cleaned to protect the turbine from flow-path degeneration due to coal contaminants and to reduce environmental emissions to comparable or lower levels than alternate clean coal power plant tedmologies. An advantage of the CFTCC system over other clean coal technologies using gas turbines results from the CFTCC system having been designed as an adaptation to coal of a natural gas-fired combined cycle plant. Gas turbines are built for compactness and simplicity. The RQL combustor is designed using gas turbine combustion technology rather than process plant reactor technology used in other pressurized coal systems. The result is simpler and more compact combustion equipment than for alternate technologies. The natural effect is lower cost and improved reliability. In addition to new power generation plants, CFTCC technology will provide relatively compact and gas turbine compatible coal combustion/emissions control islands that can adapt existing natural gas-fired combined cycle plants to coal when gas prices rise to the point where conversion is economically attractive. Because of the simplicity, compactness, and compatibility of the RQL combustion/emission control island compared to other coal technologies, it could be a primary candidate for such conversions.

Rothrock, J.; Wenglarz, R.; Hart, P.; Mongia, H.

1993-11-01T23:59:59.000Z

58

Apples with apples: accounting for fuel price risk in comparisons of gas-fired and renewable generation  

E-Print Network (OSTI)

considering that natural gas prices (and gas pricein the market, allowing natural gas price volatility to flowincreasingly volatile natural gas prices, renewable energy

Bolinger, Mark; Wiser, Ryan

2003-01-01T23:59:59.000Z

59

Apples with apples: accounting for fuel price risk in comparisons of gas-fired and renewable generation  

E-Print Network (OSTI)

operating costs, long-term fixed-price renewable energyRenewable Energy Gas Options, Gas Storage Option Premium or Storage Costrenewable power is more cost- competitive than previously believed’, Renewable Energy

Bolinger, Mark; Wiser, Ryan

2003-01-01T23:59:59.000Z

60

Advanced coal-fueled gas turbine systems  

DOE Green Energy (OSTI)

Westinghouse's Advanced Coal-Fueled Gas Turbine System Program (DE-AC2l-86MC23167) was originally split into two major phases - a Basic Program and an Option. The Basic Program also contained two phases. The development of a 6 atm, 7 lb/s, 12 MMBtu/hr slagging combustor with an extended period of testing of the subscale combustor, was the first part of the Basic Program. In the second phase of the Basic Program, the combustor was to be operated over a 3-month period with a stationary cascade to study the effect of deposition, erosion and corrosion on combustion turbine components. The testing of the concept, in subscale, has demonstrated its ability to handle high- and low-sulfur bituminous coals, and low-sulfur subbituminous coal. Feeding the fuel in the form of PC has proven to be superior to CWM type feed. The program objectives relative to combustion efficiency, combustor exit temperature, NO[sub x] emissions, carbon burnout, and slag rejection have been met. Objectives for alkali, particulate, and SO[sub x] levels leaving the combustor were not met by the conclusion of testing at Textron. It is planned to continue this testing, to achieve all desired emission levels, as part of the W/NSP program to commercialize the slagging combustor technology.

Not Available

1992-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "gas coal renewables" 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

Production of Substitute Natural Gas from Coal  

DOE Green Energy (OSTI)

The goal of this research program was to develop and demonstrate a novel gasification technology to produce substitute natural gas (SNG) from coal. The technology relies on a continuous sequential processing method that differs substantially from the historic methanation or hydro-gasification processing technologies. The thermo-chemistry relies on all the same reactions, but the processing sequences are different. The proposed concept is appropriate for western sub-bituminous coals, which tend to be composed of about half fixed carbon and about half volatile matter (dry ash-free basis). In the most general terms the process requires four steps (1) separating the fixed carbon from the volatile matter (pyrolysis); (2) converting the volatile fraction into syngas (reforming); (3) reacting the syngas with heated carbon to make methane-rich fuel gas (methanation and hydro-gasification); and (4) generating process heat by combusting residual char (combustion). A key feature of this technology is that no oxygen plant is needed for char combustion.

Andrew Lucero

2009-01-31T23:59:59.000Z

62

Study breaks tenuous truce in coal, gas fuel war  

Science Conference Proceedings (OSTI)

The long-simmering battle between the coal and gas industries for market share in the electric generation market heated up again last week with the release of a report by Energy Ventures Analysis showing that baseload coal-fired plants will cost at least 22 percent less than power from baseload gas plants after 2000.

Kaplan, D.

1994-06-03T23:59:59.000Z

63

New Northeast natural gas pipeline capacity comes on-line - Today ...  

U.S. Energy Information Administration (EIA)

natural gas; prices; states; production; crude oil; consumption; international; coal; generation; renewable; ... of capacity from Clarington, Ohio to York County ...

64

Pages that link to "Coal seam natural gas producing areas (Louisiana...  

Open Energy Info (EERE)

Edit History Share this page on Facebook icon Twitter icon Pages that link to "Coal seam natural gas producing areas (Louisiana)" Coal seam natural gas producing areas...

65

Putting downward pressure on natural gas prices: The impact of renewable energy and energy efficiency  

E-Print Network (OSTI)

2003. Balancing Natural Gas Policy – Fuelin g the Demands ofNatural Gas Price Effects of Energy Efficiency and Renewable Energy Practices and Policies.policies have estimated the impact of increased clean energy deployment on natural gas

Wiser, Ryan; Bolinger, Mark; St. Clair, Matthew

2004-01-01T23:59:59.000Z

66

Coal seam natural gas producing areas (Louisiana) | Department of Energy  

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

Coal seam natural gas producing areas (Louisiana) Coal seam natural gas producing areas (Louisiana) Coal seam natural gas producing areas (Louisiana) < Back Eligibility Commercial Construction Developer Industrial Investor-Owned Utility Municipal/Public Utility Utility Program Info State Louisiana Program Type Environmental Regulations Siting and Permitting Provider Louisiana Department of Natural Resources In order to prevent waste and to avoid the drilling of unnecessary wells and to encourage the development of coal seam natural gas producing areas in Louisiana, the commissioner of conservation is authorized, as provided in this law, to establish a single unit to be served by one or more wells for a coal seam natural gas producing area. Without in any way modifying the authority granted to the commissioner to establish a drilling unit or

67

Compressed Natural Gas and Liquefied Petroleum Gas Conversions: The National Renewable Energy Laboratory's Experience  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Compressed Natural Gas and Liquefied Petroleum Gas Conversions: Compressed Natural Gas and Liquefied Petroleum Gas Conversions: The National Renewable Energy Laboratory's Experience N T Y A U E O F E N E R G D E P A R T M E N I T E D S T A T S O F A E R I C M Compressed Natural Gas and Liquefied Petroleum Gas Conversions: The National Renewable Energy Laboratory's Experience N T Y A U E O F E N E R G D E P A R T M E N I T E D S T A T S O F A E R I C M Robert C. Motta Kenneth J. Kelly William W. Warnock Executive Summary The National Renewable Energy Laboratory (NREL) contracted with conversion companies in six states to convert approximately 900 light-duty Federal fleet vehicles to operate on compressed natural gas (CNG) or liquefied petroleum gas (LPG). The contracts were initiated in order to help the Federal government meet the vehicle acquisition requirements of the Energy Policy Act of 1992 (EPACT) during a period of limited

68

Fact book: synthetic pipeline gas from coal. 1982 update  

SciTech Connect

This book illustrates the major advantages of synthetic pipeline gas from coal. Progress on many of the coal gasification projects envisioned over the past decade has been thwarted by regulatory, permitting, and financing delays. The rationale for developing a synthetic pipeline gas industry remains as strong as ever from the nation's viewpoint, and the pioneer US commercial scale high-Btu coal gasification plant is now under construction-the Great Plains coal gasification plant in North Dakota. Also, the US Synthetic Fuels Corporation is now operational and can move forward to provide the guarantees which are necessary to overcome the financial barriers to a commercial synfuels capability in the United States. Compared to other principal means of utilizing America's vast coal reserves, coal gasification uses coal and land more efficiently, uses less water, emits less air pollutants, requires less capital and results in a lower cost of energy to consumers. (DP)

Not Available

1982-01-01T23:59:59.000Z

69

Steam-injected gas turbines uneconomical with coal gasification equipment  

SciTech Connect

Researchers at the Electric Power Research Institute conducted a series of engineering and economic studies to assess the possibility of substituting steam-injected gas (STIG) turbines for the gas turbines currently proposed for use in British Gas Corporation (BGC)/Lurgi coal gasification-combined cycle plants. The study sought to determine whether steam-injected gas turbines and intercooled steam-injected gas turbines, as proposed by General Electric would be economically competitive with conventional gas and steam turbines when integrated with coal gasification equipment. The results are tabulated in the paper.

1986-09-01T23:59:59.000Z

70

Apples with apples: accounting for fuel price risk in comparisons of gas-fired and renewable generation  

E-Print Network (OSTI)

in the market, allowing natural gas price volatility to flowClearly, the variability of gas prices poses a major risk toincreasingly volatile natural gas prices, renewable energy

Bolinger, Mark; Wiser, Ryan

2003-01-01T23:59:59.000Z

71

Overview of SOFC Anode Interactions with Coal Gas Impurities  

SciTech Connect

An overview of the results of SOFC anode interactions with phosphorus, arsenic, selenium, sulfur, antimony, and hydrogen chloride as single contaminants or in combinations is discussed. Tests were performed using both anode- and electrolyte-supported cells in synthetic and actual coal gas for periods greater than 1000 hours. Post-test analyses were performed to identify reaction products formed and their distribution, and compared to phases expected from thermochemical modeling. The ultimate purpose of this work is to establish maximum permissible concentrations for impurities in coal gas, to aid in the selection of appropriate coal gas clean-up technologies.

O. A. Marina; L. R. Pederson; R. Gemmen; K. Gerdes; H. Finklea; I. B. Celik

2010-03-01T23:59:59.000Z

72

Prediction of light gas composition in coal devolatilization  

Science Conference Proceedings (OSTI)

The chemical percolation devolatilization (CPD) model describes the devolatilization behavior of rapidly heated coal based on the chemical structure of the coal. It predicts the overall char, tar, and light gas yields. This paper presents an improved CPD model with improved capability for predicting light gas composition. This is achieved by incorporating a kinetic model that simulates the release of various light gas species from their respective sources/functional groups in coal. The improved CPD model is validated using experiments with a wire mesh reactor and published experimental observations.13 refs., 9 figs., 1 tab.

Ravichandra S. Jupudi; Vladimir Zamansky; Thomas H. Fletcher [GE Global Research, Bangalore (India)

2009-05-15T23:59:59.000Z

73

Overview of SOFC Anode Interactions with Coal Gas Impurities  

Science Conference Proceedings (OSTI)

An overview of the results of SOFC anode interactions with phosphorus, arsenic, selenium, sulfur, antimony, and hydrogen chloride as single contaminants or in combinations is discussed. Tests were performed using both anode- and electrolyte-supported cells in synthetic and actual coal gas for periods greater than 1000 hours. Post-test analyses were performed to identify reaction products formed and their distribution, and compared to phases expected from thermochemical modeling. The ultimate purpose of this work is to establish maximum permissible concentrations for impurities in coal gas, to aid in the selection of appropriate coal gas clean-up technologies.

Marina, Olga A.; Pederson, Larry R.; Gemmen, Randall; Gerdes, Kirk; Finklea, Harry; Celik, Ismail B.

2010-05-01T23:59:59.000Z

74

Air extraction in gas turbines burning coal-derived gas  

SciTech Connect

In the first phase of this contracted research, a comprehensive investigation was performed. Principally, the effort was directed to identify the technical barriers which might exist in integrating the air-blown coal gasification process with a hot gas cleanup scheme and the state-of-the-art, US made, heavy-frame gas turbine. The guiding rule of the integration is to keep the compressor and the expander unchanged if possible. Because of the low-heat content of coal gas and of the need to accommodate air extraction, the combustor and perhaps, the flow region between the compressor exit and the expander inlet might need to be modified. In selecting a compressed air extraction scheme, one must consider how the scheme affects the air supply to the hot section of the turbine and the total pressure loss in the flow region. Air extraction must preserve effective cooling of the hot components, such as the transition pieces. It must also ensure proper air/fuel mixing in the combustor, hence the combustor exit pattern factor. The overall thermal efficiency of the power plant can be increased by minimizing the total pressure loss in the diffusers associated with the air extraction. Therefore, a study of airflow in the pre- and dump-diffusers with and without air extraction would provide information crucial to attaining high-thermal efficiency and to preventing hot spots. The research group at Clemson University suggested using a Griffith diffuser for the prediffuser and extracting air from the diffuser inlet. The present research establishes that the analytically identified problems in the impingement cooling flow are factual. This phase of the contracted research substantiates experimentally the advantage of using the Griffith diffuser with air extraction at the diffuser inlet.

Yang, Tah-teh; Agrawal, A.K.; Kapat, J.S.

1993-11-01T23:59:59.000Z

75

Testing for market integration crude oil, coal, and natural gas  

SciTech Connect

Prompted by the contemporaneous spike in coal, oil, and natural gas prices, this paper evaluates the degree of market integration both within and between crude oil, coal, and natural gas markets. Our approach yields parameters that can be readily tested against a priori conjectures. Using daily price data for five very different crude oils, we conclude that the world oil market is a single, highly integrated economic market. On the other hand, coal prices at five trading locations across the United States are cointegrated, but the degree of market integration is much weaker, particularly between Western and Eastern coals. Finally, we show that crude oil, coal, and natural gas markets are only very weakly integrated. Our results indicate that there is not a primary energy market. Despite current price peaks, it is not useful to think of a primary energy market, except in a very long run context.

Bachmeier, L.J.; Griffin, J.M. [Texas A& amp; M Univ, College Station, TX (United States)

2006-07-01T23:59:59.000Z

76

Coal liquefaction and gas conversion: Proceedings. Volume 1  

Science Conference Proceedings (OSTI)

Volume I contains papers presented at the following sessions: AR-Coal Liquefaction; Gas to Liquids; and Direct Liquefaction. Selected papers have been processed separately for inclusion in the Energy Science and Technology Database.

Not Available

1993-12-31T23:59:59.000Z

77

Economics of producing substitute natural gas from coal. Occasional pub  

Science Conference Proceedings (OSTI)

Using the cost levelization approach, the economics of producing substitute natural gas (SNG) are examined under different assumptions regarding conversion technologies, coal types and plant financing. A comparison of levelized constant dollar cost-of-service price estimated for Westinghouse and dry bottom Lurgi processes for 1990-2019 shows that SNG from coal produced at western sites is competitive with natural gas and fuel oils.

Rosenberg, J.I.; Ashby, A.B.

1983-07-01T23:59:59.000Z

78

Accounting for fuel price risk: Using forward natural gas prices instead of gas price forecasts to compare renewable to natural gas-fired generation  

E-Print Network (OSTI)

Associates, citing NYMEX natural gas bid-offer spreadAnalysis of the Market for Natural Gas Futures. ” The EnergyProfiles of Renewable and Natural Gas Electricity Contracts:

Bolinger, Mark; Wiser, Ryan; Golove, William

2003-01-01T23:59:59.000Z

79

Comparative Assessment of Coal-and Natural Gas-fired Power Plants under a  

E-Print Network (OSTI)

Comparative Assessment of Coal- and Natural Gas-fired Power Plants under a CO2 Emission Performance standard (EPS) for pulverized coal (PC) and natural gas combined cycle (NGCC) power plants; · Evaluate · Coal-fired Power Plant: Supercritical pulverized coal (SC PC) Illinois #6 Coal Capacity Factor 75

80

Hydrogen Resource Assessment: Hydrogen Potential from Coal, Natural...  

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

2009 Hydrogen Resource Assessment Hydrogen Potential from Coal, Natural Gas, Nuclear, and Hydro Power Anelia Milbrandt and Margaret Mann National Renewable Energy Laboratory 1617...

Note: This page contains sample records for the topic "gas coal renewables" 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

Advanced coal-fueled industrial cogeneration gas turbine system  

SciTech Connect

Advances in coal-fueled gas turbine technology over the past few years, together with recent DOE-METC sponsored studies, have served to provide new optimism that the problems demonstrated in the past can be economically resolved and that the coal-fueled gas turbine can ultimately be the preferred system in appropriate market application sectors. The objective of the Solar/METC program is to prove the technical, economic, and environmental feasibility of a coal-fired gas turbine for cogeneration applications through tests of a Centaur Type H engine system operated on coal fuel throughout the engine design operating range. The five-year program consists of three phases, namely: (1) system description; (2) component development; (3) prototype system verification. A successful conclusion to the program will initiate a continuation of the commercialization plan through extended field demonstration runs.

LeCren, R.T.; Cowell, L.H.; Galica, M.A.; Stephenson, M.D.; Wen, C.S.

1991-07-01T23:59:59.000Z

82

Restoring Equilibrium to Natural Gas Markets: Can Renewable Energy Help?  

E-Print Network (OSTI)

Gas Crisis: Reducing Natural Gas Prices through IncreasedIntroduction Heightened natural gas prices have emerged as aenergy (RE) can hedge natural gas price risk in more than

Wiser, Ryan; Bolinger, Mark

2005-01-01T23:59:59.000Z

83

Community Renewable Energy Success Stories: Landfill Gas-to-Energy Projects  

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

Community Renewable Energy Success Stories: Landfill Gas-to-Energy Community Renewable Energy Success Stories: Landfill Gas-to-Energy Projects Webinar (text version) Community Renewable Energy Success Stories: Landfill Gas-to-Energy Projects Webinar (text version) Below is the text version of the Webinar titled "Community Renewable Energy Success Stories: Landfill Gas-to-Energy Projects," originally presented on July 17, 2012. Recorded Voice: The broadcast is now starting. All attendees are in listen-only mode. Sarah Busche: Hello, everyone. Good afternoon and welcome to today's webinar. This is sponsored by the U.S. Department of Energy. My name is Sarah Busche, and I'm here with Devin Egan, and we're broadcasting live from the National Renewable Energy Laboratory in Golden, Colorado. We're going to give folks

84

Gas Cofiring Assessment for Coal Fired Utility Boilers  

Science Conference Proceedings (OSTI)

This study evaluates gas co-firing as one option for coal-fired utility boilers. It provides electric power generators an objective review of the potential, experience to date, and economics of five gas co-firing technologies, plus a sixth pilot-scale application.

2000-08-23T23:59:59.000Z

85

Overview of SOFC Anode Interactions with Coal Gas Impurities  

Science Conference Proceedings (OSTI)

Efficiencies greater than 50 percent (higher heating value) have been projected for solid oxide fuel cell (SOFC) systems fueled with gasified coal, even with carbon sequestration. Multiple minor and trace components are present in coal that could affect fuel cell performance, however, which vary widely depending on coal origin and type. Minor and trace components have been classified into three groups: elements with low volatility that are likely to remain in the ash, elements that will partition between solid and gas phases, and highly volatile elements that are unlikely to condense. Those in the second group are of most concern. In the following, an overview of the results of SOFC anode interactions with phosphorus, arsenic, selenium, sulfur, antimony, and hydrogen chloride as single contaminants or in combinations is discussed. Tests were performed using both anode- and electrolyte-supported cells in synthetic coal gas. The ultimate purpose of this work is to establish maximum permissible concentrations for impurities in coal gas, to aid in the selection of appropriate coal gas clean-up technologies.

Marina, Olga A.; Pederson, Larry R.; Gemmen, Randall; Gerdes, Kirk; Finklea, Harry; Celik, Ismail B.

2009-08-11T23:59:59.000Z

86

Enhanced Elemental Mercury Removal from Coal-fired Flue Gas by Sulfur-chlorine Compounds  

E-Print Network (OSTI)

removal from flue gas of coal-fired power plants. Environ.Speciation in a 100-MW Coal-Fired Boiler with Low-NOxControl Technologies for Coal-Fired Power Plants, DOE/NETL

Miller, Nai-Qiang Yan-Zan Qu Yao Chi Shao-Hua Qiao Ray Dod Shih-Ger Chang Charles

2008-01-01T23:59:59.000Z

87

Enhanced Elemental Mercury Removal from Coal-fired Flue Gas by Sulfur-chlorine Compounds  

E-Print Network (OSTI)

from flue gas of coal-fired power plants. Environ. Sci. &Technologies for Coal-Fired Power Plants, DOE/NETL Mercurynumber of coal-fired generating plants (1-3). The mercury is

Miller, Nai-Qiang Yan-Zan Qu Yao Chi Shao-Hua Qiao Ray Dod Shih-Ger Chang Charles

2008-01-01T23:59:59.000Z

88

Evaluation of biological conversion of coal-derived synthesis gas  

DOE Green Energy (OSTI)

Foster Wheeler USA Corporation conducted an evaluation study on the biological conversion of synthesis gas to methane which is under development at the University of Arkansas. A conceptual design of an integrated coal-based SNG plant, employing the bioconversion process route, was developed together with the corresponding capital and operating costs. The economics were compared to those for a coal-based SNG plant design using the conventional catalytic route for shift and methanation. 5 refs., 10 figs., 22 tabs.

Fu, R.K.; Mazzella, G.

1990-09-01T23:59:59.000Z

89

Advanced coal-fueled industrial cogeneration gas turbine system  

DOE Green Energy (OSTI)

The objective of the Solar/METC program is to prove the technical, economic, and environmental feasibility of coal-fired gas turbine for cogeneration applications through tests of a Centaur Type H engine system operated on coal fuel throughout the engine design operating range. This quarter, work was centered on design, fabrication, and testing of the combustor, cleanup, fuel specifications, and hot end simulation rig. 2 refs., 59 figs., 29 tabs.

LeCren, R.T.; Cowell, L.H.; Galica, M.A.; Stephenson, M.D.; Wen, C.S.

1990-07-01T23:59:59.000Z

90

Commercialization of coal-fueled gas turbine systems  

SciTech Connect

The overall goal of this program is to develop and demonstrate the technological bases for economically attractive, commercial, coal- fired gas turbine systems. Objectives to accomplish this goal include these: identify candidate technical approaches to meet the challenges of using coal as a turbine fuel, screen the candidate technical approaches by testing their relative performance and evaluating their effects on the economic attractiveness of commercial coal-fueled systems, demonstrate the most promising technologies and associated components in proof-of-concept system tests leading up to commercialization. This paper presents background information on the project, and results on cogeneration systems, combined cycle power plants to include performance and cost.

Wilkes, C.; Wenglarz, R.A.

1992-12-01T23:59:59.000Z

91

Commercialization of coal-fueled gas turbine systems  

SciTech Connect

The overall goal of this program is to develop and demonstrate the technological bases for economically attractive, commercial, coal- fired gas turbine systems. Objectives to accomplish this goal include these: identify candidate technical approaches to meet the challenges of using coal as a turbine fuel, screen the candidate technical approaches by testing their relative performance and evaluating their effects on the economic attractiveness of commercial coal-fueled systems, demonstrate the most promising technologies and associated components in proof-of-concept system tests leading up to commercialization. This paper presents background information on the project, and results on cogeneration systems, combined cycle power plants to include performance and cost.

Wilkes, C.; Wenglarz, R.A.

1992-01-01T23:59:59.000Z

92

Restoring Equilibrium to Natural Gas Markets: Can Renewable Energy Help?  

E-Print Network (OSTI)

Gas Crisis: Reducing Natural Gas Prices through IncreasedHeightened natural gas prices have emerged as a key energy-recent run-up in gas prices and the expected continuation of

Wiser, Ryan; Bolinger, Mark

2005-01-01T23:59:59.000Z

93

Comparing the risk profiles of renewable and natural gas electricity contracts: A summary of the California Department of Water Resources contracts  

E-Print Network (OSTI)

Coal prices are also less variable than natural gas prices,coal-fired power plants are more often fixed-price than contracts for natural gas-

Bachrach, Devra; Wiser, Ryan; Bolinger, Mark; Golove, William

2003-01-01T23:59:59.000Z

94

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

95

Accounting for fuel price risk when comparing renewable to gas-fired generation: the role of forward natural gas prices  

E-Print Network (OSTI)

more volatile than the price of coal. Price regulation incoal-fired generation could reduce wholesale electricity pricecoal is found to be more negative than the beta of gas, given that the price

Bolinger, Mark; Wiser, Ryan; Golove, William

2004-01-01T23:59:59.000Z

96

Demonstration of a Carbonate Fuel Cell on Coal Derived Gas  

E-Print Network (OSTI)

Several studies indicate that carbonate fuel cell systems have the potential to offer efficient, cost competitive, and environmentally preferred power plants operating on natural gas or coal derived gas (“syn-gas”). To date, however, no fuel cell system has run on actual syn-gas. Consequently, the Electric Power Research Institute (“EPRI”) has sponsored a 20 kW carbonate fuel cell pilot plant that will begin operating in March at Destec Energy’s coal gasification plant in Plaquemine, Louisiana. The primary purpose of the test is to determine the effect of syn-gas contaminants on the performance and life of the carbonate fuel cell. This paper will describe the project objectives, design aspects of the pilot facility, and the status of the project.

Rastler, D. M.; Keeler, C. G.; Chi, C. V.

1993-03-01T23:59:59.000Z

97

Opportunities for Synergy Between Natural Gas and Renewable Energy in the Electric Power and Transportation Sectors  

SciTech Connect

Use of both natural gas and renewable energy has grown significantly in recent years. Both forms of energy have been touted as key elements of a transition to a cleaner and more secure energy future, but much of the current discourse considers each in isolation or concentrates on the competitive impacts of one on the other. This paper attempts, instead, to explore potential synergies of natural gas and renewable energy in the U.S. electric power and transportation sectors.

Lee, A.; Zinaman, O.; Logan, J.

2012-12-01T23:59:59.000Z

98

Restoring Equilibrium to Natural Gas Markets: Can Renewable Energy Help?  

E-Print Network (OSTI)

generation, RE reduces natural gas demand and thus putsTheory of a Shifting Natural Gas Demand Curve The reportinward shift in the natural gas demand curve, leading to a

Wiser, Ryan; Bolinger, Mark

2005-01-01T23:59:59.000Z

99

Restoring Equilibrium to Natural Gas Markets: Can Renewable Energy Help?  

E-Print Network (OSTI)

natural gas prices have emerged as a key energy-policynatural gas prices could be significant; as a result, this effect is increasingly cited as justification for policies

Wiser, Ryan; Bolinger, Mark

2005-01-01T23:59:59.000Z

100

APPENDIX E: METHANE EMISSIONS FROM NATURAL GAS PRODUCTION, OIL PRODUCTION, COAL MINING, AND  

E-Print Network (OSTI)

APPENDIX E: METHANE EMISSIONS FROM NATURAL GAS PRODUCTION, OIL PRODUCTION, COAL MINING, AND OTHER PRODUCTION, COAL MINING, AND OTHER SOURCES An Appendix to the Report "A Lifecycle Emissions Model (LEM of natural gas, which is mostly CH4, occurs through natural gas production, oil production, and coal mining

Delucchi, Mark

Note: This page contains sample records for the topic "gas coal renewables" 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

Apples with apples: accounting for fuel price risk in comparisons of gas-fired and renewable generation  

E-Print Network (OSTI)

fixed-price gas supply contracts and natural gas storage. Asnatural gas prices, rather than on prices that can be locked in through futures, swap, or fixed- price physical supplySupply, Renewable Energy Gas Options, Gas Storage Option Premium or Storage Cost Gas Price Falls Gas Price Rises Natural

Bolinger, Mark; Wiser, Ryan

2003-01-01T23:59:59.000Z

102

Study on Data Quality Evaluation of Coal and Gas Outburst  

Science Conference Proceedings (OSTI)

Data quality evaluation is an important part of the process of data mining. This article has build the information quality evaluation index system and evaluation model, determines the quantitative index for each quality dimension, and also demonstrates ... Keywords: coal and gas outburst, data quality, dimension, assessment metadata, data warehousing

Dong Lihong; Hou Yunbing

2010-05-01T23:59:59.000Z

103

Restoring Equilibrium to Natural Gas Markets: Can Renewable Energy Help?  

E-Print Network (OSTI)

lowering gas and electricity bills for consumers. Thirteenelectricity rates and will also reduce residential, commercial, and industrial gas bills.bills as well as an assumed one-for-one pass-through to consumers of reductions in electricity-

Wiser, Ryan; Bolinger, Mark

2005-01-01T23:59:59.000Z

104

Opportunities for Synergy Between Natural Gas and Renewable Energy in the Electric Power and Transportation Sectors  

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

Report Report NREL/TP-6A50-56324 December 2012 Contract No. DE-AC36-08GO28308 Opportunities for Synergy Between Natural Gas and Renewable Energy in the Electric Power and Transportation Sectors April Lee, Owen Zinaman, and Jeffrey Logan National Renewable Energy Laboratory National Renewable Energy Laboratory 15013 Denver West Parkway Golden, CO 80401 303-275-3000 * www.nrel.gov The Joint Institute for Strategic Energy Analysis 15013 Denver West Parkway Golden, CO 80401 303-275-3000 * www.jisea.org Technical Report NREL/TP-6A50-56324 December 2012 Contract No. DE-AC36-08GO28308 Opportunities for Synergy Between Natural Gas and Renewable Energy in the Electric Power and Transportation Sectors April Lee, Owen Zinaman, and Jeffrey Logan

105

Renewable portfolio standards, Greenhouse gas reduction, and Long-Line transmission investments in the WECC  

Science Conference Proceedings (OSTI)

New, long-distance transmission lines to remote areas with concentrations of high-quality renewable resources can help western states meet the challenges of increasing renewable energy procurement and reducing greenhouse gas emissions more cost-effectively than reliance on local resources alone. The approach applied here to the Western Electricity Coordinating Council is useful for an initial determination of the net benefits of long-line transmission between regions with heterogeneous resource quality. (author)

Olson, Arne; Orans, Ren; Allen, Doug; Moore, Jack; Woo, C.K.

2009-11-15T23:59:59.000Z

106

Innovative coal gas cleaning at Sparrows Point Coal Chemical Plant, Maryland for Bethlehem Steel Corporation  

SciTech Connect

In response to the Clean Coal II solicitation, Bethlehem Steel Corporation (BSC) submitted a proposal to the DOE in May 1988. The proposal submitted by BSC describes a Unique integration of commercial technologies developed by Davy/Still Otto to clean coke oven gas being produced at its Sparrows Point, Maryland steel plant. This innovative coke oven gas cleaning system combines secondary gas cooling with hydrogen sulfide and ammonia removal, hydrogen sulfide and ammonia recovery, ammonia destruction and sulfur recovery to produce a cleaner fuel gas for plant use. The primary environmental benefit associated with employing this innovative coke oven gas cleaning system is realized when the fuel gas is burned within the steel plant. Emissions of sulfur dioxide are reduced by more than 60 percent. The removal, recovery and destruction of ammonia eliminates the disposal problems associated with an unmarketable ammonium sulfate by-product. Significant reduction in benzene and hydrogen cyanide emissions are also obtained.

Antrobus, K.; Platts, M. (Davy/Still Otto, Pittsburgh, PA (US)); Harbold, L. (Bethlehem Steel Corp., PA (USA)); Kornosky, R. (Office of Clean Coal Technology, US DOE, Pittsburgh, PA (US))

1990-01-01T23:59:59.000Z

107

Method for enhancing the desulfurization of hot coal gas in a fluid-bed coal gasifier  

DOE Patents (OSTI)

A process and apparatus for providing additional desulfurization of the hot gas produced in a fluid-bed coal gasifier, within the gasifier. A fluid-bed of iron oxide is located inside the gasifier above the gasification bed in a fluid-bed coal gasifier in which in-bed desulfurization by lime/limestone takes place. The product gases leave the gasification bed typically at 1600.degree. to 1800.degree. F. and are partially quenched with water to 1000.degree. to 1200.degree. F. before entering the iron oxide bed. The iron oxide bed provides additional desulfurization beyond that provided by the lime/limestone.

Grindley, Thomas (Morgantown, WV)

1989-01-01T23:59:59.000Z

108

Electrochemical polishing of hydrogen sulfide from coal synthesis gas  

DOE Green Energy (OSTI)

An advanced process has been developed for the separation of H{sub 2}S from coal gasification product streams through an electrochemical membrane. This technology is developed for use in coal gasification facilities providing fuel for cogeneration coal fired electrical power facilities and Molten Carbonate Fuel Cell electrical power facilities. H{sub 2}S is removed from the syn-gas by reduction to the sulfide ion and H at the cathode. The sulfide ion migrates to the anode through a molten salt electrolyte suspended in an inert ceramic matrix. Once at the anode it is oxidized to elemental sulfur and swept away for condensation in an inert gas stream. The syn-gas is enriched with the H{sub 2}. Order-of-magnitude reductions in H{sub 2}S have been repeatably recorded (100 ppm to 10 ppm H{sub 2}S) on a single pass through the cell. This process allows removal of H{sub 2}S without cooling the gas stream and with negligible pressure loss through the separator. Since there are no absorbents used, there is no absorption/regeneration step as with conventional technology. Elemental sulfur is produced as a by-product directly, so there is no need for a Claus process for sulfur recovery. This makes the process economically attractive since it is much less equipment intensive than conventional technology.

Gleason, E.F.; Winnick, J.

1995-11-01T23:59:59.000Z

109

Using Auxiliary Gas Power for CCS Energy Needs in Retrofitted Coal Power Plants  

E-Print Network (OSTI)

1 Using Auxiliary Gas Power for CCS Energy Needs in Retrofitted Coal Power Plants by Sarah Bashadi and Policy Program #12;2 #12;3 Using Auxiliary Gas Power for CCS Energy Needs in Retrofitted Coal Power-combustion capture retrofits are expected to a near-term option for mitigating CO2 emissions from existing coal

110

Comparing the risk profiles of renewable and natural gas electricity contracts: A summary of the California Department of Water Resources contracts  

E-Print Network (OSTI)

CEC). 2000. California Natural Gas Analysis and Issues.2002. Average Price of Natural Gas Sold to Electric Utilityfor investments in natural gas and renewables to complement

Bachrach, Devra; Wiser, Ryan; Bolinger, Mark; Golove, William

2003-01-01T23:59:59.000Z

111

Advanced Coal-Fueled Gas Turbine Program. Final report  

SciTech Connect

The objective of the original Request for Proposal was to establish the technological bases necessary for the subsequent commercial development and deployment of advanced coal-fueled gas turbine power systems by the private sector. The offeror was to identify the specific application or applications, toward which his development efforts would be directed; define and substantiate the technical, economic, and environmental criteria for the selected application; and conduct such component design, development, integration, and tests as deemed necessary to fulfill this objective. Specifically, the offeror was to choose a system through which ingenious methods of grouping subcomponents into integrated systems accomplishes the following: (1) Preserve the inherent power density and performance advantages of gas turbine systems. (2) System must be capable of meeting or exceeding existing and expected environmental regulations for the proposed application. (3) System must offer a considerable improvement over coal-fueled systems which are commercial, have been demonstrated, or are being demonstrated. (4) System proposed must be an integrated gas turbine concept, i.e., all fuel conditioning, all expansion gas conditioning, or post-expansion gas cleaning, must be integrated into the gas turbine system.

Horner, M.W.; Ekstedt, E.E.; Gal, E.; Jackson, M.R.; Kimura, S.G.; Lavigne, R.G.; Lucas, C.; Rairden, J.R.; Sabla, P.E.; Savelli, J.F.; Slaughter, D.M.; Spiro, C.L.; Staub, F.W.

1989-02-01T23:59:59.000Z

112

Compressed natural gas and liquefied petroleum gas conversions: The National Renewable Energy Laboratory`s experience  

DOE Green Energy (OSTI)

The National Renewable Energy Laboratory (NREL) contracted with conversion companies in six states to convert approximately 900 light-duty Federal fleet vehicles to operate on compressed natural gas (CNG) or liquefied petroleum gas (LPG). The contracts were initiated in order to help the Federal government meet the vehicle acquisition requirements of the Energy Policy Act of 1992 (EPACT) during a period of limited original equipment manufacturer (OEM) model availability. Approximately 90% of all conversions were performed on compact of full-size vans and pickups, and 90% of the conversions were to bi-fuel operation. With a positive response from the fleet managers, this program helped the Federal government meet the vehicle acquisition requirements of EPACT for fiscal years 1993 and 1994, despite limited OEM model availability. The conversions also helped to establish the infrastructure needed to support further growth in the use of alternative fuel vehicles. In conclusion, the program has been successful in helping the Federal government meet the vehicle acquisition requirements of EPACT, establishing infrastructure, increasing the displacement of imported oil, and evaluating the emissions performance of converted vehicles. With the relatively widespread availability of OEM vehicles in the 1996 model year, the program is now being phased out.

Motta, R.C.; Kelly, K.J.; Warnock, W.W.

1996-04-01T23:59:59.000Z

113

Slag processing system for direct coal-fired gas turbines  

SciTech Connect

Direct coal-fired gas turbine systems and methods for their operation are provided by this invention. The gas turbine system includes a primary zone for burning coal in the presence of compressed air to produce hot combustion gases and debris, such as molten slag. The turbine system further includes a secondary combustion zone for the lean combustion of the hot combustion gases. The operation of the system is improved by the addition of a cyclone separator for removing debris from the hot combustion gases. The cyclone separator is disposed between the primary and secondary combustion zones and is in pressurized communication with these zones. In a novel aspect of the invention, the cyclone separator includes an integrally disposed impact separator for at least separating a portion of the molten slag from the hot combustion gases.

Pillsbury, Paul W. (Winter Springs, FL)

1990-01-01T23:59:59.000Z

114

Capturing and Sequestering CO2 from a Coal-Fired Power Plant - Assessing the Net Energy and Greenhouse Gas Emissions  

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

Capturing and Sequestering CO Capturing and Sequestering CO 2 from a Coal-fired Power Plant - Assessing the Net Energy and Greenhouse Gas Emissions Pamela L. Spath (pamela_spath @nrel.gov; (303) 275-4460) Margaret K. Mann (margaret_mann @nrel.gov; (303) 275-2921) National Renewable Energy Laboratory 1617 Cole Boulevard Golden, CO 80401 INTRODUCTION It is technically feasible to capture CO 2 from the flue gas of a coal-fired power plant and various researchers are working to understand the fate of sequestered CO 2 and its long term environmental effects. Sequestering CO 2 significantly reduces the CO 2 emissions from the power plant itself, but this is not the total picture. CO 2 capture and sequestration consumes additional energy, thus lowering the plant's fuel to electricity efficiency. To compensate for this, more fossil fuel must be

115

Renewable Natural Gas Clean-upp Challenges and Applications  

E-Print Network (OSTI)

at wide turndown ratio FlFlare Gas 18 To Reformer #12;19 GTI's current project initiatives GTI s current Production at 50kg/day) Electricity Compression CO2 NOx, 12.5 kW to move ADG products of Hydrogen Gasthru) · Hydrocarbon reforming (including inherent CH4) · Sour water-gas shift to achieve H2:CO >3 · Compression

116

Ni/YSZ Anode Interactions with Impurities in Coal Gas  

DOE Green Energy (OSTI)

Performance of solid oxide fuel cell (SOFC) with nickel/zirconia anodes on synthetic coal gas in the presence of low levels of phosphorus, arsenic, selenium, sulfur, hydrogen chloride, and antimony impurities were evaluated. The presence of phosphorus and arsenic led to the slow and irreversible SOFC degradation due to the formation of secondary phases with nickel, particularly close to the gas inlet. Phosphorus and antimony surface adsorption layers were identified as well. Hydrogen chloride and sulfur interactions with the nickel were limited to the surface adsorption only, whereas selenium exposure also led to the formation of nickel selenide for highly polarized cells.

Marina, Olga A.; Pederson, Larry R.; Coyle, Christopher A.; Thomsen, Edwin C.; Coffey, Greg W.

2009-10-16T23:59:59.000Z

117

Slag processing system for direct coal-fired gas turbines  

SciTech Connect

Direct coal-fired gas turbine systems and methods for their operation are provided by this invention. The systems include a primary combustion compartment coupled to an impact separator for removing molten slag from hot combustion gases. Quenching means are provided for solidifying the molten slag removed by the impact separator, and processing means are provided forming a slurry from the solidified slag for facilitating removal of the solidified slag from the system. The released hot combustion gases, substantially free of molten slag, are then ducted to a lean combustion compartment and then to an expander section of a gas turbine.

Pillsbury, Paul W. (Winter Springs, FL)

1990-01-01T23:59:59.000Z

118

Int. J. Oil, Gas and Coal Technology, Vol. 5, No. 1, 2012 1 Copyright 2012 Inderscience Enterprises Ltd.  

E-Print Network (OSTI)

Int. J. Oil, Gas and Coal Technology, Vol. 5, No. 1, 2012 1 Copyright © 2012 Inderscience Reservoir Modelling of Oil and Gas Producing Shale Reservoirs; Case Studies, Int. J. Oil, Gas, and Coal

Mohaghegh, Shahab

119

Comparing the risk profiles of renewable and natural gas electricity contracts: A summary of the California Department of Water Resources contracts  

E-Print Network (OSTI)

Ways to Switch America to Renewable Electricity. Cambridge,Dioxide, and Mercury and a Renewable Portfolio Standard.associated with the use of renewable and natural gas-fired

Bachrach, Devra; Wiser, Ryan; Bolinger, Mark; Golove, William

2003-01-01T23:59:59.000Z

120

2010 Renewable Energy Data Book (Book), Energy Efficiency & Renewable...  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

(2010) 11.3% Nuclear 3.3% Hydropower 7.6% Non-Hydro Renewables 29.2% Coal 33.1% Natural Gas 15.6% Crude Oil U.S. Energy Production (2010): 74.9 Quadrillion Btu U.S. Non-Hydro...

Note: This page contains sample records for the topic "gas coal renewables" 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

Energy Efficiency & Renewable Energy eere.energy.gov Program Name or Ancillary Text eere.energy.gov  

E-Print Network (OSTI)

Energy Efficiency & Renewable Energy eere.energy.gov 1 Program Name or Ancillary Text eereAnnualCapacityAdditions(GW) Other non-Renewable Coal Gas (non-CCGT) Gas (CCGT) Other Renewable Wind 43% wind 42% wind 34% wind18% wind 12% wind 2% wind 3% wind 1% wind 4% wind 0% wind 25% wind #12;WIND AND WATER POWER PROGRAM 8 China

122

Easing the natural gas crisis: Reducing natural gas prices through increased deployment of renewable energy and energy efficiency  

SciTech Connect

Heightened natural gas prices have emerged as a key energy-policy challenge for at least the early part of the 21st century. With the recent run-up in gas prices and the expected continuation of volatile and high prices in the near future, a growing number of voices are calling for increased diversification of energy supplies. Proponents of renewable energy and energy efficiency identify these clean energy sources as an important part of the solution. Increased deployment of renewable energy (RE) and energy efficiency (EE) can hedge natural gas price risk in more than one way, but this paper touches on just one potential benefit: displacement of gas-fired electricity generation, which reduces natural gas demand and thus puts downward pressure on gas prices. Many recent modeling studies of increased RE and EE deployment have demonstrated that this ''secondary'' effect of lowering natural gas prices could be significant; as a result, this effect is increasingly cited as justification for policies promoting RE and EE. This paper summarizes recent studies that have evaluated the gas-price-reduction effect of RE and EE deployment, analyzes the results of these studies in light of economic theory and other research, reviews the reasonableness of the effect as portrayed in modeling studies, and develops a simple tool that can be used to evaluate the impact of RE and EE on gas prices without relying on a complex national energy model. Key findings are summarized.

Wiser, Ryan; Bolinger, Mark; St. Clair, Matt

2004-12-21T23:59:59.000Z

123

Renewable Natural Gas Clean-upp Challenges and Applications  

E-Print Network (OSTI)

and lightweight and can be operated at wide turndown ratio FlFlare Gas 18 To Reformer #12;19 Removal of Trace (Hydrogen Fuel Production at 50kg/day) Electricity Compression CO2 NOx, 12.5 kW to move ADG products

124

Combustion research related to utilization of coal as a gas turbine fuel  

SciTech Connect

A nominal 293 kw (1 MBtu/hr) atmospheric pressure, refractory-lined combustor has been used to investigate the effects of a number of combustor and fuel dependent variables on combustion efficiency and flue gas characteristics for minimally cleaned, coal-derived gas (MCG) and coal water mixtures. The variables which have been evaluated include: percent excess air, air distribution, combustion air preheat temperature, swirl number, fuel feedrate, coal particle size, coal loading in slurry, and slurry viscosity. Characterization of the flue gas included major/minor gas species, alkali levels, and particulate loading, size, and composition. These atmospheric pressure combustion studies accompanied by data from planned pressurized studies on coal-water slurries and hot, minimally cleaned, coal-derived gas will aid in the determination of the potential of these fuels for use in gas turbines.

Davis-Waltermine, D.M.; Anderson, R.J.

1984-06-01T23:59:59.000Z

125

Analysis of safety precautions for coal and gas outburst-hazardous strata  

Science Conference Proceedings (OSTI)

The author analyses coal and gas outbursts and generalizes the available data on the approaches to solving the problematics of these gas-dynamic events in the framework of Czech Republic Grant 'Estimate of the Safety Precautions for Coal and Gas Outburst Hazardous Strata'.

Hudecek, V. [Technical University of Ostrava, Ostrava (Czech Republic)

2008-09-15T23:59:59.000Z

126

Can Deployment of Renewable Energy and Energy Efficiency PutDownward Pressure on Natural Gas Prices  

SciTech Connect

High and volatile natural gas prices have increasingly led to calls for investments in renewable energy and energy efficiency. One line of argument is that deployment of these resources may lead to reductions in the demand for and price of natural gas. Many recent U.S.-based modeling studies have demonstrated that this effect could provide significant consumer savings. In this article we evaluate these studies, and benchmark their findings against economic theory, other modeling results, and a limited empirical literature. We find that many uncertainties remain regarding the absolute magnitude of this effect, and that the reduction in natural gas prices may not represent an increase in aggregate economic wealth. Nonetheless, we conclude that many of the studies of the impact of renewable energy and energy efficiency on natural gas prices appear to have represented this effect within reason, given current knowledge. These studies specifically suggest that a 1% reduction in U.S. natural gas demand could lead to long-term average wellhead price reductions of 0.8% to 2%, and that each megawatt-hour of renewable energy and energy efficiency may benefit natural gas consumers to the tune of at least $7.5 to $20.

Wiser, Ryan; Bolinger, Mark

2005-06-01T23:59:59.000Z

127

Does the presence of pseudovitrinite indicate gas-saturated coals? Some interesting observations from the Gething coals in Canada  

Science Conference Proceedings (OSTI)

The presence of pseudovitrinite at a depth of 1,000 m in the very gassy (up to 862 scf/ton total gas content, as-received basis) but low absolute permeability (0.5 mD), low-volatile bituminous Gething coals in the Canadian Foothills has been documented. Because oxidation is unlikely to occur at such depth, it is reasonable to expect that pseudovitrinite formed as a result of desiccation in a gas-saturated environment prior to the coals being uplifted to their present day depth. This raises the possibility that a coal that contains pseudovitrinite may have moisture content that is below its equilibrium moisture, which leads to higher methane adsorptive capacity compared with the same coal that has normal vitrinite (collotelinite). The presence of inertinite macerals in the coal, derived from wood fibers and charred remnants, has aided in the development and preservation of phyteral porosity and in the formation of interconnected microcavities, which should result in higher micropermeability and aid the flow of gas locally within the coal seam and surrounding strata. The Gething coals in the Highhat corehole share some of these characteristics, which may have important implications on the dynamics of coal-bed methane production. Volumetric strain (matrix shrinkage) of these gassy coals during production is conservatively estimated to be 0.5-0.75%, which may result in an absolute permeability increase of between 5 to 12 times, based on studies on coals of similar rank and gas content in United States basins. Although observations made in this preliminary study do not constitute a proof, they leave open the possibility of using pseudovitrinite, under certain circumstances, as an indicator of improved gas sorptive capacity and enhanced permeability in deep coals.

Gentzis, T. [Petron Resources LP, Frisco, TX (United States)

2008-07-01T23:59:59.000Z

128

Advanced coal-fueled gas turbine systems  

Science Conference Proceedings (OSTI)

Activity towards completing Advanced Turbine Systems (ATS) Phase I work was begun again in December. Effort to complete the Phase I work was temporarily suspended upon receipt of the ATS Phase II RFP the last week in August. The Westinghouse ATS team's efforts were directed at preparing the ATS Phase II proposal which was submitted November 18. It is planned to finish Phase I work and submit the topical report by the end of February 1993. The objective of the four slogging combustor tests conducted during this reporting period (i.e., tests SL3-1 through SL3-4) were to perform sulfur capture experiments using limestoneand iron oxide based sorbents and to collect exhaust vapor phase and solids bound alkali measurements using the Westinghouse and Ames Laboratory alkali probes/monitors. The most significant, if not outstanding result revealed by these tests is that the Ames alkali monitor indicates that the vapor phase sodium is approximately 23--30 ppbw and the vapor phase potassium is approximately 5--20 ppbw. For reference, alkalilevels of 20 ppbw are acceptable in Westinghouse gas turbines fueled with crude oil.

Not Available

1993-02-03T23:59:59.000Z

129

Accounting for fuel price risk: Using forward natural gas prices instead of gas price forecasts to compare renewable to natural gas-fired generation  

Science Conference Proceedings (OSTI)

Against the backdrop of increasingly volatile natural gas prices, renewable energy resources, which by their nature are immune to natural gas fuel price risk, provide a real economic benefit. Unlike many contracts for natural gas-fired generation, renewable generation is typically sold under fixed-price contracts. Assuming that electricity consumers value long-term price stability, a utility or other retail electricity supplier that is looking to expand its resource portfolio (or a policymaker interested in evaluating different resource options) should therefore compare the cost of fixed-price renewable generation to the hedged or guaranteed cost of new natural gas-fired generation, rather than to projected costs based on uncertain gas price forecasts. To do otherwise would be to compare apples to oranges: by their nature, renewable resources carry no natural gas fuel price risk, and if the market values that attribute, then the most appropriate comparison is to the hedged cost of natural gas-fired generation. Nonetheless, utilities and others often compare the costs of renewable to gas-fired generation using as their fuel price input long-term gas price forecasts that are inherently uncertain, rather than long-term natural gas forward prices that can actually be locked in. This practice raises the critical question of how these two price streams compare. If they are similar, then one might conclude that forecast-based modeling and planning exercises are in fact approximating an apples-to-apples comparison, and no further consideration is necessary. If, however, natural gas forward prices systematically differ from price forecasts, then the use of such forecasts in planning and modeling exercises will yield results that are biased in favor of either renewable (if forwards forecasts). In this report we compare the cost of hedging natural gas price risk through traditional gas-based hedging instruments (e.g., futures, swaps, and fixed-price physical supply contracts) to contemporaneous forecasts of spot natural gas prices, with the purpose of identifying any systematic differences between the two. Although our data set is quite limited, we find that over the past three years, forward gas prices for durations of 2-10 years have been considerably higher than most natural gas spot price forecasts, including the reference case forecasts developed by the Energy Information Administration (EIA). This difference is striking, and implies that resource planning and modeling exercises based on these forecasts over the past three years have yielded results that are biased in favor of gas-fired generation (again, presuming that long-term stability is desirable). As discussed later, these findings have important ramifications for resource planners, energy modelers, and policy-makers.

Bolinger, Mark; Wiser, Ryan; Golove, William

2003-08-13T23:59:59.000Z

130

Sticking of Iron Ore Pellets in Direct Reduction with Coal Gas  

Science Conference Proceedings (OSTI)

Abstract Scope, A series of reduction experiments of iron ore pellets with coal gasification gas were carried out in a laboratory scale shaft furnace. The sticking

131

Rock, Mineral, Coal, Oil, and Gas Resources on State Lands (Montana)  

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

This chapter authorizes and regulates prospecting permits and mining leases for the exploration and development of rock, mineral, oil, coal, and gas resources on state lands.

132

The Future of Coal in a Greenhouse Gas Constrained World Howard Herzog1  

E-Print Network (OSTI)

1 The Future of Coal in a Greenhouse Gas Constrained World Howard Herzog1 , James Katzer1 1 M coal can make to the growing world energy demand during a period of increasing concern about global pursue in the short-term so that we can utilize coal in the longer-term and reduce its associated CO2

133

Easing the natural gas crisis: Reducing natural gas prices through increased deployment of renewable energy and energy efficiency  

E-Print Network (OSTI)

MWh of incremental renewable energy production provides, onincremental renewable energy production exceeds 10 billion

Wiser, Ryan; Bolinger, Mark; St. Clair, Matt

2004-01-01T23:59:59.000Z

134

Cornell's conversion of a coal fired heating plant to natural Gas -BACKGROUND: In December 2009, the Combined Heat and Power Plant  

E-Print Network (OSTI)

Cornell's conversion of a coal fired heating plant to natural Gas University began operating with natural gas, instead of the coal-fired generators of the coal that had been stockpiled, the Plant is running completely on natural gas

Keinan, Alon

135

Method for increasing the calorific value of gas produced by the in situ combustion of coal  

DOE Patents (OSTI)

The present invention relates to the production of relatively high Btu gas by the in situ combustion of subterranean coal. The coal bed is penetrated with a horizontally-extending borehole and combustion is initiated in the coal bed contiguous to the borehole. The absolute pressure within the resulting combustion zone is then regulated at a desired value near the pore pressure within the coal bed so that selected quantities of water naturally present in the coal will flow into the combustion zone to effect a hydrogen and carbon monoxide-producing steam-carbon reaction with the hot carbon in the combustion zone for increasing the calorific value of the product gas.

Shuck, Lowell Z. (Morgantown, WV)

1978-01-01T23:59:59.000Z

136

Impact of the Great Plains coal gasification decision on a coal gas industry  

SciTech Connect

In approving the special tariff and financing features of the Great Plains coal-gasification project, the Federal Energy Regulatory Commission took the first major federal action toward encouraging the construction of a commercial-sized synthetic-fuels facility, asserts the law firm of Morley, Caskin and Generelly. Owned by Great Plains Gasification Associates - a partnership of five pipeline companies - the commercial-sized plant qualifies for FERC approval under the commission's RD and D regulations. The special financing terms for the project will require customers of existing natural gas companies to bear the costs incurred by the project regardless of its success in operation or the amount of gas produced for the customer's utilization. This RD and D rate treatment serves to mitigate market forces and thus operates as an effective subsidy for the pipeline industry. If this or a similar regulatory subsidy is extended to other coal-gas projects, the pipeline industry could take the lead in the nation's synfuels program.

Zipp, J.F.

1980-05-08T23:59:59.000Z

137

FROM RENEWABLE TO ALTERNATIVE: WASTE COAL ANDTHE PENNSYLVANIA ALTERNATIVE ENERGY PORTFOLIO STANDARD.  

E-Print Network (OSTI)

??In recent years, state legislatures have begun to apply green classifications to energy sources in efforts to promote renewable energy. As such, they must conduct… (more)

Thomas, Robert

2008-01-01T23:59:59.000Z

138

CE to do 150-MW coal-gas-retrofit design study  

Science Conference Proceedings (OSTI)

Combustion Engineering (CE) has a $5 million DOE contract to design a coal gasifier that will convert eastern coal into a fuel gas and replace the oil and gas now burned in a Gulf States Utility unit. A pilot unit which has been converting Pittsburgh No. 8 seam coal into 110-Btu fuel gas will be scaled up. The company will also begin testing four other coal types. CE finds that retrofitting an air-blown atmospheric pressure system is cost-effective, but warns that the costs of a large-scale intergrated plant are still speculative. (DCK)

Not Available

1980-11-01T23:59:59.000Z

139

Overview of coal consumption and related environmental trends, and implications for greenhouse gas emissions  

SciTech Connect

This paper reviews world and regional trends in coal consumption, and its growing contribution to greenhouse gas emissions. The paper then discusses a number of options within the coal system where greenhouse gas emissions, particularly CO{sub 2}, can be reduced. The commercial status and environmental performance of the main power plant technology options are briefly reviewed.

Johnson, C.J.; Wang, X.

1997-06-01T23:59:59.000Z

140

2 Int. J. Oil, Gas and Coal Technology, Vol. 2, No. 1, 2009 Copyright 2009 Inderscience Enterprises Ltd.  

E-Print Network (OSTI)

2 Int. J. Oil, Gas and Coal Technology, Vol. 2, No. 1, 2009 Copyright © 2009 Inderscience, Gas, and Coal Technology, Vol. 2, No. 1, pp.2­23. Biographical notes: Shahab D. Mohaghegh is currently

Mohaghegh, Shahab

Note: This page contains sample records for the topic "gas coal renewables" 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

Int. J. Oil, Gas and Coal Technology, Vol. 1, Nos. 1/2, 2008 65 Copyright 2008 Inderscience Enterprises Ltd.  

E-Print Network (OSTI)

Int. J. Oil, Gas and Coal Technology, Vol. 1, Nos. 1/2, 2008 65 Copyright © 2008 Inderscience using neural networks', Int. J. Oil, Gas and Coal Technology, Vol. 1, Nos. 1/2, pp.65­80. Biographical

Mohaghegh, Shahab

142

Water Extraction from Coal-Fired Power Plant Flue Gas  

Science Conference Proceedings (OSTI)

The overall objective of this program was to develop a liquid disiccant-based flue gas dehydration process technology to reduce water consumption in coal-fired power plants. The specific objective of the program was to generate sufficient subscale test data and conceptual commercial power plant evaluations to assess process feasibility and merits for commercialization. Currently, coal-fired power plants require access to water sources outside the power plant for several aspects of their operation in addition to steam cycle condensation and process cooling needs. At the present time, there is no practiced method of extracting the usually abundant water found in the power plant stack gas. This project demonstrated the feasibility and merits of a liquid desiccant-based process that can efficiently and economically remove water vapor from the flue gas of fossil fuel-fired power plants to be recycled for in-plant use or exported for clean water conservation. After an extensive literature review, a survey of the available physical and chemical property information on desiccants in conjunction with a weighting scheme developed for this application, three desiccants were selected and tested in a bench-scale system at the Energy and Environmental Research Center (EERC). System performance at the bench scale aided in determining which desiccant was best suited for further evaluation. The results of the bench-scale tests along with further review of the available property data for each of the desiccants resulted in the selection of calcium chloride as the desiccant for testing at the pilot-scale level. Two weeks of testing utilizing natural gas in Test Series I and coal in Test Series II for production of flue gas was conducted with the liquid desiccant dehumidification system (LDDS) designed and built for this study. In general, it was found that the LDDS operated well and could be placed in an automode in which the process would operate with no operator intervention or adjustment. Water produced from this process should require little processing for use, depending on the end application. Test Series II water quality was not as good as that obtained in Test Series I; however, this was believed to be due to a system upset that contaminated the product water system during Test Series II. The amount of water that can be recovered from flue gas with the LDDS is a function of several variables, including desiccant temperature, L/G in the absorber, flash drum pressure, liquid-gas contact method, and desiccant concentration. Corrosion will be an issue with the use of calcium chloride as expected but can be largely mitigated through proper material selection. Integration of the LDDS with either low-grade waste heat and or ground-source heating and cooling can affect the parasitic power draw the LDDS will have on a power plant. Depending on the amount of water to be removed from the flue gas, the system can be designed with no parasitic power draw on the power plant other than pumping loads. This can be accomplished in one scenario by taking advantage of the heat of absorption and the heat of vaporization to provide the necessary temperature changes in the desiccant with the flue gas and precipitates that may form and how to handle them. These questions must be addressed in subsequent testing before scale-up of the process can be confidently completed.

Bruce C. Folkedahl; Greg F. Weber; Michael E. Collings

2006-06-30T23:59:59.000Z

143

Easing the natural gas crisis: Reducing natural gas prices through increased deployment of renewable energy and energy efficiency  

E-Print Network (OSTI)

Efficiency and Renewable Energy Practices and Policies.than Previously Believed. ” Renewable Energy World, 6 (2).to Switch America to Renewable Energy. Cambridge, Mass. :

Wiser, Ryan; Bolinger, Mark; St. Clair, Matt

2004-01-01T23:59:59.000Z

144

Easing the natural gas crisis: Reducing natural gas prices through increased deployment of renewable energy and energy efficiency  

E-Print Network (OSTI)

of Energy Efficiency and Renewable Energy Practices andDetermining the Real Cost: Why Renewable Power is More Cost-than Previously Believed. ” Renewable Energy World, 6 (2).

Wiser, Ryan; Bolinger, Mark; St. Clair, Matt

2004-01-01T23:59:59.000Z

145

STAFF REPORT RENEWABLE POWER IN  

E-Print Network (OSTI)

, landfill gas, levelized cost, local government, natural gas, permitting, Public Interest Energy Research, cogeneration, competitive renewable energy zones, Desert Renewable Energy Conservation Plan, digester gas, financing, geothermal, greenhouse gas emissions, renewable integration, interconnection, land use planning

146

Can Deployment of Renewable Energy and Energy Efficiency Put Downward Pressure on Natural Gas Prices  

E-Print Network (OSTI)

Scientists (UCS). 2004a. Renewable Energy Can Help Ease theA 20 Percent National Renewable Energy Standard Will CreateEfficiency and Renewable Energy Practices and Policies.

Wiser, Ryan; Bolinger, Mark

2005-01-01T23:59:59.000Z

147

The potential impact of renewable energy deployment on natural gas prices in New England  

E-Print Network (OSTI)

Potential Impact of Renewable Energy Deployment on Naturaland in New England. Renewable energy (RE) technologies canof studies show that renewable energy deployment can also

Wiser, Ryan; Bolinger, Mark

2004-01-01T23:59:59.000Z

148

Can Deployment of Renewable Energy and Energy Efficiency Put Downward Pressure on Natural Gas Prices  

E-Print Network (OSTI)

Scientists (UCS). 2004a. Renewable Energy Can Help Ease theA 20 Percent National Renewable Energy Standard Will Createefforts to deploy renewable energy and energy efficiency

Wiser, Ryan; Bolinger, Mark

2005-01-01T23:59:59.000Z

149

Multi-objective fuel policies: Renewable fuel standards versus Fuel greenhouse gas intensity standards  

E-Print Network (OSTI)

report: 2009 Update. REN21 Renewable Energy Policy NetworkRecent Devel- opments in Renewable Technologies: R&Dobjective fuel policies: Renewable fuel standards versus

Rajagopal, Deepak

2010-01-01T23:59:59.000Z

150

Putting downward pressure on natural gas prices: The impact of renewable energy and energy efficiency  

E-Print Network (OSTI)

Scientists. ______ . 2004. Renewable Ene rgy Can Help EaseImpacts of a 10-Percent Renewable Portfolio Standard. SR/Analysis of a 10-Percent Renewable Portfolio Standard. SR/

Wiser, Ryan; Bolinger, Mark; St. Clair, Matthew

2004-01-01T23:59:59.000Z

151

The potential impact of renewable energy deployment on natural gas prices in New England  

E-Print Network (OSTI)

The Potential Impact of Renewable Energy Deployment onand in New England. Renewable energy (RE) technologies cangeneration with fixed-price renewable electricity supply. In

Wiser, Ryan; Bolinger, Mark

2004-01-01T23:59:59.000Z

152

Renewable Energy | Argonne National Laboratory  

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

Renewable Energy Renewable Energy Accelerating the transition to alternative energy sources requires significant improvement in materials, chemicals, processes, and devices. To produce more cost-effective energy sources for the nation, Argonne is focused on renewable energy research. World energy demand is expected to double by 2050, and oil, coal and natural gas will have to supply much of that energy unless we can make renewable and "green" alternatives cheap enough to replace them. Argonne is using its expertise and creativity to explore the development, use and consequences of non-fossil energies. Our renewable energy research helps create groundbreaking technologies that will quickly put new options within our nation's reach. Argonne's work includes research in biofuels, as well as hydropower, solar

153

Assessment of coal gasification/hot gas cleanup based advanced gas turbine systems  

SciTech Connect

The major objectives of the joint SCS/DOE study of air-blown gasification power plants with hot gas cleanup are to: (1) Evaluate various power plant configurations to determine if an air-blown gasification-based power plant with hot gas cleanup can compete against pulverized coal with flue gas desulfurization for baseload expansion at Georgia Power Company's Plant Wansley; (2) determine if air-blown gasification with hot gas cleanup is more cost effective than oxygen-blown IGCC with cold gas cleanup; (3) perform Second-Law/Thermoeconomic Analysis of air-blown IGCC with hot gas cleanup and oxygen-blown IGCC with cold gas cleanup; (4) compare cost, performance, and reliability of IGCC based on industrial gas turbines and ISTIG power island configurations based on aeroderivative gas turbines; (5) compare cost, performance, and reliability of large (400 MW) and small (100 to 200 MW) gasification power plants; and (6) compare cost, performance, and reliability of air-blown gasification power plants using fluidized-bed gasifiers to air-blown IGCC using transport gasification and pressurized combustion.

1990-12-01T23:59:59.000Z

154

An Evaluation of Low-BTU Gas from Coal as an Alternate Fuel for Process Heaters  

E-Print Network (OSTI)

As the price gap between oil and natural gas and coal continues to widen, Monsanto has carefully searched out and examined opportunities to convert fuel use to coal. Preliminary studies indicate that the low-btu gas produced by fixed-bed, air blown gasifiers could potentially replace the natural gas now used in process heaters. The technology is well established and requires less capital than the higher-btu process heaters. Low-btu gas has sufficient heating value and flame temperature to be acceptable fuel for most process heaters. Economics for gas production appear promising, but somewhat uncertain. Rough evaluations indicate rates of return of as much as 30-40%. However, the economics are very dependent on a number of site- specific considerations including: coal vs. natural gas prices, economic life of the gas-consuming facility, quantity of gas required, need for desulfurization, location of gasifiers in relation to gas users, existence of coal unloading and storage facilities, etc. Two of these factors, the difference between coal and natural gas prices and the project life are difficult to predict. The resulting uncertainty has caused Monsanto to pursue coal gasification for process heaters with cautious optimism, on a site by site basis.

Nebeker, C. J.

1982-01-01T23:59:59.000Z

155

Development of biological coal gasification (MicGAS Process)  

Science Conference Proceedings (OSTI)

The overall goal of the project is to develop an advanced, clean coal biogasification (MicGAS) Process. The objectives of the research during FY 1993--94 were to: (1) enhance kinetics of methane production (biogasification, biomethanation) from Texas lignite (TxL) by the Mic-1 consortium isolated and developed at ARCTECH, (2) increase coal solids loading, (3) optimize medium composition, and (4) reduce retention time. A closer analysis of the results described here indicate that biomethanation of TxL at >5% solids loading is feasible through appropriate development of nutrient medium and further adaptation of the microorganisms involved in this process. Further understanding of the inhibitory factors and some biochemical manipulations to overcome those inhibitions will hasten the process considerably. Results are discussed on the following: products of biomethanation and enhance of methane production including: bacterial adaptation; effect of nutrient amendment substitutes; effects of solids loading; effect of initial pH of the culture medium; effect of hydrogen donors and carbon balance.

Walia, D.S.; Srivastava, K.C.

1994-10-01T23:59:59.000Z

156

Silica membranes for hydrogen separation from coal gas. Final report  

DOE Green Energy (OSTI)

This project is a continuation of a previous DOE-UCR project (DE-FG22- 89PC89765) dealing with the preparation of silica membranes highly permselective to hydrogen at elevated temperatures, suitable for hydrogen separation from coal gas. The membranes prepared in the previous project had very high selectivity but relatively low permeance. Therefore, the general objectives of this project were to improve the permeance of these membranes and to obtain fundamental information about membrane structure and properties. The specific objectives were: (1) to explore new silylation reagents and reaction conditions with the purpose of reducing the thickness and increasing the permeance of silica membranes prepared by chemical vapor deposition (CVD), (2) to characterize the membrane structure, (3) to delineate mechanism and kinetics of deposition, (4) to measure the permeability of silica layers at different extents of deposition, and (5) to mathematically model the relationship between structure and deposition kinetics.

Gavalas, G.R.

1996-01-01T23:59:59.000Z

157

Can Deployment of Renewable Energy and Energy Efficiency Put Downward Pressure on Natural Gas Prices  

E-Print Network (OSTI)

estimates for other non-renewable-energy commodities, namelyfor other non-renewable, non-energy commodities. Although we

Wiser, Ryan; Bolinger, Mark

2005-01-01T23:59:59.000Z

158

Accounting for fuel price risk: Using forward natural gas prices instead of gas price forecasts to compare renewable to natural gas-fired generation  

DOE Green Energy (OSTI)

Against the backdrop of increasingly volatile natural gas prices, renewable energy resources, which by their nature are immune to natural gas fuel price risk, provide a real economic benefit. Unlike many contracts for natural gas-fired generation, renewable generation is typically sold under fixed-price contracts. Assuming that electricity consumers value long-term price stability, a utility or other retail electricity supplier that is looking to expand its resource portfolio (or a policymaker interested in evaluating different resource options) should therefore compare the cost of fixed-price renewable generation to the hedged or guaranteed cost of new natural gas-fired generation, rather than to projected costs based on uncertain gas price forecasts. To do otherwise would be to compare apples to oranges: by their nature, renewable resources carry no natural gas fuel price risk, and if the market values that attribute, then the most appropriate comparison is to the hedged cost of natural gas-fired generation. Nonetheless, utilities and others often compare the costs of renewable to gas-fired generation using as their fuel price input long-term gas price forecasts that are inherently uncertain, rather than long-term natural gas forward prices that can actually be locked in. This practice raises the critical question of how these two price streams compare. If they are similar, then one might conclude that forecast-based modeling and planning exercises are in fact approximating an apples-to-apples comparison, and no further consideration is necessary. If, however, natural gas forward prices systematically differ from price forecasts, then the use of such forecasts in planning and modeling exercises will yield results that are biased in favor of either renewable (if forwards < forecasts) or natural gas-fired generation (if forwards > forecasts). In this report we compare the cost of hedging natural gas price risk through traditional gas-based hedging instruments (e.g., futures, swaps, and fixed-price physical supply contracts) to contemporaneous forecasts of spot natural gas prices, with the purpose of identifying any systematic differences between the two. Although our data set is quite limited, we find that over the past three years, forward gas prices for durations of 2-10 years have been considerably higher than most natural gas spot price forecasts, including the reference case forecasts developed by the Energy Information Administration (EIA). This difference is striking, and implies that resource planning and modeling exercises based on these forecasts over the past three years have yielded results that are biased in favor of gas-fired generation (again, presuming that long-term stability is desirable). As discussed later, these findings have important ramifications for resource planners, energy modelers, and policy-makers.

Bolinger, Mark; Wiser, Ryan; Golove, William

2003-08-13T23:59:59.000Z

159

Renewable LNG: Update on the World's Largest Landfill Gas to LNG Plant  

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

LNG LNG Update on the world's largest landfill gas to LNG plant Mike McGowan Head of Government Affairs Linde NA, Inc. June 12, 2012 $18.3 billion global sales A leading gases and engineering company Linde North America Profile $2.3 billion in gases sales revenue in North America in 2011 5,000 employees throughout the U.S., Canada and the Caribbean Supplier of compressed and cryogenic gases and technology Atmospheric gases - oxygen, nitrogen, argon Helium LNG and LPG Hydrogen Rare gases Plant engineering and supply LNG Petrochemicals Natural gas processing Atmospheric gases 3 Linde's alternative fuels portfolio Green hydrogen production - Magog, Quebec Renewable liquefied natural gas production - Altamont, CA Biogas fueling, LNG import terminal - Sweden

160

Oil and Natural Gas Market Supply and Renewable Portfolio Standard Impacts of Selected Provisions of H.R. 3221  

Gasoline and Diesel Fuel Update (EIA)

Oil and Natural Gas Market Supply and Renewable Portfolio Standard Impacts of Selected Provisions of Oil and Natural Gas Market Supply and Renewable Portfolio Standard Impacts of Selected Provisions of H.R. 3221 1 Oil and Natural Gas Market Supply and Renewable Portfolio Standard Impacts of Selected Provisions of H.R. 3221 November 2007 This paper responds to an October 31, 2007, request from Representatives Barton, McCrery, and Young. Their letter, a copy of which is provided as Appendix A, asks the Energy Information Administration (EIA) to assess selected provisions of H.R. 3221, the energy bill adopted by the House of Representatives in early August 2007. EIA was asked to focus on Title VII, dealing with energy on Federal lands; Section 9611, which would establish a Federal renewable portfolio standard (RPS) for certain electricity sellers; and Section 13001, which would eliminate the

Note: This page contains sample records for the topic "gas coal renewables" 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

Analysis of the market and product costs for coal-derived high Btu gas  

Science Conference Proceedings (OSTI)

DOE analyzed the market potential and economics of coal-derived high-Btu gas using supply and demand projections that reflect the effects of natural gas deregulation, recent large oil-price rises, and new or pending legislation designed to reduce oil imports. The results indicate that an increasingly large market for supplemental gas should open up by 1990 and that SNG from advanced technology will probably be as cheap as gas imports over a wide range of assumptions. Although several studies suggest that a considerable market for intermediate-Btu gas will also exist, the potential supplemental gas demand is large enough to support both intermediate - and high-Btu gas from coal. Advanced SNG-production technology will be particularly important for processing the US's abundant, moderately to highly caking Eastern coals, which current technology cannot handle economically.

Not Available

1980-12-01T23:59:59.000Z

162

Process for the production of fuel gas from coal  

DOE Patents (OSTI)

An improved apparatus and process for the conversion of hydrocarbonaceous materials, such as coal, to more valuable gaseous products in a fluidized bed gasification reaction and efficient withdrawal of agglomerated ash from the fluidized bed is disclosed. The improvements are obtained by introducing an oxygen containing gas into the bottom of the fluidized bed through a separate conduit positioned within the center of a nozzle adapted to agglomerate and withdraw the ash from the bottom of the fluidized bed. The conduit extends above the constricted center portion of the nozzle and preferably terminates within and does not extend from the nozzle. In addition to improving ash agglomeration and withdrawal, the present invention prevents sintering and clinkering of the ash in the fluidized bed and permits the efficient recycle of fine material recovered from the product gases by contacting the fines in the fluidized bed with the oxygen as it emanates from the conduit positioned within the withdrawal nozzle. Finally, the present method of oxygen introduction permits the efficient recycle of a portion of the product gases to the reaction zone to increase the reducing properties of the hot product gas.

Patel, Jitendra G. (Bolingbrook, IL); Sandstrom, William A. (Chicago, IL); Tarman, Paul B. (Elmhurst, IL)

1982-01-01T23:59:59.000Z

163

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

164

Putting downward pressure on natural gas prices: The impact of renewable energy and energy efficiency  

DOE Green Energy (OSTI)

Increased deployment of renewable energy (RE) and energy efficiency (EE) is expected to reduce natural gas demand and in turn place downward pressure on gas prices. A number of recent modeling studies include an evaluation of this effect. Based on data compiled from those studies summarized in this paper, each 1% reduction in national natural gas demand appears likely to lead to a long-term average wellhead gas price reduction of 0.75% to 2.5%, with some studies predicting even more sizable reductions. Reductions in wellhead prices will reduce wholesale and retail electricity rates, and will also reduce residential, commercial, and industrial gas bills. We further find that many of these studies appear to represent the potential impact of RE and EE on natural gas prices within the bounds of current knowledge, but that current knowledge of how to estimate this effect is extremely limited. While more research is therefore needed, existing studies suggest that it is not unreasonable to expect that any increase in consumer electricity costs attributable to RE and/or EE deployment may be substantially offset by the corresponding reduction in delivered natural gas prices. This effect represents a wealth transfer (from natural gas producers to consumers) rather than a net gain in social welfare, and is therefore not a standard motivation for policy intervention on economic grounds. Reducing gas prices and thereby redistributing wealth may still be of importance in policy circles, however, and may be viewed in those circles as a positive ancillary effect of RE and EE deployment.

Wiser, Ryan; Bolinger, Mark; St. Clair, Matthew

2004-05-20T23:59:59.000Z

165

168 Int. J. Oil, Gas and Coal Technology, Vol. 2, No. 2, 2009 Copyright 2009 Inderscience Enterprises Ltd.  

E-Print Network (OSTI)

168 Int. J. Oil, Gas and Coal Technology, Vol. 2, No. 2, 2009 Copyright © 2009 Inderscience.Y. (2009) `Geology and coal potential of Somaliland', Int. J. Oil, Gas and Coal Technology, Vol. 2, No. 2, pp.168­185. Biographical notes: Mohammed Y. Ali has a degree in Exploration Geology, MSc

Ali, Mohammed

166

Coal....  

U.S. Energy Information Administration (EIA)

DOE EIA WEEKLY COAL ... Coal Prices and Earnings (updated April 28, 2004) Spot coal prices in the East rose steadily since Labor Day 2003, with rapid escalations ...

167

Coal....  

U.S. Energy Information Administration (EIA)

DOE EIA WEEKLY COAL ... Coal Prices and Earnings (updated September 26) The average spot prices for reported coal purchases rose once again ...

168

How much coal, natural gas, or petroleum is used to generate a ...  

U.S. Energy Information Administration (EIA)

How much coal, natural gas, or petroleum is used to generate a kilowatt-hour of electricity? The amount of fuel used to generate electricity depends on the efficiency ...

169

Steady-state model for estimating gas production from underground coal gasification  

Science Conference Proceedings (OSTI)

A pseudo-one-dimensional channel model has been developed to estimate gas production from underground coal gasification. The model incorporates a zero-dimensional steady-state cavity growth submodel and models mass transfer from the bulk gas to the coal wall using a correlation for natural convection. Simulations with the model reveal that the gas calorific value is sensitive to coal reactivity and the exposed reactive surface area per unit volume in the channel. A comparison of model results with several small-scale field trials conducted at Centralia in the U.S.A. show that the model can make good predictions of the gas production and composition under a range of different operating conditions, including operation with air and steam/oxygen mixtures. Further work is required to determine whether the model formulation is also suitable for simulating large-scale underground coal gasification field trials.

Greg Perkins; Veena Sahajwalla [University of New South Wales, Sydney, NSW (Australia). School of Materials Science and Engineering

2008-11-15T23:59:59.000Z

170

The competition between coal and natural gas : the importance of sunk costs  

E-Print Network (OSTI)

This paper explores the seeming paradox between the predominant choice of natural gas for capacity additions to generate electricity in the United States and the continuing large share of coal in meeting incremental ...

Ellerman, A. Denny

1996-01-01T23:59:59.000Z

171

Accounting for fuel price risk when comparing renewable togas-fired generation: the role of forward natural gas prices  

SciTech Connect

Unlike natural gas-fired generation, renewable generation (e.g., from wind, solar, and geothermal power) is largely immune to fuel price risk. If ratepayers are rational and value long-term price stability, then--contrary to common practice--any comparison of the levelized cost of renewable to gas-fired generation should be based on a hedged gas price input, rather than an uncertain gas price forecast. This paper compares natural gas prices that can be locked in through futures, swaps, and physical supply contracts to contemporaneous long-term forecasts of spot gas prices. We find that from 2000-2003, forward gas prices for terms of 2-10 years have been considerably higher than most contemporaneous long-term gas price forecasts. This difference is striking, and implies that comparisons between renewable and gas-fired generation based on these forecasts over this period have arguably yielded results that are biased in favor of gas-fired generation.

Bolinger, Mark; Wiser, Ryan; Golove, William

2004-07-17T23:59:59.000Z

172

Integrated Warm Gas Multicontaminant Cleanup Technologies for Coal-Derived Syngas  

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

Integrated Warm Gas Multicontaminant Integrated Warm Gas Multicontaminant Cleanup Technologies for Coal-Derived Syngas Description Integrated Gasification Combined Cycle (IGCC) technology offers a means to utilize coal -the most abundant fuel in the United States-to produce a host of products, ranging from electricity to value-added chemicals like transportation fuels and hydrogen, in an efficient, environmentally friendly manner. However, the overall cost (capital, operating,

173

Putting downward pressure on natural gas prices: The impact of renewable energy and energy efficiency  

E-Print Network (OSTI)

increase in costs associated with renewable energy or energydesigned renewable energy program with less-binding costcost caps are reached, ensuring that consumers pay a capped price for some number of proxy renewable energy

Wiser, Ryan; Bolinger, Mark; St. Clair, Matthew

2004-01-01T23:59:59.000Z

174

Can Deployment of Renewable Energy and Energy Efficiency Put Downward Pressure on Natural Gas Prices  

E-Print Network (OSTI)

Dioxide, and Mercury and a Renewable Portfolio Standard. SR/Impacts of a 10-Percent Renewable Portfolio Standard. SR/Analysis of a 10-Percent Renewable Portfolio Standard. SR/

Wiser, Ryan; Bolinger, Mark

2005-01-01T23:59:59.000Z

175

Modeling of gas generation from the Cameo coal zone in the Piceance Basin Colorado  

Science Conference Proceedings (OSTI)

The gas generative potential of the Cretaceous Cameo coal in the Piceance Basin, northwestern Colorado, was evaluated quantitatively by sealed gold tube pyrolysis. The H/C and O/C elemental ratios show that pyrolyzed Cameo coal samples follow the Van Krevelen humic coal evolution pathway, reasonably simulating natural coal maturation. Kinetic parameters (activation energy and frequency factor) for gas generation and vitrinite reflectance (R{sub o}) changes were calculated from pyrolysis data. Experimental R{sub o} results from this study are not adequately predicted by published R{sub o} kinetics and indicate the necessity of deriving basin-specific kinetic parameters when building predictive basin models. Using derived kinetics for R{sub o}, evolution and gas generation, basin modeling was completed for 57 wells across the Piceance Basin, which enabled the mapping of coal-rank and coalbed gas potential. Quantities of methane generated at approximately 1.2% R{sub o} are about 300 standard cubic feet per ton (scf/ton) and more than 2500 scf/ton (in-situ dry-ash-free coal) at R{sub o}, values reaching 1.9%. Gases generated in both low- and high-maturity coals are less wet, whereas the wetter gas is expected where R{sub o} is approximately 1.4-1.5%. As controlled by regional coal rank and net coal thickness, the largest in-place coalbed gas resources are located in the central part of the basin, where predicted volumes exceed 150 bcf/mi, excluding gases in tight sands.

Zhang, E.; Hill, R.J.; Katz, B.J.; Tang, Y.C. [Shell Exploration and Production Co., BTC, Houston, TX (United States)

2008-08-15T23:59:59.000Z

176

Easing the natural gas crisis: Reducing natural gas prices through increased deployment of renewable energy and energy efficiency  

E-Print Network (OSTI)

RE and EE may also put downward pressure on coal prices, theelasticity of coal prices to altered demand conditions isthe impact of RE and EE on coal prices is probably modest

Wiser, Ryan; Bolinger, Mark; St. Clair, Matt

2004-01-01T23:59:59.000Z

177

Coal....  

U.S. Energy Information Administration (EIA)

Coal Prices and Earnings (updated August 12) According to Platts Coal Outlook’s Weekly Price Survey (August 11), the ...

178

Coal....  

U.S. Energy Information Administration (EIA)

Coal Prices and Earnings (updated September 2) The average spot prices for coal traded last week were relatively ...

179

Renewable Energy | Open Energy Information  

Open Energy Info (EERE)

Renewable Energy Renewable Energy Jump to: navigation, search This article is a stub. You can help OpenEI by expanding it. Renewable Energy is energy obtained from sources which are practically inexhaustible.[1] Prominent examples include solar energy, wind energy, and geothermal energy. The table below lists some of the conversion technologies that are used to harness the energy from these resources[2] . Renewable Resource Energy Conversion Technology Biomass, solid fuels Combustion (direct-fired, cofiring with coal); Gasification/Pyrolysis Biomass, gas and liquid fuels Fuel Cells Geothermal Dry steam electric; Flash electric; Binary cycle electric; Direct use; Geothermal heat pumps Solar Photovoltaics (PV); Concentrating solar thermal electric (parabolic trough, parabolic trough, power tower); Thermal water heating; Absorption chilling

180

Should we transport coal, gas, or electricity: cost, efficiency, and environmental implications  

Science Conference Proceedings (OSTI)

The authors examine the life cycle costs, environmental discharges, and deaths of moving coal via rail, coal to synthetic natural gas via pipeline, and electricity via wire from the Powder River Basin (PRB) in Wyoming to Texas. Which method has least social cost depends on how much additional investment in rail line, transmission, or pipeline infrastructure is required, as well as how much and how far energy is transported. If the existing rail lines have unused capacity, coal by rail is the cheapest method (up to 200 miles of additional track could be added). If no infrastructure exists, greater distances and larger amounts of energy favor coal by rail and gasified coal by pipeline over electricity transmission. For 1,000 miles and 9 gigawatts of power, a gas pipeline is cheapest, has less environmental discharges, uses less land, and is least obtrusive. 28 refs., 4 figs., 3 tabs.

Joule A. Bergerson; Lester B. Lave [Carnegie Mellon University, Pittsburgh, PA (US)

2005-08-15T23:59:59.000Z

Note: This page contains sample records for the topic "gas coal renewables" 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

Proposal to Negotiate, without competitive tendering, the renewal of hte contract for hte supply of natural gas for the heating plant on the Prévessin Site  

E-Print Network (OSTI)

Proposal to Negotiate, without competitive tendering, the renewal of hte contract for hte supply of natural gas for the heating plant on the Prévessin Site

1994-01-01T23:59:59.000Z

182

Can Deployment of Renewable Energy and Energy Efficiency Put Downward Pressure on Natural Gas Prices  

E-Print Network (OSTI)

RE and EE may also put downward pressure on coal prices, theelasticity of coal prices to altered demand conditions isthe impact of RE and EE on coal prices is probably modest

Wiser, Ryan; Bolinger, Mark

2005-01-01T23:59:59.000Z

183

Advanced coal-fueled industrial cogeneration gas turbine system. Annual report, June 1990--June 1991  

SciTech Connect

Advances in coal-fueled gas turbine technology over the past few years, together with recent DOE-METC sponsored studies, have served to provide new optimism that the problems demonstrated in the past can be economically resolved and that the coal-fueled gas turbine can ultimately be the preferred system in appropriate market application sectors. The objective of the Solar/METC program is to prove the technical, economic, and environmental feasibility of a coal-fired gas turbine for cogeneration applications through tests of a Centaur Type H engine system operated on coal fuel throughout the engine design operating range. The five-year program consists of three phases, namely: (1) system description; (2) component development; (3) prototype system verification. A successful conclusion to the program will initiate a continuation of the commercialization plan through extended field demonstration runs.

LeCren, R.T.; Cowell, L.H.; Galica, M.A.; Stephenson, M.D.; Wen, C.S.

1991-07-01T23:59:59.000Z

184

Coal/biomass fuels and the gas turbine: Utilization of solid fuels and their derivatives  

Science Conference Proceedings (OSTI)

This paper discusses key design and development issues in utilizing coal and other solid fuels in gas turbines. These fuels may be burned in raw form or processed to produce liquids or gases in more or less refined forms. The use of such fuels in gas turbines requires resolution of technology issues which are of little or no consequence for conventional natural gas and refined oil fuels. For coal, these issues are primarily related to the solid form in which coal is naturally found and its high ash and contaminant levels. Biomass presents another set of issues similar to those of coal. Among the key areas discussed are effects of ash and contaminant level on deposition, corrosion, and erosion of turbine hot parts, with particular emphasis on deposition effects.

DeCorso, M. [Power Tech Associates, Inc., Paramus, NJ (United States); Newby, R. [Westinghouse Electric Corp., Pittsburgh, PA (United States); Anson, D. [Battelle, Columbus, OH (United States); Wenglarz, R. [Allison Engine Co., Indianapolis, IN (United States); Wright, I. [Oak Ridge National Lab., TN (United States)

1996-06-01T23:59:59.000Z

185

Method and apparatus for enhancing the desulfurization of hot coal gas in a fluid-bed coal gasifier  

DOE Patents (OSTI)

A process and apparatus for providing additional desulfurization of the hot gas produced in a fluid-bed coal gasifier, within the gasifier is described. A fluid-bed of iron oxide is located inside the gasifier above the gasification bed in a fluid-bed coal gasifier in which in-bed desulfurization by lime/limestone takes place. The product gases leave the gasification bed typically at 1600 to 1800 F and are partially quenched with water to 1000 to 1200 F before entering the iron oxide bed. The iron oxide bed provides additional desulfurization beyond that provided by the lime /limestone. 1 fig.

Grindley, T.

1988-04-05T23:59:59.000Z

186

Heavy duty gas turbine combustion tests with simulated low BTU coal gas  

SciTech Connect

There is an increasing industry interest in integrated gas turbine combined cycle plants in which coal gasifiers provide the fuel for the gas turbines. Some gasifier plant designs, including the air-blown processes, some integrated oxygen blown processes and some oxygen-blown processes followed by heavy moisturization, produce fuel gases which have lower heating values ranging from 130 to below 100 BTU/scf for which there is little gas turbine combustion experience. This program has the objectives to: Parametrically determine the effects of moisture, nitrogen and carbon dioxide as diluents so that the combustion characteristics of many varieties of gasification product gases can be reasonably predicted without physically testing each specific gas composition; determine emissions characteristics including NO[sub x], CO, levels etc. associated with each of the diluents; operate with two syngas compositions; DOE chosen air-blown and integrated oxygen-blown, to confirm that the combustion characteristics are in line with predictions; determine if logical'' refinements to the fuel nozzle will yield improved performance for LBTU fuels; determine the conversion rate of ammonia to NO[sub x]; determine the effects of methane inclusion in the fuel.

Ekstrom, T.E.; Battista, R.A.; Maxwell, G.P.

1992-01-01T23:59:59.000Z

187

Heavy duty gas turbine combustion tests with simulated low BTU coal gas  

DOE Green Energy (OSTI)

There is an increasing industry interest in integrated gas turbine combined cycle plants in which coal gasifiers provide the fuel for the gas turbines. Some gasifier plant designs, including the air-blown processes, some integrated oxygen blown processes and some oxygen-blown processes followed by heavy moisturization, produce fuel gases which have lower heating values ranging from 130 to below 100 BTU/scf for which there is little gas turbine combustion experience. This program has the objectives to: Parametrically determine the effects of moisture, nitrogen and carbon dioxide as diluents so that the combustion characteristics of many varieties of gasification product gases can be reasonably predicted without physically testing each specific gas composition; determine emissions characteristics including NO{sub x}, CO, levels etc. associated with each of the diluents; operate with two syngas compositions; DOE chosen air-blown and integrated oxygen-blown, to confirm that the combustion characteristics are in line with predictions; determine if ``logical`` refinements to the fuel nozzle will yield improved performance for LBTU fuels; determine the conversion rate of ammonia to NO{sub x}; determine the effects of methane inclusion in the fuel.

Ekstrom, T.E.; Battista, R.A.; Maxwell, G.P.

1992-12-31T23:59:59.000Z

188

Heavy duty gas turbine combustion tests with simulated low BTU coal gas  

DOE Green Energy (OSTI)

There is an increasing industry interest in integrated gas turbine combined cycle plants in which coal gasifiers provide the fuel for the gas turbines. Some gasifier plant designs, including the air-blown processes, some integrated oxygen blown processes and some oxygen-blown processes followed by heavy moisturization, produce fuel gases which have lower heating values ranging from 130 to below 100 BTU/scf for which there is little gas turbine combustion experience. This program has the objectives to: Parametrically determine the effects of moisture, nitrogen and carbon dioxide as diluents so that the combustion characteristics of many varieties of gasification product gases can be reasonably predicted without physically testing each specific gas composition; determine emissions characteristics including NO[sub x], CO, levels etc. associated with each of the diluents; operate with two syngas compositions; DOE chosen air-blown and integrated oxygen-blown, to confirm that the combustion characteristics are in line with predictions; determine if logical'' refinements to the fuel nozzle will yield improved performance for LBTU fuels; determine the conversion rate of ammonia to NO[sub x]; determine the effects of methane inclusion in the fuel.

Ekstrom, T.E.; Battista, R.A.; Maxwell, G.P.

1992-01-01T23:59:59.000Z

189

Data Corresponding to 2010 Renewable Energy Data Book | OpenEI  

Open Energy Info (EERE)

Data Corresponding to 2010 Renewable Energy Data Book Data Corresponding to 2010 Renewable Energy Data Book Dataset Summary Description The US Department of Energy (DOE), via the office of Energy Efficiency and Renewable Energy (EERE), publishes an annual Renewable Energy Data Book. Provided here is the data corresponding to the 2010 Renewable Energy Data Book. The types of data available include: US energy production and consumption (2000 - 2009) for all fuel sources (coal, natural gas, petroleum, nuclear, hydro, and non-hydro renewables); total consumption by sector; US renewable energy capacity and generation (2000 - 2009); as well as global renewable energy capacity and generation (2000 - 2009). Source NREL Date Released August 01st, 2010 (4 years ago) Date Updated Unknown Keywords coal consumption

190

Liquefaction and desulfurization of coal using synthesis gas  

DOE Patents (OSTI)

A process for desulfurizing and liquefying coal by heating said coal at a temperature of 375.degree.-475.degree. C in the presence of a slurry liquid, hydrogen, carbon monoxide, steam, and a catalyst comprising a desulfurization catalyst and an alkali metal salt.

Fu, Yuan C. (Bethel Park, PA)

1977-03-08T23:59:59.000Z

191

Repowering oil-fired boilers with combustion turbines fired with gas from coal. Final report  

Science Conference Proceedings (OSTI)

The results of a study on repowering of oil fired reheat steam plants using combustion turbines and coal gas from the Texaco oxygen blown gasifier are presented. The steam plant utilizes combustion turbine exhaust gas as its combustion air supply. In some examples coal gas is fired in both the combustion turbines and the main boiler, while, in other cases, oil firing is retained in the boiler. Plant configurations, equipment changes, and performance are determined for three basic forms: (1) repowering based on coal gas supplied by pipeline (remote source); (2) repowering based on complete integration of the gasification system with the power plant; and (3) repowering based on partial integration of the gasification system wherein the boiler retains oil firing.

Garland, R.V.

1981-07-01T23:59:59.000Z

192

Materials exposure test facilities for varying low-Btu coal-derived gas  

SciTech Connect

As a part of the United States Department of Energy's High Temperature Turbine Technology Readiness Program, the Morgantown Energy Technology Center is participating in the Ceramics Corrosion/Erosion Materials Study. The objective is to create a technology base for ceramic materials which could be used by stationary gas power turbines operating in a high-temperature, coal-derived, low-Btu gas products of combustion environment. Two METC facilities have been designed, fabricated and will be operated simultaneously exposing ceramic materials dynamically and statically to products of combustion of a coal-derived gas. The current studies will identify the degradation of ceramics due to their exposure to a coal-derived gas combustion environment.

Nakaishi, C.V.; Carpenter, L.K.

1980-01-01T23:59:59.000Z

193

Renewable energy options in Saudi Arabia: the economic viability of solar photovoltaics within the residential sector  

Science Conference Proceedings (OSTI)

Renewable energy options, including solar power, are becoming progressively more viable and thus increasingly pose challenges to conventional sources of energy, such as oil, coal and natural gas. Solar Photovoltaic technology is one type of solar energy ... Keywords: Saudi Arabia, feasibility study, renewable energy, residential buildings, solar photovoltaics

Yasser Al-Saleh; Hanan Taleb

2009-02-01T23:59:59.000Z

194

Tersus Asian Renewables | Open Energy Information  

Open Energy Info (EERE)

Product Tersus Asian Renewables is focusing on investments in wind, biomass and clean coal, principally in China and India. References Tersus Asian Renewables1 LinkedIn...

195

Heavy duty gas turbine combustion tests with simulated low BTU coal gas  

DOE Green Energy (OSTI)

This program has the objectives to: A. Parametrically determine the effects of moisture, nitrogen and carbon dioxide as diluents so that the combustion characteristics of many varieties of gasification product gases can be reasonably predicted without physically testing each specific gas composition. B. Determine emissions characteristics including NO, NO{sub x}, CO, levels etc. associated with each of the diluents, and C. Operate with at least two syngas compositions; DOE chosen air-blown and integrated oxygen-blown, to confirm that the combustion characteristics are in line with predictions. As a result of this program: 1. GE Engineering is now confident that the syngas fuels produced by all currently--viable coal gasifiers can be accommodated by the GE advanced (``F`` Technology) combustion system, and 2. For proposed syngas fuels with varying amounts of steam, nitrogen or CO{sub 2} diluent, the combustion and emissions characteristics can be reasonably estimated without undertaking expensive new screening tests for each different fuel.

Ekstrom, T.E.; Battista, R.A.; Belisle, F.H.; Maxwell, G.P.

1993-11-01T23:59:59.000Z

196

Coal....  

U.S. Energy Information Administration (EIA)

DOE EIA WEEKLY COAL ... Coal Prices and Earnings (updated July 7, 2004) In the trading week ended July 2, the average spot coal prices tracked by EIA were mixed.

197

Estimating Gas Concentration of Coal Mines Based on ISGNN  

Science Conference Proceedings (OSTI)

Online detecting failure of gas sensors in mine wells is an important problem. A key step for solution of the problem is estimating sample values of detected gas sensor, according to sample values of other gas sensors. We propose a scheme based on ISGNN ... Keywords: Estimating gas concentration, Gas concentration modeling, Generating Neural Networks, ISGNN

Aiguo Li; Lina Song

2009-11-01T23:59:59.000Z

198

Renewable Fuels Module  

Annual Energy Outlook 2012 (EIA)

The RFM has seven submodules representing various renewable energy sources, biomass, geothermal, conventional hydroelectricity, landfill gas, solar thermal, solar photovoltaics,...

199

Renewable Fuels Module This  

Gasoline and Diesel Fuel Update (EIA)

The RFM has seven submodules representing various renewable energy sources: biomass, geothermal, conventional hydroelectricity, landfill gas, solar thermal, solar photovoltaics,...

200

Advanced coal fueled industrial cogeneration gas turbine system. Final report, June 1986--April 1994  

SciTech Connect

Demonstration of a direct coal-fueled gas turbine system that is environmentally, technically, and economically viable depends on the satisfactory resolution of several key issues. Solar Turbines, Incorporates technical approach to these issues was to advance a complete direct coal-fueled gas turbine system that incorporated near-term technology solutions to both historically demonstrated problem areas such as deposition, erosion, and hot end corrosion, and to the emergent environmental constraints based on NO{sub x}, SO{sub x}, and particulates. Solar`s program approach was keyed to the full commercialization of the coal-fueled cogeneration gas turbine which would occur after extended field verification demonstrations conducted by the private sector. The program was structured in three phases plus an optional fourth phase: Phase 1 -- system description; Phase 2 -- component development; Phase 3 -- prototype system verification; and Phase 4 -- field evaluation.

LeCren, R.T.

1994-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "gas coal renewables" 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

Results Summary Investigating the Use of Liquid CO2 Coal Slurry for Feeding Low Rank Coal to the E-Gas™ Gasifier  

Science Conference Proceedings (OSTI)

This report summarizes the results of US Department of Energy (DOE) Award No. DE-FE0007977, Liquid CO2/Coal Slurry for Feeding Low Rank Coal to Gasifiers, which investigates the practicality of using a liquid CO2/coal slurry preparation and feed system for the E-Gas gasifier in an integrated-gasification–combined-cycle (IGCC) electric power generation plant configuration.Liquid CO2 (LCO2) has several property differences from water that ...

2013-12-11T23:59:59.000Z

202

Novel carbons from Illinois coal for natural gas storage. Technical report, March 1--May 31, 1995  

DOE Green Energy (OSTI)

Goal is to develop a technology for producing microengineered adsorbent carbons from Illinois coal and to evaluate their potential application for storing natural gas for use in emerging low pressure, natural gas vehicles (NGVs). Focus is to design and engineer adsorbents that meet or exceed performance and cost targets established for low-pressure natural gas storage materials. Potentially, about two million tons adsorbent could be consumed in NGVs by year 2000. If successful, the results could lead to use of Illinois coal in a market that could exceed 6 million tons per year. Activated carbon samples were prepared from IBC-106 coal by controlling both the preoxidation temperature and time, and the devolatilization temperature in order to eliminate coal caking. A 4.6 cc pressurized vessel was constructed to measure the Vm/Vs methane adsorption capacity (volume of stored methane at STP per volume storage container). Several IBC-106 derived activated carbons showed methane adsorption capacities comparable to that of a 1000 m{sup 2}/g commercial activated carbon. Results indicated that surface area and micropore volume of activated carbons are important for natural gas storage. Work is in progress to synthesize samples from IBC-106 coal with optimum pore diameter for methane adsorption.

Rostam-Abadi, M.; Sun, Jian; Lizzio, A.A.

1995-12-31T23:59:59.000Z

203

Solar coal-gasification reactor with pyrolysis-gas recycle. [Patent application  

DOE Patents (OSTI)

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

Aiman, W.R.; Gregg, D.W.

1981-04-06T23:59:59.000Z

204

Hydrogen Resource Assessment: Hydrogen Potential from Coal, Natural Gas, Nuclear, and Hydro Power  

DOE Green Energy (OSTI)

This paper estimates the quantity of hydrogen that could be produced from coal, natural gas, nuclear, and hydro power by county in the United States. The study estimates that more than 72 million tonnes of hydrogen can be produced from coal, natural gas, nuclear, and hydro power per year in the country (considering only 30% of their total annual production). The United States consumed about 396 million tonnes of gasoline in 2007; therefore, the report suggests the amount of hydrogen from these sources could displace about 80% of this consumption.

Milbrandt, A.; Mann, M.

2009-02-01T23:59:59.000Z

205

Improved anode catalysts for coal gas-fueled phosphoric acid fuel cells  

Science Conference Proceedings (OSTI)

The feasibility of adapting phosphoric acid fuel cells to operate on coal gas fuels containing significant levels of contaminants such as CO, H{sub 2}S and COS has been investigated. The overall goal was the development of low-cost, carbon-supported anode fuel cell catalysts that can efficiently operate with a fossil fuel-derived hydrogen gas feed contaminated with carbon monoxide and other impurities. This development would reduce the cost of gas cleanup necessary in a coal gas-fueled PAFC power plant, thereby reducing the final power cost of the electricity produced. The problem to date has been that the contaminant gases typically adsorb on catalytic sites and reduce the activity for hydrogen oxidation. An advanced approach investigated was to modify these alloy catalyst systems to operate efficiently on coal gas containing higher levels of contaminants by increasing the alloy catalyst impurity tolerance and ability to extract energy from the CO present through (1) generation of additional hydrogen by promoting the CO/H{sub 2} water shift reaction or (2) direct oxidation of CO to CO{sub 2} with the same result. For operation on anode gases containing high levels of CO, a Pt-Ti-Zn and Pt-Ti-Ni anode catalyst showed better performance over a Pt baseline or G87A-17-2 catalyst. The ultimate aim of this effort was to allow PAFC-based power plants to operate on coal gas fuels containing increased contaminant concentrations, thereby decreasing the need for and cost of rigorous coal gas cleanup procedures. 4 refs., 15 figs., 10 tabs.

Kackley, N.D.; McCatty, S.A.; Kosek, J.A.

1990-07-01T23:59:59.000Z

206

Development of a coal-fired gas turbine cogeneration system: Status report  

SciTech Connect

The Allison Advanced Coal-Fueled Turbine Program is now in the sixth year of a development effort that has led to a POC engine demonstration test on a Coal-Water-Slurry (CWS) fuel. Earlier forecasts by CWS suppliers that suitable CWS fuels would be commercially available at an economic price have not been realized. A program replan has, therefore, been executed that incorporates the use of readily available dry pulverized coal. To support this program, technology issues relating to combustor performance and emission control, hot gas cleanup, and turbine deposition, erosion and corrosion (DEC) have been addressed. In addition, system assessment studies have been performed to evaluate the commercial prospects for small (<8 MWe) coal-fired industrial cogeneration systems and the application of the rich-quench-lean (RQL) coal-combustion technology to larger (> 100 MWe) utility-sized gas turbines. These results are reported by Wenglarz (1992). Combustor and engine tests on dry coal are now planned in preparation for a commercial demonstration that will follow the completion of this program.

Wilkes, C.; Wenglarz, R.A.; Hart, P.J.; Thomas, W.H.; Rothrock, J.W.; Harris, C.N.; Bourke, R.C.

1992-01-01T23:59:59.000Z

207

Easing the natural gas crisis: Reducing natural gas prices through increased deployment of renewable energy and energy efficiency  

E-Print Network (OSTI)

Risk: Using Forward Natural Gas Prices Instead of Gas PriceGas Crisis: Reducing Natural Gas Prices through IncreasedSummary Heightened natural gas prices have emerged as a key

Wiser, Ryan; Bolinger, Mark; St. Clair, Matt

2004-01-01T23:59:59.000Z

208

Can Deployment of Renewable Energy and Energy Efficiency Put Downward Pressure on Natural Gas Prices  

E-Print Network (OSTI)

a reduction in U.S. natural gas consumption, ranging fromhigh gas demand on U.S. natural gas consumption and price inU.S. wellhead price of natural gas and total gas consumption

Wiser, Ryan; Bolinger, Mark

2005-01-01T23:59:59.000Z

209

Can Deployment of Renewable Energy and Energy Efficiency Put Downward Pressure on Natural Gas Prices  

E-Print Network (OSTI)

Gas Crisis: Reducing Natural Gas Prices through IncreasedEconomy (ACEEE). 2003. Natural Gas Price Effects of EnergyRisk: Using Forward Natural Gas Prices Instead of Gas Price

Wiser, Ryan; Bolinger, Mark

2005-01-01T23:59:59.000Z

210

Determination of the Effect of Coal/Biomass-Derived Syngas Contaminants on the Performance of Fischer-Tropsch and Water-Gas-Shift Catalysts  

SciTech Connect

Today, nearly all liquid fuels and commodity chemicals are produced from non-renewable resources such as crude oil and natural gas. Because of increasing scrutiny of carbon dioxide (CO{sub 2}) emissions produced using traditional fossil-fuel resources, the utilization of alternative feedstocks for the production of power, hydrogen, value-added chemicals, and high-quality hydrocarbon fuels such as diesel and substitute natural gas (SNG) is critical to meeting the rapidly growing energy needs of modern society. Coal and biomass are particularly attractive as alternative feedstocks because of the abundant reserves of these resources worldwide. The strategy of co-gasification of coal/biomass (CB) mixtures to produce syngas for synthesis of Fischer-Tropsch (FT) fuels offers distinct advantages over gasification of either coal or biomass alone. Co-feeding coal with biomass offers the opportunity to exploit economies of scale that are difficult to achieve in biomass gasification, while the addition of biomass to the coal gasifier feed leverages proven coal gasification technology and allows CO{sub 2} credit benefits. Syngas generated from CB mixtures will have a unique contaminant composition because coal and biomass possess different concentrations and types of contaminants, and the final syngas composition is also strongly influenced by the gasification technology used. Syngas cleanup for gasification of CB mixtures will need to address this unique contaminant composition to support downstream processing and equipment. To investigate the impact of CB gasification on the production of transportation fuels by FT synthesis, RTI International conducted thermodynamic studies to identify trace contaminants that will react with water-gas-shift and FT catalysts and built several automated microreactor systems to investigate the effect of single components and the synergistic effects of multiple contaminants on water-gas-shift and FT catalyst performance. The contaminants investigated were sodium chloride (NaCl), potassium chloride (KCl), hydrogen sulfide (H{sub 2}S), carbonyl sulfide (COS), ammonia (NH{sub 3}), and combinations thereof. This report details the thermodynamic studies and the individual and multi-contaminant results from this testing program.

Trembly, Jason; Cooper, Matthew; Farmer, Justin; Turk, Brian; Gupta, Raghubir

2010-12-31T23:59:59.000Z

211

Coal gasification via the Lurgi process: Topical report: Volume 1, Production of SNG (substitute material gas)  

Science Conference Proceedings (OSTI)

A Lurgi baseline study was requested by the DOE/GRI Operating Committee of the Joint Coal Gasification Program for the purpose of updating the economics of earlier Lurgi coal gasification plant studies for the production of substitute natural gas (SNG) based on commercially advanced technologies. The current study incorporates the recent experience with large size Lurgi plants in an effort to improve capital and operating costs of earlier plant designs. The present coal gasification study is based on a mine mouth plant producing 250 billion Btu (HHV) per day of SNG using the Lurgi dry bottom coal gasification technology. A Western subbituminous coal was designated as the plant food, obtained from the Rosebud seam at Colstrip, Montana. This study presents the detailed description of an integrated facility which utilizes coal, air, and water to produce 250 billion Btu (HHV) per day of SNG. The plant consists of coal handling and preparation, twenty-six Lurgi dry bottom gasifiers, shift conversion, acid gas removal, methanation, compression and drying of product gas, sulfur recovery, phenol and ammonia recovery, as well as necessary support facilities. The plant is a grass roots, mine mouth facility located in a Western location similar to the town of Colstrip in Rosebud County, Montana. The Lurgi Corporation assisted in this study, under subcontract to Foster Wheeler, by supplying the heat and material balances, flow sheets, utilities, catalysts and chemical requirements, and cost data for Lurgi designed process sections. Details of material supplied by Lurgi Corporation are presented in Appendix A. 52 refs., 36 figs., 64 tabs.

Zahnstecher, L.W.

1984-09-01T23:59:59.000Z

212

Apples with apples: accounting for fuel price risk in comparisons of gas-fired and renewable generation  

DOE Green Energy (OSTI)

For better or worse, natural gas has become the fuel of choice for new power plants being built across the United States. According to the US Energy Information Administration (EIA), natural gas combined-cycle and combustion turbine power plants accounted for 96% of the total generating capacity added in the US between 1999 and 2002--138 GW out of a total of 144 GW. Looking ahead, the EIA expects that gas-fired technology will account for 61% of the 355 GW new generating capacity projected to come on-line in the US up to 2025, increasing the nationwide market share of gas-fired generation from 18% in 2002 to 22% in 2025. While the data are specific to the US, natural gas-fired generation is making similar advances in other countries as well. Regardless of the explanation for (or interpretation of) the empirical findings, however, the basic implications remain the same: one should not blindly rely on gas price forecasts when comparing fixed-price renewable with variable-price gas-fired generation contracts. If there is a cost to hedging, gas price forecasts do not capture and account for it. Alternatively, if the forecasts are at risk of being biased or out of tune with the market, then one certainly would not want to use them as the basis for resource comparisons or investment decisions if a more certain source of data (forwards) existed. Accordingly, assuming that long-term price stability is valued, the most appropriate way to compare the levelized cost of these resources in both cases would be to use forward natural gas price data--i.e. prices that can be locked in to create price certainty--as opposed to uncertain natural gas price forecasts. This article suggests that had utilities and analysts in the US done so over the sample period from November 2000 to November 2003, they would have found gas-fired generation to be at least 0.3-0.6 cents/kWh more expensive (on a levelized cost basis) than otherwise thought. With some renewable resources, in particular wind power, now largely competitive with gas-fired generation in the US (including the impact of the federal production tax credit and current high gas prices), a margin of 0.3-0.6 cents/kWh may in some cases be enough to sway resource decisions in favor of renewables.

Bolinger, Mark; Wiser, Ryan

2003-12-18T23:59:59.000Z

213

Enabling Technology for Monitoring & Predicting Gas Turbine Health & Performance in COAL IGCC Powerplants  

SciTech Connect

The ''Enabling & Information Technology To Increase RAM for Advanced Powerplants'' program, by DOE request, has been re-directed, de-scoped to two tasks, shortened to a 2-year period of performance, and refocused to develop, validate and accelerate the commercial use of enabling materials technologies and sensors for Coal IGCC powerplants. The new program has been re-titled as ''Enabling Technology for Monitoring & Predicting Gas Turbine Health & Performance in IGCC Powerplants'' to better match the new scope. This technical progress report summarizes the work accomplished in the reporting period April 1, 2004 to August 31, 2004 on the revised Re-Directed and De-Scoped program activity. The program Tasks are: Task 1--IGCC Environmental Impact on high Temperature Materials: This first materials task has been refocused to address Coal IGCC environmental impacts on high temperature materials use in gas turbines and remains in the program. This task will screen material performance and quantify the effects of high temperature erosion and corrosion of hot gas path materials in Coal IGCC applications. The materials of interest will include those in current service as well as advanced, high-performance alloys and coatings. Task 2--Material In-Service Health Monitoring: This second task develops and demonstrates new sensor technologies to determine the in-service health of advanced technology Coal IGCC powerplants, and remains in the program with a reduced scope. Its focus is now on only two critical sensor need areas for advanced Coal IGCC gas turbines: (1) Fuel Quality Sensor for detection of fuel impurities that could lead to rapid component degradation, and a Fuel Heating Value Sensor to rapidly determine the fuel heating value for more precise control of the gas turbine, and (2) Infra-Red Pyrometer to continuously measure the temperature of gas turbine buckets, nozzles, and combustor hardware.

Kenneth A. Yackly

2004-09-30T23:59:59.000Z

214

Sorbent Injection for Small ESP Mercury Control in Low Sulfur Eastern Bituminous Coal Flue Gas  

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

Sorbent InjectIon for Small eSP Sorbent InjectIon for Small eSP mercury control In low Sulfur eaStern bItumInouS coal flue GaS Background Full-scale field testing has demonstrated the effectiveness of activated carbon injection (ACI) as a mercury-specific control technology for certain coal-fired power plants, depending on the plant's coal feedstock and existing air pollution control device configuration. In a typical configuration, powdered activated carbon (PAC) is injected downstream of the plant's air heater and upstream of the existing particulate control device - either an electrostatic precipitator (ESP) or a fabric filter (FF). The PAC adsorbs the mercury from the combustion flue gas and is subsequently captured along with the fly ash in the ESP or FF. ACI can have some negative side

215

Multi-objective fuel policies: Renewable fuel standards versus Fuel greenhouse gas intensity standards  

E-Print Network (OSTI)

under Low Carbon Fuel Standards? American Economic Journal:the Low Carbon Fuel Standard, Volume I Sta? Report: Initialpolicies: Renewable fuel standards versus Fuel greenhouse

Rajagopal, Deepak

2010-01-01T23:59:59.000Z

216

Characterization and control of exhaust gas from diesel engine firing coal-water mixture  

DOE Green Energy (OSTI)

Exhaust from the GE-TS single cylinder diesel engine, fitted with hardened metal, and diamond-tipped metal fuel injection nozzles, and firing coal-water mixture (CWM) has been characterized with respect to gas composition, particulate size distribution, and particulate filtration characteristics. The measured flue gas compositions are roughly in keeping with results from combustion calculations. The time variations of the hydrocarbon, CO, and NO[sub x] concentrations are also understood in terms of known reaction mechanisms.

Samuel, E.A.; Gal, E.; Mengel, M.; Arnold, M.

1990-03-01T23:59:59.000Z

217

Characterization and control of exhaust gas from diesel engine firing coal-water mixture  

DOE Green Energy (OSTI)

Exhaust from the GE-TS single cylinder diesel engine, fitted with hardened metal, and diamond-tipped metal fuel injection nozzles, and firing coal-water mixture (CWM) has been characterized with respect to gas composition, particulate size distribution, and particulate filtration characteristics. The measured flue gas compositions are roughly in keeping with results from combustion calculations. The time variations of the hydrocarbon, CO, and NO{sub x} concentrations are also understood in terms of known reaction mechanisms.

Samuel, E.A.; Gal, E.; Mengel, M.; Arnold, M.

1990-03-01T23:59:59.000Z

218

The Settlement on Coal Pillar Width of District Sublevel in High Gas Mine of Tongchuan  

Science Conference Proceedings (OSTI)

Abstract: Based on the actual geology situation of district in Tongchuan some mine, the influence on the stability of surrounding rock of roadway?the stress distribution rule on coal pillar and the distribution rule of plastic area was studied ... Keywords: High gas, district, district sublevel, plastic area

Xiao-Xiang Chen; Pan-Feng Gou; Si-Jiang Wei

2009-05-01T23:59:59.000Z

219

Advanced coal-fueled industrial cogeneration gas turbine system  

DOE Green Energy (OSTI)

This report covers the activity during the period from 2 June 1991 to 1 June 1992. The major areas of work include: the combustor sub-scale and full size testing, cleanup, coal fuel specification and processing, the Hot End Simulation rig and design of the engine parts required for use with the coal-fueled combustor island. To date Solar has demonstrated: Stable and efficient combustion burning coal-water mixtures using the Two Stage Slagging Combustor; Molten slag removal of over 97% using the slagging primary and the particulate removal impact separator; and on-site preparation of CWM is feasible. During the past year the following tasks were completed: The feasibility of on-site CWM preparation was demonstrated on the subscale TSSC. A water-cooled impactor was evaluated on the subscale TSSC; three tests were completed on the full size TSSC, the last one incorporating the PRIS; a total of 27 hours of operation on CWM at design temperature were accumulated using candle filters supplied by Refraction through Industrial Pump Filter; a target fuel specification was established and a fuel cost model developed which can identify sensitivities of specification parameters; analyses of the effects of slag on refractory materials were conducted; and modifications continued on the Hot End Simulation Rig to allow extended test times.

LeCren, R.T.; Cowell, L.H.; Galica, M.A.; Stephenson, M.D.; When, C.S.

1992-06-01T23:59:59.000Z

220

Program on Technology Innovation: Wavelength-Multiplexed Diode Laser Absorption Sensors for Rapid Monitoring of Coal-Derived Synthesis Gas  

Science Conference Proceedings (OSTI)

Sensors are needed to monitor gas temperature and synthesis products during coal gasificationin the reactor, at the reactor exit, and along the path to potential use by gas turbines. The harsh operating conditions of coal gasification create a challenging measurement environment. In particular, an optimized gasifier is operated at pressures of 20–40 atm (2027–4053 kPa) with the expectation for operation at even higher pressures. The synthesis gas is also heavily laden with particulate, and the gasifier r...

2012-02-27T23:59:59.000Z

Note: This page contains sample records for the topic "gas coal renewables" 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

Can Deployment of Renewable Energy and Energy Efficiency Put Downward Pressure on Natural Gas Prices  

E-Print Network (OSTI)

Supply Models of Natural Gas. ” The Bell Journal ofCalifornia’s Reliance on Natural Gas. Santa Monica, Calif. :Forum (EMF). 2003. Natural Gas, Fuel Diversity and North

Wiser, Ryan; Bolinger, Mark

2005-01-01T23:59:59.000Z

222

Can Deployment of Renewable Energy and Energy Efficiency Put Downward Pressure on Natural Gas Prices  

E-Print Network (OSTI)

price elasticity of natural gas supply implied by theour key findings. NATURAL GAS SUPPLY AND DEMAND: A CURSORYprice elasticity of natural gas supply, and discuss the

Wiser, Ryan; Bolinger, Mark

2005-01-01T23:59:59.000Z

223

The potential impact of renewable energy deployment on natural gas prices in New England  

E-Print Network (OSTI)

economics literature on natural gas supply elasticities. Wescenarios. Given that natural gas supply is generallyhas little native natural gas supply, and is therefore

Wiser, Ryan; Bolinger, Mark

2004-01-01T23:59:59.000Z

224

Putting downward pressure on natural gas prices: The impact of renewable energy and energy efficiency  

E-Print Network (OSTI)

in delivered natural gas prices. References American CouncilACEEE). 2003. Natural Gas Price Effects of Energy Efficiencydownward pressure on gas prices. 2 Many recent modeling

Wiser, Ryan; Bolinger, Mark; St. Clair, Matthew

2004-01-01T23:59:59.000Z

225

Putting downward pressure on natural gas prices: The impact of renewable energy and energy efficiency  

E-Print Network (OSTI)

is expected to reduce natural gas demand and in turn placereduction in national natural gas demand appears likely tothat a reduction in natural gas demand, whether caused by

Wiser, Ryan; Bolinger, Mark; St. Clair, Matthew

2004-01-01T23:59:59.000Z

226

The potential impact of renewable energy deployment on natural gas prices in New England  

E-Print Network (OSTI)

Energy Deployment on Natural Gas Prices in New England Datecan directly hedge natural gas price risk by reducing thedownward pressure on natural gas prices by reducing demand

Wiser, Ryan; Bolinger, Mark

2004-01-01T23:59:59.000Z

227

Putting downward pressure on natural gas prices: The impact of renewable energy and energy efficiency  

E-Print Network (OSTI)

in delivered natural gas prices. References American CouncilEconomy (ACEEE). 2003. Natural Gas Price Effects of EnergyDownward Pressure on Natural Gas Prices: The Impact of

Wiser, Ryan; Bolinger, Mark; St. Clair, Matthew

2004-01-01T23:59:59.000Z

228

Accounting for fuel price risk when comparing renewable to gas-fired generation: the role of forward natural gas prices  

E-Print Network (OSTI)

Risk: Using Forward Natural Gas Prices Instead of Gas Price2001). “Which way the natural gas price: an attempt toThe Role of Forward Natural Gas Prices Mark Bolinger, Ryan

Bolinger, Mark; Wiser, Ryan; Golove, William

2004-01-01T23:59:59.000Z

229

System and method for producing substitute natural gas from coal  

DOE Patents (OSTI)

The present invention provides a system and method for producing substitute natural gas and electricity, while mitigating production of any greenhouse gasses. The system includes a hydrogasification reactor, to form a gas stream including natural gas and a char stream, and an oxygen burner to combust the char material to form carbon oxides. The system also includes an algae farm to convert the carbon oxides to hydrocarbon material and oxygen.

Hobbs, Raymond (Avondale, AZ)

2012-08-07T23:59:59.000Z

230

Electricity generation from coal and natural gas both ...  

U.S. Energy Information Administration (EIA)

Energy use in homes, commercial buildings, ... the share of natural gas-fired power generation is most influenced by the availability of hydroelectric power, ...

231

Kinetics of Direct Oxidation of H2S in Coal Gas to Elemental Sulfur  

SciTech Connect

Removal of hydrogen sulfide (H{sub 2}S) from coal gasifier gas and sulfur recovery are key steps in the development of Department of Energy's (DOE's) advanced Vision 21 plants that produce electric power and clean transportation fuels with coal and natural gas. These Vision 21 plants will require highly clean coal gas with H{sub 2}S below 1 ppm and negligible amounts of trace contaminants such as hydrogen chloride, ammonia, alkali, heavy metals, and particulate. The conventional method of sulfur removal and recovery employing amine, Claus, and tail-gas treatment is very expensive. A second generation approach developed under DOE's sponsorship employs hot-gas desulfurization (HGD) using regenerable metal oxide sorbents followed by Direct Sulfur Recovery Process (DSRP). However, this process sequence does not remove trace contaminants and is targeted primarily towards the development of advanced integrated gasification combined cycle (IGCC) plants that produce electricity (not both electricity and transportation fuels). There is an immediate as well as long-term need for the development of cleanup processes that produce highly clean coal gas for next generation Vision 21 plants. To this end, a novel process is now under development at several research organizations in which the H{sub 2}S in coal gas is directly oxidized to elemental sulfur over a selective catalyst. Such a process is ideally suited for coal gas from commercial gasifiers with a quench system to remove essentially all the trace contaminants except H{sub 2}S. The direct oxidation of H{sub 2}S to elemental sulfur in the presence of SO{sub 2} is ideally suited for coal gas from commercial gasifiers with a quench system to remove essentially all the trace contaminants except H{sub 2}S. This direct oxidation process has the potential to produce a super clean coal gas more economically than both conventional amine-based processes and HGD/DSRP. The objectives of this research are to measure kinetics of direct oxidation of H{sub 2}S to elemental sulfur in the presence of a simulated coal gas mixture containing SO{sub 2}, H{sub 2}, and moisture, using 160-{micro}m C-500-04 alumina catalyst particles and 400 square cells/inch{sup 2}, {gamma}-Al{sub 2}O{sub 3}-wash-coated monolithic catalyst, and various reactors such as a micro packed-bed reactor, a micro bubble reactor, and a monolithic catalyst reactor, and to develop kinetic rate equations and model the direct oxidation process to assist in the design of large-scale plants. This heterogeneous catalytic reaction has gaseous reactants such as H{sub 2}S and SO{sub 2}. However, this heterogeneous catalytic reaction has heterogeneous products such as liquid elemental sulfur and steam.

K.C. Kwon

2005-11-01T23:59:59.000Z

232

Can Deployment of Renewable Energy and Energy Efficiency Put Downward Pressure on Natural Gas Prices  

E-Print Network (OSTI)

2003a. Balancing Natural Gas Policy – Fueling the Demands of2003b. Balancing Natural Gas Policy – Fueling the Demands ofimports of natural gas, then policies to reduce gas demand

Wiser, Ryan; Bolinger, Mark

2005-01-01T23:59:59.000Z

233

Process of producing combustible gas and for carbonizing coal  

SciTech Connect

This patent describes a process of producing combustible gas by supporting a column of fuel in a shaft furnace, intermittently blasting a combustion-supporting gas transversely through a mid portion of said column to produce a mid zone of sufficiently high temperature to decompose steam. The steam then circulated upwardly through said column between said blasting operations.

Doherty, H.L.

1922-08-15T23:59:59.000Z

234

Comparison of coal-based systems: marketability of medium-Btu gas and SNG (substitute natural gas) for industrial applications. Final report, July 1979-March 1982  

Science Conference Proceedings (OSTI)

In assessing the marketability of synthetic fuel gases from coal, this report emphasizes the determination of the relative attractiveness of substitute natural gas (SNG) and medium-Btu gas (MBG) for serving market needs in eight industrial market areas. The crucial issue in predicting the marketability of coal-based synthetic gas is the future price level of competing conventional alternatives, particularly oil. Under a low oil-price scenario, the market outlook for synthetic gases is not promising, but higher oil prices would encourage coal gasification.

Olsen, D.L.; Trexel, C.A.; Teater, N.R.

1982-05-01T23:59:59.000Z

235

Can Deployment of Renewable Energy and Energy Efficiency Put Downward Pressure on Natural Gas Prices  

E-Print Network (OSTI)

or on increasing imports of natural gas, then policies tomore reliant on imports of natural gas [especially liquefied

Wiser, Ryan; Bolinger, Mark

2005-01-01T23:59:59.000Z

236

Parameterization of the Cool Skin of the Ocean and of the Air-Ocean Gas Transfer on the Basis of Modeling Surface Renewal  

Science Conference Proceedings (OSTI)

Heat and gas transport in molecular sublayers at the air-sea interface is governed by similar laws. A model of renewal type based on the physics of molecular sublayers allows the derivation of a parameterization of the temperature difference ...

Alexander V. Soloviev; Peter Schlüssel

1994-06-01T23:59:59.000Z

237

Analysis of CO2 Separation from Flue Gas, Pipeline Transportation, and Sequestration in Coal  

Science Conference Proceedings (OSTI)

This report was written to satisfy a milestone of the Enhanced Coal Bed Methane Recovery and CO2 Sequestration task of the Big Sky Carbon Sequestration project. The report begins to assess the costs associated with separating the CO2 from flue gas and then injecting it into an unminable coal seam. The technical challenges and costs associated with CO2 separation from flue gas and transportation of the separated CO2 from the point source to an appropriate sequestration target was analyzed. The report includes the selection of a specific coal-fired power plant for the application of CO2 separation technology. An appropriate CO2 separation technology was identified from existing commercial technologies. The report also includes a process design for the chosen technology tailored to the selected power plant that used to obtain accurate costs of separating the CO2 from the flue gas. In addition, an analysis of the costs for compression and transportation of the CO2 from the point-source to an appropriate coal bed sequestration site was included in the report.

Eric P. Robertson

2007-09-01T23:59:59.000Z

238

Quantifying the value that energy efficiency and renewable energy provide as a hedge against volatile natural gas prices  

E-Print Network (OSTI)

Energy Efficiency and Renewable Energy Provide as a Hedgeenergy efficiency and renewable energy have long argued thatenergy efficiency and renewable energy can provide price

Bolinger, Mark; Wiser, Ryan; Bachrach, Devra; Golove, William

2002-01-01T23:59:59.000Z

239

Flue Gas Conditioning to Reduce Particulate Emissions in Industrial Coal-Fired Boilers  

E-Print Network (OSTI)

Chemical technology has been used successfully to solve many of the operational and emissions problems that result from burning coal. This paper describes the use of blended chemical flue gas conditioners to significantly reduce particulate emissions in coal-fired industrial boilers. In many cases, these chemical conditioning agents have increased the efficiency of electrostatic precipitators and mechanical collectors by more than fifty percent. The effectiveness of this technology has been demonstrated on units generating 50,000 to 200,000 lbs./hr. steam. Results achieved at various industrial plants under actual operating conditions are presented.

Miller, B.; Keon, E.

1980-01-01T23:59:59.000Z

240

Proceedings of the eighth annual coal-fueled heat engines and gas stream cleanup systems contractors review meeting  

SciTech Connect

The goal of the Heat Engines and Gas Stream Cleanup Programs at Morgantown Energy Technology Center is to develop essential technologies so the private sector can commercialize power plants burning coal-derived fuels. The purpose of this annual meeting is to provide a forum for scientists and engineers to present their results, exchange ideas and talk about their plans. Topics discussed were: Heat Engines Commercialization and Proof of Concepts Projects; Components and Testing of Coal-Fueled Gas Turbines; Advances in Barrier Filters; Pulse Combustion/Agglomeration; Advances in Coal-Fueled Diesels; Gas Stream Cleanup; Turbine and Diesel Emissions; and Poster Presentations.

Webb, H.A.; Bedick, R.C.; Geiling, D.W.; Cicero, D.C. (eds.)

1991-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "gas coal renewables" 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.


241

NETL: Clean Coal Demonstrations - Coal 101  

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

Cleanest Coal Technology Clean Coal 101 Lesson 5: The Cleanest Coal Technology-A Real Gas Don't think of coal as a solid black rock. Think of it as a mass of atoms. Most of the...

242

Impact of the renewable oxygenate standard for reformulated gasoline on ethanol demand, energy use, and greenhouse gas emissions  

DOE Green Energy (OSTI)

To assure a place for renewable oxygenates in the national reformulated gasoline (RFG) program, the US Environmental Protection Agency has promulgated the renewable oxygenate standard (ROS) for RFG. It is assumed that ethanol derived from corn will be the only broadly available renewable oxygenate during Phase I of the RFG program. This report analyzes the impact that the ROS could have on the supply of ethanol, its transported volume, and its displacement from existing markets. It also considers the energy and crude oil consumption and greenhouse gas (GHG) emissions that could result from the production and use of various RFGs that could meet the ROS requirements. The report concludes that on the basis of current and projected near-term ethanol capacity, if ethanol is the only available renewable oxygenate used to meet the requirements of the ROS, diversion of ethanol from existing use as a fuel is likely to be necessary. Year-round use of ethanol and ETBE would eliminate the need for diversion by reducing winter demand for ethanol. On an RFG-program-wide basis, using ethanol and ETBE to satisfy the ROS can be expected to slightly reduce fossil energy use, increase crude oil use, and have essentially no effect on GHG emissions or total energy use relative to using RFG oxygenated only with MTBE.

Stork, K.C.; Singh, M.K.

1995-04-01T23:59:59.000Z

243

Future power market shares of coal, natural gas generators depend ...  

U.S. Energy Information Administration (EIA)

Natural gas combined-cycle capacity represented only 7% of total capacity in the region in 2011, but is projected to rise to 11% in 2040 in the Reference Case.

244

"1. Intermountain Power Project","Coal","Los Angeles City of",1800  

U.S. Energy Information Administration (EIA) Indexed Site

Utah" Utah" "1. Intermountain Power Project","Coal","Los Angeles City of",1800 "2. Hunter","Coal","PacifiCorp",1336 "3. Huntington","Coal","PacifiCorp",911 "4. Lake Side Power Plant","Gas","PacifiCorp",557 "5. Currant Creek","Gas","PacifiCorp",540 "6. Bonanza","Coal","Deseret Generation & Tran Coop",458 "7. Gadsby","Gas","PacifiCorp",348 "8. KUCC","Coal","Kennecott Utah Copper Corporation",213 "9. Milford Wind Corridor I LLC","Other Renewables","Milford Wind Corridor Phase I LLC",204

245

Status of METC investigations of coal gas desulfurization at high temperature. [Zinc ferrite  

DOE Green Energy (OSTI)

This report documents the continuing effort at the US Department of Energy/Morgantown Energy Technology Center (METC) to develop a hot-gas desulfurization process for coal-derived gas, primarily for application to molten carbonate fuel cells. Metal oxide sorbents were tested on lab-scale test equipment, and it was determined that scale-up of the process was warranted. A larger, skid-mounted test unit was therefore designed, constructed, and installed on a sidestream of the DOE/METC fixed-bed gasifier. A first series of tests was conducted during Gasifier Run 101. These tests served to shake down the test unit, and provide data on the performance of the test unit operating on coal-derived gas. Overall, the process operated well on fixed-bed, air-blown gasifier gas. Sulfur levels in exit dry gas were reduced to less than 10 ppM. Regeneration appears to restore the sulfur-removing capacity of the sorbent. Sorbent integrity was maintained during the test period, which incorporated three sulfidations. It is recommended that treatment of the regeneration offgas be investigated, and that testing and development of a system to reduce the sulfur in this gas to elemental sulfur be initiated. In addition, it is suggested that a multiple reactor system be planned for continuous operation, to allow for long-term tests of downstream users of desulfurized gas. 7 references, 18 figures, 9 tables.

Steinfeld, G.

1984-03-01T23:59:59.000Z

246

A diffusion-kinetic model for pulverized-coal combustion and heat-and-mass transfer in a gas stream  

SciTech Connect

A diffusion-kinetic model for pulverized-coal combustion and heat-and-mass transfer in a gas stream is proposed, and the results of numerical simulation of the burnout dynamics of Kansk-Achinsk coals in the pulverized state at different treatment conditions and different model parameters are presented. The mathematical model describes the dynamics of thermochemical conversion of solid organic fuels with allowance for complex physicochemical phenomena of heat-and-mass exchange between coal particles and the gaseous environment.

E.A. Boiko; S.V. Pachkovskii [Polytechnic Institute, Federal University of Siberia, Krasnoyarsk (Russian Federation)

2008-12-15T23:59:59.000Z

247

Multi-objective fuel policies: Renewable fuel standards versus Fuel greenhouse gas intensity standards  

E-Print Network (OSTI)

Just. The welfare economics of a biofuel tax credit and theD. Zilberman. Challenge of biofuel: ?lling the tank withoutsuch as renewable fuel (biofuel) standards (RFS), fuel GHG

Rajagopal, Deepak

2010-01-01T23:59:59.000Z

248

Easing the natural gas crisis: Reducing natural gas prices through increased deployment of renewable energy and energy efficiency  

E-Print Network (OSTI)

Figure A-3. Annual Natural Gas Heat Rates, by Study UCS 04b-Barret, C. 1992. “U.S. Natural Gas Market: A DisequilibriumCalifornia’s Reliance on Natural Gas. Santa Monica, Calif. :

Wiser, Ryan; Bolinger, Mark; St. Clair, Matt

2004-01-01T23:59:59.000Z

249

Easing the natural gas crisis: Reducing natural gas prices through increased deployment of renewable energy and energy efficiency  

E-Print Network (OSTI)

1 2. Natural Gas Supply and Demand: A Review of Economicand the shape of the natural gas supply curve (measured byprice elasticity of natural gas supply). The reduction is

Wiser, Ryan; Bolinger, Mark; St. Clair, Matt

2004-01-01T23:59:59.000Z

250

Easing the natural gas crisis: Reducing natural gas prices through increased deployment of renewable energy and energy efficiency  

E-Print Network (OSTI)

2003a. Balancing Natural Gas Policy – Fueling the Demands of2003b. Balancing Natural Gas Policy – Fueling the Demands ofand Policy Options of California’s Reliance on Natural Gas.

Wiser, Ryan; Bolinger, Mark; St. Clair, Matt

2004-01-01T23:59:59.000Z

251

Easing the natural gas crisis: Reducing natural gas prices through increased deployment of renewable energy and energy efficiency  

E-Print Network (OSTI)

10% Figure A-3. Annual Natural Gas Heat Rates, by Study UCSCommission (CEC). 2003. Natural Gas Market Assessment. 100-3 (2): 129-169. Easing the Natural Gas Crisis Energy and

Wiser, Ryan; Bolinger, Mark; St. Clair, Matt

2004-01-01T23:59:59.000Z

252

Accounting for fuel price risk when comparing renewable to gas-fired generation: the role of forward natural gas prices  

E-Print Network (OSTI)

natural gas combined-cycle and combustion turbine power plantsnatural gas has become the fuel of choice for new power plantspower plants (Awerbuch 1993, 1994; Kahn & Stoft 1993). Specifically, in the context of natural gas-

Bolinger, Mark; Wiser, Ryan; Golove, William

2004-01-01T23:59:59.000Z

253

Easing the natural gas crisis: Reducing natural gas prices through increased deployment of renewable energy and energy efficiency  

E-Print Network (OSTI)

Total Expected U.S. Natural Gas Consumption Inverse PriceTotal Expected U.S. Natural Gas Consumption Inverse Pricetotal natural gas consumption in the United States (U.S. )

Wiser, Ryan; Bolinger, Mark; St. Clair, Matt

2004-01-01T23:59:59.000Z

254

Accounting for fuel price risk when comparing renewable to gas-fired generation: the role of forward natural gas prices  

E-Print Network (OSTI)

EIA), natural gas combined-cycle and combustion turbineof energy from a new combined cycle gas turbine, and moregas needed to fuel an 85 MW combined-cycle gas turbine (heat

Bolinger, Mark; Wiser, Ryan; Golove, William

2004-01-01T23:59:59.000Z

255

Easing the natural gas crisis: Reducing natural gas prices through increased deployment of renewable energy and energy efficiency  

E-Print Network (OSTI)

generation, which reduces natural gas demand and thus putsTheory on a Shifting Natural Gas Demand Curve Economicinward shift in the natural gas demand curve, leading to a

Wiser, Ryan; Bolinger, Mark; St. Clair, Matt

2004-01-01T23:59:59.000Z

256

1 2Using Auxiliary Gas Power for CCS Energy Needs in Retrofitted Coal Power Plants  

E-Print Network (OSTI)

Post-combustion capture retrofits are expected to a near-term option for mitigating CO2 emissions from existing coal-fired power plants. Much of the literature proposes using power from the existing coal plant and thermal integration of its supercritical steam cycle with the stripper reboiler to supply the energy needed for solvent regeneration and CO2 compression. This study finds that using an auxiliary natural gas turbine plant to meet the energetic demands of carbon capture and compression may make retrofits more attractive compared to using thermal integration in some circumstances. Natural gas auxiliary plants increase the power output of the base plant and reduce technological risk associated with CCS, but require favorable natural gas prices and regional electricity demand for excess electricity to make using an auxiliary plant more desirable. Three different auxiliary plant technologies were compared to integration for 90 % capture from an existing, 500 MW supercritical coal plant. CO2 capture and compression is simulated using Aspen Plus and a monoethylamine (MEA) absorption process. Thermoflow software is used to simulate three gas plant technologies. The three technologies assessed are the

Sarah Bashadi; Howard Herzog; Dava J. Newman; Sarah Bashadi

2010-01-01T23:59:59.000Z

257

Bioconversion of coal-derived synthesis gas to liquid fuels. [Butyribacterium methylotrophicum  

DOE Green Energy (OSTI)

The use of coal-derived synthesis gas as an industrial feedstock for production of fuels and chemicals has become an increasingly attractive alternative to present petroleum-based chemicals production. However, one of the major limitations in developing such a process is the required removal of catalyst poisons such as hydrogen sulfide (H{sub 2}S), carbonyl sulfide (COS), and other trace contaminants from the synthesis gas. Purification steps necessary to remove these are energy intensive and add significantly to the production cost, particularly for coals having a high sulfur content such as Illinois coal. A two-stage, anaerobic bioconversion process requiring little or no sulfur removal is proposed, where in the first stage the carbon monoxide (CO) gas is converted to butyric and acetic acids by the CO strain of Butyribacterium methylotrophicum. In the second stage, these acids along with the hydrogen (H{sub 2}) gas are converted to butanol, ethanol, and acetone by an acid utilizing mutant of Clostridium acetobutylicum. 18 figs., 18 tabs.

Jain, M.K.

1991-01-01T23:59:59.000Z

258

104 Int. J. Oil, Gas and Coal Technology, Vol. 4, No. 2, 2011 Copyright 2011 Inderscience Enterprises Ltd.  

E-Print Network (OSTI)

approach in modelling and simulation of shale gas reservoirs: application to New Albany Shale', Int. J. Oil104 Int. J. Oil, Gas and Coal Technology, Vol. 4, No. 2, 2011 Copyright © 2011 Inderscience Enterprises Ltd. A new practical approach in modelling and simulation of shale gas reservoirs: application

Mohaghegh, Shahab

259

Digital Gas Joins Asian Waste-to-Energy Consortium: To Eliminate Coal as a Power Plant Fuel  

E-Print Network (OSTI)

Digital Gas Joins Asian Waste-to-Energy Consortium: To Eliminate Coal as a Power Plant Fuel Digital upside in view of the power generation growth potential in Asia and the environmental friendly, cost's energy and farming centers in North America as an alternative to coal-fired power plants and a solution

Columbia University

260

Advanced coal-fueled industrial cogeneration gas turbine system particle removal system development  

SciTech Connect

Solar Turbines developed a direct coal-fueled turbine system (DCFT) and tested each component in subscale facilities and the combustion system was tested at full-scale. The combustion system was comprised of a two-stage slagging combustor with an impact separator between the two combustors. Greater than 90 percent of the native ash in the coal was removed as liquid slag with this system. In the first combustor, coal water slurry mixture (CWM) was injected into a combustion chamber which was operated loan to suppress NO{sub x} formation. The slurry was introduced through four fuel injectors that created a toroidal vortex because of the combustor geometry and angle of orientation of the injectors. The liquid slag that was formed was directed downward toward an impaction plate made of a refractory material. Sixty to seventy percent of the coal-borne ash was collected in this fashion. An impact separator was used to remove additional slag that had escaped the primary combustor. The combined particulate collection efficiency from both combustors was above 95 percent. Unfortunately, a great deal of the original sulfur from the coal still remained in the gas stream and needed to be separated. To accomplish this, dolomite or hydrated lime were injected in the secondary combustor to react with the sulfur dioxide and form calcium sulfite and sulfates. This solution for the sulfur problem increased the dust concentrations to as much as 6000 ppmw. A downstream particulate control system was required, and one that could operate at 150 psia, 1850-1900{degrees}F and with low pressure drop. Solar designed and tested a particulate rejection system to remove essentially all particulate from the high temperature, high pressure gas stream. A thorough research and development program was aimed at identifying candidate technologies and testing them with Solar`s coal-fired system. This topical report summarizes these activities over a period beginning in 1987 and ending in 1992.

Stephenson, M.

1994-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "gas coal renewables" 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

Putting downward pressure on natural gas prices: The impact of renewable energy and energy efficiency  

E-Print Network (OSTI)

or our findings. Natural Gas Supply and Demand: A Review ofThe price elasticity of natural gas supply is a measurethe responsiveness of natural gas supply to the price of the

Wiser, Ryan; Bolinger, Mark; St. Clair, Matthew

2004-01-01T23:59:59.000Z

262

Putting downward pressure on natural gas prices: The impact of renewable energy and energy efficiency  

E-Print Network (OSTI)

rgy Can Help Ease the Natural Gas Crunch. Cambridge, Mass. :Modeling Forum (EMF). 2003. Natural Gas, Fuel Diversity andM. de Leon. 2003. Natural Gas and Energy Pr ice Volatility.

Wiser, Ryan; Bolinger, Mark; St. Clair, Matthew

2004-01-01T23:59:59.000Z

263

The potential impact of renewable energy deployment on natural gas prices in New England  

E-Print Network (OSTI)

Energy Deployment on Natural Gas Prices in New England Datethe price and supply of natural gas have deepened in recentcan directly hedge natural gas price risk by reducing the

Wiser, Ryan; Bolinger, Mark

2004-01-01T23:59:59.000Z

264

Can Deployment of Renewable Energy and Energy Efficiency Put Downward Pressure on Natural Gas Prices  

E-Print Network (OSTI)

Supply Models of Natural Gas. ” The Bell Journal ofEnergy Can Help Ease the Natural Gas Crunch. Cambridge,California’s Reliance on Natural Gas. Santa Monica, Calif. :

Wiser, Ryan; Bolinger, Mark

2005-01-01T23:59:59.000Z

265

Can Deployment of Renewable Energy and Energy Efficiency Put Downward Pressure on Natural Gas Prices  

E-Print Network (OSTI)

1% reduction in U.S. natural gas demand could lead to long-and EE deployment on natural gas demand and wellhead prices,from a reduction in natural gas demand and prices. Supply

Wiser, Ryan; Bolinger, Mark

2005-01-01T23:59:59.000Z

266

The potential impact of renewable energy deployment on natural gas prices in New England  

E-Print Network (OSTI)

reduction in national natural gas demand may reduce thereduction in national natural gas demand may lead to a long-of these additions, natural gas demand among New England

Wiser, Ryan; Bolinger, Mark

2004-01-01T23:59:59.000Z

267

The potential impact of renewable energy deployment on natural gas prices in New England  

E-Print Network (OSTI)

more sizable impact on gas prices (e.g. , due to short-termEnergy Deployment on Natural Gas Prices in New England Datedirectly hedge natural gas price risk by reducing the need

Wiser, Ryan; Bolinger, Mark

2004-01-01T23:59:59.000Z

268

Durable zinc oxide-containing sorbents for coal gas desulfurization  

DOE Patents (OSTI)

Durable zinc-oxide containing sorbent pellets for removing hydrogen sulfide from a gas stream at an elevated temperature are made up to contain titania as a diluent, high-surface-area silica gel as a matrix material, and a binder. These materials are mixed, moistened, and formed into pellets, which are then dried and calcined. The resulting pellets undergo repeated cycles of sulfidation and regeneration without loss of reactivity and without mechanical degradation. Regeneration of the pellets is carried out by contacting the bed with an oxidizing gas mixture.

Siriwardane, R.V.

1994-12-31T23:59:59.000Z

269

Novel carbons from Illinois coal for natural gas storage. Technical report, September 1--November 30, 1994  

DOE Green Energy (OSTI)

The goal of this project is to develop a technology for producing microengineered adsorbent carbons from Illinois coal and to evaluate the potential application of these novel materials for storing natural gas for use in emerging low pressure, natural gas vehicles (NGV). Potentially, about two million tons of adsorbent could be consumed in natural gas vehicles by year 2000. If successful, the results obtained in this project could lead to the use of Illinois coal in a growing and profitable market that could exceed 6 million tons per year. During this reporting period, a pyrolysis-gasification reactor system was designed and assembled. Four carbon samples were produced from a {minus}20+100 mesh size fraction of an Illinois Basin Coal (IBC-106) using a three-step process. The three steps were: coal oxidation in air at 250 C, oxicoal (oxidized coal) devolatilization in nitrogen at 425 C and char gasification in 50% steam-50% nitrogen at 860 C. These initial tests were designed to evaluate the effects of pre-oxidation on the surface properties of carbon products, and to determine optimum reaction time and process conditions to produce an activated carbon with high surface area. Nitrogen-BET surface areas of the carbon products ranged from 700--800 m{sup 2}/g. Work is in progress to further optimize reaction conditions in order to produce carbons with higher surface areas. A few screening tests were made with a pressurized thermogravimetric (PTGA) to evaluate the suitability of this instrument for obtaining methane adsorption isotherms at ambient temperature and pressures ranging from one to 30 atmospheres. The preliminary results indicate that PTGA can be used for both the adsorption kinetic and equilibrium studies.

Rostam-Abadi, M.; Sun, J.; Lizzio, A.A. [Illinois State Geological Survey, Champaign, IL (United States); Fatemi, M. [Amoco Research Center, Naperville, IL (United States)

1994-12-31T23:59:59.000Z

270

Porosity of coal and shale: Insights from gas adsorption and SANS/USANS techniques  

Science Conference Proceedings (OSTI)

Two Pennsylvanian coal samples (Spr326 and Spr879-IN1) and two Upper Devonian-Mississippian shale samples (MM1 and MM3) from the Illinois Basin were studied with regard to their porosity and pore accessibility. Shale samples are early mature stage as indicated by vitrinite reflectance (R{sub o}) values of 0.55% for MM1 and 0.62% for MM3. The coal samples studied are of comparable maturity to the shale samples, having vitrinite reflectance of 0.52% (Spr326) and 0.62% (Spr879-IN1). Gas (N{sub 2} and CO{sub 2}) adsorption and small-angle and ultrasmall-angle neutron scattering techniques (SANS/USANS) were used to understand differences in the porosity characteristics of the samples. The results demonstrate that there is a major difference in mesopore (2-50 nm) size distribution between the coal and shale samples, while there was a close similarity in micropore (coal is pore-size specific and can vary significantly between coal samples; also, higher accessibility corresponds to higher adsorption capacity. Accessibility of pores in shale samples is low.

Mastalerz, Maria [Indiana Geological Survey; He, Lilin [ORNL; Melnichenko, Yuri B [ORNL; Rupp, John A [ORNL

2012-01-01T23:59:59.000Z

271

Advanced coal-fueled industrial cogeneration gas turbine system: Hot End Simulation Rig  

DOE Green Energy (OSTI)

This Hot End Simulation Rig (HESR) was an integral part of the overall Solar/METC program chartered to prove the technical, economic, an environmental feasibility of a coal-fueled gas turbine, for cogeneration applications. The program was to culminate in a test of a Solar Centaur Type H engine system operated on coal slurry fuel throughput the engine design operating range. This particular activity was designed to verify the performance of the Centaur Type H engine hot section materials in a coal-fired environment varying the amounts of alkali, ash, and sulfur in the coal to assess the material corrosion. Success in the program was dependent upon the satisfactory resolution of several key issues. Included was the control of hot end corrosion and erosion, necessary to ensure adequate operating life. The Hot End Simulation Rig addressed this important issue by exposing currently used hot section turbine alloys, alternate alloys, and commercially available advanced protective coating systems to a representative coal-fueled environment at turbine inlet temperatures typical of Solar`s Centaur Type H. Turbine hot end components which would experience material degradation include the transition duct from the combustor outlet to the turbine inlet, the shroud, nozzles, and blades. A ceramic candle filter vessel was included in the system as the particulate removal device for the HESR. In addition to turbine material testing, the candle material was exposed and evaluated. Long-term testing was intended to sufficiently characterize the performance of these materials for the turbine.

Galica, M.A.

1994-02-01T23:59:59.000Z

272

Cracking of simulated oil refinery off-gas over a coal char, petroleum coke, and quartz  

Science Conference Proceedings (OSTI)

The cracking of oil refinery off-gas, simulated with a gas mixture containing methane (51%), ethylene (21.4%), ethane (21.1%), and propane (6.5%), over a coal char, petroleum coke, and quartz, respectively, has been studied in a fixed bed reactor. The experiments were performed at temperatures between 850 and 1000{sup o}C and at atmospheric pressure. The results show that the conversions of all species considered increased with increasing temperature. Ethane and propane completely decomposed over all three bed materials in the temperature range investigated. However, the higher initial conversion rates of methane and ethylene cracking at all temperatures were observed only over the coal char and not on the petroleum coke and quartz, indicating a significant catalytic effect of the coal char on methane and ethylene cracking. Methane and ethylene conversions decreased with reaction time due to deactivation of the coal char by carbon deposition on the char surface and, in the later stage of a cracking experiment, became negative, suggesting that methane and ethylene had been formed during the cracking of ethane and propane. 16 refs., 13 figs., 2 tabs.

Yuan Zhang; Jin-hu Wu; Dong-ke Zhang [Chinese Academy of Sciences, Taiyuan (China). Institute of Coal Chemistry

2008-03-15T23:59:59.000Z

273

Renewable Energy Evaluation Tools  

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

RENEWABLE ENERGY RENEWABLE ENERGY EVALUATION TOOLS Andy Walker, PhD PE Principal Engineer, NREL Renewable Energy Round Table May 2, 2012 2 TECHNICAL ASSESSMENT AND SCREENING TOOLS WE USE IN OUR PROJECTS Campus/Base Assessments INFRASTRUCTURE BUILDINGS ASSESSMENT RENEWABLE SUPPLY SIDE VEHICLES & TOOLS Campus/Base Assessments INFRASTRUCTURE BUILDINGS ASSESSMENT RENEWABLE SUPPLY SIDE VEHICLES & TOOLS 9 9 Renewable Energy Technologies Photovoltaics Daylighting Biomass Heat/Power Concentrating Solar Heat/Power Solar Vent Air Preheat Solar Water Heating Wind Power Ground Source Heat Pump Landfill Gas 10 10 Renewable Energy Resources Geographical Information System (GIS) Datasets * NREL Datasets (http://www.nrel.gov/gis/) - solar radiation 10x10 km grid

274

Simulated coal gas MCFC power plant system verification  

DOE Green Energy (OSTI)

The following tasks are included in this project: Commercialization; Power plant development; Manufacturing facilities development; Test facility development; Stack research; and Advanced research and technology development. This report briefly describes the subtasks still to be completed: Power plant system test with reformed natural gas; Upgrading of existing, US government-owned, test facilities; and Advanced MCFC component research.

NONE

1998-02-01T23:59:59.000Z

275

Program on Technology Innovation: Nanoparticles at Coal and Gas Fired Power Plants  

Science Conference Proceedings (OSTI)

Nanoparticles—particles with diameters less than 100 nanometers—can occur from the combustion of fossil fuel, such as coal and natural gas. Recently, nanoparticles have gained the industry’s attention because they may be associated with adverse health effects. Despite potential health hazards, little published data exist concerning the types and concentrations of nanoparticles in work environments. This report is the first published study on concentration and composition of nanoparticles in power plant w...

2008-11-26T23:59:59.000Z

276

Pore structure and reactivity changes in hot coal gas desulfurization sorbents  

Science Conference Proceedings (OSTI)

The primary objective of the project was the investigation of the pore structure and reactivity changes occurring in metal/metal oxide sorbents used for desulfurization of hot coal gas during sulfidation and regeneration, with particular emphasis placed on the effects of these changes on the sorptive capacity and efficiency of the sorbents. Commercially available zinc oxide sorbents were used as model solids in our experimental investigation of the sulfidation and regeneration processes.

Sotirchos, S.V.

1991-05-01T23:59:59.000Z

277

KINETICS OF DIRECT OXIDATION OF H2S IN COAL GAS TO ELEMENTAL SULFUR  

DOE Green Energy (OSTI)

The direct oxidation of H{sub 2}S to elemental sulfur in the presence of SO{sub 2} is ideally suited for coal gas from commercial gasifiers with a quench system to remove essentially all the trace contaminants except H{sub 2}S. This direct oxidation process has the potential to produce a super clean coal gas more economically than both conventional amine-based processes and the hot-gas desulfurization using regenerable metal oxide sorbents followed by Direct Sulfur Recovery Process. The objective of this research is to support the near- and long-term process development efforts to commercialize this direct oxidation technology. The objectives of this research are to measure kinetics of direct oxidation of H{sub 2}S to elemental sulfur in the presence of a simulated coal gas mixture containing SO{sub 2}, H{sub 2}, and moisture, using 160-{micro}m C-500-04 alumina catalyst particles and a micro bubble reactor, and to develop kinetic rate equations and model the direct oxidation process to assist in the design of large-scale plants. This heterogeneous catalytic reaction has gaseous reactants such as H{sub 2}S and SO{sub 2}. However, this heterogeneous catalytic reaction has heterogeneous products such as liquid elemental sulfur and steam. To achieve the above-mentioned objectives, experiments on conversion of hydrogen sulfide into liquid elemental sulfur were carried out for the space time range of 1-6 milliseconds at 125-155 C to evaluate effects of reaction temperature, moisture concentration, reaction pressure on conversion of hydrogen sulfide into liquid elemental sulfur. Simulated coal gas mixtures consist of 70 v% hydrogen, 2,500-7,500-ppmv hydrogen sulfide, 1,250-3,750 ppmv sulfur dioxide, and 0-15 vol% moisture, and nitrogen as remainder. Volumetric feed rates of a simulated coal gas mixture to a micro bubble reactor are 100 cm{sup 3}/min at room temperature and atmospheric pressure. The temperature of the reactor is controlled in an oven at 125-155 C. The pressure of the reactor is maintained at 40-170 psia.

K.C. Kwon

2004-01-01T23:59:59.000Z

278

KINETICS OF DIRECT OXIDATION OF H2S IN COAL GAS TO ELEMENTAL SULFUR  

DOE Green Energy (OSTI)

The direct oxidation of H{sub 2}S to elemental sulfur in the presence of SO{sub 2} is ideally suited for coal gas from commercial gasifiers with a quench system to remove essentially all the trace contaminants except H{sub 2}S. This direct oxidation process has the potential to produce a super clean coal gas more economically than both conventional amine-based processes and the hot-gas desulfurization using regenerable metal oxide sorbents followed by Direct Sulfur Recovery Process. The objective of this research is to support the near- and long-term process development efforts to commercialize this direct oxidation technology. The objectives of this research are to measure kinetics of direct oxidation of H{sub 2}S to elemental sulfur in the presence of a simulated coal gas mixture containing SO{sub 2}, H{sub 2}, and moisture, using 160-{micro}m C-500-04 alumina catalyst particles and a micro bubble reactor, and to develop kinetic rate equations and model the direct oxidation process to assist in the design of large-scale plants. This heterogeneous catalytic reaction has gaseous reactants such as H{sub 2}S and SO{sub 2}. However, this heterogeneous catalytic reaction has heterogeneous products such as liquid elemental sulfur and steam. To achieve the above-mentioned objectives, experiments on conversion of hydrogen sulfide into liquid elemental sulfur were carried out for the space time range of 0.059-0.87 seconds at 125-155 C to evaluate effects of reaction temperature, H{sub 2}S concentration, reaction pressure, and catalyst loading on conversion of hydrogen sulfide into liquid elemental sulfur. Simulated coal gas mixtures consist of 62-78 v% hydrogen, 3,000-7,000-ppmv hydrogen sulfide, 1,500-3,500 ppmv sulfur dioxide, and 10 vol % moisture, and nitrogen as remainder. Volumetric feed rates of a simulated coal gas mixture to a micro bubble reactor are 50 cm{sup 3}/min at room temperature and atmospheric pressure. The temperature of the reactor is controlled in an oven at 125-155 C. The pressure of the reactor is maintained at 40-170 psia. The molar ratio of H{sub 2}S to SO{sub 2} in the bubble reactor is maintained at 2 for all the reaction experiment runs.

K.C. Kwon

2005-01-01T23:59:59.000Z

279

Fuel Industry Response to Power Industry Environmental Pressures: An Analysis of Risk and Investment in the Coal Supply Chain and Na tural Gas Industry  

Science Conference Proceedings (OSTI)

This report examines the question of how mounting environmental pressures on coal-fired generation will impact investment in fuel supply and transportation. If destined for demise, are coal companies cutting back investments or exiting the business? Alternatively, are natural gas companies gearing up for a financial boom? The study specifically investigates a "clean coal" case of greatly tightened NOx and SO2 limits as well as a "low coal" case of much reduced coal use to meet CO2 control objectives.

1999-07-02T23:59:59.000Z

280

Investigation of Effects of Coal and Biomass Contaminants on the Performance of Water-Gas-Shift and Fischer-Tropsch Catalysts  

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

Effects of Coal Effects of Coal and Biomass Contaminants on the Performance of Water-Gas-Shift and Fischer-Tropsch Catalysts Background Coal-Biomass-to-Liquids (CBTL) processes gasify coal, biomass, and mixtures of coal/ biomass to produce synthesis gas (syngas) that can be converted to liquid hydrocarbon fuels. Positive benefits of these processes include the use of feedstocks from domestic sources and lower greenhouse gas production than can be achieved from using conventional petroleum-based fuels. However, syngas generated by coal and biomass co-gasification contains a myriad of trace contaminants that may poison the water- gas-shift (WGS) and Fischer-Tropsch (FT) catalysts used in the gas-to-liquid processes. While the effect of coal contaminants on FT processes is well studied, more research

Note: This page contains sample records for the topic "gas coal renewables" 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

Status of Westinghouse hot gas filters for coal and biomass power systems  

SciTech Connect

Several advanced, coal and biomass-based combustion turbine power generation technologies using fuels (IGCC, PFBC, Topping-PFBC, HIPPS) are currently under development and demonstration. A key developing technology in these power generation systems is the hot gas filter. These power generation technologies must utilize highly reliable and efficient hot gas filter systems if their full thermal efficiency and cost potential is to be realized. This paper reviews the recent test and design progress made by Westinghouse in the development and demonstration of hot gas ceramic barrier filters toward the goal of reliability. The objective of this work is to develop and qualify, through analysis and testing, practical hot gas ceramic barrier filter systems that meet the performance and operational requirements for these applications.

Newby, R.A.; Lippert, T.E.; Alvin, M.A.; Burck, G.J.; Sanjana, Z.N. [Westinghouse Electric Corp., Pittsburgh, PA (United States)

1999-07-01T23:59:59.000Z

282

Easing the natural gas crisis: Reducing natural gas prices through increased deployment of renewable energy and energy efficiency  

E-Print Network (OSTI)

Energy Modeling System); POEMS (Policy Office Electricity Modeling System), CRA (Charles River Associates), NANGAS (North American Natural Gas AnalysisEnergy Modeling System); POEMS (Policy Office Electricity Modeling System), CRA (Charles River Associates), NANGAS (North American Natural Gas Analysis

Wiser, Ryan; Bolinger, Mark; St. Clair, Matt

2004-01-01T23:59:59.000Z

283

PRELIMINARY CHARACTERIZATION OF CO2 SEPARATION AND STORAGE PROPERTIES OF COAL GAS RESERVOIRS  

SciTech Connect

An attractive alternative of sequestering CO{sub 2} is to inject it into coalbed methane reservoirs, particularly since it has been shown to enhance the production of methane during near depletion stages. The basis for enhanced coalbed methane recovery and simultaneous sequestration of carbon dioxide in deep coals is the preferential sorption property of coal, with its affinity for carbon dioxide being significantly higher than that for methane. Yet, the sorption behavior of coal under competitive sorptive environment is not fully understood. Hence, the original objective of this research study was to carry out a laboratory study to investigate the effect of studying the sorption behavior of coal in the presence of multiple gases, primarily methane, CO{sub 2} and nitrogen, in order to understand the mechanisms involved in displacement of methane and its movement in coal. This had to be modified slightly since the PVT property of gas mixtures is still not well understood, and any laboratory work in the area of sorption of gases requires a definite equation of state to calculate the volumes of different gases in free and adsorbed forms. This research study started with establishing gas adsorption isotherms for pure methane and CO{sub 2}. The standard gas expansion technique based on volumetric analysis was used for the experimental work with the additional feature of incorporating a gas chromatograph for analysis of gas composition. The results were analyzed first using the Langmuir theory. As expected, the Langmuir analysis indicated that CO{sub 2} is more than three times as sorptive as methane. This was followed by carrying out a partial desorption isotherm for methane, and then injecting CO{sub 2} to displace methane. The results indicated that CO{sub 2} injection at low pressure displaced all of the sorbed methane, even when the total pressure continued to be high. However, the displacement appeared to be occurring due to a combination of the preferential sorption property of coal and reduction in the partial pressure of methane. As a final step, the Extended Langmuir (EL) model was used to model the coal-methane-CO{sub 2} binary adsorption system. The EL model was found to be very accurate in predicting adsorption of CO{sub 2}, but not so in predicting desorption of methane. The selectivity of CO{sub 2} over methane was calculated to be 4.3:1. This is, of course, not in very good agreement with the measured values which showed the ratio to be 3.5:1. However, the measured results are in good agreement with the field observation at one of the CO{sub 2} injection sites. Based on the findings of this study, it was concluded that low pressure injection of CO{sub 2} can be fairly effective in displacing methane in coalbed reservoirs although this might be difficult to achieve in field conditions. Furthermore, the displacement of methane appears to be not only due to the preferential sorption of methane, but reduction in partial pressure as well. Hence, using a highly adsorbing gas, such as CO{sub 2}, has the advantages of inert gas stripping and non-mixing since the injected gas does not mix with the recovered methane.

John Kemeny; Satya Harpalani

2004-03-01T23:59:59.000Z

284

Accounting for fuel price risk when comparing renewable to gas-fired generation: the role of forward natural gas prices  

E-Print Network (OSTI)

history nevertheless does not lend ready support to the view that the EIA’s reference case natural gas

Bolinger, Mark; Wiser, Ryan; Golove, William

2004-01-01T23:59:59.000Z

285

Recovery Act: Clean Coal Power Initiative | Department of Energy  

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

Clean Coal Power Initiative Recovery Act: Clean Coal Power Initiative A report detailling the Clean Coal Power initiative funded under the American Recovery and Renewal Act of...

286

Can Deployment of Renewable Energy and Energy Efficiency Put Downward Pressure on Natural Gas Prices  

E-Print Network (OSTI)

Energy Modeling System); POEMS (Policy Office Electricity Modeling System), CRA (Charles River Associates), NANGAS (North American Natural Gas Analysis

Wiser, Ryan; Bolinger, Mark

2005-01-01T23:59:59.000Z

287

IEA-Renewable Energy Technologies, Bioenergy Agreement Task 37: Energy from Biogas and Landfill Gas  

E-Print Network (OSTI)

and Landfill Gas Teknologiområde: Anvendt forskning og udvikling, herunder viden formidling, -udveksling og-Bioenergy, Task 37- Energy from Biogas and Landfill Gas", via samarbejde, informationsudveksling, fælles analyser and landfill gas. I dette tidsinterval er en række aktiviteter blevet gennemført, herunder deltagelse til task

288

Coal Blending for the Reduction of Acid Gas Emissions: A Characterization of the Milling and Combustion Blends of Powder River Basin Coal and Bituminous Coal  

Science Conference Proceedings (OSTI)

This report describes a systematic study of performance and emission parameters from the combustion of Eastern bituminous coal, a Powder River Basin (PRB) coal, and various blends of these two coals. This study also investigated the effects of coal blending on mill performance, combustion, particulate emissions, and various emissions.

2004-09-21T23:59:59.000Z

289

Preliminary technical data report: WyCoalGas project water system. Final technical report, November 1980-May 1982. [Proposed WyCoalGas project, Converse County, Wyoming  

SciTech Connect

The WyCoalGas, Inc. Proposed coal gasification plant site is approximately 16 miles north of Douglas, Wyoming, located generally in Sections 27 and 34, T35N, R70W of the sixth prinicpal meridian. The plant site is located in typical high plateau plains of central Wyoming. Climate in the area is typical of semi-arid central Wyoming and is subject to wide variations in temperature. Precipitation in the area averages about 14 inches per year, of which about 10 inches fall during the April-September irrigation season. Projected water requirements at the plant site are 6020 acre-feet per year. Since the proposed plant site is not near any major streams or rivers, water must be transported to it. Water will be supplied from four sources - two surface water and two groundwater. The two surface water sources are LaPrele Reservoir and flood flows from the North Platte River with a 1974 appropriations date. LaPrele Reservoir is located approximately 14 miles west of Douglas, Wyoming, and is shown on Figure A-1. Water will be released from LaPrele Reservoir and flow down LaPrele Creek to the North Platte River. Water from the North Platte River will be diverted at a point in Section 7 of T33N, R71W. The LaPrele water and excess water from the North Platte will be pumped from the river and stored in Panhandle Reservoir No. 1, which is also referred to as Combs Reservoir. A pipeline will convey water from Panhandle Reservoir No. 1 to the coal gasification plant site. The two groundwater sources are located north of Douglas and west of Douglas.

1982-01-01T23:59:59.000Z

290

Mercury Speciation in Coal-Fired Power Plant Flue Gas-Experimental Studies and Model Development  

SciTech Connect

The overall goal of the project was to obtain a fundamental understanding of the catalytic reactions that are promoted by solid surfaces present in coal combustion systems and develop a mathematical model that described key phenomena responsible for the fate of mercury in coal-combustion systems. This objective was achieved by carefully combining laboratory studies under realistic process conditions using simulated flue gas with mathematical modeling efforts. Laboratory-scale studies were performed to understand the fundamental aspects of chemical reactions between flue gas constituents and solid surfaces present in the fly ash and their impact on mercury speciation. Process models were developed to account for heterogeneous reactions because of the presence of fly ash as well as the deliberate addition of particles to promote Hg oxidation and adsorption. Quantum modeling was used to obtain estimates of the kinetics of heterogeneous reactions. Based on the initial findings of this study, additional work was performed to ascertain the potential of using inexpensive inorganic sorbents to control mercury emissions from coal-fired power plants without adverse impact on the salability fly ash, which is one of the major drawbacks of current control technologies based on activated carbon.

Radisav Vidic; Joseph Flora; Eric Borguet

2008-12-31T23:59:59.000Z

291

Accounting for fuel price risk: Using forward natural gas prices instead of gas price forecasts to compare renewable to natural gas-fired generation  

E-Print Network (OSTI)

Which way the natural gas price: an attempt to predict theas a Hedge Against Gas Price Movement. ” Public UtilitiesHedge Against Natural Gas Price Movements. ” http://

Bolinger, Mark; Wiser, Ryan; Golove, William

2003-01-01T23:59:59.000Z

292

Life Cycle Greenhouse Gas Emissions from Electricity Generation (Fact Sheet), NREL (National Renewable Energy Laboratory)  

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

LCA can help determine environmental burdens from "cradle LCA can help determine environmental burdens from "cradle to grave" and facilitate more consistent comparisons of energy technologies. Figure 1. Generalized life cycle stages for energy technologies Source: Sathaye et al. (2011) Life cycle GHG emissions from renewable electricity generation technologies are generally less than those from fossil fuel-based technologies, based on evidence assembled by this project. Further, the proportion of GHG emissions from each life cycle stage differs by technology. For fossil-fueled technologies, fuel combustion during operation of the facility emits the vast majority of GHGs. For nuclear and renewable energy technologies, the majority of GHG emissions occur upstream of operation. LCA of Energy Systems

293

Technology options and effective policies to reduce greenhouse gas  

E-Print Network (OSTI)

in increased security of supply - depending on the role of natural gas. When Europe's energy system faces there is a great deal of uncertainty to this assumption. Natural gas prices within Europe, although not explicitly policy. However, in this case, renewables, natural gas and advanced coal- fired plants with CCS are key

294

Regional GHG Emissions O tlook Greenhouse Gas and the Regional  

E-Print Network (OSTI)

6/5/2013 1 Regional GHG Emissions O tlook Greenhouse Gas and the Regional Power System Symposium Natural Gas Prices 6. Potential Federal CO2 regulatory cost policy Two basic CO2 Cost 10 20 30 40 Million Generation Coal 19 % 15 % 13 % Natural Gas 10 % 10 % 14 % Wind & Other Renewables 8 % 12 % 13 % Emission

295

Combustion of Illinois coals and chars with natural gas. [Quarterly] technical report, March 1, 1992--May 31, 1992  

Science Conference Proceedings (OSTI)

Combined combustion of coal and natural gas offers advantages compared to burning coal or natural gas alone. For example, low volatile coals or low volatile chars derived from treatment or gasification processes can be of limited use due to their poor flammability characteristics. However, the use of natural gas in conjunction with the solid fuel can provide the necessary ``volatiles`` to enhance the combustion. Additionally, natural gas provides a clean cofiring fuel source which can enhance the usefulness of coals with high sulfur content. Addition of natural gas may reduce SO{sub x} emissions through increased sulfur retention in the ash and reduce NO{sub x} emissions by varying local stoichiometry and temperature levels. This research program seeks to clarify the contributions and to identify the controlling mechanisms of coining natural gas with Illinois coal through studies of particle ignition, burning rates and ash characterization. The first two quarters focused on the ignition delay measurements and their analysis, along with the incorporation of particle porosity into the burning rate model. The emphasis of the third quarter was on a more detailed understanding of the burning rate process, as well as understanding of cofiring`s effects on sulfur retention. The contributions of particle burning area to the quantification of the particle burning mechanisms have been shown to be important and continue to be investigated. Ash samples for various methane concentrations under similar other conditions have shown positive trends in reducing S0{sub 2} emission through increased sulfur capture in the ash.

Buckius, R.O.; Peters, J.E.; Krier, H.

1992-10-01T23:59:59.000Z

296

"1. Walter Scott Energy Center","Coal","MidAmerican Energy Co",1660  

U.S. Energy Information Administration (EIA) Indexed Site

Iowa" Iowa" "1. Walter Scott Energy Center","Coal","MidAmerican Energy Co",1660 "2. George Neal North","Coal","MidAmerican Energy Co",957 "3. Louisa","Coal","MidAmerican Energy Co",746 "4. Ottumwa","Coal","Interstate Power and Light Co",696 "5. George Neal South","Coal","MidAmerican Energy Co",645 "6. Duane Arnold Energy Center","Nuclear","NextEra Energy Duane Arnold LLC",601 "7. Emery Station","Gas","Interstate Power and Light Co",518 "8. Greater Des Moines","Gas","MidAmerican Energy Co",496 "9. Pioneer Prairie Wind Farm","Other Renewables","Pioneer Prairie Wind Farm I, LLC",300

297

THE DEVELOPMENT AND APPLICATION OF GAS TURBINES IN SOUTH AFRICA WITH SPECIAL REFERENCE TO COAL AND NUCLEAR FUELS  

SciTech Connect

Aspects of gas turbine development with emphasis on applications in South Africa are discussed. A review of developmental work in various parts of the world on coal burning turbines is presented and local efforts on conventional combustion chambers and resonant combustion systems are outlined. The possible applications of gas turbines to nuclear reactors in South Africa are also examined. (J.R.D.)

Grant, W.L.; Roux, A.J.A.

1959-07-01T23:59:59.000Z

298

Quantifying the value that energy efficiency and renewable energy provide as a hedge against volatile natural gas prices  

E-Print Network (OSTI)

and renewable energy by equating it with the cost ofand renewable energy are often compared to the cost ofrenewable energy can provide price stability at lower cost

Bolinger, Mark; Wiser, Ryan; Bachrach, Devra; Golove, William

2002-01-01T23:59:59.000Z

299

Renewable energy annual 1996  

DOE Green Energy (OSTI)

This report presents summary data on renewable energy consumption, the status of each of the primary renewable technologies, a profile of each of the associated industries, an analysis of topical issues related to renewable energy, and information on renewable energy projects worldwide. It is the second in a series of annual reports on renewable energy. The renewable energy resources included in the report are biomass (wood and ethanol); municipal solid waste, including waste-to-energy and landfill gas; geothermal; wind; and solar energy, including solar thermal and photovoltaic. The report also includes various appendices and a glossary.

NONE

1997-03-01T23:59:59.000Z

300

A Low Cost and High Efficient Facility for Removal of $\\SO_{2}$ and $\\NO_{x}$ in the Flue Gas from Coal Fire Power Plant  

E-Print Network (OSTI)

A Low Cost and High Efficient Facility for Removal of $\\SO_{2}$ and $\\NO_{x}$ in the Flue Gas from Coal Fire Power Plant

Pei, Y J; Dong, X; Feng, G Y; Fu, S; Gao, H; Hong, Y; Li, G; Li, Y X; Shang, L; Sheng, L S; Tian, Y C; Wang, X Q; Wang, Y; Wei, W; Zhang, Y W; Zhou, H J

2001-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "gas coal renewables" 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

High-pressure coal-fired ceramic air heater for gas turbine applications. Technical quarterly progress report, May 1994--July 1994  

SciTech Connect

Progress is reported on the development of a coal-fired ceramic air heater for gas turbine applications. This report describes component development.

1996-02-01T23:59:59.000Z

302

COAL & POWER SYSTEMS  

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

COAL & POWER SYSTEMS COAL & POWER SYSTEMS STRATEGIC & MULTI-YEAR PROGRAM PLANS U.S. DEPARTMENT OF ENERGY * OFFICE OF FOSSIL ENERGY GREENER, SOONER... THROUGH TECHNOLOGY INTRODUCTION .......... i-1 STRATEGIC PLAN ........ 1-1 PROGRAM PLANS Vision 21 .......................... 2-1 Central Power Systems ...... 3-1 Distributed Generation ..... 4-1 Fuels ................................ 5-1 Carbon Sequestration ....... 6-1 Advanced Research ........... 7-1 TABLE OF CONTENTS STRATEGIC & MULTI-YEAR PROGRAM PLANS STRENGTH THROUGH SCIENCE... A "GREENER, SOONER" PHILOSOPHY Coal, natural gas, and oil fuel about 70 percent of the electricity generated in the United States. As promising as renewable and other alternative fuels are, it will be several decades before they can make significant energy contributions to the Nation's

303

Reclamation of abandoned surface coal mined land using flue gas desulfurization products  

SciTech Connect

Details are given of a field-scale research project where the Fleming site, in Ohio, of highly degraded and acid-forming abandoned surface coal-mined land, was reclaimed using a dry flue gas desulfurization product from an atmospheric fluidized bed combustion burner at a General Motors plant Pontiac, MI, which burned eastern Ohio coal and used dolomitic limestone for desulfurization. Plots were seeded with a mixture of grasses, wheat and clover, in 1994 and soil and water samples were analysed in 1995 and in 2009. It was found that FGD-treated plots promoted good regenerative growth, similar to that in plots using more concentrated re-soil material. The FGD treatment also greatly improved overall water quality. 3 figs., 4 tabs.

Chen, L.; Kost, D.; Dick, W.A. [Ohio State University, OH (United States)

2009-07-01T23:59:59.000Z

304

Carbon formation and metal dusting in hot-gas cleanup systems of coal gasifiers  

SciTech Connect

The product gas resulting from the partial oxidation of Carboniferous materials in a gasifier is typically characterized by high carbon and sulfur, but low oxygen, activities and, consequently, severe degradation of the structural and functional materials can occur. The objective of this task was to establish the potential risks of carbon deposition and metal dusting in advanced coal gasification processes by examining the current state of knowledge regarding these phenomena, making appropriate thermochemical calculations for representative coal gasifiers, and addressing possible mitigation methods. The paper discusses carbon activities, iron-based phase stabilities, steam injection, conditions that influence kinetics of carbon deposition, and influence of system operating parameters on carbon deposition and metal dusting.

Judkins, R.R.; Tortorelli, P.F.; Judkins, R.R.; DeVan, J.H.; Wright, I.G. [Oak Ridge National Lab., TN (United States). Metals and Ceramics Div.

1995-11-01T23:59:59.000Z

305

Novel carbons from Illinois coal for natural gas storage. Quarterly report, 1 December 1994--28 February 1995  

DOE Green Energy (OSTI)

The goal of this project is to develop a technology for producing microengineered adsorbent carbons from Illinois coal and to evaluate the potential application of these novel materials for storing natural gas for use in emerging low pressure, natural gas vehicles (NGV). The focus of the project is to design and engineer adsorbents that meet or exceed the performance and cost targets established for low-pressure natural gas storage materials. Potentially, about two million tons of adsorbent could be consumed in natural gas vehicles by year 2000. If successful, the results obtained in this project could lead to the use of Illinois coal in a sowing and profitable market that could exceed 6 million tons per year. During this reporting period, a series of experiments were made to evaluate the effect of coal pre-oxidation, coal pyrolysis, and char activation on the surface area development and methane adsorption capacity of activated carbons/chars made from IBC-102. The optimum production conditions were determined to be: coal oxidation in air at 225C, oxicoal (oxidized coal); devolatilization in nitrogen at 400C; and char gasification in 50% steam in nitrogen at 850C. Nitrogen BET surface areas of the carbon products ranged from 800--1100 m{sup 2}/g. Methane adsorption capacity of several Illinois coal derived chars and a 883 m{sup 2}/g commercial activated carbon were measured using a pressurized thermogaravimetric analyzer at pressures up to 500 psig. Methane adsorption capacity (g/g) of the chars were comparable to that of the commercial activated carbon manufactured by Calgon Carbon. It was determined that the pre-oxidation is a key processing step for producing activated char/carbon with high surface area and high methane adsorption capacity. The results to date are encouraging and warrant further research and development in tailored activated char from Illinois coal for natural gas storage.

Rostam-Abadi, M.; Sun, Jian; Lizzio, A.A. [Illinois State Geological Survey, Urbana, IL (United States); Fatemi, M. [Sperry Univac, St. Paul, MN (United States)

1995-12-31T23:59:59.000Z

306

Accounting for fuel price risk: Using forward natural gas prices instead of gas price forecasts to compare renewable to natural gas-fired generation  

E-Print Network (OSTI)

CEC). 2002. Natural Gas Supply and Infrastructureincluded a long-term natural gas supply deal for years 2004fixed-price gas supply contracts and natural gas storage. As

Bolinger, Mark; Wiser, Ryan; Golove, William

2003-01-01T23:59:59.000Z

307

Comparative life-cycle air emissions of coal, domestic natural gas, LNG, and SNG for electricity generation  

SciTech Connect

The U.S. Department of Energy (DOE) estimates that in the coming decades the United States' natural gas (NG) demand for electricity generation will increase. Estimates also suggest that NG supply will increasingly come from imported liquefied natural gas (LNG). Additional supplies of NG could come domestically from the production of synthetic natural gas (SNG) via coal gasification-methanation. The objective of this study is to compare greenhouse gas (GHG), SOx, and NOx life-cycle emissions of electricity generated with NG/LNG/SNG and coal. This life-cycle comparison of air emissions from different fuels can help us better understand the advantages and disadvantages of using coal versus globally sourced NG for electricity generation. Our estimates suggest that with the current fleet of power plants, a mix of domestic NG, LNG, and SNG would have lower GHG emissions than coal. If advanced technologies with carbon capture and sequestration (CCS) are used, however, coal and a mix of domestic NG, LNG, and SNG would have very similar life-cycle GHG emissions. For SOx and NOx we find there are significant emissions in the upstream stages of the NG/LNG life-cycles, which contribute to a larger range in SOx and NOx emissions for NG/LNG than for coal and SNG. 38 refs., 3 figs., 2 tabs.

Paulina Jaramillo; W. Michael Griffin; H. Scott Matthews [Carnegie Mellon University, Pittsburgh, PA (United States). Civil and Environmental Engineering Department

2007-09-15T23:59:59.000Z

308

Coal pump  

DOE Patents (OSTI)

A device for pressurizing pulverized coal and circulating a carrier gas is disclosed. This device has utility in a coal gasification process and eliminates the need for a separate collection hopper and eliminates the separate compressor.

Bonin, John H. (Sunnyvale, CA); Meyer, John W. (Palo Alto, CA); Daniel, Jr., Arnold D. (Alameda County, CA)

1983-01-01T23:59:59.000Z

309

Accounting for fuel price risk: Using forward natural gas prices instead of gas price forecasts to compare renewable to natural gas-fired generation  

E-Print Network (OSTI)

supply contracts and natural gas storage. As shown below insupply contracts and natural gas storage. As shown below in

Bolinger, Mark; Wiser, Ryan; Golove, William

2003-01-01T23:59:59.000Z

310

Life Cycle Greenhouse Gas Emissions of Coal-Fired Electricity Generation: Systematic Review and Harmonization  

Science Conference Proceedings (OSTI)

This systematic review and harmonization of life cycle assessments (LCAs) of utility-scale coal-fired electricity generation systems focuses on reducing variability and clarifying central tendencies in estimates of life cycle greenhouse gas (GHG) emissions. Screening 270 references for quality LCA methods, transparency, and completeness yielded 53 that reported 164 estimates of life cycle GHG emissions. These estimates for subcritical pulverized, integrated gasification combined cycle, fluidized bed, and supercritical pulverized coal combustion technologies vary from 675 to 1,689 grams CO{sub 2}-equivalent per kilowatt-hour (g CO{sub 2}-eq/kWh) (interquartile range [IQR]= 890-1,130 g CO{sub 2}-eq/kWh; median = 1,001) leading to confusion over reasonable estimates of life cycle GHG emissions from coal-fired electricity generation. By adjusting published estimates to common gross system boundaries and consistent values for key operational input parameters (most importantly, combustion carbon dioxide emission factor [CEF]), the meta-analytical process called harmonization clarifies the existing literature in ways useful for decision makers and analysts by significantly reducing the variability of estimates ({approx}53% in IQR magnitude) while maintaining a nearly constant central tendency ({approx}2.2% in median). Life cycle GHG emissions of a specific power plant depend on many factors and can differ from the generic estimates generated by the harmonization approach, but the tightness of distribution of harmonized estimates across several key coal combustion technologies implies, for some purposes, first-order estimates of life cycle GHG emissions could be based on knowledge of the technology type, coal mine emissions, thermal efficiency, and CEF alone without requiring full LCAs. Areas where new research is necessary to ensure accuracy are also discussed.

Whitaker, M.; Heath, G. A.; O'Donoughue, P.; Vorum, M.

2012-04-01T23:59:59.000Z

311

"1. Four Corners","Coal","Arizona Public Service Co",2100 "2. San Juan","Coal","Public Service Co of NM",1643  

U.S. Energy Information Administration (EIA) Indexed Site

Mexico" Mexico" "1. Four Corners","Coal","Arizona Public Service Co",2100 "2. San Juan","Coal","Public Service Co of NM",1643 "3. Luna Energy Facility","Gas","Public Service Co of NM",559 "4. Hobbs Generating Station","Gas","CAMS NM LLC",526 "5. Cunningham","Gas","Southwestern Public Service Co",480 "6. Escalante","Coal","Tri-State G & T Assn, Inc",247 "7. Rio Grande","Gas","El Paso Electric Co",236 "8. Afton Generating Station","Gas","Public Service Co of NM",236 "9. New Mexico Wind Energy Center","Other Renewables","FPL Energy New Mexico Wind LLC",204

312

Renewable Energy and Efficiency Modeling Analysis Partnership: An Analysis of How Different Energy Models Addressed a Common High Renewable Energy Penetration Scenario in 2025  

E-Print Network (OSTI)

capital, coal and natural gas fuel prices, and electricityFossil fuel prices – Natural Gas, Oil and Coal Technological

Blair, N.

2010-01-01T23:59:59.000Z

313

Natural Gas Vehicle and Infrastructure Codes and Standards Citations (Brochure), NREL (National Renewable Energy Laboratory)  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Natural Gas Vehicle and Infrastructure Codes and Standards Citations Natural Gas Vehicle and Infrastructure Codes and Standards Citations This document lists codes and standards typically used for U.S. natural gas vehicle and infrastructure projects. To determine which codes and standards apply to a specific project, identify the codes and standards currently in effect within the jurisdiction where the project will be located. Some jurisdictions also have unique ordinances or regulations that could apply. Learn about codes and standards basics at www.afdc.energy.gov/afdc/codes_standards_basics.html. Find natural gas vehicle and infrastructure codes and standards in these categories: * Fire Code Requirements * General CNG Requirements and Equipment Qualifications * CNG Engine Fuel Systems * CNG Compression, Gas Processing, Storage, and Dispensing Systems

314

Development of biological coal gasification (MicGAS process). Final report, May 1, 1990--May 31, 1995  

Science Conference Proceedings (OSTI)

ARCTECH has developed a novel process (MicGAS) for direct, anaerobic biomethanation of coals. Biomethanation potential of coals of different ranks (Anthracite, bitumious, sub-bitumious, and lignites of different types), by various microbial consortia, was investigated. Studies on biogasification of Texas Lignite (TxL) were conducted with a proprietary microbial consortium, Mic-1, isolated from hind guts of soil eating termites (Zootermopsis and Nasutitermes sp.) and further improved at ARCTECH. Various microbial populations of the Mic-1 consortium carry out the multi-step MicGAS Process. First, the primary coal degraders, or hydrolytic microbes, degrade the coal to high molecular weight (MW) compounds. Then acedogens ferment the high MW compounds to low MW volatile fatty acids. The volatile fatty acids are converted to acetate by acetogens, and the methanogens complete the biomethanation by converting acetate and CO{sub 2} to methane.

NONE

1998-12-31T23:59:59.000Z

315

Local Option - Building Permit Fee Waivers for Renewable Energy...  

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

permit fees. Class I renewable energy projects include energy derived from solar power, wind power, fuel cells (using renewable or non-renewable fuels), methane gas from...

316

Easing the natural gas crisis: Reducing natural gas prices through increased deployment of renewable energy and energy efficiency  

E-Print Network (OSTI)

increase in consumer electricity bills (if any) in the RPSChange in Consumer Electricity Bills Net Impact of RPS onon Natural Gas and Electricity Bills (2003-2020, 7% real

Wiser, Ryan; Bolinger, Mark; St. Clair, Matt

2004-01-01T23:59:59.000Z

317

Membrane Process to Capture CO{sub 2} from Coal-Fired Power Plant Flue Gas  

SciTech Connect

This final report describes work conducted for the U.S. Department of Energy National Energy Technology Laboratory (DOE NETL) on development of an efficient membrane process to capture carbon dioxide (CO{sub 2}) from power plant flue gas (award number DE-NT0005312). The primary goal of this research program was to demonstrate, in a field test, the ability of a membrane process to capture up to 90% of CO{sub 2} in coal-fired flue gas, and to evaluate the potential of a full-scale version of the process to perform this separation with less than a 35% increase in the levelized cost of electricity (LCOE). Membrane Technology and Research (MTR) conducted this project in collaboration with Arizona Public Services (APS), who hosted a membrane field test at their Cholla coal-fired power plant, and the Electric Power Research Institute (EPRI) and WorleyParsons (WP), who performed a comparative cost analysis of the proposed membrane CO{sub 2} capture process. The work conducted for this project included membrane and module development, slipstream testing of commercial-sized modules with natural gas and coal-fired flue gas, process design optimization, and a detailed systems and cost analysis of a membrane retrofit to a commercial power plant. The Polaris™ membrane developed over a number of years by MTR represents a step-change improvement in CO{sub 2} permeance compared to previous commercial CO{sub 2}-selective membranes. During this project, membrane optimization work resulted in a further doubling of the CO{sub 2} permeance of Polaris membrane while maintaining the CO{sub 2}/N{sub 2} selectivity. This is an important accomplishment because increased CO{sub 2} permeance directly impacts the membrane skid cost and footprint: a doubling of CO{sub 2} permeance halves the skid cost and footprint. In addition to providing high CO{sub 2} permeance, flue gas CO{sub 2} capture membranes must be stable in the presence of contaminants including SO{sub 2}. Laboratory tests showed no degradation in Polaris membrane performance during two months of continuous operation in a simulated flue gas environment containing up to 1,000 ppm SO{sub 2}. A successful slipstream field test at the APS Cholla power plant was conducted with commercialsize Polaris modules during this project. This field test is the first demonstration of stable performance by commercial-sized membrane modules treating actual coal-fired power plant flue gas. Process design studies show that selective recycle of CO{sub 2} using a countercurrent membrane module with air as a sweep stream can double the concentration of CO{sub 2} in coal flue gas with little energy input. This pre-concentration of CO{sub 2} by the sweep membrane reduces the minimum energy of CO{sub 2} separation in the capture unit by up to 40% for coal flue gas. Variations of this design may be even more promising for CO{sub 2} capture from NGCC flue gas, in which the CO{sub 2} concentration can be increased from 4% to 20% by selective sweep recycle. EPRI and WP conducted a systems and cost analysis of a base case MTR membrane CO{sub 2} capture system retrofitted to the AEP Conesville Unit 5 boiler. Some of the key findings from this study and a sensitivity analysis performed by MTR include: The MTR membrane process can capture 90% of the CO{sub 2} in coal flue gas and produce high-purity CO{sub 2} (>99%) ready for sequestration. CO{sub 2} recycle to the boiler appears feasible with minimal impact on boiler performance; however, further study by a boiler OEM is recommended. For a membrane process built today using a combination of slight feed compression, permeate vacuum, and current compression equipment costs, the membrane capture process can be competitive with the base case MEA process at 90% CO{sub 2} capture from a coal-fired power plant. The incremental LCOE for the base case membrane process is about equal to that of a base case MEA process, within the uncertainty in the analysis. With advanced membranes (5,000 gpu for CO{sub 2} and 50 for CO{sub 2}/N{sub 2}), operating with no feed compression and

Merkel, Tim; Wei, Xiaotong; Firat, Bilgen; He, Jenny; Amo, Karl; Pande, Saurabh; Baker, Richard; Wijmans, Hans; Bhown, Abhoyjit

2012-03-31T23:59:59.000Z

318

Full-scale and bench-scale testing of a coal-fueled gas turbine system  

SciTech Connect

Components for a coal-fueled industrial gas turbine were developed and tested at both benchscale and full-scale. The components included a two stage slagging combustor, a particulate rejection impact separator (PRIS), and a secondary particulate filter. The Integrated Bench Scale Test Facility (IBSTF) was used for the filter tests ana some of the PRIS testing. Full-scale combustor testing has been carried-out both with and without the PRIS. Bench-scale testing has included evaluating the feasibility of on-site CWM preparation, developing a water-cooled impactor and an extended run with new secondary candle filters.

Roberts, P.B.; LeCren, R.T.; Cowell, L.H.; Galica, M.A.; Stephenson, M.D.; Wen, C.S.

1992-01-01T23:59:59.000Z

319

Full-scale and bench-scale testing of a coal-fueled gas turbine system  

SciTech Connect

Components for a coal-fueled industrial gas turbine were developed and tested at both benchscale and full-scale. The components included a two stage slagging combustor, a particulate rejection impact separator (PRIS), and a secondary particulate filter. The Integrated Bench Scale Test Facility (IBSTF) was used for the filter tests ana some of the PRIS testing. Full-scale combustor testing has been carried-out both with and without the PRIS. Bench-scale testing has included evaluating the feasibility of on-site CWM preparation, developing a water-cooled impactor and an extended run with new secondary candle filters.

Roberts, P.B.; LeCren, R.T.; Cowell, L.H.; Galica, M.A.; Stephenson, M.D.; Wen, C.S.

1992-12-31T23:59:59.000Z

320

Sustainable Transportation Fuels from Natural Gas (H{sub 2}), Coal and Biomass  

SciTech Connect

This research program is focused primarily on the conversion of coal, natural gas (i.e., methane), and biomass to liquid fuels by Fischer-Tropsch synthesis (FTS), with minimum production of carbon dioxide. A complementary topic also under investigation is the development of novel processes for the production of hydrogen with very low to zero production of CO{sub 2}. This is in response to the nation?s urgent need for a secure and environmentally friendly domestic source of liquid fuels. The carbon neutrality of biomass is beneficial in meeting this goal. Several additional novel approaches to limiting carbon dioxide emissions are also being explored.

Huffman, Gerald

2012-12-31T23:59:59.000Z

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321

Advanced coal-fueled industrial cogeneration gas turbine system. Annual report, 2 June 1992--1 June 1993  

SciTech Connect

This program was initiated in June of 1986 because advances in coal-fueled gas turbine technology over the previous few years, together with DOE-METC sponsored studies, served to provide new optimism that the problems demonstrated in the past can be economically resolved and that the coal-fueled gas turbine could ultimately be the preferred system in appropriate market application sectors. In early 1991 it became evident that a combination of low natural gas prices, stringent emission limits of the Clean Air Act and concerns for CO{sub 2} emissions made the direct coal-fueled gas turbine less attractive. In late 1991 it was decided not to complete this program as planned. The objective of the Solar/METC program was to prove the technical, economic, and environmental feasibility of a coal-fired gas turbine for cogeneration applications through tests of a Centaur Type H engine system operated on coal fuel throughout the engine design operating range. Component development of the coal-fueled combustor island and cleanup system while not complete indicated that the planned engine test was feasible. Preliminary designs of the engine hardware and installation were partially completed. A successful conclusion to the program would have initiated a continuation of the commercialization plan through extended field demonstration runs. After notification of the intent not to complete the program a replan was carried out to finish the program in an orderly fashion within the framework of the contract. A contract modification added the first phase of the Advanced Turbine Study whose objective is to develop high efficiency, natural gas fueled gas turbine technology.

LeCren, L.T.; Cowell, L.H.; Galica, M.A.; Stephenson, M.D.; Wen, C.S.

1993-06-01T23:59:59.000Z

322

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

Science Conference Proceedings (OSTI)

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

323

Life-Cycle Assessment of Energy Use and Greenhouse Gas Emissions of Soybean-Derived Biodiesel and Renewable Fuels  

DOE Green Energy (OSTI)

In this study, we used Argonne National Laboratory's Greenhouse Gases, Regulated Emissions, and Energy Use in Transportation (GREET) model to assess the life-cycle energy and greenhouse gas (GHG) emission impacts of four soybean-derived fuels: biodiesel fuel produced via transesterification, two renewable diesel fuels (I and II) produced from different hydrogenation processes, and renewable gasoline produced from catalytic cracking. Five approaches were employed to allocate the coproducts: a displacement approach; two allocation approaches, one based on the energy value and the other based on the market value; and two hybrid approaches that integrated the displacement and allocation methods. The relative rankings of soybean-based fuels in terms of energy and environmental impacts were different under the different approaches, and the reasons were analyzed. Results from the five allocation approaches showed that although the production and combustion of soybean-based fuels might increase total energy use, they could have significant benefits in reducing fossil energy use (>52%), petroleum use (>88%), and GHG emissions (>57%) relative to petroleum fuels. This study emphasized the importance of the methods used to deal with coproduct issues and provided a comprehensive solution for conducting a life-cycle assessment of fuel pathways with multiple coproducts.

Huo, H.; Wang, M.; Bloyd, C.; Putsche, V.

2009-01-01T23:59:59.000Z

324

Putting downward pressure on natural gas prices: The impact of renewable energy and energy efficiency  

E-Print Network (OSTI)

wholesale and retail electricity rates, and will also reduceeffect of reducing electricity rates, but will also reduceGas and Electricity Bills (2003-2020, 5% real discount rate)

Wiser, Ryan; Bolinger, Mark; St. Clair, Matthew

2004-01-01T23:59:59.000Z

325

Putting downward pressure on natural gas prices: The impact of renewable energy and energy efficiency  

E-Print Network (OSTI)

increase in consumer electricity bills (if any) in the RPSon Natural Gas and Electricity Bills (2003-2020, 5% realChange in Consumer Electricity Bills Net Impact of RPS on

Wiser, Ryan; Bolinger, Mark; St. Clair, Matthew

2004-01-01T23:59:59.000Z

326

Can Deployment of Renewable Energy and Energy Efficiency Put Downward Pressure on Natural Gas Prices  

E-Print Network (OSTI)

increase in consumer electricity bills (if any) in the RPSon Natural Gas and Electricity Bills (2003-2020, 7% realChange in Consumer Electricity Bills Net Impact of RPS on

Wiser, Ryan; Bolinger, Mark

2005-01-01T23:59:59.000Z

327

Advanced coal-fueled gas turbine systems. Annual report, July 1991--June 1992  

DOE Green Energy (OSTI)

Westinghouse`s Advanced Coal-Fueled Gas Turbine System Program (DE-AC2l-86MC23167) was originally split into two major phases - a Basic Program and an Option. The Basic Program also contained two phases. The development of a 6 atm, 7 lb/s, 12 MMBtu/hr slagging combustor with an extended period of testing of the subscale combustor, was the first part of the Basic Program. In the second phase of the Basic Program, the combustor was to be operated over a 3-month period with a stationary cascade to study the effect of deposition, erosion and corrosion on combustion turbine components. The testing of the concept, in subscale, has demonstrated its ability to handle high- and low-sulfur bituminous coals, and low-sulfur subbituminous coal. Feeding the fuel in the form of PC has proven to be superior to CWM type feed. The program objectives relative to combustion efficiency, combustor exit temperature, NO{sub x} emissions, carbon burnout, and slag rejection have been met. Objectives for alkali, particulate, and SO{sub x} levels leaving the combustor were not met by the conclusion of testing at Textron. It is planned to continue this testing, to achieve all desired emission levels, as part of the W/NSP program to commercialize the slagging combustor technology.

Not Available

1992-09-01T23:59:59.000Z

328

Advanced Acid Gas Separation Technology for the Utilization of Low Rank Coals  

SciTech Connect

Air Products has developed a potentially ground-breaking technology – Sour Pressure Swing Adsorption (PSA) – to replace the solvent-based acid gas removal (AGR) systems currently employed to separate sulfur containing species, along with CO{sub 2} and other impurities, from gasifier syngas streams. The Sour PSA technology is based on adsorption processes that utilize pressure swing or temperature swing regeneration methods. Sour PSA technology has already been shown with higher rank coals to provide a significant reduction in the cost of CO{sub 2} capture for power generation, which should translate to a reduction in cost of electricity (COE), compared to baseline CO{sub 2} capture plant design. The objective of this project is to test the performance and capability of the adsorbents in handling tar and other impurities using a gaseous mixture generated from the gasification of lower rank, lignite coal. The results of this testing are used to generate a high-level pilot process design, and to prepare a techno-economic assessment evaluating the applicability of the technology to plants utilizing these coals.

Kloosterman, Jeff

2012-12-31T23:59:59.000Z

329

Accounting for fuel price risk: Using forward natural gas prices instead of gas price forecasts to compare renewable to natural gas-fired generation  

E-Print Network (OSTI)

natural gas combined-cycle and combustion turbine power plantsnatural gas combined-cycle and combustion turbine power plantsnatural gas has become the fuel of choice for new power plants

Bolinger, Mark; Wiser, Ryan; Golove, William

2003-01-01T23:59:59.000Z

330

Accounting for fuel price risk: Using forward natural gas prices instead of gas price forecasts to compare renewable to natural gas-fired generation  

E-Print Network (OSTI)

supply contracts and natural gas storage. As shown below insupply contracts and natural gas storage. As shown below inWe find that natural gas options and storage are not

Bolinger, Mark; Wiser, Ryan; Golove, William

2003-01-01T23:59:59.000Z

331

Accounting for fuel price risk: Using forward natural gas prices instead of gas price forecasts to compare renewable to natural gas-fired generation  

E-Print Network (OSTI)

Hedge Against Natural Gas Price Movements. ” http://Downward Pressure on Natural Gas Prices: The Impact ofTheis. 2001. “Which way the natural gas price: an attempt to

Bolinger, Mark; Wiser, Ryan; Golove, William

2003-01-01T23:59:59.000Z

332

Conventional Energy (Oil, Gas, and Coal) Forum & Associated Vertical Business Development Best Practices in Indian Country  

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

CONVENTIONAL ENERGY (OIL, GAS & COAL) FORUM & CONVENTIONAL ENERGY (OIL, GAS & COAL) FORUM & ASSOCIATED VERTICAL BUSINESS DEVELOPMENT BEST PRACTICES IN INDIAN COUNTRY March 1, 2012 MANDALAY BAY RESORT AND CASINO NORTH CONVENTION CENTER 3950 Las Vegas Blvd. South, Las Vegas, NV 89119 The dynamic world of conventional energy (focusing on oil, gas and coal energy) is a critical piece of the American energy portfolio. This strategic energy forum will focus on recent trends, existing successful partnerships, and perspectives on the future of conventional energy and how tribal business interests are evolving to meet the interests and needs of new tribal energy economies. The third of a series of planned DOE Office of Indian Energy-sponsored strategic energy development & investment forums, this forum will provide an opportunity for Tribal leaders, federal

333

Economic benefits of R and D on gas supply technologies. [Unconventioal natural gas resources which are tight sands, Devonian shale, coal seam gas, and gas co-produced with water  

SciTech Connect

Advanced natural gas supply technologies, if successful, could lower the average cost of gas to consumers by 18% and increase the expected gas demand by 2 quads/year by the year 2000. Advanced production techniques for unconventional gas will have by far the greatest impact on future gas prices, providing economic benefits of between $200 billion and $320 billion. Advanced SNG from coal will provide only a $9 billion benefit if unconventional gas meets all of its performance targets. However, higher demand and failure of unconventional gas R and D could raise the benefits of SNG research to $107 billion. SNG research provides a hedge value that increases the likelihood of receiving a positive payoff from gas supply R and D. Changing the performance goals for SNG research to emphasize cost reduction rather than acceleration of the date of commercialization would greatly increase the potential benefits of the program. 9 references, 8 figures, 5 tables.

Darrow, K.G.; Ashby, A.B.; Nesbitt, D.M.; Marshalla, R.A.

1985-01-01T23:59:59.000Z

334

Enhancing the Use of Coals by Gas Reburning - Sorbent Injection Volume 5 - Guideline Manual  

Science Conference Proceedings (OSTI)

The purpose of the Guideline Manual is to provide recommendations for the application of combined gas reburning-sorbent injection (GR-SI) technologies to pre-NSPS boilers. The manual includes design recommendations, performance predictions, economic projections and comparisons with competing technologies. The report also includes an assessment of boiler impacts. Two full-scale demonstrations of gas reburning-sorbent injection form the basis of the Guideline Manual. Under the U.S. Department of Energy's Clean Coal Technology Program (Round 1), a project was completed to demonstrate control of boiler emissions that comprise acid rain precursors, specifically oxides of nitrogen (NOX) and sulfur dioxide (S02). Other project sponsors were the Gas Research Institute and the Illinois State Department of Commerce and Community Affairs. The project involved d,emonstrating the combined use of Gas Reburning and Sorbent Injection (GR-SI) to assess the air emissions reduction potential of these technologies.. Three potential coal-fired utility boiler host sites were evaluated: Illinois Power's tangentially-fired 71 MWe (net) Hennepin Unit #1, City Water Light and Power's cyclone- fired 33 MWe (gross) Lakeside Unit #7, and Central Illinois Light Company's wall-fired 117 MWe (net) Edwards Unit #1. Commercial demonstrations were completed on the Hennepin and Lakeside Units. The Edwards Unit was removed from consideration for a site demonstration due to retrofit cost considerations. Gas Reburning (GR) controls air emissions of NOX. Natural gas is introduced into the furnace hot flue gas creating a reducing reburning zone to convert NOX to diatomic nitrogen (N,). Overfire air is injected into the furnace above the reburning zone to complete the combustion of the reducing (fuel) gases created in the reburning zone. Sorbent Injection (S1) consists of the injection of dry, calcium-based sorbents into furnace hot flue gas to achieve S02 capture. `At each site where the technologies were to be demonstrated, performance goals were set to achieve air emission reductions of 60 percent for NOX and 50 percent for S02. These performance goals were exceeded during long term demonstration testing. For the tangentially fired unit, NO, emissions were reduced by 67.2?40 and SOZ emissions by 52.6Y0. For the cyclone-fired unit, NO, emissions were reduced by 62.9% and SOZ emissions by 57.9Y0.

None

1998-06-01T23:59:59.000Z

335

Enahancing the Use of Coals by Gas Reburning - Sorbent Injection Volume 5 - Guideline Manual  

Science Conference Proceedings (OSTI)

The purpose of the Guideline Manual is to provide recommendations for the application of combined gas reburning-sorbent injection (GR-SI) technologies to pre-NSPS boilers. The manual includes design recommendations, performance predictions, economic projections and comparisons with competing technologies. The report also includes an assessment of boiler impacts. Two full-scale demonstrations of gas reburning-sorbent injection form the basis of the Guideline Manual. Under the U.S. Department of Energy's Clean Coal Technology Program (Round 1), a project was completed to demonstrate control of boiler emissions that comprise acid rain precursors, specifically oxides of nitrogen (NOX) and sulfur dioxide (S02). Other project sponsors were the Gas Research Institute and the Illinois State Department of Commerce and Community Affairs. The project involved demonstrating the combined use of Gas Reburning and Sorbent Injection (GR-SI) to assess the air emissions reduction potential of these technologies.. Three potential coal-fired utility boiler host sites were evaluated: Illinois Power's tangentially-fired 71 MWe (net) Hennepin Unit W, City Water Light and Power's cyclone- fired 33 MWe (gross) Lakeside Unit #7, and Central Illinois Light Company's wall-fired 117 MWe (net) Edwards Unit #1. Commercial demonstrations were completed on the Hennepin and Lakeside Units. The Edwards Unit was removed from consideration for a site demonstration due to retrofit cost considerations. Gas Reburning (GR) controls air emissions of NOX. Natural gas is introduced into the furnace hot flue gas creating a reducing reburning zone to convert NOX to diatomic nitrogen (N,). Overfire air is injected into the furnace above the reburning zone to complete the combustion of the reducing (fuel) gases created in the reburning zone. Sorbent Injection (S1) consists of the injection of dry, calcium-based sorbents into furnace hot flue gas to achieve S02 capture. At each site where the techno!o@es were to be demonstrated, petiormance goals were set to achieve air emission reductions of 60 percent for NO. and 50 percent for SO2. These performance goals were exceeded during long term demonstration testing. For the tangentially fired unit, NOX emissions were reduced by 67.2% and S02 emissions by 52.6%. For the cyclone-fired unit, NOX emissions were reduced by 62.9% and SOZ emissions by 57.9%.

None

1998-09-01T23:59:59.000Z

336

Renewable Energy Trends 2003 - Energy Information Administration  

U.S. Energy Information Administration (EIA)

DOE/EIA Renewable Energy Trends 2003 With Preliminary Data For 2003 July 2004 Energy Information Administration Office of Coal, Nuclear, Electric and Alternate Fuels

337

Environmental performance of air staged combustor with flue gas recirculation to burn coal/biomass  

DOE Green Energy (OSTI)

The environmental and thermal performance of a 1.07 m diameter, 440 kW atmospheric fluidized bed combustor operated at 700{degrees}C-920{degrees}C and burning coal was studied. Flue gas recirculation was incorporated to enhance the thermal performance and air staging was used to control emissions of SO{sub 2}, CO, NO{sub x} and N{sub 2}O. Studies focused on the effect of excess air, firing rate, and use of sorbent on system performance. The recirculation-staging mode with limestone had the highest thermal efficiency (0.67) using the firing equation. Emission data showed that flue gas recirculation (ratio of 0.7) significantly reduced NO{sub x} emissions; and that use of limestone sorbent at a Ca/S ratio of 3 reduced SO{sub 2} emissions by 64% to approximately 0.310 g/MJ.

Anuar, S.H.; Keener, H.M.

1995-12-31T23:59:59.000Z

338

Renewables Portfolio Standard (Connecticut) | Open Energy Information  

Open Energy Info (EERE)

Wave Energy, Wind, Natural Gas, Low E Renewables Active Incentive Yes Implementing Sector StateTerritory Energy Category Energy Efficiency Incentive Programs, Renewable Energy...

339

Nepal: Applications of Renewable Energy Technologies  

Open Energy Info (EERE)

Renewable Energy Technologies (Abstract):  Wind, biomass, bio-gas, photovoltaic and small hydro renewable energy technologies in Nepal

(Purpose):<...

340

Coal-type gas provinces in China and their geochemical characteristics  

SciTech Connect

The distribution of coal - type gases in China can be divided into the east gas province, the central gas province and the west gas province the east gas province lies in the East China Meso - Cenozoic Rift Belt, including Donghai Basin and Bohaiwan Basin. The ages of gas source rocks are Carbo - Permian and Tertiary. The types of gas reservoirs are a anticline or a hidden mountain - fault block combination reservoir. The CH[sub 4] content ofthe gases there is 83 -90%, with [delta][sup 13]C[sub 1] -35.5 [approximately] -39.9[per thousand], and [delta][sup 13]C[sub 2] -24.0 [approximately] -26.8[per thousand]. The [delta][sup 13]C of condensate oils associated with the gases ranges from -25.4[per thousand] to -26.8[per thousand]. The central gas province is inside the Central China Paleozoic Plates, including Orclos Basin and Sichuan Basin. The gas source rocks are Carbo - Permian and Triassic. The types of gas reservoirs are an anticline-fault combination or a lithological-tectonic combination reservoir. The [delta][sup 13]C[sub 1] of the gases there is -37.9 [approximately] -37. l[per thousand], with the [delta][sup 13]C of condensate oil accompanying them - 25.1 [approximately] -26.6[per thousand]. The west gas province is within the West China Late Paleozoic Intracontinental Compressive Belt, including Tarim Basin, Jungar Basin and Tuna Basin. The age of gas source rocks is Jurassic. The types of gas reservoirs are an anticline or an anticline-fault reservoir. The CH[sub 4] content of the gases there varies from 60 to 90%, with [delta][sup 13]C[sub 1] from - 38.7 to -43.7[per thousand] and [delta] [sup 13]C[sub 2] from -25.9[per thousand] to -29.9[per thousand]. The [delta] [sup 13]C of light oils and condensate oils accompanying the gases changes from 24.3[per thousand] to 27.8[per thousand].

Zhang Xiaobao; Xu Yonghang; Shen Ping (Lanzhou Institute of Geology, Ianzhou (China))

1996-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "gas coal renewables" 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.


341

Combustion of ultrafine coal/water mixtures and their application in gas turbines: Final report  

Science Conference Proceedings (OSTI)

The feasibility of using coal-water fuels (CWF) in gas turbine combustors has been demonstrated in recent pilot plant experiments. The demands of burning coal-water fuels with high flame stability, complete combustion, low NO/sub x/ emission and a resulting fly ash particle size that will not erode turbine blades represent a significant challenge to combustion scientists and engineers. The satisfactory solution of these problems requires that the variation of the structure of CWF flames, i.e., the fields of flow, temperature and chemical species concentration in the flame, with operating conditions is known. Detailed in-flame measurements are difficult at elevated pressures and it has been proposed to carry out such experiments at atmospheric pressure and interpret the data by means of models for gas turbine combustor conditions. The research was carried out in five sequential tasks: cold flow studies; studies of conventional fine-grind CWF; combustion studies with ultrafine CWF fuel; reduction of NO/sub x/ emission by staged combustion; and data interpretation-ignition and radiation aspects. 37 refs., 61 figs., 9 tabs.

Toqan, M.A.; Srinivasachar, S.; Staudt, J.; Varela, F.; Beer, J.M.

1987-10-01T23:59:59.000Z

342

A Perspective of petroleum, natural gas, and coal bed methane on the energy security of India  

Science Conference Proceedings (OSTI)

The global energy requirement has grown at a phenomenal rate and the consumption of primary energy sources has been a very high positive growth. This article focuses on the consumption of different primary energy sources and it identifies that coal will continue to remain as the prime energy in the foreseeable future. It examines energy requirement perspectives for India and demands of petroleum, natural gas, and coal bed methane in the foreseeable future. It discusses the state of present day petroleum and petrochemical industries in the country and the latest advances in them to take over in the next few years. The regional pattern of consumption of primary energy sources shows that oil remains as the largest single source of primary energy in most parts of the world. However, gas dominates as the prime source in some parts of the world. Economic development and poverty alleviation depend on securing affordable energy sources and for the country's energy security; it is necessary to adopt the latest technological advances in petroleum and petrochemical industries by supportive government policies. But such energy is very much concerned with environmental degradation and must be driven by contemporary managerial acumen addressing environmental and social challenges effectively. Environmental laws for the abatement of environmental degradation are discussed in this paper. The paper concludes that energy security leading to energy independence is certainly possible and can be achieved through a planned manner.

Ghose, M.K.; Paul, B. [Indian School of Mines University, Dhanbad (India)

2008-07-01T23:59:59.000Z

343

Post-test analysis of 20kW molten carbonate fuel cell stack operated on coal gas. Final report, August 1993--February 1996  

DOE Green Energy (OSTI)

A 20kW carbonate fuel cell stack was operated with coal gas for the first time in the world. The stack was tested for a total of 4,000 hours, of which 3,900 hours of testing was conducted at the Louisiana Gasification Technology Incorporated, Plaquemine, Louisiana outdoor site. The operation was on either natural gas or coal gas and switched several times without any effects, demonstrating duel fuel capabilities. This test was conducted with 9142 kJ/m{sup 3} (245 Btu/cft) coal gas provided by a slipstream from Destec`s entrained flow, slagging, slurry-fed gasifier equipped with a cold gas cleanup subsystem. The stack generated up to 21 kW with this coal gas. Following completion of this test, the stack was brought to Energy Research Corporation (ERC) and a detailed post-test analysis was conducted to identify any effects of coal gas on cell components. This investigation has shown that the direct fuel cell (DFC) can be operated with properly cleaned and humidified coal-as, providing stable performance. The basic C direct fuel cell component materials are stable and display normal stability in presence of the coal gas. No effects of the coal-borne contaminants are apparent. Further cell testing at ERC 1 17, confirmed these findings.

NONE

1996-05-01T23:59:59.000Z

344

Apples with apples: accounting for fuel price risk in comparisons of gas-fired and renewable generation  

E-Print Network (OSTI)

gas supply contracts and natural gas storage. As is shown inor Storage Cost Gas Price Falls Gas Price Rises Natural Gas

Bolinger, Mark; Wiser, Ryan

2003-01-01T23:59:59.000Z

345

Gas Permeability of Fractured Sandstone/Coal Samples under Variable Confining Pressure  

E-Print Network (OSTI)

of Fractured Sandstone/Coal Samples Smeulders, D.M.J. ,stress on permeability of coal. Int. J. Rock Mech. Min. Sci.of Fractured Sandstone/Coal Samples under Variable Con?ning

Liu, Weiqun; Li, Yushou; Wang, Bo

2010-01-01T23:59:59.000Z

346

Federal Energy Management Program: Use Renewable Energy in Buildings...  

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

Use Renewable Energy in Buildings for Greenhouse Gas Mitigation to someone by E-mail Share Federal Energy Management Program: Use Renewable Energy in Buildings for Greenhouse Gas...

347

Renewable Energy  

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

Renewable Energy Renewable Energy1354608000000Renewable EnergySome of these resources are LANL-only and will require Remote Access.No Renewable Energy Some of these resources are...

348

Flue Gas Cleanup at Temperatures about 1400 C for a Coal Fired Combined Cycle Power Plant: State and Perspectives in the Pressurized Pulverized Coal Combustion (PPCC) Project  

Science Conference Proceedings (OSTI)

The PPCC technology, a combined cycle, requires comprehensive cleaning of the flue gases because coal contains a large variety of minerals and other substances. This would lead to fast destruction of the gas turbine blades due to erosion and corrosion. The present specifications of the turbine manufacturers for the required flue gas quality are at a maximum particulate content of 5 mg/m3 s.t.p., diameter of Kraftwerke GmbH, SaarEnergie GmbH, Siemens AG, and Steag AG.

Foerster, M.E.C.; Oeking, K.; Hannes, K.

2002-09-18T23:59:59.000Z

349

Accounting for fuel price risk: Using forward natural gas prices instead of gas price forecasts to compare renewable to natural gas-fired generation  

E-Print Network (OSTI)

and Policy Options of California’s Reliance on Natural Gas. ”policy is often formulated with ratepayers in mind. 2) Second, long-term fixed-price natural gas

Bolinger, Mark; Wiser, Ryan; Golove, William

2003-01-01T23:59:59.000Z

350

Air extraction and LBTU coal gas combustion in gas turbines for IGCC systems  

SciTech Connect

The primary objective of the cold flow experiments is to study the effects of air extraction from two sites in a heavy-frame gas turbine: (1) the engine wrapper or manholes and (2) the compressor/combustor prediffuser inlet. The experiments involve a scale model of components of a state-of-the-art, US made gas turbine between the compressor exit and the turbine inlet Specifically, the purpose is to observe and measure how air extraction affects the flow distribution around the combustor cans and the impingement cooling flow rates on transition pieces of the combustor. The experimental data should provide turbine manufacturers the information needed to determine their preferred air extraction site. The secondary objectives for the experiments are as follows: (1) to identify regions with high-pressure losses, (2) to develop a dam base which will validate computational fluid dynamic calculations, and (3) to establish an experimental facility which may be used to assist the US industry in improving the aerodynamic design of nonrotating components of a heavy-frame gas turbine.

Yang, Tah-teh; Agrawal, A.K.; Kapat, J.S.

1992-01-01T23:59:59.000Z

351

Accounting for fuel price risk: Using forward natural gas prices instead of gas price forecasts to compare renewable to natural gas-fired generation  

E-Print Network (OSTI)

history nevertheless does not lend ready support to the view that the EIA’s reference case natural gas

Bolinger, Mark; Wiser, Ryan; Golove, William

2003-01-01T23:59:59.000Z

352

Delineation of Coal Tar Dense Nonaqueous Phase Liquid and Groundwater Plumes at a Former Manufactured Gas Plant Site  

Science Conference Proceedings (OSTI)

This report presents the results of a field investigation at a former manufactured gas plant (MGP) site in the Midwest. The focus of the investigation was delineating the distribution of coal tar (a dense nonaqueous phase liquid) and the associated dissolved-phase constituents in groundwater using a combination of analysis methodologies. The results will be used to determine remediation needs at the site.

1998-12-30T23:59:59.000Z

353

Enhancing the use of coals by gas reburning-sorbent injection: Volume 3 -- Gas reburning-sorbent injection at Edwards Unit 1, Central Illinois Light Company. Final report  

Science Conference Proceedings (OSTI)

Design work has been completed for a Gas Reburning-Sorbent Injection (GR-SI) system to reduce emissions of NO{sub x} and SO{sub 2} from a wall fired unit at Central Illinois Light Company`s Edwards Station Unit 1, located in Bartonville, Illinois. The goal of the project was to reduce emissions of NO{sub x} by 60%, from the as found baseline of 0.98 lb/MBtu and to reduce emissions of SO{sub 2} by 50%. Since the unit currently fires a blend of high sulfur Illinois coal and low sulfur Kentucky coal to meet an SO{sub 2} limit of 1.8 lb/MBtu, the goal at this site was amended to meeting this limit while increasing the fraction of high sulfur coal to 57% from the current 15% level. GR-SI requires injection of natural gas into the furnace at the level of the top burner row, creating a fuel-rich zone in which NO{sub x} formed in the coal zone is reduced to N{sub 2}. Recycled flue gas is used to increase the reburning fuel jet momentum, resulting in enhanced mixing. Recycled flue gas is also used to cool the top row of burners which would not be in service during GR operation. Dry hydrated lime sorbent is injected into the upper furnace to react with SO{sub 2}, forming solid CaSO{sub 4} and CaSO{sub 3}, which are collected by the ESP. The system was designed to inject sorbent at a rate corresponding to a calcium (sorbent) to sulfur (coal) molar ratio of 2.0. The SI system design was optimized with respect to gas temperature, injection air flow rate, and sorbent dispersion. Sorbent injection air flow is equal to 3% of the combustion air. The design includes modifications of the ESP, sootblowing, and ash handling systems.

NONE

1996-03-01T23:59:59.000Z

354

Regenerable Sorbent Development for Sulfur, Chloride and Ammonia Removal from Coal-Derived Synthesis Gas  

DOE Green Energy (OSTI)

A large number of components in coal form corrosive and toxic compounds during coal gasification processes. DOE’s NETL aims to reduce contaminants to parts per billion in order to utilize gasification gas streams in fuel cell applications. Even more stringent requirements are expected if the fuel is to be utilized in chemical production applications. Regenerable hydrogen sulfide removal sorbents have been developed at NETL. These sorbents can remove the hydrogen sulfide to ppb range at 316 °C and at 20 atmospheres. The sorbent can be regenerated with oxygen. Reactivity and physical durability of the sorbent did not change during the multi-cycle tests. The sorbent development work has been extended to include the removal of other major impurities, such as HCl and NH3. The sorbents for HCl removal that are available today are not regenerable. Regenerable HCl removal sorbents have been developed at NETL. These sorbents can remove HCl to ppb range at 300 °C to 500 °C. The sorbent can be regenerated with oxygen. Results of TGA and bench-scale flow reactor tests with both regenerable and non-regenerable HCl removal sorbents will be discussed in the paper. Bench-scale reactor tests were also conducted with NH3 removal sorbents. The results indicated that the sorbents have a high removal capacity and good regenerability during the multi-cycle tests. Future emphasis of the NETL coal gasification/cleanup program is to develop multi-functional sorbents to remove multiple impurities in order to minimize the steps involved in the cleanup systems. To accomplish this goal, a regenerable sorbent capable of removing both HCl and H2S was developed. The results of the TGA conducted with the sorbent to evaluate the feasibility of both H2S and HCl sorption will be discussed in this paper.

Siriwardane, R.V.; Tian, H.; Simonyi, T.; Webster, T.

2007-08-01T23:59:59.000Z

355

Quantifying the value that energy efficiency and renewable energy provide as a hedge against volatile natural gas prices  

E-Print Network (OSTI)

Gas Pricing by Regulated Natural Gas Utilities, Docket No.a Hedge Against Volatile Natural Gas Prices Mark Bolinger,wake of unprecedented natural gas price volatility during

Bolinger, Mark; Wiser, Ryan; Bachrach, Devra; Golove, William

2002-01-01T23:59:59.000Z

356

Energy and environmental research emphasizing low-rank coal -- Task 3.10, Gas separation and hot-gas cleanup  

DOE Green Energy (OSTI)

Catalytic gasification of coal to produce H{sub 2}-, CO-, and CH{sub 4}-rich mixtures of gases for consumption in molten carbonate fuel cells is currently under development; however, to optimize the fuel cell performance and extend its operating life, it is desired to separate as much of the inert components (i.e., CO{sub 2} and N{sub 2}) and impurities (i.e., H{sub 2}S and NH{sub 3}) as possible from the fuel gas before it enters the fuel cell. In addition, the economics of the integrated gasification combined cycle (IGCC) can be improved by separating as much of the hydrogen as possible from the fuel, since hydrogen is a high-value product. Researchers at the Energy and Environmental Research Center (EERC) and Bend Research, Inc., investigated pressure-driven membranes as a method for accomplishing this gas separation and hot-gas cleanup. These membranes are operated at temperatures as high as 800 C and at pressures up to 300 psig. They have very small pore sizes that separate the undesirable gases by operating in the Knudsen diffusion region of mass transport or in the molecular sieving region of mass transport phenomena. In addition, H{sub 2} separation through a palladium metal membrane proceeds via a solution-diffusion mechanism for atomic hydrogen. This allows the membranes to exhibit extremely high selectivity for hydrogen separation. Specific questions to be answered in this project include: what are the effects of membrane properties (i.e., surface area, pore size, and coating thickness) on permeability and selectivity of the desired gases; what are the effects of operating conditions (i.e., temperature, pressure, and flow rate) on permeability and selectivity; what are the effects of impurities (i.e., small particulate, H{sub 2}S, HCl, NH{sub 3}, etc.) on membrane performance?

Swanson, M.L.

1995-08-01T23:59:59.000Z

357

Heat removal from high temperature tubular solid oxide fuel cells utilizing product gas from coal gasifiers.  

DOE Green Energy (OSTI)

In this work we describe the results of a computer study used to investigate the practicality of several heat exchanger configurations that could be used to extract heat from tubular solid oxide fuel cells (SOFCs) . Two SOFC feed gas compositions were used in this study. They represent product gases from two different coal gasifier designs from the Zero Emission Coal study at Los Alamos National Laboratory . Both plant designs rely on the efficient use of the heat produced by the SOFCs . Both feed streams are relatively rich in hydrogen with a very small hydrocarbon content . One feed stream has a significant carbon monoxide content with a bit less hydrogen . Since neither stream has a significant hydrocarbon content, the common use of the endothermic reforming reaction to reduce the process heat is not possible for these feed streams . The process, the method, the computer code, and the results are presented as well as a discussion of the pros and cons of each configuration for each process .

Parkinson, W. J. (William Jerry),

2003-01-01T23:59:59.000Z

358

U.S. Coal Reserves  

U.S. Energy Information Administration (EIA) Indexed Site

Data - U.S. Energy Information Administration (EIA) Data - U.S. Energy Information Administration (EIA) U.S. Energy Information Administration - EIA - Independent Statistics and Analysis Sources & Uses Petroleum & Other Liquids Crude oil, gasoline, heating oil, diesel, propane, and other liquids including biofuels and natural gas liquids. Natural Gas Exploration and reserves, storage, imports and exports, production, prices, sales. Electricity Sales, revenue and prices, power plants, fuel use, stocks, generation, trade, demand & emissions. Consumption & Efficiency Energy use in homes, commercial buildings, manufacturing, and transportation. Coal Reserves, production, prices, employ- ment and productivity, distribution, stocks, imports and exports. Renewable & Alternative Fuels Includes hydropower, solar, wind, geothermal, biomass and ethanol.

359

Sorbents for High Temperature Removal of Arsenic from Coal-Derived Synthesis Gas  

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

Gokhan O. Alptekin, PhD Robert Copeland, PhD Gokhan O. Alptekin, PhD Robert Copeland, PhD (Primary Contact) TDA Research, Inc TDA Research, Inc 12345 W. 52 nd Avenue 12345 W. 52 nd Avenue Wheat Ridge, CO 80033 Wheat Ridge, CO 80033 Email: copeland@tda.com Email: galptekin@tda.com Tel: (303) 940-2323 Tel: (303) 940-2349 Fax: (303) 422-7763 Fax: (303) 422-7763 Margarita Dubovik Yevgenia Gershanovich TDA Research, Inc TDA Research, Inc 12345 W. 52 nd Avenue 12345 W. 52 nd Avenue Wheat Ridge, CO 80033 Wheat Ridge, CO 80033 Email: dubovik@tda.com Email: ygershan@tda.com Tel: (303) 940-2316 Tel: (303) 940-2346 Fax: (303) 422-7763 Fax: (303) 422-7763 Sorbents for High Temperature Removal of Arsenic from Coal-Derived Synthesis Gas

360

Enhancing the Use of Coals by Gas Reburning-Sorbent Injection  

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

0 0 Enhancing the Use of Coals by Gas Reburning-Sorbent Injection A DOE Assessment January 2001 U.S. Department of Energy National Energy Technology Laboratory P.O. Box 880, 3610 Collins Ferry Road Morgantown, WV 26507-0880 and P.O. Box 10940, 626 Cochrans Mill Road Pittsburgh, PA 15236-0940 website: www.netl.doe.gov 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

Note: This page contains sample records for the topic "gas coal renewables" 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

Durable regenerable sorbent pellets for removal of hydrogen sulfide from coal gas  

DOE Patents (OSTI)

Pellets for removing hydrogen sulfide from a coal gasification stream at an elevated temperature are presented in durable form, usable over repeated cycles of absorption and regeneration. The pellets include a material reactive with hydrogen sulfide, in particular zinc oxide, a binder, and an inert material, in particular calcium sulfate (Drierite), having a particle size substantially larger than other components of the pellets. A second inert material and a promoter may also be included. Preparation of the pellets may be carried out by dry, solid-state mixing of components, moistening the mixture, and agglomerating it into pellets, followed by drying and calcining. Pellet size is selected, depending on the type of reaction bed for which the pellets are intended. The use of inert material with a large particle size provides a stable pellet structure with increased porosity, enabling effective gas contact and prolonged mechanical durability.

Siriwardane, R.V.

1995-12-31T23:59:59.000Z

362

Durable regenerable sorbent pellets for removal of hydrogen sulfide from coal gas  

DOE Patents (OSTI)

Pellets for removing hydrogen sulfide from a coal gasification stream at an elevated temperature are prepared in durable form usable over repeated cycles of absorption and regeneration. The pellets include a material reactive with hydrogen sulfide, in particular zinc oxide, a binder, and an inert material, in particular calcium sulfate (drierite), having a particle size substantially larger than other components of the pellets. A second inert material and a promoter may also be included. Preparation of the pellets may be carried out by dry, solid-state mixing of components, moistening the mixture, and agglomerating it into pellets, followed by drying and calcining. Pellet size is selected, depending on the type of reaction bed for which the pellets are intended. The use of inert material with a large particle size provides a stable pellet structure with increased porosity, enabling effective gas contact and prolonged mechanical durability.

Siriwardane, Ranjani V. (Morgantown, WV)

1997-01-01T23:59:59.000Z

363

Durable regenerable sorbent pellets for removal of hydrogen sulfide coal gas  

DOE Patents (OSTI)

Pellets for removing hydrogen sulfide from a coal gasification stream at an elevated temperature are prepared in durable form, usable over repeated cycles of absorption and regeneration. The pellets include a material reactive with hydrogen sulfide, in particular zinc oxide, a binder, and an inert material, in particular calcium sulfate (drierite), having a particle size substantially larger than other components of the pellets. A second inert material and a promoter may also be included. Preparation of the pellets may be carried out by dry, solid-state mixing of components, moistening the mixture, and agglomerating it into pellets, followed by drying and calcining. Pellet size is selected, depending on the type of reaction bed for which the pellets are intended. The use of inert material with a large particle size provides a stable pellet structure with increased porosity, enabling effective gas contact and prolonged mechanical durability.

Siriwardane, Ranjani V. (Morgantown, WV)

1999-01-01T23:59:59.000Z

364

The economical production of alcohol fuels from coal-derived synthesis gas: Case studies, design, and economics  

DOE Green Energy (OSTI)

This project is a combination of process simulation and catalyst development aimed at identifying the most economical method for converting coal to syngas to linear higher alcohols to be used as oxygenated fuel additives. There are two tasks. The goal of Task 1 is to discover, study, and evaluate novel heterogeneous catalytic systems for the production of oxygenated fuel enhancers from synthesis gas, and to explore, analytically and on the bench scale, novel reactor and process concepts for use in converting syngas to liquid fuel products. The goal of Task 2 is to simulate, by computer, energy efficient and economically efficient processes for converting coal to energy (fuel alcohols and/or power). The primary focus is to convert syngas to fuel alcohols. This report contains results from Task 2. The first step for Task 2 was to develop computer simulations of alternative coal to syngas to linear higher alcohol processes, to evaluate and compare the economics and energy efficiency of these alternative processes, and to make a preliminary determination as to the most attractive process configuration. A benefit of this approach is that simulations will be debugged and available for use when Task 1 results are available. Seven cases were developed using different gasifier technologies, different methods for altering the H{sub 2}/CO ratio of the syngas to the desired 1.1/1, and with the higher alcohol fuel additives as primary products and as by-products of a power generation facility. Texaco, Shell, and Lurgi gasifier designs were used to test gasifying coal. Steam reforming of natural gas, sour gas shift conversion, or pressure swing adsorption were used to alter the H{sub 2}/CO ratio of the syngas. In addition, a case using only natural gas was prepared to compare coal and natural gas as a source of syngas.

NONE

1995-10-01T23:59:59.000Z

365

Accounting for fuel price risk: Using forward natural gas prices instead of gas price forecasts to compare renewable to natural gas-fired generation  

E-Print Network (OSTI)

solar, and hydro power are often sold on a fixed-pricesolar, and hydro power, which by their nature are immune to natural gas fuel price

Bolinger, Mark; Wiser, Ryan; Golove, William

2003-01-01T23:59:59.000Z

366

Quantifying the value that energy efficiency and renewable energy provide as a hedge against volatile natural gas prices  

E-Print Network (OSTI)

supply contracts and natural gas storage. Lacking sufficientsupply contracts and natural gas storage facilities. Since,

Bolinger, Mark; Wiser, Ryan; Bachrach, Devra; Golove, William

2002-01-01T23:59:59.000Z

367

DEVELOPMENT OF NOVEL CERAMIC NANOFILM-FIBER INTEGRATED OPTICAL SENSORS FOR RAPID DETECTION OF COAL DERIVED SYNTHESIS GAS  

DOE Green Energy (OSTI)

The overall goal of this project is to conduct fundamental studies on advanced ceramic materials and fiber optic devices for developing new types of high temperature (>500{degree}C) fiber optic chemical sensors (FOCS) for monitoring fossil (mainly coal) and biomass derived gases in power plants. The primary technical objective is to investigate and demonstrate the nanocrystalline doped-ceramic thin film enabled FOCS that possess desired stability, sensitivity and selectivity for in-situ, rapid gas detection in the syngas streams from gasification and combustion flue gases. This report summarizes research works of two integrated parts: (1) development of metal oxide solid thin films as sensing materials for detection and measurement of important gas components relevant to the coal- and biomass-derived syngas and combustion gas streams at high temperatures; and (2) development of fiber optic devices that are potentially useful for constructing FOCS in combination with the solid oxide thin films identified in this program.

Junhang Dong; Hai Xiao; Xiling Tang; Hongmin Jiang; Kurtis Remmel; Amardeep Kaur

2012-09-30T23:59:59.000Z

368

Power plants with topping gas turbines and coal gasification planning of new plants and upgrading of existing plants  

Science Conference Proceedings (OSTI)

This paper reports on existing and new power plants improved environmentally and economically by integrating gas turbines in the plant process. The rate of additional firing has an influence on the overall plant efficiency. The influence of the additional firing of natural gas-fired power plants is compared to that of power plants with integrated coal gasification. The differences are explained. The result of the examination lead to recommendations for the design of new plants and for upgrading of existing plants. The advantages of topping gas turbines are shown by examples of new power plants and upgraded plants.

Schoedel, J.; Mertens, K. (ABB Kraftwerke AG, Mannheim (DE))

1990-01-01T23:59:59.000Z

369

"2. Craig","Coal","Tri-State G & T Assn, Inc",1304 "3. Fort St Vrain","Gas","Public Service Co of Colorado",969  

U.S. Energy Information Administration (EIA) Indexed Site

Colorado" Colorado" "1. Comanche","Coal","Public Service Co of Colorado",1426 "2. Craig","Coal","Tri-State G & T Assn, Inc",1304 "3. Fort St Vrain","Gas","Public Service Co of Colorado",969 "4. Cherokee","Coal","Public Service Co of Colorado",717 "5. Rawhide","Coal","Platte River Power Authority",666 "6. Rocky Mountain Energy Center","Gas","Rocky Mountain Energy Ctr LLC",601 "7. Pawnee","Coal","Public Service Co of Colorado",505 "8. Front Range Power Project","Gas","Colorado Springs City of",462 "9. Hayden","Coal","Public Service Co of Colorado",446

370

Waste-to-wheel analysis of anaerobic-digestion-based renewable natural gas pathways with the GREET model.  

SciTech Connect

In 2009, manure management accounted for 2,356 Gg or 107 billion standard cubic ft of methane (CH{sub 4}) emissions in the United States, equivalent to 0.5% of U.S. natural gas (NG) consumption. Owing to the high global warming potential of methane, capturing and utilizing this methane source could reduce greenhouse gas (GHG) emissions. The extent of that reduction depends on several factors - most notably, how much of this manure-based methane can be captured, how much GHG is produced in the course of converting it to vehicular fuel, and how much GHG was produced by the fossil fuel it might displace. A life-cycle analysis was conducted to quantify these factors and, in so doing, assess the impact of converting methane from animal manure into renewable NG (RNG) and utilizing the gas in vehicles. Several manure-based RNG pathways were characterized in the GREET (Greenhouse gases, Regulated Emissions, and Energy use in Transportation) model, and their fuel-cycle energy use and GHG emissions were compared to petroleum-based pathways as well as to conventional fossil NG pathways. Results show that despite increased total energy use, both fossil fuel use and GHG emissions decline for most RNG pathways as compared with fossil NG and petroleum. However, GHG emissions for RNG pathways are highly dependent on the specifics of the reference case, as well as on the process energy emissions and methane conversion factors assumed for the RNG pathways. The most critical factors are the share of flared controllable CH{sub 4} and the quantity of CH{sub 4} lost during NG extraction in the reference case, the magnitude of N{sub 2}O lost in the anaerobic digestion (AD) process and in AD residue, and the amount of carbon sequestered in AD residue. In many cases, data for these parameters are limited and uncertain. Therefore, more research is needed to gain a better understanding of the range and magnitude of environmental benefits from converting animal manure to RNG via AD.

Han, J.; Mintz, M.; Wang, M. (Energy Systems)

2011-12-14T23:59:59.000Z

371

Levelized Costs for Nuclear, Gas and Coal for Electricity, under the Mexican Scenario  

SciTech Connect

In the case of new nuclear power stations, it is necessary to pay special attention to the financial strategy that will be applied, time of construction, investment cost, and the discount and return rate. The levelized cost quantifies the unitary cost of the electricity (the kWh) generated during the lifetime of the nuclear power plant; and allows the immediate comparison with the cost of other alternative technologies. The present paper shows levelized cost for different nuclear technologies and it provides comparison among them as well as with gas and coal electricity plants. For the calculations we applied our own methodology to evaluate the levelized cost considering investment, fuel and operation and maintenance costs, making assumptions for the Mexican market, and taking into account the gas prices projections. The study also shows comparisons using different discount rates (5% and 10%), and some comparisons between our results and an OECD 1998 study. The results are i n good agreement and shows that nuclear option is cost competitive in Mexico on the basis of levelized costs.

Palacios, J.C.; Alonso, G.; Ramirez, R.; Gomez, A.; Ortiz, J.; Longoria, L.C.

2004-10-06T23:59:59.000Z

372

Development and Demonstration of Waste Heat Integration with Solvent Process for More Efficient CO2 Removal from Coal-Fired Flue Gas  

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

and Demonstration of and Demonstration of Waste Heat Integration with Solvent Process for More Efficient CO 2 Removal from Coal-Fired Flue Gas Background The mission of the U.S. Department of Energy/National Energy Technology Laboratory (DOE/NETL) Existing Plants, Emissions, & Capture (EPEC) Research & Development (R&D) Program is to develop innovative environmental control technologies to enable full use of the nation's vast coal reserves, while at the same time allowing the current fleet of coal-

373

Wyoming coal-conversion project. Final technical report, November 1980-February 1982. [Proposed WyCoalGas project, Converse County, Wyoming; contains list of appendices with title and identification  

Science Conference Proceedings (OSTI)

This final technical report describes what WyCoalGas, Inc. and its subcontractors accomplished in resolving issues related to the resource, technology, economic, environmental, socioeconomic, and governmental requirements affecting a project located near Douglas, Wyoming for producing 150 Billion Btu per day by gasifying sub-bituminous coal. The report summarizes the results of the work on each task and includes the deliverables that WyCoalGas, Inc. and the subcontractors prepared. The co-venturers withdrew from the project for two reasons: federal financial assistance to the project was seen to be highly uncertain; and funds were being expended at an unacceptably high rate.

None

1982-01-01T23:59:59.000Z

374

Quantifying the value that energy efficiency and renewable energy provide as a hedge against volatile natural gas prices  

E-Print Network (OSTI)

supply contracts and natural gas storage. Lacking sufficientsupply contracts and natural gas storage facilities. Since,natural gas utilities, Xcel Energy noted that the cost of seasonal storage

Bolinger, Mark; Wiser, Ryan; Bachrach, Devra; Golove, William

2002-01-01T23:59:59.000Z

375

Quantifying the value that energy efficiency and renewable energy provide as a hedge against volatile natural gas prices  

E-Print Network (OSTI)

Against Volatile Natural Gas Prices Mark Bolinger, Ryanwake of unprecedented natural gas price volatility duringyears) to a 10-year natural gas price forecast (i.e. , what

Bolinger, Mark; Wiser, Ryan; Bachrach, Devra; Golove, William

2002-01-01T23:59:59.000Z

376

Quantifying the value that energy efficiency and renewable energy provide as a hedge against volatile natural gas prices  

E-Print Network (OSTI)

Against Volatile Natural Gas Prices Mark Bolinger, Ryanof unprecedented natural gas price volatility during thethe cost of hedging gas price risk through financial hedging

Bolinger, Mark; Wiser, Ryan; Bachrach, Devra; Golove, William

2002-01-01T23:59:59.000Z

377

Chemicals from coal  

Science Conference Proceedings (OSTI)

This chapter contains sections titled: Chemicals from Coke Oven Distillate; The Fischer-Tropsch Reaction; Coal Hydrogenation; Substitute Natural Gas (SNG); Synthesis Gas Technology; Calcium Carbide; Coal and the Environment; and Notes and References

Harold A. Wittcoff; Bryan G. Reuben; Jeffrey S. Plotkin

2004-12-01T23:59:59.000Z

378

Using auxiliary gas power for CCS energy needs in retrofitted coal power plants  

E-Print Network (OSTI)

Post-combustion capture retrofits are expected to a near-term option for mitigating CO 2 emissions from existing coal-fired power plants. Much of the literature proposes using power from the existing coal plant and thermal ...

Bashadi, Sarah (Sarah Omer)

2010-01-01T23:59:59.000Z

379

Evaluation of sorbents for the cleanup of coal-derived synthesis gas at elevated temperatures  

E-Print Network (OSTI)

Integrated Gasification Combined Cycle (IGCC) with carbon dioxide capture is a promising technology to produce electricity from coal at a higher efficiency than with traditional subcritical pulverized coal (PC) power plants. ...

Couling, David Joseph

2012-01-01T23:59:59.000Z

380

Accounting for fuel price risk: Using forward natural gas prices instead of gas price forecasts to compare renewable to natural gas-fired generation  

E-Print Network (OSTI)

energy resources such as wind power carry no natural gas fuel priceenergy resources such as wind, geothermal, biomass, solar, and hydro power are often sold on a fixed-price

Bolinger, Mark; Wiser, Ryan; Golove, William

2003-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "gas coal renewables" 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

Accounting for fuel price risk: Using forward natural gas prices instead of gas price forecasts to compare renewable to natural gas-fired generation  

E-Print Network (OSTI)

biomass in particular – are subject to fuel price risks ofbiomass, solar, and hydro power are often sold on a fixed-pricebiomass, solar, and hydro power, which by their nature are immune to natural gas fuel price

Bolinger, Mark; Wiser, Ryan; Golove, William

2003-01-01T23:59:59.000Z

382

Renewable Energy  

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

Renewable energy leveraged from natural, renewable resources delivers electricity, heating, cooling, and other applications to Federal facilities and fleets. By using renewable energy, Federal agencies increase national security, conserve natural resources, and meet regulatory requirements and goals.

383

Bioconversion of coal-derived synthesis gas to liquid fuels. Final technical report, September 1, 1990--August 31, 1991  

DOE Green Energy (OSTI)

The use of coal-derived synthesis gas as an industrial feedstock for production of fuels and chemicals has become an increasingly attractive alternative to present petroleum-based chemicals production. However, one of the major limitations in developing such a process is the required removal of catalyst poisons such as hydrogen sulfide (H{sub 2}S), carbonyl sulfide (COS), and other trace contaminants from the synthesis gas. Purification steps necessary to remove these are energy intensive and add significantly to the production cost, particularly for coals having a high sulfur content such as Illinois coal. A two-stage, anaerobic bioconversion process requiring little or no sulfur removal is proposed, where in the first stage the carbon monoxide (CO) gas is converted to butyric and acetic acids by the CO strain of Butyribacterium methylotrophicum. In the second stage, these acids along with the hydrogen (H{sub 2}) gas are converted to butanol, ethanol, and acetone by an acid utilizing mutant of Clostridium acetobutylicum. 18 figs., 18 tabs.

Jain, M.K.

1991-12-31T23:59:59.000Z

384

China's Coal: Demand, Constraints, and Externalities  

Science Conference Proceedings (OSTI)

This study analyzes China's coal industry by focusing on four related areas. First, data are reviewed to identify the major drivers of historical and future coal demand. Second, resource constraints and transport bottlenecks are analyzed to evaluate demand and growth scenarios. The third area assesses the physical requirements of substituting coal demand growth with other primary energy forms. Finally, the study examines the carbon- and environmental implications of China's past and future coal consumption. There are three sections that address these areas by identifying particular characteristics of China's coal industry, quantifying factors driving demand, and analyzing supply scenarios: (1) reviews the range of Chinese and international estimates of remaining coal reserves and resources as well as key characteristics of China's coal industry including historical production, resource requirements, and prices; (2) quantifies the largest drivers of coal usage to produce a bottom-up reference projection of 2025 coal demand; and (3) analyzes coal supply constraints, substitution options, and environmental externalities. Finally, the last section presents conclusions on the role of coal in China's ongoing energy and economic development. China has been, is, and will continue to be a coal-powered economy. In 2007 Chinese coal production contained more energy than total Middle Eastern oil production. The rapid growth of coal demand after 2001 created supply strains and bottlenecks that raise questions about sustainability. Urbanization, heavy industrial growth, and increasing per-capita income are the primary interrelated drivers of rising coal usage. In 2007, the power sector, iron and steel, and cement production accounted for 66% of coal consumption. Power generation is becoming more efficient, but even extensive roll-out of the highest efficiency units would save only 14% of projected 2025 coal demand for the power sector. A new wedge of future coal consumption is likely to come from the burgeoning coal-liquefaction and chemicals industries. If coal to chemicals capacity reaches 70 million tonnes and coal-to-liquids capacity reaches 60 million tonnes, coal feedstock requirements would add an additional 450 million tonnes by 2025. Even with more efficient growth among these drivers, China's annual coal demand is expected to reach 3.9 to 4.3 billion tonnes by 2025. Central government support for nuclear and renewable energy has not reversed China's growing dependence on coal for primary energy. Substitution is a matter of scale: offsetting one year of recent coal demand growth of 200 million tonnes would require 107 billion cubic meters of natural gas (compared to 2007 growth of 13 BCM), 48 GW of nuclear (compared to 2007 growth of 2 GW), or 86 GW of hydropower capacity (compared to 2007 growth of 16 GW). Ongoing dependence on coal reduces China's ability to mitigate carbon dioxide emissions growth. If coal demand remains on a high growth path, carbon dioxide emissions from coal combustion alone would exceed total US energy-related carbon emissions by 2010. Within China's coal-dominated energy system, domestic transportation has emerged as the largest bottleneck for coal industry growth and is likely to remain a constraint to further expansion. China has a low proportion of high-quality reserves, but is producing its best coal first. Declining quality will further strain production and transport capacity. Furthermore, transporting coal to users has overloaded the train system and dramatically increased truck use, raising transportation oil demand. Growing international imports have helped to offset domestic transport bottlenecks. In the long term, import demand is likely to exceed 200 million tonnes by 2025, significantly impacting regional markets.

Aden, Nathaniel; Fridley, David; Zheng, Nina

2009-07-01T23:59:59.000Z

385

Systems Study for Improving Gas Turbine Performance for Coal/IGCC Application  

SciTech Connect

This study identifies vital gas turbine (GT) parameters and quantifies their influence in meeting the DOE Turbine Program overall Integrated Gasification Combined Cycle (IGCC) plant goals of 50% net HHV efficiency, $1000/kW capital cost, and low emissions. The project analytically evaluates GE advanced F class air cooled technology level gas turbine conceptual cycle designs and determines their influence on IGCC plant level performance including impact of Carbon capture. This report summarizes the work accomplished in each of the following six Tasks. Task 1.0--Overall IGCC Plant Level Requirements Identification: Plant level requirements were identified, and compared with DOE's IGCC Goal of achieving 50% Net HHV Efficiency and $1000/KW by the Year 2008, through use of a Six Sigma Quality Functional Deployment (QFD) Tool. This analysis resulted in 7 GT System Level Parameters as the most significant. Task 2.0--Requirements Prioritization/Flow-Down to GT Subsystem Level: GT requirements were identified, analyzed and prioritized relative to achieving plant level goals, and compared with the flow down of power island goals through use of a Six Sigma QFD Tool. This analysis resulted in 11 GT Cycle Design Parameters being selected as the most significant. Task 3.0--IGCC Conceptual System Analysis: A Baseline IGCC Plant configuration was chosen, and an IGCC simulation analysis model was constructed, validated against published performance data and then optimized by including air extraction heat recovery and GE steam turbine model. Baseline IGCC based on GE 207FA+e gas turbine combined cycle has net HHV efficiency of 40.5% and net output nominally of 526 Megawatts at NOx emission level of 15 ppmvd{at}15% corrected O2. 18 advanced F technology GT cycle design options were developed to provide performance targets with increased output and/or efficiency with low NOx emissions. Task 4.0--Gas Turbine Cycle Options vs. Requirements Evaluation: Influence coefficients on 4 key IGCC plant level parameters (IGCC Net Efficiency, IGCC Net Output, GT Output, NOx Emissions) of 11 GT identified cycle parameters were determined. Results indicate that IGCC net efficiency HHV gains up to 2.8 pts (40.5% to 43.3%) and IGCC net output gains up to 35% are possible due to improvements in GT technology alone with single digit NOx emission levels. Task 5.0--Recommendations for GT Technical Improvements: A trade off analysis was conducted utilizing the performance results of 18 gas turbine (GT) conceptual designs, and three most promising GT candidates are recommended. A roadmap for turbine technology development is proposed for future coal based IGCC power plants. Task 6.0--Determine Carbon Capture Impact on IGCC Plant Level Performance: A gas turbine performance model for high Hydrogen fuel gas turbine was created and integrated to an IGCC system performance model, which also included newly created models for moisturized syngas, gas shift and CO2 removal subsystems. This performance model was analyzed for two gas turbine technology based subsystems each with two Carbon removal design options of 85% and 88% respectively. The results show larger IGCC performance penalty for gas turbine designs with higher firing temperature and higher Carbon removal.

Ashok K. Anand

2005-12-16T23:59:59.000Z

386

Systems Study for Improving Gas Turbine Performance for Coal/IGCC Application  

DOE Green Energy (OSTI)

This study identifies vital gas turbine (GT) parameters and quantifies their influence in meeting the DOE Turbine Program overall Integrated Gasification Combined Cycle (IGCC) plant goals of 50% net HHV efficiency, $1000/kW capital cost, and low emissions. The project analytically evaluates GE advanced F class air cooled technology level gas turbine conceptual cycle designs and determines their influence on IGCC plant level performance including impact of Carbon capture. This report summarizes the work accomplished in each of the following six Tasks. Task 1.0--Overall IGCC Plant Level Requirements Identification: Plant level requirements were identified, and compared with DOE's IGCC Goal of achieving 50% Net HHV Efficiency and $1000/KW by the Year 2008, through use of a Six Sigma Quality Functional Deployment (QFD) Tool. This analysis resulted in 7 GT System Level Parameters as the most significant. Task 2.0--Requirements Prioritization/Flow-Down to GT Subsystem Level: GT requirements were identified, analyzed and prioritized relative to achieving plant level goals, and compared with the flow down of power island goals through use of a Six Sigma QFD Tool. This analysis resulted in 11 GT Cycle Design Parameters being selected as the most significant. Task 3.0--IGCC Conceptual System Analysis: A Baseline IGCC Plant configuration was chosen, and an IGCC simulation analysis model was constructed, validated against published performance data and then optimized by including air extraction heat recovery and GE steam turbine model. Baseline IGCC based on GE 207FA+e gas turbine combined cycle has net HHV efficiency of 40.5% and net output nominally of 526 Megawatts at NOx emission level of 15 ppmvd{at}15% corrected O2. 18 advanced F technology GT cycle design options were developed to provide performance targets with increased output and/or efficiency with low NOx emissions. Task 4.0--Gas Turbine Cycle Options vs. Requirements Evaluation: Influence coefficients on 4 key IGCC plant level parameters (IGCC Net Efficiency, IGCC Net Output, GT Output, NOx Emissions) of 11 GT identified cycle parameters were determined. Results indicate that IGCC net efficiency HHV gains up to 2.8 pts (40.5% to 43.3%) and IGCC net output gains up to 35% are possible due to improvements in GT technology alone with single digit NOx emission levels. Task 5.0--Recommendations for GT Technical Improvements: A trade off analysis was conducted utilizing the performance results of 18 gas turbine (GT) conceptual designs, and three most promising GT candidates are recommended. A roadmap for turbine technology development is proposed for future coal based IGCC power plants. Task 6.0--Determine Carbon Capture Impact on IGCC Plant Level Performance: A gas turbine performance model for high Hydrogen fuel gas turbine was created and integrated to an IGCC system performance model, which also included newly created models for moisturized syngas, gas shift and CO2 removal subsystems. This performance model was analyzed for two gas turbine technology based subsystems each with two Carbon removal design options of 85% and 88% respectively. The results show larger IGCC performance penalty for gas turbine designs with higher firing temperature and higher Carbon removal.

Ashok K. Anand

2005-12-16T23:59:59.000Z

387

The Base Load Fallacy and other Fallacies disseminated by Renewable Energy Deniers  

E-Print Network (OSTI)

Abstract: The Base-Load Fallacy is the incorrect notion that renewable energy cannot supply base-load (24-hour) electric power. Alternatives to base-load coal power can be provided by efficient energy use, solar hot water, bioenergy, large-scale wind power, solar thermal electricity with thermal storage, and geothermal, with gas power playing a transitional role. In particular, large-scale wind power from geographically distributed sites is partially reliable and can be made more so by installing a little additional low-cost peak-load back-up from gas turbines. Other fallacies are refuted concisely in the appendix. 1 Opponents of renewable energy, from the coal and nuclear industries and from NIMBY (Not In My Backyard) groups, are disseminating the Base-Load Fallacy, that is, the fallacy that renewable energy cannot provide base-load (24-hour) power to substitute for coal-fired electricity. In Australia, even Government Ministers and some journalists are propagating this conventional ‘wisdom’, although it is false. This fallacy is the principal weapon of renewable energy deniers. Other fallacies are discussed briefly in the appendix. The political implications are that, if these fallacies become widely believed, renewable energy would always have to remain a niche market, rather than achieve its true potential of becoming a

Dr Mark Diesendorf

2010-01-01T23:59:59.000Z

388

Advanced Coal Wind Hybrid: Economic Analysis  

E-Print Network (OSTI)

Coal prices have been far less volatile than natural gas prices.Coal Prices Figure 9 is similar to Figure 8 except the natural gas pricesCoal Wind Hybrid: Economic Analysis interested in natural gas prices

Phadke, Amol

2008-01-01T23:59:59.000Z

389

Renewable Fuels Module This  

U.S. Energy Information Administration (EIA) Indexed Site

Fuels Module Fuels Module This page inTenTionally lefT blank 175 U.S. Energy Information Administration | Assumptions to the Annual Energy Outlook 2013 Renewable Fuels Module The NEMS Renewable Fuels Module (RFM) provides natural resources supply and technology input information for projections of new central-station U.S. electricity generating capacity using renewable energy resources. The RFM has seven submodules representing various renewable energy sources: biomass, geothermal, conventional hydroelectricity, landfill gas, solar thermal, solar photovoltaics, and wind [1]. Some renewables, such as landfill gas (LFG) from municipal solid waste (MSW) and other biomass materials, are fuels in the conventional sense of the word, while others, such as water, wind, and solar radiation, are energy sources that do not involve

390

Renewable Fuels Module  

Gasoline and Diesel Fuel Update (EIA)

page intentionally left blank page intentionally left blank 167 U.S. Energy Information Administration | Assumptions to the Annual Energy Outlook 2011 Renewable Fuels Module The NEMS Renewable Fuels Module (RFM) provides natural resources supply and technology input information for projections of new central-station U.S. electricity generating capacity using renewable energy resources. The RFM has seven submodules representing various renewable energy sources: biomass, geothermal, conventional hydroelectricity, landfill gas, solar thermal, solar photovoltaics, and wind [1]. Some renewables, such as landfill gas (LFG) from municipal solid waste (MSW) and other biomass materials, are fuels in the conventional sense of the word, while others, such as water, wind, and solar radiation, are energy sources that do not involve the

391

Thermodynamic simulation of transfer of lead, cadmium, and zinc to the gas phase during oxidative and reductive thermal treatment of coals from some coal deposits of the Russian federation  

SciTech Connect

The results of thermodynamic study of the distribution of Pb, Cd, and Zn during the thermal processing of coals from the Kuznetsk and Moscow basins and the Berezovskoe coal deposit of the Kansk-Achinsk basin at different excess oxidant (air) factors and in an inert (argon) medium are presented. The equilibrium forms of compounds were revealed, and their concentrations in the gas and condensed phase were calculated. Trace elements get into the gas phase during the heat treatment of coals in both oxidizing and reducing media. Their most intense transfer to the gas phase takes place at a = 0.4. An increase in temperature enhances this process, and an increase in the ash content of coal decreased the extent of transfer. 9 refs., 10 tabs.

L.N. Lebedeva; L.A. Kost; E.G. Gorlov; E.V. Samuilov [FGUP Institute for Fossil Fuels, Moscow (Russian Federation)

2007-02-15T23:59:59.000Z

392

Quantifying the value that energy efficiency and renewable energy provide as a hedge against volatile natural gas prices  

E-Print Network (OSTI)

hedges include fixed- price natural gas supply contractsfixed-price gas supply contracts and natural gas storage.natural gas storage facilities. Since, in contrast to many financial hedges, physical supply

Bolinger, Mark; Wiser, Ryan; Bachrach, Devra; Golove, William

2002-01-01T23:59:59.000Z

393

Apples with apples: accounting for fuel price risk in comparisons of gas-fired and renewable generation  

E-Print Network (OSTI)

common practice of using gas price forecasts in long-rangeit is likely that gas prices in the US will continue to bethat natural gas prices (and gas price volatility) have a

Bolinger, Mark; Wiser, Ryan

2003-01-01T23:59:59.000Z

394

Renewable Energy | Open Energy Information  

Open Energy Info (EERE)

Energy Conversion Technology Biomass, solid fuels Combustion (direct-fired, cofiring with coal); GasificationPyrolysis Biomass, gas and liquid fuels Fuel Cells Geothermal Dry...

395

Outlook and Challenges for Chinese Coal  

Science Conference Proceedings (OSTI)

China has been, is, and will continue to be a coal-powered economy. The rapid growth of coal demand since 2001 has created deepening strains and bottlenecks that raise questions about supply security. Although China's coal is 'plentiful,' published academic and policy analyses indicate that peak production will likely occur between 2016 and 2029. Given the current economic growth trajectory, domestic production constraints will lead to a coal gap that is not likely to be filled with imports. Urbanization, heavy industry growth, and increasing per-capita consumption are the primary drivers of rising coal usage. In 2006, the power sector, iron and steel, and cement accounted for 71% of coal consumption. Power generation is becoming more efficient, but even extensive roll-out of the highest efficiency units could save only 14% of projected 2025 coal demand. If China follows Japan, steel production would peak by 2015; cement is likely to follow a similar trajectory. A fourth wedge of future coal consumption is likely to come from the burgeoning coal-liquefaction and chemicals industries. New demand from coal-to-liquids and coal-to-chemicals may add 450 million tonnes of coal demand by 2025. Efficient growth among these drivers indicates that China's annual coal demand will reach 4.2 to 4.7 billion tonnes by 2025. Central government support for nuclear and renewable energy has not been able to reduce China's growing dependence on coal for primary energy. Few substitution options exist: offsetting one year of recent coal demand growth would require over 107 billion cubic meters of natural gas, 48 GW of nuclear, or 86 GW of hydropower capacity. While these alternatives will continue to grow, the scale of development using existing technologies will be insufficient to substitute significant coal demand before 2025. The central role of heavy industry in GDP growth and the difficulty of substituting other fuels suggest that coal consumption is inextricably entwined with China's economy in its current mode of growth. Ongoing dependence on coal reduces China's ability to mitigate carbon dioxide emissions growth. If coal demand remains on its current growth path, carbon dioxide emissions from coal combustion alone would exceed total US energy-related carbon emissions by 2010. Broadening awareness of the environmental costs of coal mining, transport, and combustion is raising the pressure on Chinese policy makers to find alternative energy sources. Within China's coal-dominated energy system, domestic transportation has emerged as the largest bottleneck for coal industry growth and is likely to remain a constraint to further expansion. China is short of high-quality reserves, but is producing its best coal first. Declining quality will further strain production and transport. Transporting coal to users has overloaded the train system and dramatically increased truck use, raising transport oil demand. Growing international imports have helped to offset domestic transport bottlenecks. In the long term, import demand is likely to exceed 200 mt by 2025, significantly impacting regional markets. The looming coal gap threatens to derail China's growth path, possibly undermining political, economic, and social stability. High coal prices and domestic shortages will have regional and global effects. Regarding China's role as a global manufacturing center, a domestic coal gap will increase prices and constrain growth. Within the Asia-Pacific region, China's coal gap is likely to bring about increased competition with other coal-importing countries including Japan, South Korea, Taiwan, and India. As with petroleum, China may respond with a government-supported 'going-out' strategy of resource acquisition and vertical integration. Given its population and growing resource constraints, China may favor energy security, competitiveness, and local environmental protection over global climate change mitigation. The possibility of a large coal gap suggests that Chinese and international policy makers should maximize institutional and financial support

Aden, Nathaniel T.; Fridley, David G.; Zheng, Nina

2008-06-20T23:59:59.000Z

396

Comparing the risk profiles of renewable and natural gas electricity contracts: A summary of the California Department of Water Resources contracts  

SciTech Connect

Electricity markets in the United States have witnessed unprecedented instability over the last few years, with substantial volatility in wholesale market prices, significant financial distress among major industry organizations, and unprecedented legal, regulatory and legislative activity. These events demonstrate the considerable risks that exist in the electricity industry. Recent industry instability also illustrates the need for thoughtful resource planning to balance the cost, reliability, and risk of the electricity supplied to end-use customers. In balancing different supply options, utilities, regulators, and other resource planners must consider the unique risk profiles of each generating source. This paper evaluates the relative risk profiles of renewable and natural gas generating plants. The risks that exist in the electricity industry depend in part on the technologies that are used to generate electricity. Natural gas has become the fuel of choice for new power plant additions in the United States. To some, this emphasis on a single fuel source signals the potential for increased risk. Renewable generation sources, on the other hand, are frequently cited as a potent source of socially beneficial risk reduction relative to natural gas-fired generation. Renewable generation is not risk free, however, and also imposes certain costs on the electricity sector. This paper specifically compares the allocation and mitigation of risks in long-term natural gas-fired electricity contracts with the allocation and mitigation of these same risks in long-term renewable energy contracts. This comparison highlights some of the key differences between renewable and natural gas generation that decision makers should consider when making electricity investment and contracting decisions. Our assessment is relevant in both regulated and restructured markets. In still-regulated markets, the audience for this report clearly includes regulators and the utilities they regulate. In restructured markets, the role of regulatory oversight of resource planning is more limited. Nonetheless, even in restructured markets, it is increasingly recognized that regulators have a critical role to play in directing the resource planning of providers of last resort--electric suppliers that provide service to those customers who choose not to switch to a competitive supplier. Our review of electricity contracts may also have educational value for those unfamiliar with the typical contents of these agreements. Details of our findings are provided in the body of the paper, but this summary is written to provide a concise alternative to reading the full report.

Bachrach, Devra; Wiser, Ryan; Bolinger, Mark; Golove, William

2003-03-12T23:59:59.000Z

397

Enhancing the use of coals by gas reburning-sorbent injection. Volume 3, Gas reburning-sorbent injection at Edwards Unit 1, Central Illinois Light Company  

Science Conference Proceedings (OSTI)

Design work has been completed for a Gas Reburning-Sorbent Injection (GR-SI) system to reduce emissions of NO{sub x}, and SO{sub 2} from a wall fired unit. A GR-SI system was designed for Central Illinois Light Company`s Edwards Station Unit 1, located in Bartonville, Illinois. The unit is rated at 117 MW(e) (net) and is front wall fired with a pulverized bituminous coal blend. The goal of the project was to reduce emissions of NO{sub x} by 60%, from the ``as found`` baseline of 0.98 lb/MBtu (420 mg/MJ), and to reduce emissions of S0{sub 2} by 50%. Since the unit currently fires a blend of high sulfur Illinois coal and low sulfur Kentucky coal to meet an S0{sub 2} limit Of 1.8 lb/MBtu (770 mg/MJ), the goal at this site was amended to meeting this limit while increasing the fraction of high sulfur coal to 57% from the current 15% level. GR-SI requires injection of natural gas into the furnace at the level of the top burner row, creating a fuel-rich zone in which NO{sub x} formed in the coal zone is reduced to N{sub 2}. The design natural gas input corresponds to 18% of the total heat input. Burnout (overfire) air is injected at a higher elevation to burn out fuel combustible matter at a normal excess air level of 18%. Recycled flue gas is used to increase the reburning fuel jet momentum, resulting in enhanced mixing. Recycled flue gas is also used to cool the top row of burners which would not be in service during GR operation. Dry hydrated lime sorbent is injected into the upper furnace to react with S0{sub 2}, forming solid CaSO{sub 4} and CaSO{sub 3}, which are collected by the ESP. The SI system design was optimized with respect to gas temperature, injection air flow rate, and sorbent dispersion. Sorbent injection air flow is equal to 3% of the combustion air. The design includes modifications of the ESP, sootblowing, and ash handling systems.

NONE

1994-10-01T23:59:59.000Z

398

Estimating the Amount of Coal Tar Weathering in Sediments by Two-Dimensional Automated-Sequential Gas Chromatography/Mass Spectrometry (GC-GC/MS) and Comprehensive Gas Chromatography/Mass Spectrometry (GCxGC/MS) Techniques — Phase III  

Science Conference Proceedings (OSTI)

This report is intended to inform scientists and engineers concerned with assessing and remediating former manufactured gas plants and other coal tar-contaminated sites. Although the report focuses on coal tar in sediment, the results are equally applicable to studies investigating and remediating coal tar, crude oil, and their by-products in the vadose zone or in ground or pore waters, as well as marine animals. The data provided in this report should allow more accurate analyses to better direct remedi...

2012-03-14T23:59:59.000Z

399

JV Task 5 - Evaluation of Residual Oil Fly Ash As A Mercury Sorbent For Coal Combustion Flue Gas  

SciTech Connect

The mercury adsorption capacity of a residual oil fly ash (ROFA) sample collected form Florida Power and Light Company's Port Everglades Power Plant was evaluated using a bituminous coal combustion flue gas simulator and fixed-bed testing protocol. A size-segregated (>38 {micro}g) fraction of ROFA was ground to a fine powder and brominated to potentially enhance mercury capture. The ROFA and brominated-ROFA were ineffective in capturing or oxidizing the Hg{sup 0} present in a simulated bituminous coal combustion flue gas. In contrast, a commercially available DARCO{reg_sign} FGD initially adsorbed Hg{sup 0} for about an hour and then catalyzed Hg{sup 0} oxidation to produce Hg{sup 2+}. Apparently, the unburned carbon in ROFA needs to be more rigorously activated in order for it to effectively capture and/or oxidize Hg{sup 0}.

Robert Patton

2006-12-31T23:59:59.000Z

400

JV Task 5 - Evaluation of Residual Oil Fly Ash As A Mercury Sorbent For Coal Combustion Flue Gas  

SciTech Connect

The mercury adsorption capacity of a residual oil fly ash (ROFA) sample collected form Florida Power and Light Company's Port Everglades Power Plant was evaluated using a bituminous coal combustion flue gas simulator and fixed-bed testing protocol. A size-segregated (>38 {micro}g) fraction of ROFA was ground to a fine powder and brominated to potentially enhance mercury capture. The ROFA and brominated-ROFA were ineffective in capturing or oxidizing the Hg{sup 0} present in a simulated bituminous coal combustion flue gas. In contrast, a commercially available DARCO{reg_sign} FGD initially adsorbed Hg{sup 0} for about an hour and then catalyzed Hg{sup 0} oxidation to produce Hg{sup 2+}. Apparently, the unburned carbon in ROFA needs to be more rigorously activated in order for it to effectively capture and/or oxidize Hg{sup 0}.

Robert Patton

2006-12-31T23:59:59.000Z

Note: This page contains sample records for the topic "gas coal renewables" 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

Pore structure and reactivity changes in hot coal gas desulfurization sorbents. Final report, September 1987--January 1991  

SciTech Connect

The primary objective of the project was the investigation of the pore structure and reactivity changes occurring in metal/metal oxide sorbents used for desulfurization of hot coal gas during sulfidation and regeneration, with particular emphasis placed on the effects of these changes on the sorptive capacity and efficiency of the sorbents. Commercially available zinc oxide sorbents were used as model solids in our experimental investigation of the sulfidation and regeneration processes.

Sotirchos, S.V.

1991-05-01T23:59:59.000Z

402

Coal feed lock  

DOE Patents (OSTI)

A coal feed lock is provided for dispensing coal to a high pressure gas producer with nominal loss of high pressure gas. The coal feed lock comprises a rotor member with a diametral bore therethrough. A hydraulically activated piston is slidably mounted in the bore. With the feed lock in a charging position, coal is delivered to the bore and then the rotor member is rotated to a discharging position so as to communicate with the gas producer. The piston pushes the coal into the gas producer. The rotor member is then rotated to the charging position to receive the next load of coal.

Pinkel, I. Irving (Fairview Park, OH)

1978-01-01T23:59:59.000Z

403

Comparing Statewide Economic Impacts of New Generation from Wind, Coal, and Natural Gas in Arizona, Colorado, and Michigan  

SciTech Connect

With increasing concerns about energy independence, job outsourcing, and risks of global climate change, it is important for policy makers to understand all impacts from their decisions about energy resources. This paper assesses one aspect of the impacts: direct economic effects. The paper compares impacts to states from equivalent new electrical generation from wind, natural gas, and coal. Economic impacts include materials and labor for construction, operations, maintenance, fuel extraction, and fuel transport, as well as project financing, property tax, and landowner revenues. We examine spending on plant construction during construction years, in addition to all other operational expenditures over a 20-year span. Initial results indicate that adding new wind power can be more economically effective than adding new gas or coal power and that a higher percentage of dollars spent on coal and gas will leave the state. For this report, we interviewed industry representatives and energy experts, in addition to consulting government documents, models, and existing literature. The methodology for this research can be adapted to other contexts for determining economic effects of new power generation in other states and regions.

Tegen, S.

2006-05-01T23:59:59.000Z

404

Comparing Statewide Economic Impacts of New Generation from Wind, Coal, and Natural Gas in Arizona, Colorado, and Michigan: Preprint  

SciTech Connect

With increasing concerns about energy independence, job outsourcing, and risks of global climate change, it is important for policy makers to understand all impacts from their decisions about energy resources. This paper assesses one aspect of the impacts: direct economic effects. The paper compares impacts to states from equivalent new electrical generation from wind, natural gas, and coal. Economic impacts include materials and labor for construction, operations, maintenance, fuel extraction, and fuel transport, as well as project financing, property tax, and landowner revenues. We examine spending on plant construction during construction years, in addition to all other operational expenditures over a 20-year span. Initial results indicate that adding new wind power can be more economically effective than adding new gas or coal power, and that a higher percentage of dollars spent on coal and gas will leave the state. For this report, we interviewed industry representatives and energy experts, in addition to consulting government documents, models, and existing literature. The methodology for this research can be adapted to other contexts for determining economic effects of new power generation in other states and regions.

Tegen, S.

2005-08-01T23:59:59.000Z

405

Fostering a Renewable Energy Technology Industry: An International Comparison of Wind Industry Policy Support Mechanisms  

E-Print Network (OSTI)

to Incentive Renewable Alternative Energy Sources in Brazil.Alternatives to Coal and Candles: Wind Power in China. Energy

Lewis, Joanna; Wiser, Ryan

2005-01-01T23:59:59.000Z

406

Integrated Warm Gas Multicontaminant Cleanup Technologies for Coal-Derived Syngas  

SciTech Connect

One of the key obstacles for the introduction of commercial gasification technology for the production of power with Integrated Gasification Combined Cycle (IGCC) plants or the production of value added chemicals, transportation fuels, and hydrogen has been the cost of these systems. This situation is particularly challenging because the United States has ample coal resources available as raw materials and effective use of these raw materials could help us meet our energy and transportation fuel needs while significantly reducing our need to import oil. One component of the cost of these systems that faces strong challenges for continuous improvement is removing the undesirable components present in the syngas. The need to limit the increase in cost of electricity to < 35% for new coal-based power plants which include CO{sub 2} capture and sequestration addresses both the growing social concern for global climate change resulting from the emission of greenhouse gas and in particular CO{sub 2} and the need to control cost increases to power production necessary to meet this social objective. Similar improvements to technologies for trace contaminants are getting similar pressure to reduce environmental emissions and reduce production costs for the syngas to enable production of chemicals from coal that is cost competitive with oil and natural gas. RTI, with DOE/NETL support, has been developing sorbent technologies that enable capture of trace contaminants and CO{sub 2} at temperatures above 400 °F that achieve better capture performance, lower costs and higher thermal efficiency. This report describes the specific work of sorbent development for mercury (Hg), arsenic (As), selenium (Se), cadmium (Cd), and phosphorous (P) and CO{sub 2} removal. Because the typical concentrations of Hg, As, Se, Cd, and P are less than 10 ppmv, the focus has been on single-use sorbents with sufficient capacity to ensure replacement costs are cost effective. The research in this report describes the development efforts which expand this sorbent development effort to include Se, Cd, and P as well as Hg and As. Additional research has focused on improving removal performance with the goal of achieving effluent concentrations that are suitable for chemical production applications. By contrast, sorbent development for CO{sub 2} capture has focused on regenerable sorbents that capture the CO{sub 2} byproduct at higher CO{sub 2} pressures. Previous research on CO{sub 2} sorbents has demonstrated that the most challenging aspect of developing CO{sub 2} sorbents is regeneration. The research documented in this report investigates options to improve regeneration of the CO{sub 2} capture sorbents. This research includes effort on addressing existing regeneration limitations for sorbents previously developed and new approaches that focus initially on the regeneration performance of the sorbent.

Turk, Brian; Gupta, Raghubir; Sharma, Pradeepkumar; Albritton, Johnny; Jamal, Aqil

2010-09-30T23:59:59.000Z

407

LEAD COMMISSIONER REPORT RENEWABLE POWER IN  

E-Print Network (OSTI)

, interconnection, land use planning, landfill gas, levelized cost, local government, natural gas, permitting Energy Conservation Plan, digester gas, distributed generation, energy storage, environmental impacts, environmental justice, feedin tariff, financing, geothermal, greenhouse gas emissions, renewable integration

408

Simulated Coal-Gas-Fueled Molten Carbonate Fuel Cell Development Program. Final report  

DOE Green Energy (OSTI)

This final report summarizes the technical work performed under Department of Energy Contract DE-AC21-91MC27393, ``Simulated Coal- Gas-Fueled Molten Carbonate Fuel Cell Development Program.`` This work consists of five major tasks and their respective subtasks as listed below. A brief description of each task is also provided. The Stack Design Requirements task focused on requirements and specification for designing, constructing, and testing a nominal 100-kilowatt integrated stack and on requirements for the balance-of-plant equipment to support a 1000-kilowatt integrated stack demonstrator. The Stack Design Preparation task focused on the mechanical design of a 100-kilowatt stack comprised of 8-ft{sup 2} cells incorporating the new cell configuration and component technology improvements developed in the previous DOE MCFC contract. Electrode Casting focused on developing a faster drying solvent for use in the electrode tape casting process. Electrode Heat Treatment was directed at scaling up the laboratory continuous debinding process to a new full-size IFC debinding oven coupled to a continuous belt furnace that will both debind and sinter the electrodes in one continuous process train. Repeat Part Quality Assurance and Testing provided the appropriate effort to ensure consistent, high-quality, reproducible and comparable repeat parts.

Not Available

1992-08-01T23:59:59.000Z

409

Simulated Coal-Gas-Fueled Molten Carbonate Fuel Cell Development Program  

DOE Green Energy (OSTI)

This final report summarizes the technical work performed under Department of Energy Contract DE-AC21-91MC27393, Simulated Coal- Gas-Fueled Molten Carbonate Fuel Cell Development Program.'' This work consists of five major tasks and their respective subtasks as listed below. A brief description of each task is also provided. The Stack Design Requirements task focused on requirements and specification for designing, constructing, and testing a nominal 100-kilowatt integrated stack and on requirements for the balance-of-plant equipment to support a 1000-kilowatt integrated stack demonstrator. The Stack Design Preparation task focused on the mechanical design of a 100-kilowatt stack comprised of 8-ft[sup 2] cells incorporating the new cell configuration and component technology improvements developed in the previous DOE MCFC contract. Electrode Casting focused on developing a faster drying solvent for use in the electrode tape casting process. Electrode Heat Treatment was directed at scaling up the laboratory continuous debinding process to a new full-size IFC debinding oven coupled to a continuous belt furnace that will both debind and sinter the electrodes in one continuous process train. Repeat Part Quality Assurance and Testing provided the appropriate effort to ensure consistent, high-quality, reproducible and comparable repeat parts.

Not Available

1992-08-01T23:59:59.000Z

410

Sorbent Injection for Small ESP Mercury Control in Low Sulfur Eastern Bituminous Coal Flue Gas  

SciTech Connect

This project Final Report is submitted to the U.S. Department of Energy (DOE) as part of Cooperative Agreement DE-FC26-03NT41987, 'Sorbent Injection for Small ESP Mercury Control in Low Sulfur Eastern Bituminous Coal Flue Gas.' Sorbent injection technology is targeted as the primary mercury control process on plants burning low/medium sulfur bituminous coals equipped with ESP and ESP/FGD systems. About 70% of the ESPs used in the utility industry have SCAs less than 300 ft2/1000 acfm. Prior to this test program, previous sorbent injection tests had focused on large-SCA ESPs. This DOE-NETL program was designed to generate data to evaluate the performance and economic feasibility of sorbent injection for mercury control at power plants that fire bituminous coal and are configured with small-sized electrostatic precipitators and/or an ESP-flue gas desulfurization (FGD) configuration. EPRI and Southern Company were co-funders for the test program. Southern Company and Reliant Energy provided host sites for testing and technical input to the project. URS Group was the prime contractor to NETL. ADA-ES and Apogee Scientific Inc. were sub-contractors to URS and was responsible for all aspects of the sorbent injection systems design, installation and operation at the different host sites. Full-scale sorbent injection for mercury control was evaluated at three sites: Georgia Power's Plant Yates Units 1 and 2 [Georgia Power is a subsidiary of the Southern Company] and Reliant Energy's Shawville Unit 3. Georgia Power's Plant Yates Unit 1 has an existing small-SCA cold-side ESP followed by a Chiyoda CT-121 wet scrubber. Yates Unit 2 is also equipped with a small-SCA ESP and a dual flue gas conditioning system. Unit 2 has no SO2 control system. Shawville Unit 3 is equipped with two small-SCA cold-side ESPs operated in series. All ESP systems tested in this program had SCAs less than 250 ft2/1000 acfm. Short-term parametric tests were conducted on Yates Units 1 and 2 to evaluate the performance of low-cost activated carbon sorbents for removing mercury. In addition, the effects of the dual flue gas conditioning system on mercury removal performance were evaluated as part of short-term parametric tests on Unit 2. Based on the parametric test results, a single sorbent (e.g., RWE Super HOK) was selected for a 30-day continuous injection test on Unit 1 to observe long-term performance of the sorbent as well as its effects on ESP and FGD system operations as well as combustion byproduct properties. A series of parametric tests were also performed on Shawville Unit 3 over a three-week period in which several activated carbon sorbents were injected into the flue gas duct just upstream of either of the two Unit 3 ESP units. Three different sorbents were evaluated in the parametric test program for the combined ESP 1/ESP 2 system in which sorbents were injected upstream of ESP 1: RWE Super HOK, Norit's DARCO Hg, and a 62:38 wt% hydrated lime/DARCO Hg premixed reagent. Five different sorbents were evaluated for the ESP 2 system in which activated carbons were injected upstream of ESP 2: RWE Super HOK and coarse-ground HOK, Norit's DARCO Hg and DARCO Hg-LH, and DARCO Hg with lime injection upstream of ESP 1. The hydrated lime tests were conducted to reduce SO3 levels in an attempt to enhance the mercury removal performance of the activated carbon sorbents. The Plant Yates and Shawville studies provided data required for assessing carbon performance and long-term operational impacts for flue gas mercury control across small-sized ESPs, as well as for estimating the costs of full-scale sorbent injection processes.

Carl Richardson; Katherine Dombrowski; Douglas Orr

2006-12-31T23:59:59.000Z

411

Renewable Hydrogen: Technology Review and Policy Recommendations for State-Level Sustainable Energy Futures  

E-Print Network (OSTI)

and Natural Gas, National Renewable Energy Laboratory, U.S.Solar Energy, National Renewable Energy Laboratory, NREL/TP-Solar Hydrogen,” In Renewable Energy: Sources for Fuels and

Lipman, Timothy; Edwards, Jennifer Lynn; Brooks, Cameron

2006-01-01T23:59:59.000Z

412

Renewable Hydrogen: Technology Review and Policy Recommendations for State-Level Sustainable Energy Futures  

E-Print Network (OSTI)

1: U.S. and International Renewable Hydrogen Demonstrationfueling station powered by renewable electricity. The systemand Natural Gas, National Renewable Energy Laboratory, U.S.

Lipman, Timothy; Edwards, Jennifer Lynn; Brooks, Cameron

2006-01-01T23:59:59.000Z

413

Quantifying the value that energy efficiency and renewable energy provide as a hedge against volatile natural gas prices  

E-Print Network (OSTI)

EIA’s historic natural gas prices delivered to electricityremained until the natural gas price spike of 2000 sent itto hedge away natural gas price risk over a 10-year period

Bolinger, Mark; Wiser, Ryan; Bachrach, Devra; Golove, William

2002-01-01T23:59:59.000Z

414

Comparative analysis of the production costs and life-cycle GHG emissions of FT liquid fuels from coal and natural gas  

SciTech Connect

Liquid transportation fuels derived from coal and natural gas could help the United States reduce its dependence on petroleum. The fuels could be produced domestically or imported from fossil fuel-rich countries. The goal of this paper is to determine the life-cycle GHG emissions of coal- and natural gas-based Fischer-Tropsch (FT) liquids, as well as to compare production costs. The results show that the use of coal- or natural gas-based FT liquids will likely lead to significant increases in greenhouse gas (GHG) emissions compared to petroleum-based fuels. In a best-case scenario, coal- or natural gas-based FT-liquids have emissions only comparable to petroleum-based fuels. In addition, the economic advantages of gas-to-liquid (GTL) fuels are not obvious: there is a narrow range of petroleum and natural gas prices at which GTL fuels would be competitive with petroleum-based fuels. CTL fuels are generally cheaper than petroleum-based fuels. However, recent reports suggest there is uncertainty about the availability of economically viable coal resources in the United States. If the U.S. has a goal of increasing its energy security, and at the same time significantly reducing its GHG emissions, neither CTL nor GTL consumption seem a reasonable path to follow. 28 refs., 2 figs., 4 tabs.

Paulina Jaramillo; W. Michael Griffin; H. Scott Matthews [Carnegie Mellon University, Pittsburgh, PA (USA). Civil and Environmental Engineering Department

2008-10-15T23:59:59.000Z

415

Apples with apples: accounting for fuel price risk in comparisons of gas-fired and renewable generation  

E-Print Network (OSTI)

natural gas combined-cycle and combustion turbine power plantsnatural gas has become the fuel of choice for new power plants

Bolinger, Mark; Wiser, Ryan

2003-01-01T23:59:59.000Z

416

Losses and Costs Associated with Coal vs. Natural Gas Firing at Hanes Dye and Finishing.  

E-Print Network (OSTI)

??Due to decreasing production and rising coal prices, the engineering and management staff at Hanes Dye and Finishing in Winston Salem, NC have been investigating… (more)

Gibides, Justin Tyler

2009-01-01T23:59:59.000Z

417

INVESTIGATION INTO THE EFFECTS OF TRACE COAL SYN GAS SPECIES ON THE PERFORMANCE OF SOLID OXIDE FUEL CELL ANODES.  

E-Print Network (OSTI)

??Coal is the United States’ most widely used fossil fuel for the production of electric power. Coal’s availability and cost dictates that it will be… (more)

Trembly, Jason P.

2007-01-01T23:59:59.000Z

418

In situ parametric study of alkali release in pulverized coal combustion: Effects of operating conditions and gas composition  

Science Conference Proceedings (OSTI)

This work concerns a parametric study of alkali release in a lab-scale, pulverized coal combustor (drop tube reactor) at atmospheric pressure. Measurements were made at steady reactor conditions using excimer laser fragmentation fluorescence (ELIF) and with direct optical access to the flue gas pipe. In this way, absolute gas-phase alkali species could be determined in situ, continuously, with sub-ppb sensitivity, directly in the flue gas. A hard coal was fired in the range 1000-1300{sup o}C, for residence times in the range 3-5 s and for air numbers {lambda} (air/fuel ratios) from 1.15 to 1.50. In addition, the amount of chlorine, water vapor and sulfur, respectively, was increased in known amounts by controlled dosing of HCl, H{sub 2}O and SO{sub 2} into the combustion gas to determine effects of these components on release or capture of the alkali species. The experimental results are also compared with values calculated using ash/fuel analyses and sequential extraction to obtain a fuller picture of alkali release in pulverized fuel combustion. 27 refs., 7 figs., 1 tab.

H. Schuermann; P.B. Monkhouse; S. Unterberger; K.R.G. Hein [Universitaet Stuttgart, Stuttgart (Germany). Institut fuer Verfahrenstechnik und Dampfkesselwesen

2007-07-01T23:59:59.000Z

419

Enhanced Elemental Mercury Removal from Coal-fired Flue Gas by Sulfur-chlorine Compounds  

E-Print Network (OSTI)

of Catalysts for Oxidation of Mercury in Flue Gas, Environ.mercury oxidation when the chlorine concentration in flue gas

Miller, Nai-Qiang Yan-Zan Qu Yao Chi Shao-Hua Qiao Ray Dod Shih-Ger Chang Charles

2008-01-01T23:59:59.000Z

420

Advanced coal-fueled gas turbine systems reference system definition update  

Science Conference Proceedings (OSTI)

The objective of the the Direct Coal-Fueled 80 MW Combustion Turbine Program is to establish the technology required for private sector use of an advanced coal-fueled combustion turbine power system. Under this program the technology for a direct coal-fueled 80 MW combustion turbine is to be developed. This unit would be an element in a 207 MW direct coal-fueled combustion turbine combined cycle which includes two combustion turbines, two heat recovery steam generators and a steam turbine. Key to meeting the program objectives is the development of a successful high pressure slagging combustor that burns coal, while removing sulfur, particulates, and corrosive alkali matter from the combustion products. Westinghouse and Textron (formerly AVCO Research Laboratory/Textron) have designed and fabricated a subscale slagging combustor. This slagging combustor, under test since September 1988, has been yielding important experimental data, while having undergone several design iterations.

Not Available

1991-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "gas coal renewables" 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

,,,,,,"Coal Components",,,"Coke",,,"Electricity Components",,,,,,,,,,,,,,"Natural Gas Components",,,"Steam Components"  

U.S. Energy Information Administration (EIA) Indexed Site

2 Relative Standard Errors for Table 7.2;" 2 Relative Standard Errors for Table 7.2;" " Unit: Percents." ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,"Selected Wood and Other Biomass Components" ,,,,,,"Coal Components",,,"Coke",,,"Electricity Components",,,,,,,,,,,,,,"Natural Gas Components",,,"Steam Components" " "," ",,,,,,,,,,,,,"Total",,,,,,,,,,,,,,,,,,,,,,,"Wood Residues",,,," " " "," "," ",,,,,"Bituminous",,,,,,"Electricity","Diesel Fuel",,,,,,"Motor",,,,,,,"Natural Gas",,,"Steam",,,," ",,,"and","Wood-Related","All"

422

,,,,,,"Coal Components",,,"Coke",,,"Electricity Components",,,,,,,,,,,,,,"Natural Gas Components",,,"Steam Components"  

U.S. Energy Information Administration (EIA) Indexed Site

Relative Standard Errors for Table 7.1;" Relative Standard Errors for Table 7.1;" " Unit: Percents." ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,"Selected Wood and Other Biomass Components" ,,,,,,"Coal Components",,,"Coke",,,"Electricity Components",,,,,,,,,,,,,,"Natural Gas Components",,,"Steam Components" " "," ",,,,,,,,,,,,,"Total",,,,,,,,,,,,,,,,,,,,,,,"Wood Residues",,,," " " "," "," ",,,,,"Bituminous",,,,,,"Electricity","Diesel Fuel",,,,,,"Motor",,,,,,,"Natural Gas",,,"Steam",,,," ",,,"and","Wood-Related","All"

423

Hot coal gas desulfurization with manganese-based sorbents. Quarterly report, October--December 1993  

SciTech Connect

The focus of work being performed on Hot Coal Gas Desulfurization at the Morgantown Energy Technology Center is primarily in the use of zinc ferrite and zinc titanate sorbents; however, prior studies indicated that an alternate sorbent, manganese dioxide-containing ore in mixture with alumina (75 wt% ore + 25 wt% Al{sub 2}O{sub 3}) may be a viable alternative to zinc-based sorbents. Manganese, for example, has a lower vapor pressure in the elemental state than zinc hence it is not as likely to undergo depletion from the sorbent surface upon loading and regeneration cycles. Also manganese oxide is less readily reduced to the elemental state than iron hence the range of reduction potentials for oxygen is somewhat greater than for zinc ferrite. In addition, thermodynamic analysis of the manganese-oxygen-sulfur system shows it to be less amenable to sulfation than zinc ferrite. Potential also exists for utilization of manganese at higher temperatures than zinc ferrite or zinc titanate. This Fifth Quarterly Report documents progress in pellet testing via thermogravimetric analysis of pellet formulation FORM4-A of a manganese ore/alumina combination. This formulation, described more fully in the Quarterly Technical Progress Report of October 15, 1993, consists of manganese carbonate combined with alundum. A 2-inch fixed-bed reactor has been fabricated and is now ready for subjecting pellets to cyclic loading and regeneration; however, a minor problem has arisen during the regeneration cycle in that sulfur tends to form and plug the exit tube during the early stage of regeneration. This problem is about to be overcome by increasing the flow rate of air during the regeneration cycle resulting in more oxidizing conditions and hence less tendency for sulfide sulfur (S{sup =}) to oxidize to the intermediate elemental form (S{sup o}) rather than to 4-valent (S{sup +4}).

Hepworth, M.T.; Slimane, R.B.

1994-01-01T23:59:59.000Z

424

ADVANCED FLUE GAS CONDITIONING AS A RETROFIT UPGRADE TO ENHANCE PM COLLECTION FROM COAL-FIRED ELECTRIC UTILITY BOILERS  

Science Conference Proceedings (OSTI)

The U.S. Department of Energy and ADA Environmental Solutions have begun a project to develop commercial flue gas conditioning additives. The objective is to develop conditioning agents that can help improve particulate control performance of smaller or under-sized electrostatic precipitators on utility coal-fired boilers. The new chemicals will be used to control both the electrical resistivity and the adhesion or cohesivity of the flyash. There is a need to provide cost-effective and safer alternatives to traditional flue gas conditioning with SO{sub 3} and ammonia. During the second reporting quarter for this project, design and development is continuing on an electrostatic tensiometer to measure cohesion of flyash layers. A dedicated test fixture to automate flyash electrical resistivity testing is also underway. Ancillary instrumentation to control gas humidification within these test fixtures is also under construction.

Kenneth E. Baldrey

2000-09-01T23:59:59.000Z

425

Coal Tar and Bedrock  

Science Conference Proceedings (OSTI)

The characterization of bedrock groundwater and coal tar impacts is one of the most complicated tasks associated with managing manufactured gas plant (MGP) sites. This report provides an overview of the fate and transport of coal tar in bedrock and the methods available to investigate coal tar at particular sites and discusses how to develop a decision-making framework for coal tar investigations.

2007-02-22T23:59:59.000Z

426

Hard truths: facing the hard truths about energy. Topic Paper No. 18: Coal to liquids and gas  

Science Conference Proceedings (OSTI)

The report presents the issues associated with and the potential of coal to liquids (CTL) and coal to gas (CTG) technologies. The other important outcome from this report is to view and understand the inputs and assumptions from various publications and the range of production estimates from CTG and CTL technology. The examination of the publications demonstrates a large uncertainty for CTL, due to various assumptions from petroleum price to technological abilities. Key assumptions are left unexamined, such as product transportation, labor, equipment availability, and environmental risk. Overall, the published CTL production estimates are small in the total global petroleum market perspective; even in the most optimistic scenario the volume from CTL amounts to only 20% of the U.S. petroleum market in the Southern States Energy Board (SSEB) report. The National Coal Council (NCC) saw a 10% market share, whereas the various Energy Information Administration (EIA) scenarios saw 0% to 6% of the U.S market share. The NCC and SSEB both mentioned the added benefit of using the CO{sub 2} for enhanced oil recovery (EOR). It begins by introducing the process, giving a detailed technological understanding, and then outlining each issue with each report from coal availability to oil price assumptions. The incremental gains from CTL and other technology areas, such as oil shale, could have a significant impact on U.S. energy cost and foreign dependency. The use of coal allows the added benefit of relying on a resource that is domestically more plentiful than petroleum, but this reliance must be carefully balanced with the economics of developing the resource, since CTL facilities can cost more than $1 billion per 10,000 days of production, which implicates the competitiveness of the U.S. economy within the global economy. 33 refs.

NONE

2007-07-18T23:59:59.000Z

427

Renewable Energy  

U.S. Energy Information Administration (EIA)

Renewable energy sources including biomass, hydropower, geothermal, wind, and solar provide 8% of the energy used in the United States.

428

Renewable Energy Requirement Status: 2005  

Science Conference Proceedings (OSTI)

The potential impacts of renewable portfolio standards (RPS) and other requirements are significant for electricity generation, transmission, and distribution companies, especially for those that depend on coal and other fossil fuels to supply the power delivered to their customers. this Technical Update is to update the information presented in the previous EPRI report, Renewable Energy Requirement Status and Compliance Strategies: 2004 (1008374, December 2004). Although the assessment focuses on state ...

2006-03-30T23:59:59.000Z

429

Coal gasification  

Science Conference Proceedings (OSTI)

A standard series of two staged gas generators (GG) has been developed in the United States for producing gas with a combustion heat from 4,700 to 7,600 kilojoules per cubic meter from coal (U). The diameter of the gas generators is from 1.4 to 3.65 meters and the thermal capacity based on purified cold gas is from 12.5 to 89 million kilojoules per hour. Certain standard sized gas generators have undergone experimental industrial tests which showed that it is most expedient to feed the coal into the gas generators pneumatically. This reduces the dimensions of the charging device, makes it possible to use more common grades of structural steels and reduces the cost of the gas. A double valve reliably prevents ejections of the gasification product and promotes the best distribution of the coal in the gas generator. The gas generators may successfully operate on high moisture (up to 36 percent) brown coal. Blasting with oxygen enriched to 38 percent made it possible to produce a gas with a combustion heat of 9,350 kilojoules per cubic meter. This supports a combustion temperature of 1,700C.

Rainey, D.L.

1983-01-01T23:59:59.000Z

430

From Tragedy to Triumph - Rebuilding with Renewable Energy after Disaster, EERE (Fact Sheet)  

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

Science & Technology Facility at the National Renewable Energy Laboratory in Golden, Science & Technology Facility at the National Renewable Energy Laboratory in Golden, Colorado, incorporates a number of advanced energy efficiency and green building concepts. For example, the architecture makes good use of natural light wherever possible, and an automated system dims unnecessary artificial lighting to reduce electricity use. Pat Corkery / PIX15442 From Tragedy to Triumph-Rebuilding with Renewable Energy after Disaster Renewable energy is generated from sources that are "green" and naturally replenished such as sunlight, wind, and geothermal heat. This energy can power, heat, and cool buildings, and can replace traditional sources of fuel (e.g., coal and natural gas) used by utilities. Most utilities are using wind power, but

431

Quantifying the value that energy efficiency and renewable energy provide as a hedge against volatile natural gas prices  

E-Print Network (OSTI)

Technology. Stoffel, F.C. (Xcel Energy). 2001. In the Matternatural gas utilities, Xcel Energy noted that the cost of

Bolinger, Mark; Wiser, Ryan; Bachrach, Devra; Golove, William

2002-01-01T23:59:59.000Z

432

JV Task 124 - Understanding Multi-Interactions of SO3, Mercury, Selenium, and Arsenic in Illinois Coal Flue Gas  

Science Conference Proceedings (OSTI)

This project consisted of pilot-scale combustion testing with a representative Illinois basin coal to explore the multi-interactions of SO{sub 3}, mercury, selenium and arsenic. The parameters investigated for SO{sub 3} and mercury interactions included different flue gas conditions, i.e., temperature, moisture content, and particulate alkali content, both with and without activated carbon injection for mercury control. Measurements were also made to track the transformation of selenium and arsenic partitioning as a function of flue gas temperature through the system. The results from the mercury-SO{sub 3} testing support the concept that SO{sub 3} vapor is the predominant factor that impedes efficient mercury removal with activated carbon in an Illinois coal flue gas, while H{sub 2}SO{sub 4} aerosol has less impact on activated carbon injection performance. Injection of a suitably mobile and reactive additives such as sodium- or calcium-based sorbents was the most effective strategy tested to mitigate the effect of SO{sub 3}. Transformation measurements indicate a significant fraction of selenium was associated with the vapor phase at the electrostatic precipitator inlet temperature. Arsenic was primarily particulate-bound and should be captured effectively with existing particulate control technology.

Ye Zhuang; Christopher Martin; John Pavlish

2009-03-31T23:59:59.000Z

433

Quantifying the value that energy efficiency and renewable energy provide as a hedge against volatile natural gas prices  

E-Print Network (OSTI)

natural gas has become the fuel of choice for new power plantspower from a new plant will not be needed, which can be Unlike natural gas-power plants (Awerbuch 1993, 1994; Kahn & Stoft 1993). Specifically, in the context of natural gas-

Bolinger, Mark; Wiser, Ryan; Bachrach, Devra; Golove, William

2002-01-01T23:59:59.000Z

434

US-India Energy Dialogue: Coal Working Group | Department of Energy  

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

US-India Energy Dialogue: US-India Energy Dialogue: Coal Working Group US-India Energy Dialogue: Coal Working Group On May 31, 2005, then-U.S. Secretary of Energy, Dr. Samuel W. Bodman and Dr. Montek Singh Ahluwalia, Deputy Chairman Planning Commission of India, launched a new Energy Dialogue. The Energy Dialogue builds upon the broad range of existing energy cooperation between India and the United States, as well as develops new avenues of collaboration. The Energy Dialogue includes working groups in the areas of coal, oil and gas, nuclear and renewable resources, electric power generation and energy efficiency. Read the Coal Working Group Work Plan The Coal Working Group is chaired by the U.S. Department of Energy's Office of Fossil Energy, and India's Ministry of Coal. The objective of the CWG

435

Advanced Coal Wind Hybrid: Economic Analysis  

E-Print Network (OSTI)

hybrid combined cycle power plant natural gas combined cyclePower Plants study, Volume 1: Bituminous Coal and Natural Gas

Phadke, Amol

2008-01-01T23:59:59.000Z

436

Selenium Removal by Iron Cementation from a Coal-Fired Power Plant Flue Gas Desulfurization Wastewater in a Continuous Flow System-- a Pilot Study  

Science Conference Proceedings (OSTI)

This technical update describes work funded by the Electric Power Research Institute (EPRI) and performed by MSE Technology Applications, Inc. (MSE) at a coal-fired power plant burning Powder River Basin (PRB) coal (identified in this report as Plant E). This work was based on encouraging results obtained during previous EPRI-funded work on flue gas desulfurization (FGD) wastewater treatability testing by MSE, which focused on selenium removal from a variety of FGD wastewater sources. The results from th...

2009-07-29T23:59:59.000Z

437

Development of a high-performance coal-fired power generating system with pyrolysis gas and char-fired high temperature furnace (HITAF). Volume 1, Final report  

SciTech Connect

A major objective of the coal-fired high performance power systems (HIPPS) program is to achieve significant increases in the thermodynamic efficiency of coal use for electric power generation. Through increased efficiency, all airborne emissions can be decreased, including emissions of carbon dioxide. High Performance power systems as defined for this program are coal-fired, high efficiency systems where the combustion products from coal do not contact the gas turbine. Typically, this type of a system will involve some indirect heating of gas turbine inlet air and then topping combustion with a cleaner fuel. The topping combustion fuel can be natural gas or another relatively clean fuel. Fuel gas derived from coal is an acceptable fuel for the topping combustion. The ultimate goal for HIPPS is to, have a system that has 95 percent of its heat input from coal. Interim systems that have at least 65 percent heat input from coal are acceptable, but these systems are required to have a clear development path to a system that is 95 percent coal-fired. A three phase program has been planned for the development of HIPPS. Phase 1, reported herein, includes the development of a conceptual design for a commercial plant. Technical and economic feasibility have been analysed for this plant. Preliminary R&D on some aspects of the system were also done in Phase 1, and a Research, Development and Test plan was developed for Phase 2. Work in Phase 2 include s the testing and analysis that is required to develop the technology base for a prototype plant. This work includes pilot plant testing at a scale of around 50 MMBtu/hr heat input. The culmination of the Phase 2 effort will be a site-specific design and test plan for a prototype plant. Phase 3 is the construction and testing of this plant.

NONE

1996-02-01T23:59:59.000Z

438

Development of standardized air-blown coal gasifier/gas turbine concepts for future electric power systems  

SciTech Connect

CRS Sirrine (CRSS) is evaluating a novel IGCC process in which gases exiting the gasifier are burned in a gas turbine combustion system. The turbine exhaust gas is used to generate additional power in a conventional steam generator. This results in a significant increase in efficiency. However, the IGCC process requires development of novel approaches to control SO{sub 2} and NO{sub x} emissions and alkali vapors which can damage downstream turbine components. Ammonia is produced from the reaction of coal-bound nitrogen with steam in the reducing zone of any fixed bed coal gasifier. This ammonia can be partially oxidized to NO{sub x} when the product gas is oxidized in a gas turbine combustor. Alkali metals vaporize in the high-temperature combustion zone of the gasifier and laser condense on the surface of small char or ash particles or on cooled metal surfaces. It these alkali-coated materials reach the gas turbine combustor, the alkali will revaporize condense on turbine blades and cause rapid high temperature corrosion. Efficiency reduction will result. PSI Technology Company (PSIT) was contracted by CRSS to evaluate and recommend solutions for NO{sub x} emissions and for alkali metals deposition. Various methods for NO{sub x} emission control and the potential process and economic impacts were evaluated. This included estimates of process performance, heat and mass balances around the combustion and heat transfer units and a preliminary economic evaluation. The potential for alkali metal vaporization and condensation at various points in the system was also estimated. Several control processes and evaluated, including an order of magnitude cost for the control process.

1990-07-01T23:59:59.000Z

439

Gas Permeability of Fractured Sandstone/Coal Samples under Variable Confining Pressure  

E-Print Network (OSTI)

argillite under con?nement: gas and water testing. Phys.Gascoyne, M. , Wuschke, D.M. : Gas migration through water-fractured rock: results of a gas injection test. J.

Liu, Weiqun; Li, Yushou; Wang, Bo

2010-01-01T23:59:59.000Z

440

Comparing the risk profiles of renewable and natural gas electricity contracts: A summary of the California Department of Water Resources contracts  

E-Print Network (OSTI)

make the case for renewable energy based on cost alone. OfThe use of renewable energy can avoid these costs and risks.measures, the cost of renewable energy supply has declined,

Bachrach, Devra; Wiser, Ryan; Bolinger, Mark; Golove, William

2003-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "gas coal renewables" 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

Comparing the risk profiles of renewable and natural gas electricity contracts: A summary of the California Department of Water Resources contracts  

E-Print Network (OSTI)

requirements might be. non-renewable energy. Our analysis ofpercent of the DWR's non-renewable energy is under fixed-45% of the DWR's non-renewable energy under contract)

Bachrach, Devra; Wiser, Ryan; Bolinger, Mark; Golove, William

2003-01-01T23:59:59.000Z

442

Where can I find shale gas and coal bed methane production and ...  

U.S. Energy Information Administration (EIA)

Where is the boundary for state and federal offshore oil and gas production? Which states consume and produce the most natural gas?

443

China rationalizes its renewable energy policy  

Science Conference Proceedings (OSTI)

China's over-reliance on thermal power generation, especially coal-fired power stations, is well-documented. While nuclear power continues as an option to coal, China's strides in renewable energy are unprecedented. Recent amendments to the Renewable Energy Law, first promulgated in 2006, attempt to rationalize the regulatory regime governing wind, solar, hydropower and biomass projects in China, currently fraught with inadequate interconnection and tariff shock issues. (author)

Su, Jack H.; Hui, Simone S.; Tsen, Kevin H.

2010-04-15T23:59:59.000Z

444

Quarterly Coal Report  

Gasoline and Diesel Fuel Update (EIA)

March 2011 DOEEIA-0121 (201004Q) Revised: July 2012 Quarterly Coal Report October - December 2010 March 2011 U.S. Energy Information Administration Office of Oil, Gas, and Coal...

445

Integrated Warm Gas Multicontaminant Cleanup Technologies for Coal-Derived Syngas  

Science Conference Proceedings (OSTI)

One of the key obstacles for the introduction of commercial gasification technology for the production of power with Integrated Gasification Combined Cycle (IGCC) plants or the production of value added chemicals, transportation fuels, and hydrogen has been the cost of these systems. This situation is particularly challenging because the United States has ample coal resources available as raw materials and effective use of these raw materials could help us meet our energy and transportation fuel needs while significantly reducing our need to import oil. One component of the cost of these systems that faces strong challenges for continuous improvement is removing the undesirable components present in the syngas. The need to limit the increase in cost of electricity to oil and natural gas. RTI, with DOE/NETL support, has been developing sorbent technologies that enable capture of trace contaminants and CO{sub 2} at temperatures above 400 °F that achieve better capture performance, lower costs and higher thermal efficiency. This report describes the specific work of sorbent development for mercury (Hg), arsenic (As), selenium (Se), cadmium (Cd), and phosphorous (P) and CO{sub 2} removal. Because the typical concentrations of Hg, As, Se, Cd, and P are less than 10 ppmv, the focus has been on single-use sorbents with sufficient capacity to ensure replacement costs are cost effective. The research in this report describes the development efforts which expand this sorbent development effort to include Se, Cd, and P as well as Hg and As. Additional research has focused on improving removal performance with the goal of achieving effluent concentrations that are suitable for chemical production applications. By contrast, sorbent development for CO{sub 2} capture has focused on regenerable sorbents that capture the CO{sub 2} byproduct at higher CO{sub 2} pressures. Previous research on CO{sub 2} sorbents has demonstrated that the most challenging aspect of developing CO{sub 2} sorbents is regeneration. The research documented in this report investigates options to improve regeneration of the CO{sub 2} capture sorbents. This research includes effort on addressing existing regeneration limitations for sorbents previously developed and new approaches that focus initially on the regeneration performance of the sorbent.

Turk, Brian; Gupta, Raghubir; Sharma, Pradeepkumar; Albritton, Johnny; Jamal, Aqil

2010-09-30T23:59:59.000Z

446

Natural Gas Vehicle and Infrastructure Codes and Standards Chart (Revised) (Fact Sheet), NREL (National Renewable Energy Laboratory)  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Natural Gas Vehicle and Infrastructure Codes and Standards Chart Natural Gas Vehicle and Infrastructure Codes and Standards Chart Many standards development organizations (SDOs) are working to develop codes and standards needed for the utilization of alternative fuel vehicle technologies. This chart shows the SDOs responsible for leading the support and development of key codes and standards for natural gas. Vehicle Safety: Vehicle Fuel Systems: Vehicle Containers: Vehicle Fuel System Components: Dispensing Component Standards: Dispensing Operations: Dispensing Vehicle Interface: Storage Containers: Storage Pressure Relief Devices: Storage System Siting: Storage and Production: Building and Fire Code Requirements: Organization Name Standards Development Areas AGA American Gas Association Materials testing standards API American Petroleum Institute

447

ADVANCED FLUE GAS CONDITIONING AS A RETROFIT UPGRADE TO ENHANCE PM COLLECTION FROM COAL-FIRED ELECTRIC UTILITY BOILERS  

SciTech Connect

The U.S. Department of Energy and ADA Environmental Solutions are engaged in a project to develop commercial flue gas conditioning additives. The objective is to develop conditioning agents that can help improve particulate control performance of smaller or under-sized electrostatic precipitators on utility coal-fired boilers. The new chemicals will be used to control both the electrical resistivity and the adhesion or cohesivity of the fly ash. There is a need to provide cost-effective and safer alternatives to traditional flue gas conditioning with SO{sub 3} and ammonia. During this reporting quarter, progress was made in obtaining an industry partner for a long-term demonstration and in technology transfer activities. Engineering and equipment procurement activities related to the long-term demonstration were also completed.

Kenneth E. Baldrey

2001-10-01T23:59:59.000Z

448

Evaluation of BOC'S Lotox Process for the Oxidation of Elemental Mercury in Flue Gas from a Coal-Fired Boiler  

SciTech Connect

Linde's Low Temperature Oxidation (LoTOx{trademark}) process has been demonstrated successfully to remove more than 90% of the NOx emitted from coal-fired boilers. Preliminary findings have shown that the LoTOx{trademark} process can be as effective for mercury emissions control as well. In the LoTOx{trademark} system, ozone is injected into a reaction duct, where NO and NO{sub 2} in the flue gas are selectively oxidized at relatively low temperatures and converted to higher nitrogen oxides, which are highly water soluble. Elemental mercury in the flue gas also reacts with ozone to form oxidized mercury, which unlike elemental mercury is water-soluble. Nitrogen oxides and oxidized mercury in the reaction duct and residual ozone, if any, are effectively removed in a wet scrubber. Thus, LoTOx{trademark} appears to be a viable technology for multi-pollutant emission control. To prove the feasibility of mercury oxidation with ozone in support of marketing LoTOx{trademark} for multi-pollutant emission control, Linde has performed a series of bench-scale tests with simulated flue gas streams. However, in order to enable Linde to evaluate the performance of the process with a flue gas stream that is more representative of a coal-fired boiler; one of Linde's bench-scale LoTOx{trademark} units was installed at WRI's combustion test facility (CTF), where a slipstream of flue gas from the CTF was treated. The degree of mercury and NOx oxidation taking place in the LoTOx{trademark} unit was quantified as a function of ozone injection rates, reactor temperatures, residence time, and ranks of coals. The overall conclusions from these tests are: (1) over 80% reduction in elemental mercury and over 90% reduction of NOx can be achieved with an O{sub 3}/NO{sub X} molar ratio of less than two, (2) in most of the cases, a lower reactor temperature is preferred over a higher temperature due to ozone dissociation, however, the combination of both low residence time and high temperature proved to be effective in the oxidation of both NOx and elemental mercury, and (3) higher residence time, lower temperature, and higher molar ratio of O{sub 3}/NOx contributed to the highest elemental mercury and NOx reductions.

Khalid Omar

2008-04-30T23:59:59.000Z

449

Operating Experience, Risk, and Market Assessment of Clean Coal Technologies: 2007  

Science Conference Proceedings (OSTI)

Achieving CO2 emission control while keeping electricity prices competitive and sustaining economic growth presents society with unprecedented economic and technical challenges. In the absence of effective conservation measures, renewables and gas-fired plants are increasingly used to generate power; but EPRI's MERGE model indicates that this approach is likely to lead to increased electricity and gas prices and suppress economic growth. Continued use of coal with CO2 capture and storage (CCS) is needed,...

2007-12-12T23:59:59.000Z

450

Electrochemical, Structural and Surface Characterization of Nickel/Zirconia Solid Oxide Fuel Cell Anodes in Coal Gas Containing Antimony  

Science Conference Proceedings (OSTI)

The interaction of antimony with the nickel-zirconia solid oxide fuel cell (SOFC) anode has been investigated. Tests with both anode-supported and electrolyte-supported button cells were performed at 700 and 800oC in synthetic coal gas containing 10 ppb to 9 ppm antimony. Minor performance loss was observed immediately after Sb introduction to coal gas resulting in ca. 5 % power output drop. While no further degradation was observed during the following several hundred hours of testing, cells abruptly and irreversibly failed after 800-1500 hours depending on Sb concentration and test temperature. Antimony was found to interact strongly with nickel and result in extensive alteration phase formation, consistent with expectations based on thermodynamic properties. Nickel antimonide phases, NiSb and Ni5Sb2, were partially coalesced into large grains and eventually affected electronic percolation through the anode support. Initial degradation was attributed to diffusion of antimony to the active anode/electrolyte interface to form an adsorption layer.

Marina, Olga A.; Pederson, Larry R.; Coyle, Christopher A.; Thomsen, Edwin C.; Nachimuthu, Ponnusamy; Edwards, Danny J.

2011-02-27T23:59:59.000Z

451

User-Friendly Tool to Calculate Economic Impacts from Coal, Natural Gas, and Wind: The Expanded Jobs and Economic Development Impact Model (JEDI II); Preprint  

DOE Green Energy (OSTI)

In this paper we examine the impacts of building new coal, gas, or wind plants in three states: Colorado, Michigan, and Virginia. Our findings indicate that local/state economic impacts are directly related to the availability and utilization of local industries and services to build and operate the power plant. For gas and coal plants, the economic benefit depends significantly on whether the fuel is obtained from within the state, out of state, or some combination. We also find that the taxes generated by power plants can have a significant impact on local economies via increased expenditures on public goods.

Tegen, S.; Goldberg, M.; Milligan, M.

2006-06-01T23:59:59.000Z

452

High Conversion of Coal to Transportation Fuels for the Future With Low HC Gas Production  

DOE Green Energy (OSTI)

An announced objective of the Department of Energy in funding this work, and other current research in coal liquefaction, is to produce a synthetic crude from coal at a cost lower than $30.00 per barrel (Task A). A second objective, reflecting a recent change in direction in the synthetic fuels effort of DOE, is to produce a fuel which is low in aromatics, yet of sufficiently high octane number for use in the gasoline- burning transportation vehicles of today. To meet this second objective, research was proposed, and funding awarded, for conversion of the highly-aromatic liquid product from coal conversion to a product high in isoparaffins, which compounds in the gasoline range exhibit a high octane number (Task B).

Alex G. Oblad; Wendell H. Wiser

1996-07-01T23:59:59.000Z

453

Renewable Energy  

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

Learn how the Energy Department's investments in clean, renewable energy technologies -- including wind, solar and geothermal sources -- are helping strengthen the American economy.

454

Renewable Polymers  

Science Conference Proceedings (OSTI)

... the amounts of natural resources and energy they consume and the wastes they produce. However, the adoption of renewable polymeric materials ...

2012-10-02T23:59:59.000Z

455

Environmental Energy Technologies Division Energy Analysis Department Renewable Energy  

E-Print Network (OSTI)

Environmental Energy Technologies Division · Energy Analysis Department Renewable Energy-price contracts for renewable energy 3) What impact do renewables have on gas prices? 4) What impact do high gas prices have on renewables? #12;Environmental Energy Technologies Division · Energy Analysis Department

456

NETL: Coal & Coal Biomass to Liquids - Alternate Hydrogen Production  

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

Deepwater Technology Enhanced Oil Recovery Gas Hydrates Natural Gas Resources Contacts Coal & Power Systems Major Demonstrations Innovations for Existing Plants Gasification...

457

NETL: Coal & Coal Biomass to Liquids - Hydrogen and Clean Fuels...  

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

Deepwater Technology Enhanced Oil Recovery Gas Hydrates Natural Gas Resources Contacts Coal & Power Systems Major Demonstrations Innovations for Existing Plants Gasification...

458

NETL: Coal & Coal Biomass to Liquids - Systems Studies  

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

Deepwater Technology Enhanced Oil Recovery Gas Hydrates Natural Gas Resources Contacts Coal & Power Systems Major Demonstrations Innovations for Existing Plants Gasification...

459

NETL: Coal & Coal Biomass to Liquids - Reference Shelf  

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

Deepwater Technology Enhanced Oil Recovery Gas Hydrates Natural Gas Resources Contacts Coal & Power Systems Major Demonstrations Innovations for Existing Plants Gasification...

460

PALLADIUM/COPPER ALLOY COMPOSITE MEMBRANES FOR HIGH TEMPERATURE HYDROGEN SEPARATION FROM COAL-DERIVED GAS STREAMS  

DOE Green Energy (OSTI)

For hydrogen from coal gasification to be used economically, processing approaches that produce a high purity gas must be developed. Palladium and its alloys, nickel, platinum and the metals in Groups 3 to 5 of the Periodic Table are all permeable to hydrogen. Hydrogen permeable metal membranes made of palladium and its alloys are the most widely studied due to their high hydrogen permeability, chemical compatibility with many hydrocarbon containing gas streams, and infinite hydrogen selectivity. Our Pd composite membranes have demonstrated stable operation at 450 C for over 70 days. Coal derived synthesis gas will contain up to 15000 ppm H{sub 2}S as well as CO, CO{sub 2}, N{sub 2} and other gases. Highly selectivity membranes are necessary to reduce the H{sub 2}S concentration to acceptable levels for solid oxide and other fuel cell systems. Pure Pd-membranes are poisoned by sulfur, and suffer from mechanical problems caused by thermal cycling and hydrogen embrittlement. Recent advances have shown that Pd-Cu composite membranes are not susceptible to the mechanical, embrittlement, and poisoning problems that have prevented widespread industrial use of Pd for high temperature H{sub 2} separation. These membranes consist of a thin ({le} 5 {micro}m) film of metal deposited on the inner surface of a porous metal or ceramic tube. With support from this DOE Grant, we have fabricated thin, high flux Pd-Cu alloy composite membranes using a sequential electroless plating approach. Thin, Pd{sub 60}Cu{sub 40} films exhibit a hydrogen flux more than ten times larger than commercial polymer membranes for H{sub 2} separation, resist poisoning by H{sub 2}S and other sulfur compounds typical of coal gas, and exceed the DOE Fossil Energy target hydrogen flux of 80 ml/cm{sup 2} {center_dot} min = 0.6 mol/m{sup 2} {center_dot} s for a feed pressure of 40 psig. Similar Pd-membranes have been operated at temperatures as high as 750 C. We have developed practical electroless plating procedures for fabrication of thin Pd-Cu composite membranes at any scale.

J. Douglas Way

2003-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "gas coal renewables" 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.


461

Dry piston coal feeder  

SciTech Connect

This invention provides a solids feeder for feeding dry coal to a pressurized gasifier at elevated temperatures substantially without losing gas from the gasifier by providing a lock having a double-acting piston that feeds the coals into the gasifier, traps the gas from escaping, and expels the trapped gas back into the gasifier.

Hathaway, Thomas J. (Belle Meade, NJ); Bell, Jr., Harold S. (Madison, NJ)

1979-01-01T23:59:59.000Z

462

Renewable Energy and Efficiency Modeling Analysis Partnership: An Analysis of How Different Energy Models Addressed a Common High Renewable Energy Penetration Scenario in 2025  

E-Print Network (OSTI)

between oil, gas and coal prices. • Modified representationEIA data for fuel prices (gas, coal, nuclear, oil). o Ifand the elasticity of coal prices for underground/surface

Blair, N.

2010-01-01T23:59:59.000Z

463

Word Pro - Untitled1  

U.S. Energy Information Administration (EIA) Indexed Site

Quadrillion Btu Natural Gas Electrical Losses Electrical Losses Electrical Losses Renewable Energy Renewable Energy Coal Renewable Energy Coal Petroleum Electricity...

464

Impact of supplemental firing of tire-derived fuel (TDF) on mercury species and mercury capture with the advanced hybrid filter in a western subbituminous coal flue gas  

Science Conference Proceedings (OSTI)

Pilot-scale experimental studies were carried out to evaluate the impacts of cofiring tire-derived fuel and a western subbituminous coal on mercury species in flue gas. Mercury samples were collected at the inlet and outlet of the Advanced Hybrid filter to determine mercury concentrations in the flue gas with and without TDF cofiring, respectively. Cofiring of TDF with a subbituminous coal had a significant effect on mercury speciation in the flue gas. With 100% coal firing, there was only 16.8% oxidized mercury in the flue gas compared to 47.7% when 5% TDF (mass basis) was fired and 84.8% when 10% TDF was cofired. The significantly enhanced mercury oxidation may be the result of additional homogeneous gas reactions between Hg{sup 0} and the reactive chlorine generated in the TDF-cofiring flue gas and the in situ improved reactivity of unburned carbon in ash by the reactive chlorine species. Although the cofiring of TDF demonstrated limited improvement on mercury-emission control with the Advanced Hybrid filter, it proved to be a very cost-effective mercury control approach for power plants equipped with wet or dry flue gas desulfurization (FGD) systems because of the enhanced mercury oxidation. 15 refs., 4 figs., 4 tabs.

Ye Zhuang; Stanley J. Miller [University of North Dakota, Grand Forks, ND (United States). Energy & Environmental Research Center

2006-05-15T23:59:59.000Z

465

Effects of Ceric Oxide Coatings on Materials Performance of 430 Steel in Coal Synthetc Gas  

SciTech Connect

The surfaces of low silicon and aluminum 430 stainless steel (UNS 43000) coupons with and without ceria (CeO2) surface treatment were investigated after exposure to simulated coal syngas based fuel at 800 C. The results indicate a different mechanism of carburization for the ceria treated steel than that for the untreated steel.

Ziomek-Moroz, M. Jablonski, P

2011-12-21T23:59:59.000Z

466

NETL: Clean Coal Power Initiative  

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

Deepwater Technology Enhanced Oil Recovery Gas Hydrates Natural Gas Resources Contacts Coal & Power Systems Major Demonstrations Innovations for Existing Plants Gasification...