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Note: This page contains sample records for the topic "bitu subbitu lignite" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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1

Pelletizing lignite  

DOE Patents [OSTI]

Lignite is formed into high strength pellets having a calorific value of at least 9,500 Btu/lb by blending a sufficient amount of an aqueous base bituminous emulsion with finely-divided raw lignite containing its inherent moisture to form a moistened green mixture containing at least 3 weight % of the bituminous material, based on the total dry weight of the solids, pelletizing the green mixture into discrete green pellets of a predetermined average diameter and drying the green pellets to a predetermined moisture content, preferrably no less than about 5 weight %. Lignite char and mixture of raw lignite and lignite char can be formed into high strength pellets in the same general manner.

Goksel, Mehmet A. (Houghton, MI)

1983-11-01T23:59:59.000Z

2

Microbial solubilization of lignites  

Science Journals Connector (OSTI)

Biological solubilization and subsequent gasification of lignite samples from three of the largest reserves in this country, which are also characterized by high sulphur contents and low calorific values, were investigated in this project. Several white-rot fungi were screened for their ability to solubilize lignites and Phanerochaete chrysosporium was found to depolymerize Elbistan lignites with 60% efficiency. Acetate served perfectly as the primary carbon source. Whereas, Çan lignites could be depolymerized only after lengthy pre-treatment with 8N HNO3 while Beypazari lignites were completely inert to biological attack. Gasification tests with the solubilize material revealed 21% energy recovery through gaseous methane product.

Celal F Gokcay; Nazif Kolankaya; Filiz B Dilek

2001-01-01T23:59:59.000Z

3

Lignite oxidative desulphurization  

Science Journals Connector (OSTI)

The coal is a feedstock for the production of 30.3 % of primary energy (hard coal – 28.5 % and lignite – 1.8 %) and 42 % ... Such tendency is caused by the considerable coal reserves exceeding other reserves of n...

Volodymyr Gunka; Serhiy Pyshyev

2014-03-01T23:59:59.000Z

4

Lignite Fuel Enhancement  

SciTech Connect (OSTI)

This 11th quarterly Technical Progress Report for the Lignite Fuel Enhancement Project summarizes activities from January 1st through March 31st of 2007. It summarizes the completion of the Prototype testing activity and initial full-scale dryer design, Budget Period 2 activity during that time period. The Design Team completed process design and layouts of air, water, and coal systems. Heyl-Patterson completed dryer drawings and has sent RFPs to several fabricators for build and assembly. Several meetings were held with Barr engineers to finalize arrangement of the drying, air jig, and coal handling systems. Honeywell held meetings do discuss the control system logic and hardware location. By the end of March we had processed nearly 300,000 tons of lignite through the dryer. Outage preparation maintenance activities on a coal transfer hopper restricted operation of the dryer in February and March. The Outage began March 17th. We will not dry coal again until early May when the Outage on Unit No.2 completes. The Budget Period 1 (Phase 1) final report was submitted this quarter. Comments were received from NETL and are being reviewed. The Phase 2 Project Management Plan was submitted to NETL in January 2007. This deliverable also included the Financing Plan. An application for R&D 100 award was submitted in February. The project received an award from the Minnesota Professional Engineering Society's Seven Wonders of Engineering Award and Minnesota ACEC Grand Award in January. To further summarize, the focus this quarter has been on finalizing commercial design and the layout of four dryers behind each Unit. The modification to the coal handling facilities at Coal Creek and incorporation of air jigs to further beneficiate the segregated material the dryers will reject 20 to 30 % of the mercury and sulfur is segregated however this modification will recover the carbon in that stream.

Charles Bullinger

2007-03-31T23:59:59.000Z

5

Lignite Fuel Enhancement  

SciTech Connect (OSTI)

The Design Team continues to conference this quarter albeit not as often. Primary focus this quarter is the continued procurement of material, receiving, and construction/installation. Phase 1 extension recommendation, and subsequent new project estimate. Forms 424 and 4600 were submitted to Ms. Zysk. The NETL technology team subsequently agreed that the increase is justified and made their recommendation to DOE HQ. All major mechanical equipment was delivered this quarter. Three hot water in-bed coils are all that remains for delivery. Two of the five are installed above the dryer air distribution bed. The dryer, baghouse, bucket elevator, control room, exhaust fan, process ductwork, and piping have all been installed. The mezzanine level over the inlet ductwork for access to the dryer was installed. Instrumentation was delivered and locations were identified. Cable is being pulled and connections made from the Control Room to the Motor Control Center. ''Emergency Stop'' equipment logic conditions were discussed and finalized. The functional description was competed and reviewed with Honeywell Controls. Piping & Instrument diagrams are completed. Some electrical schematics have been delivered for equipment south of Q-line. Dry & Wet coal conveyors are not completed. The exhaust chimney was installed. An Open House and ribbon cutting took place on August 9th. GRE project manager gave a presentation of the technology. Joe Strakey, NETL, also spoke. The Open House was attended by Governor Hoevon and Senator Conrad who also spoke about Clean Coal and helped kick-off Blue Flint ethanol and a potential Liquefaction plant. The deign team met the following day to discuss test plan and progress update. Headwaters Energy Incorporated also attended the Open House. A meeting was conducted with them to begin planning for the marketing and finalize our memorandum of understanding. Headwaters still plans to contact all US lignite plants and all bituminous plants who have switched to PRB. Major pieces of equipment received this quarter included the Dryer, Exhaust Fan, additional duct work, and control cabinets.

Charles Bullinger

2005-10-03T23:59:59.000Z

6

Pyrolysis of Hailar lignite in an autogenerated steam agent  

Science Journals Connector (OSTI)

Lignite is an abundant and relatively inexpensive resource...1...]. China has about 211.8 billion tons-lignite reserve, in which ~200 billion tons are...2, 3]. The characteristics of lignite include low carbon co...

Haojie Gao; Yuezhao Zhu; Feng Fu; Hao Wu…

2014-08-01T23:59:59.000Z

7

A novel lignite pre-drying system with low-grade heat integration for modern lignite power plants  

Science Journals Connector (OSTI)

Lignite accounts for 40 % of the global coal reserves, and its long term future is predicated...1]. In China, where lignite resources exceed 130 billion tons, it is...2]. As the low-rank coal, lignite generally f...

Cheng Xu; Gang Xu; Yu Han; Feifei Liang; Yaxiong Fang…

2014-11-01T23:59:59.000Z

8

ccpi-lignite | netl.doe.gov  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

1 Industrial Carbon Capture and Storage Clean Coal Power Initiative Power Plant Improvement Initiative Clean Coal Technology Demonstration Program FutureGen Lignite Fuel...

9

Lignite-based nitrogenous fertilizers  

SciTech Connect (OSTI)

A sample of lignite from Elbistan was oxidized by nitric acid in two stages, using relatively dilute acid in the first stage and concentrated acid in the second stage, and then the oxidized product was ammoniated so that a coal-based fertilizer could be produced. The experiments of all the stages were designed by a 1/2 X full factorial design. It was observed that base exchange capacity and nitrogen content of coal-based fertilizers produced in this work were as good as or better than those obtained by other investigators.

Baris, H.; Dincer, S.

1983-01-01T23:59:59.000Z

10

COFIRING BIOMASS WITH LIGNITE COAL  

SciTech Connect (OSTI)

The University of North Dakota Energy & Environmental Research Center, in support of the U.S. Department of Energy's (DOE) biomass cofiring program, completed a Phase 1 feasibility study investigating aspects of cofiring lignite coal with biomass relative to utility-scale systems, specifically focusing on a small stoker system located at the North Dakota State Penitentiary (NDSP) in Bismarck, North Dakota. A complete biomass resource assessment was completed, the stoker was redesigned to accept biomass, fuel characterization and fireside modeling tests were performed, and an engineering economic analysis was completed. In general, municipal wood residue was found to be the most viable fuel choice, and the modeling showed that fireside problems would be minimal. Experimental ash deposits from firing 50% biomass were found to be weaker and more friable compared to baseline lignite coal. Experimental sulfur and NO{sub x} emissions were reduced by up to 46%. The direct costs savings to NDSP, from cogeneration and fuel saving, results in a 15- to 20-year payback on a $1,680,000 investment, while the total benefits to the greater community would include reduced landfill burden, alleviation of fees for disposal by local businesses, and additional jobs created both for the stoker system as well as from the savings spread throughout the community.

Darren D. Schmidt

2002-01-01T23:59:59.000Z

11

Study on Combustion Characteristics of Lignite in a CFB Boiler  

Science Journals Connector (OSTI)

The shortage of coal promotes the lignite utility in power plant because of the rapid economy development recently. However, lignite is high in moisture content as well as volatile content and low in calorific va...

J. Leng; T. S. Zou; J. X. Wu; C. Jiang…

2010-01-01T23:59:59.000Z

12

Mitsubishi FGD plants for lignite fired boilers  

SciTech Connect (OSTI)

In order to respond to the increasing electric energy demand for sustaining economic growth, construction of coal-fired thermal power plants worldwide is indispensable. As a countermeasure for environmental pollution which otherwise may reach a serious proportion from the operation of these plants, construction of flue gas desulfurization (FGD) plants is being promoted. Among these power stations where lignite fuel is burnt, the FGD plants concerned have to be designed to cope with high gas volume and SO{sub x} concentration as well as violent fluctuations in their values caused by such features of lignite as high sulfur content, low calorific volume, and unstable properties. Mitsubishi Heavy Industries (MHI) has received construction awards for a total of seven (7) FGD plants for lignite-fired boilers in succession starting from that for CEZ as, Czech Republic followed by those for EGAT, Thailand in 1993. All these plants are presently operating satisfactorily since successful completion of their performance tests in 1996. Further, a construction award of three (3) more FGD plants for lignite-fired boilers was received from ENDESA (Spain) in 1995 which are now being outfitted and scheduled to start commercial operation in 1998. In this paper, the authors discuss the outline design of FGD plants for lignite-fired boilers based on experience of FGD plants constructed since 1970 for heavy oil--as well as black coal-fired boilers, together with items confirmed from the operation and design guideline hereafter.

Kotake, Shinichiro; Okazoe, Kiyoshi; Iwashita, Koichiro; Yajima, Satoru

1998-07-01T23:59:59.000Z

13

Properties of Upgraded Shengli Lignite and Its Behavior for Gasification  

Science Journals Connector (OSTI)

Low-rank coals (LRCs, i.e., brown coal and lignite) have an estimated proportion of 45% of the world’s coal reserves and constitute a significant resource for both energy and chemical feedstocks. ... (10)Figure 15 shows the calculating results of reactivity parameters (Rmax, Rave, and R) for SL lignite and different upgraded lignites obtained by isothermal upgrading. ...

Xianjun Yang; Cheng Zhang; Peng Tan; Tao Yang; Qingyan Fang; Gang Chen

2013-10-29T23:59:59.000Z

14

Radon concentrations in three underground lignite mines in Turkey  

Science Journals Connector (OSTI)

......being operated by the Aegean Lignite Enterprise (Ege Linyitleri...determined in three underground lignite mines, namely Tuncbilek...which is the main state body of lignite coal production, processing...of TKi. GLi Tuncbilek coal reserve, which is located on the mid-west......

S. Çile; N. Altinsoy; N. Çelebi

2010-01-01T23:59:59.000Z

15

A study of pyrolysis of Texas lignites  

E-Print Network [OSTI]

Heating Values. 15 8 Tar Composition g Coal Properties, . 10 Theoretical Gasification Results 11 Chromatograph Program. Pa&ac 17 26 27 28 44 46 47 48 50 51 56 INTRODUCTION As national interest develops 1n fuels other than oil and natural... gasification of the lignite in-situ. The Soviet Union has studied this method and has built several facilities to burn lignite underground. The gases produced from this process are used to prov1de power for a steel m111 in the Urals. At various times 2...

Clark, Robert A

2012-06-07T23:59:59.000Z

16

Trace element analysis of Texas lignite  

E-Print Network [OSTI]

or in the planning stages, Near surface lignite re- sources are estimated to be 21 billion metric tons in Texas, while deep basin reserves are estimated at 31 billion metric tons. Near (3] surface reserves alone could fulfill Texas' electrical needs for 100 years... or in the planning stages, Near surface lignite re- sources are estimated to be 21 billion metric tons in Texas, while deep basin reserves are estimated at 31 billion metric tons. Near (3] surface reserves alone could fulfill Texas' electrical needs for 100 years...

Mahar, Sean

2012-06-07T23:59:59.000Z

17

Improving the technology of creating water-coal fuel from lignites  

SciTech Connect (OSTI)

This paper describes the preparation of coal-water fuel slurries from lignite. The heat of combustion as related to the preparation of the lignite was investigated. The hydrobarothermal processing of suspensions of lignites was studied in autoclaves.

Gorlov, E.G.; Golovin, G.S.; Zotova, O.V. [Rossiiskaya Akadeiya, Nauk (Russian Federation)

1994-12-31T23:59:59.000Z

18

Microsoft Word - LB-Lignite.doc  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Name Organization E-Mail Darin Damiani, U.S. Department of Energy, Darin.Damiani@netl.doe.gov Principal Investigator Edward Steadman Field Test Information: Field Test Name Lignite in North Dakota Field Validation Test Test Location Section 36-T159N-R90W in Burke County, North Dakota Amount and Source of CO 2 Tons Less than 500 tons for the project Source Commercial source - Praxair Flatland Exploration Company, subsidiary of Fischer Oil and Gas ND State Land Department Eagle Operating, Inc. Schlumberger Field Test Partners (Primary Sponsors) Praxair Summary of Field Test Site and Operations: CO 2 in an Unminable Lignite Seam - The site for the pilot-scale CO 2 sequestration-enhanced coalbed methane (ECBM) project operated by the Energy & Environmental Research Center is

19

A study of uranium in South Texas lignite  

E-Print Network [OSTI]

. First, a large proven reserve of lignites is known to exist, Secondly, lignites contain a high percentage of water, so that transportation over any distance is not cost efficient. Thus, it must be burned near the mine, and this is easily done.... First, a large proven reserve of lignites is known to exist, Secondly, lignites contain a high percentage of water, so that transportation over any distance is not cost efficient. Thus, it must be burned near the mine, and this is easily done...

Ilger, Wayne Arthur

2012-06-07T23:59:59.000Z

20

APP, a new binder for briquetting lignites  

Science Journals Connector (OSTI)

Turkey has considerable lignite reserves that are mainly used as domestic fuel without processing. The lignite weathers and degrades easily and much is lost as dust before it reaches the consumer; furthermore, in combustion fine particles can cause air pollution. Since briquetting can eliminate many of these existing problems, it is of special importance. Binderless briquetting is always preferred when possible, since it is less complicated and less expensive, but Turkish lignites usually require a binder to obtain reasonable briquettes and various binders can be used for this purpose. In this work, atactic polypropylene (APP), a by-product of the polypropylene (PP) plant of Petkim Petrochemicals A.S. and emulsions of partially oxidized APP prepared by the research centre of the company, were used as binders, with different types of briquetting techniques. Studies on a laboratory scale were carried out to determine optimum parameters of briquetting; binder content, water content, pressure and temperature of heat treatment. Shatter and water resistance tests were carried out on briquettes obtained under different conditions. APP appears to have many advantages, and none of the disadvantages of other commercial binders such as tar, bitumen, molasses, sulphide liquor and clay. Furthermore, unlike other plastics that cause difficulties in briquetting and have high manufacturing costs, APP, particularly in emulsion, can easily be used as a binder and is relatively cheap. However, a production unit would be required to prepare the relevant modified APP emulsion for its extended usage.

O. Orhan Kural; Tunc Savasci; Sinasi Eskikaya

1989-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "bitu subbitu lignite" 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

Preserved lignin structures in Miocene-aged lignite lithotypes, Bulgaria  

E-Print Network [OSTI]

Preserved lignin structures in Miocene-aged lignite lithotypes, Bulgaria M. Stefanova, O. Maman, B, Orleans Cedex 2, France Abstract Contents of preserved lignin structures in Miocene-aged lignite lithotypes were determined. Phenol aldehydes, ketones and acids released from lignin by CuO oxidative

Paris-Sud XI, Université de

22

Two and three dimensional analysis of a slope failure in a lignite mine  

Science Journals Connector (OSTI)

With about 9.3 billion tons of reserve, lignite is a major source for energy production in Turkey. The Afsin-Elbistan lignite basin, containing 47% of the overall lignite reserve in Turkey, lies in the Afsin and Elbistan districts as a part of Kahramanmaras. ... Keywords: Lignite mine, Numerical modeling, Slope failures, Slope stability analysis

Levent Tutluoglu; Ibrahim Ferid ÖGe; Celal Karpuz

2011-02-01T23:59:59.000Z

23

Effect of Demineralization on Product Yield and Composition at Isothermal Pyrolysis of Eynez Lignites  

Science Journals Connector (OSTI)

Turkey has approximately 0.85% of the world’s lignite reserves. ... Turkey, especially in the Tuncbilek and Soma regions, has an estimated reserve of 8.4 billion tones. ... The effects of the treatment on certain structural components of the lignites varied from lignite to lignite. ...

Murat Sert; Levent Ballice; Mithat Yu?ksel; Mehmet Sag?lam

2011-07-28T23:59:59.000Z

24

Hydrogeology of a reclaimed Central Texas lignite mine  

E-Print Network [OSTI]

). Geographically, these occur in relatively long thin strips referred to as the lignite belt (fig, 1). Exploration has extended through this entire area, and most of the 1, 000, 000 acres, where known shallow lignite reserves are present, have already been... in Texas (after Kaiser, 1974). suggests that large areas of Texas will be affected by surface mining. Eighty percent of the surface mineable lignite reserves occur in the Wilcox Group, part of a major aquifer system in I'exas (fig. 2). In order...

Pepper, Gail Louise

2012-06-07T23:59:59.000Z

25

Geotechnical characterization of lignite-bearing horizons in the Afsin–Elbistan lignite basin, SE Turkey  

Science Journals Connector (OSTI)

The Afsin–Elbistan lignite deposit, with its 3.4 billion metric tons of reserves, is the biggest lignite basin and one of the most important resources for electrical energy production in Turkey. Kislakoy mining field was selected as the first opencast mine to feed four power station blocks of 300 MW each. Slope instability has been a continuing problem in the Kislakoy opencast mine. Particularly complex failures along a noncircular failure surface appearing at the final slope stage and covering large areas in the mine increase the importance of slope stability. This study outlines the geotechnical characteristics of the lignite-bearing horizons and describes the causes and mechanisms of slope instabilities, which threaten the safety of the mine. Quantitative X-ray diffraction (XRD) analyses were carried out using an interactive data processing system (SIROQUANT™) based on Rietveld interpretation methods. Parametric slope stability analysis and backanalysis were carried out for the failure that occurred at the northwestern final slope stage of the mine. The Spencer–Wright limiting state equilibrium method was used in order to determine with confidence the most representative values of regional shear strength parameters, to explain the failure mechanism, and to assess the conditions at the time of failure. In the analysis, phreatic and piezometric surfaces were considered. Site observations and numerous backanalyses of the slope failure reveal that a compound slide occurred where gyttja (contact zone) layers rest directly on the lignite. Gyttja (contact zone) contains the weakest material within the system. The analysis showed that the main cause of the northwestern slope instability was the presence of the groundwater flow within a Quaternary aquifer (through buried valleys), reducing the effective shear strength of the slope materials. It is also noted from backanalysis that the gyttja (contact zone) layer presents a shear strength at, or approaching, the residual value at the time of failure.

Suphi Ural; Ferat Yuksel

2004-01-01T23:59:59.000Z

26

Ground Water Basin Management at the Neyveli Lignite Mines  

Science Journals Connector (OSTI)

The Neyveli lignite mines of India contain large reserves and represent a unique mining venture in...2...hydrogeological basin in which these mines lie contain multiple aquifers under hydrostatic pressure. There ...

V. Ravi Kumar; S. N. Sahay; N. Periasamy; S. Shiv Prasad…

2010-04-01T23:59:59.000Z

27

Size Dependence of the Drying Characteristics of Single Lignite Particles in Superheated Steam  

Science Journals Connector (OSTI)

Lignite, or brown coal, is the lowest ... accounts for 23 pct of the proven recoverable reserves of all coal.[1...] Because of its high moisture content, which makes the cost of transporting the raw lignite high,...

Tsuyoshi Kiriyama; Hideaki Sasaki…

2014-11-01T23:59:59.000Z

28

Fusibility Characteristics of Residual Ash from Lignite Fluidized-Bed Gasification To Understand Its Formation  

Science Journals Connector (OSTI)

Lignite is an abundant resource, which accounts for approximately 40% of global coal reserves. ... The effects of leaching and floatation on the ash fusion temperatures of three selected lignites ...

Feng-hai Li; Jie-jie Huang; Yi-tian Fang; Quan-run Liu

2012-06-28T23:59:59.000Z

29

The washability of lignites for clay removal  

SciTech Connect (OSTI)

In the washability research of the Seyitomer Lignites (Kutahya-Turkey), with lower calorific value (1,863 kcal/kg) and high ash content (51.91%), by heavy medium separation, it was found out that middling clay in the coal had an effect to change the medium density. To prevent this problem, a trommel sieve with 18 and 5 mm aperture diameter was designed, and the clay in the coal was tried to be removed using it before the coal was released to heavy medium. Following that, the obtained coal in -100 + 18 mm and -18 + 5 mm fractions was subjected to sink and float test having 1.4 gcm{sup -3} and 1.7 gcm{sup -3} medium densities (-5 mm fraction will be evaluated in a separate work). Depending on the raw coal, with the floating of -100 + 18 mm and -18 + 5 mm size fraction in 1.4 gcm{sup -3} medium density, clean coal with 60.10% combustible matter recovery, 19.12% ash, and 3,150 kcal/kg was obtained. Also floating of the samples sinking in 1.4 gcm{sup -3} in the medium density (1.7 gcm{sup -3}), middling with 18.70% combustible matter recovery, 41.93% ash, 2,150 kcal/kg, and tailing having 78.31% ash were obtained.

Oteyaka, B.; Yamik, A.; Ucar, A.; Sahbaz, O.; Demir, U. [Dumlupinar University, Kutahya (Turkey). Dept. of Mining Engineering

2008-07-01T23:59:59.000Z

30

Hydrogeology of a proposed surface lignite mine, southwestern Harrison County, Texas  

E-Print Network [OSTI]

and supply mine-mouth electric generating stations (Kaiser, 1974). In addition, other large energy-consuming industries and industries that utilize lignite as a chemical raw material can also be expected to place opera- tions near lignite reserves (Hirsch... and supply mine-mouth electric generating stations (Kaiser, 1974). In addition, other large energy-consuming industries and industries that utilize lignite as a chemical raw material can also be expected to place opera- tions near lignite reserves (Hirsch...

Charles, Robert John

2012-06-07T23:59:59.000Z

31

Ground-water hydrogeology and geochemistry of a reclaimed lignite surface mine  

E-Print Network [OSTI]

that generally parallels the Gulf Coast (Figure 1). Recent estimates place the total near-surface reserves at 11 billion short tons (Kaiser et al. , 1980). Energy companies are now developing lignite mines throughout the Texas lignite belt at a rapid... and accelerating rate. Surface mining of lignite could adversely affect another valuable Texas resource--ground water. Eighty percent of the near-surface lignite reserves are located within the Wilcox Group (Kaiser et al. , 1980), which is part of the Carrizo...

Pollock, Clifford Ralph

2012-06-07T23:59:59.000Z

32

Lignite resources of Turkey: Geology, reserves, and exploration history  

Science Journals Connector (OSTI)

Abstract This article aims to emphasize the importance of lignite, which is the mostly used domestic energy source in the Turkish energy mix, by briefly overviewing its geology, reserves, and exploration. Lignites are distributed in mostly continental sedimentary basins of Tertiary age all over the country. The lignite-bearing basins display the characteristics of different geological settings, of which grabens and half-grabens are the most common ones especially in western Anatolia. The geological and chemical characteristics of Turkish lignites do not only create some important problems during mining and coal preparation but also make them unfavorable for consumption. However, since they are the most valuable energy resource of the country they should benefit the economy in the most efficient and environmentally friendly way. Moreover, two most important conclusions of this study are as follows: firstly, reserve estimation practices in the country should definitely be revised to provide a more realistic evaluation of the country's lignite potential for developing medium- and long-term energy strategies and policies for decision- and policy-makers. Secondly, exploration and development activities should be coordinated by a single institution, most likely a government institution, as has been the case for some 50 years.

Volkan ?. Ediger; Istemi Berk; Ayhan Kösebalaban

2014-01-01T23:59:59.000Z

33

Effect of Operational Variables on the Hydrogasification of Inner Mongolian Lignite Semicoke  

Science Journals Connector (OSTI)

Inner Mongolia has lignite reserves of more than 150 billion tons, which account for more than 70% of total lignite reserves in China. ... Two Turkish lignites are carbonized at 700 and 900°, and the methane formation rates of these chars and of the char prepd. ...

Xiaokuo Ding; Yongfa Zhang; Tiankai Zhang; Jian Tang; Ying Xu; Jing Zhang

2013-07-16T23:59:59.000Z

34

Palynological evidence for the astronomical origin of lignite^detritus sequence in the Middle Pleistocene  

E-Print Network [OSTI]

Palynological evidence for the astronomical origin of lignite^detritus sequence in the Middle-order alternation of lignites and detrital muds and second-order alternation expressed by frequent intercalation's orbital forcing. All the lignite seams yield temperate oak forest whereas the detrital beds provide semi

Utrecht, Universiteit

35

Effect of Upgraded Lignite Product Water Content on the Propensity for Spontaneous Ignition  

Science Journals Connector (OSTI)

At the end of 2005, worldwide lignite reserves were 207.4 billion tons and accounted for 17.7% of total coal. ... Therefore, there is still considerable interest in the propensity for spontaneous ignition of upgraded lignites products with different moisture contents and also the recommended water content for upgraded lignite products. ...

Kai Zhang; Changfu You

2012-12-11T23:59:59.000Z

36

NETL: News Release - More Electricity, Lower Emissions from Lignite Plants  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

25, 2004 25, 2004 More Electricity, Lower Emissions from Lignite Plants Are Goals of New Clean Coal Project Fuel Enhancement System Expected to Boost Generating Capacities WASHINGTON, DC - Secretary of Energy Spencer Abraham today announced the testing of the Lignite Fuel Enhancement System, a new process that could dramatically reduce air emissions from certain coal-based power plants while boosting overall generating capacity. The project, conducted by Great River Energy, is expected to boost the generating capacity and efficiency of power plants that burn high-moisture lignite coal, thereby reducing air pollutants and greenhouse gases. The new technology uses waste heat to dry nearly a quarter of the moisture in the coal before it is fed into the power plant boiler.

37

Hydroliquefaction of Big Brown lignite in supercritical fluids  

E-Print Network [OSTI]

Big Brown lignite was liquefied in a fixed bed tube reactor. Three solvents were used in the liquefaction studies, toluene, cyclohexane and methanol. Two co-solvents, tetralin and water were used with toluene. The effects of the solvents and co...

Chen, Hui

2012-06-07T23:59:59.000Z

38

Sedimentary regimes of upper Midway and lower Wilcox lignite in Alabama  

SciTech Connect (OSTI)

Paleoenvironments favorable for lignite deposition existed in sedimentary regimes of the Naheola Formation (upper Midway Group) and in Midway-Wilcox transition sediments apparently assignable to the Nanafalia Formation (Wilcox Group). In addition, lignite horizons are recognized in the Tuscahoma Sand (Wilcox Group). Lignite of potential economic significance occurs within the Naheola Formation west of Butler County and within the Nanafalia Formation east of Butler County. Lignite horizons in the Naheola Formation west of Butler County probably are not stratigraphically or time equivalent to lignite horizons east of Butler County. Depositional environments of the Naheola west of Butler County were favorable for development of lignite deposits with extensive lateral continuity, whereas lignite depositional environments east of Butler County apparently favored variability in thickness and lateral continuity. Estuarine and back-barrier coastal marsh environments are suggested for the lignite. Carbonaceous silt and clay in varying proportions are commonly associated with lignite in the Naheola Formation. Lithologic associations of lignite related to the Nanafalia Formation include quartzarenite, carbonaceous silt and clay, oyster beds, and limestone of the Clayton Formation (Midway Group).

Smith, W.E.

1983-09-01T23:59:59.000Z

39

Lignite industry in Greece within a world context: Mining, energy supply and environment  

Science Journals Connector (OSTI)

Today coal covers 38% of global production and roughly 30% of the EU-25 power output. In 2005 domestic lignite with a share of 60.5% in power generation and accounting about 30% of primary energy consumption is currently the most important indigenous fuel of Greece. Greece, mining 70 Mt annually, is the second lignite producer in the EU and fourth in the world. Approximately 97% of the lignite used to supply the existing lignite-fired power plants of Greece is mined by Public Power Corporation S.A. (PPC). Lignite as the base load fuel gives a competitive strength in PPC's and Greece's fuel mix. Due to lignite consumer prices in Greece are significantly below those in other comparable markets in EU-15. Extraction of lignite has a very long tradition. Significant achievements and large experience which has been gained during many years of mining operations place Greek lignite-mining industry in the leading position in Europe. The paper presents current state of Greek lignite industry, including operating mines, volume of production and other important production indicators as well as improvements in labor productivity and good results in industrial safety. The future of coal and specifically of Greek lignite will be crucially determined by environmentally compatible, i.e. low-CO2 generation of electricity. Investment in modernization and renewal of the power plant fleet are the key to securing electricity supply and progress in preventing climate change.

Konstantinos Kavouridis

2008-01-01T23:59:59.000Z

40

Concentrations and source apportionment of PM10 and associated elemental and ionic species in a lignite-burning power generation area of southern Greece  

Science Journals Connector (OSTI)

The Megalopolis Lignite Centre (MLC), located in the center ... mining fields of the country with total mineable lignite reserves of about 434 Mt. The lignite deposits cover a total area of 40,...2 and are exploi...

G. Argyropoulos; Th. Grigoratos…

2013-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "bitu subbitu lignite" 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

The spatial distribution of the lignite qualitative parameters and variant estimates of coal reserves: the Czech Part of the Vienna Basin  

Science Journals Connector (OSTI)

...The aim of this article is to inform about the spatial distribution of the lignite qualitative parameters and total lignite reserves in the Czech Part of the Vienna Basin—The South Moravian Lignite Coalfield (...

Jan Jelínek; František Stan?k; Lukáš Vebr…

2014-06-01T23:59:59.000Z

42

Roles of inherent mineral matters for lignite water slurry electrolysis in H2SO4 system  

Science Journals Connector (OSTI)

Abstract To understand roles of inherent mineral matters in lignite water slurry (LWS) electrolysis, lignite and demineralized lignite electrolyses were carried out in H2SO4 system. The results showed that cell voltage for LWS electrolysis was lower than that for demineralized lignite water slurry (DLWS) under constant current condition. Some inherent mineral matters changed into the corresponding metal ions which entered into electrolyte, and thus improved the electrolysis oxidation reactions for coal organic structure. Meanwhile, the relative amount of O-containing functional groups in demineralized lignite increased with electrolysis time, improving its pyrolysis reactivity. However, the pyrolysis reactivity of raw lignite decreased due to the removal of the inherent mineral matters from electrolysis.

Xuzhong Gong; Mingyong Wang; Zhi Wang; ZhanCheng Guo

2013-01-01T23:59:59.000Z

43

Evolution of Organic Sulfur in the Thermal Upgrading Process of Shengli Lignite  

Science Journals Connector (OSTI)

Despite the low price and rich reserves, lignite has not been widely used because of the problems in spontaneous combustion and difficulties in transportation and storage. ... Lignite in China, mainly distributed in the Inner Mongolia and Yunnan province, occupies about 13% of the total coal resource reserve. ... Koca, H.; Koca, H.; Kockar, O. M.Upgrading of Kutahya region lignites by mild pyrolysis and high intensity dry magnetic separation Miner. ...

Dong Li; Cheng Zhang; Ji Xia; Peng Tan; Li Yang; Gang Chen

2013-05-15T23:59:59.000Z

44

Investigation of Bonding Mechanism of Coking on Semi-coke from Lignite with Pitch and Tar  

Science Journals Connector (OSTI)

Investigation of Bonding Mechanism of Coking on Semi-coke from Lignite with Pitch and Tar ... Study on the coking mechanism of coal and coal tar pitches. ...

Vedat Arslan

2006-08-16T23:59:59.000Z

45

Utilization of Lignite Reserves and Simultaneous Improvement of Dust Emissions and Operation Efficiency of a Power Plant by Controlling the Calcium (Total and Free) Content of the Fed Lignite. Application on the Agios Dimitrios Power Plant, Ptolemais, Greece  

Science Journals Connector (OSTI)

Utilization of Lignite Reserves and Simultaneous Improvement of Dust Emissions and Operation Efficiency of a Power Plant by Controlling the Calcium (Total and Free) Content of the Fed Lignite. ... Using the technique mentioned above, by determining the lignite recoverable blocks and progressively improving the mixing of the lignites with different qualities, the solid particle emissions were generally stabilized and reduced (lower than 150 mg m-3), with the best improvement observed around April 1999 and afterward (Figures 2?5). ...

Nestoras Kolovos; Andreas Georgakopoulos; Anestis Filippidis; Constantinos Kavouridis

2002-09-11T23:59:59.000Z

46

Techno-Economic Analysis of Lignite Fuelled IGCC with CO2 Capture: Comparing Fluidized Bed and Entrained Flow Gasifiers  

Science Journals Connector (OSTI)

For shell gasifier case, North Dakota lignite coal is milled ... wt.%, and fed into the Shell gasifier via lock-hopper pressurization using N2...as transport gas. The lignite coal is gasified in the presence of medium

Guangjian Liu; Zhen Wu; Haiying Zhang

2013-01-01T23:59:59.000Z

47

FEM and LEM stability analyses of the fatal landslides at Çöllolar open-cast lignite mine in Elbistan, Turkey  

Science Journals Connector (OSTI)

Afsin-Elbistan lignite basin, located in the Kahramanmaras province (...1), has nearly half of the lignite reserves in Turkey (Ural and Yuksel 2004...). It is a closed basin formed by the rising Taurus Mountains ...

A. Ozbay; A. F. Cabalar

2014-11-01T23:59:59.000Z

48

Behavior study of trace elements in pulverized lignite, bottom ash, and fly ash of Amyntaio power station, Greece  

Science Journals Connector (OSTI)

Greece is second among EU countries for lignite coal production. The indicated reserves are 6.7 billion tonnes with a ... of Greece are generated through the utilization of lignite, while the remaining percentage...

Pavlos Megalovasilis; Georgios Papastergios…

2013-07-01T23:59:59.000Z

49

The natural radioactivity contents in feed coals from the lignite-fired power plants in Western Anatolia, Turkey  

Science Journals Connector (OSTI)

......production cost. Present Turkey reserves of lignite are estimated to be 8.4 billion...constitute the most important known lignite reserves. The Mugla basin is one of...The Seyitomer basin has a lignite reserve of about 200 Mt and supplies......

N. Füsun Çam; Günseli Yaprak; Elif Eren

2010-12-01T23:59:59.000Z

50

Comparative risk analysis of development of the lignite basins in Serbian part of the Danube region  

Science Journals Connector (OSTI)

The paper gives an overview of the global business risks and risks in the mining development in the Kolubara and Kostolac lignite basins in the area of the Danube river in Serbia. An identification of main risks is undertaken by application of a comprehensive ... Keywords: danube region, lignite basin, mining and energetics, strategic business risks, sustainable development

Slavka Zekovi?; Tamara Mari?i?

2011-02-01T23:59:59.000Z

51

Selective mining of multiple-layer lignite deposits. A fuzzy approach  

Science Journals Connector (OSTI)

In this paper the development and the application of a fuzzy expert system for the evaluation of the exploitable reserves of multiple-layer lignite deposits, mined by continuous surface methods, is presented. The exploitable reserves are determined decisively ... Keywords: Expert, Exploitable, Fuzzy, Lignite, Mining, Reserves, System

Michael Galetakis; Anthoula Vasiliou

2010-06-01T23:59:59.000Z

52

Formation Mechanism of Slag during Fluid-bed Gasification of Lignite  

Science Journals Connector (OSTI)

Lignite is abundant and makes up approximately 40% of coal reserves in the world. ... Alkalies in lignites (principally Na) were volatilized and reacted with either SO2, to form sulfates, or with clay minerals (principally kaolinite) to form aluminosilicate slag droplets. ...

Fenghai Li; Jiejie Huang; Yitian Fang; Yang Wang

2010-12-30T23:59:59.000Z

53

Transformation of Alkali Metals during Pyrolysis and Gasification of a Lignite  

Science Journals Connector (OSTI)

North China has large reserves of low rank coal deposits such as lignite that are suitable to be used in fluidized-bed gasification. ... Influence of Temperature on the Release of Inorganic Species from Victorian Brown Coals and German Lignites under CO2 Gasification Conditions ...

Xiaofang Wei; Jiejie Huang; Tiefeng Liu; Yitian Fang; Yang Wang

2008-04-17T23:59:59.000Z

54

DOE Regional Partnership Initiates CO2 Injection in Lignite Coal Seam |  

Broader source: Energy.gov (indexed) [DOE]

Initiates CO2 Injection in Lignite Coal Initiates CO2 Injection in Lignite Coal Seam DOE Regional Partnership Initiates CO2 Injection in Lignite Coal Seam March 10, 2009 - 1:00pm Addthis Washington, DC -- A U.S. Department of Energy/National Energy Technology Laboratory (NETL) team of regional partners has begun injecting CO2 into a deep lignite coal seam in Burke County, North Dakota, to demonstrate the economic and environmental viability of geologic CO2 storage in the U.S. Great Plains region. Ultimately, geologic carbon sequestration is expected to play an important role in mitigating greenhouse gas emissions and combating climate change. The Lignite Field Validation Test is being conducted by the Plains CO2 Reduction (PCOR) Partnership, one of seven regional partnerships under DOE's Regional Carbon Sequestration Partnership Program. The seven

55

Estimation of lignite reserve in the Kalburcayiri field, Kangal basin, Sivas, Turkey  

Science Journals Connector (OSTI)

This paper addresses a case study on global estimation of lignite reserve in the Kalburcayiri field from the Sivas–Kangal basin, which is one of the most productive lignite basins in eastern Anatolia, Turkey. The two lignite seams, which were developed in a fresh-water lacustrine depositional environment during the Pliocene time, are currently being exploited in the Kalburcayiri open-cast mine for feed coal to a power plant with 300-MW capacity. Tonnage, thickness and quality parameters (ash yield, total sulphur content, and calorific value) of the lignite are variables considered in this study. The global estimates of these variables together with 95% confidence limits are obtained using the approximation principle of global estimation. A random stratified grid is fitted to available boreholes; the variograms for thickness and lignite quality parameters are estimated and modeled. The models are used in calculating estimation error variances that will later be used in constructing 95% confidence intervals for the true values.

A.Erhan Tercan; Ali Ihsan Karayigit

2001-01-01T23:59:59.000Z

56

Present situation and prospects for lignite in the Polish power-generation industry  

Science Journals Connector (OSTI)

In Poland, lignite is mined in open pits and four deep mines, producing totally about 60–65 million tons a year. Extracted lignite constitutes a fuel for power plants with a total installed capacity of 8833 MW, which generate some 35% of electric energy nationally. This energy is cheaper compared with that from other sources. Poland, with its huge deposits of lignite, is placed in a privileged position, for apart from at present mined deposits, which constitute only about 15% of workable reserves, some abundant areas exist, where mining working can be started. At present, the mined deposits allow us to maintain a current yearly output for the forthcoming 15 years, whereas through the subsequent 30 years, it will decline. In order to maintain supplies of lignite, which is a significant fuel in Poland, it is necessary to fully utilize deposits in the existing areas, and develop new zones where lignite occurs.

Zbigniew Koz?owski

2003-01-01T23:59:59.000Z

57

The fractionation and characterization of two North American lignites  

E-Print Network [OSTI]

Assignments for the TMSI Reaction Page TI Product of the Gascoyne Bitumen LIST OF FIGURES FIGURE I, Extraction and Fractionation Scheme for the Page Gascoyne Lignite 24 2. X-Ray Diffractogram of the Low-Temperature Ash of the Demineralized Wilcox... the required data by inductively coupled argon plasma-atomic emissions spectrometry, which was essential in the completion of the thesis. Many thanks goes out to Ahmad Moini for performing the X-ray diffraction on the samples submitted. Finally, I wish...

Garcia Juan Manuel

1985-01-01T23:59:59.000Z

58

A kinetic model for the liquefaction of Texas lignite  

E-Print Network [OSTI]

-basin lig- nite is in situ comminution or liquefaction in which a solvent is pumped into the coal seam producing a high Btu liquid product. The shallow basin lignite can be strip-mined and converted to transportation fuels and chemicals by additional... taking product samples at the reaction temperature and pressure and extracting the sample with benzene and n-hexane to form three portions. Vacuum distillation was used to separate the hexane-soluble portion into two parts: the light oils and the coal...

Haley, Sandra Kay

1980-01-01T23:59:59.000Z

59

Mercury Control Technologies for Electric Utilities Burning Lignite Coal  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Mercury control technologies for Mercury control technologies for electric utilities Burning lignite coal Background In partnership with a number of key stakeholders, the U.S. Department of Energy's Office of Fossil Energy (DOE/FE), through its National Energy Technology Laboratory (NETL), has been carrying out a comprehensive research program since the mid-1990s focused on the development of advanced, cost-effective mercury (Hg) control technologies for coal-fired power plants. Mercury is a poisonous metal found in coal, which can be harmful and even toxic when absorbed from the environment and concentrated in animal tissues. Mercury is present as an unwanted by-product of combustion in power plant flue gases, and is found in varying percentages in three basic chemical forms(known as speciation): particulate-bound mercury, oxidized

60

Reclamation planning and operation at the Mae Moh Lignite Mine, Thailand  

SciTech Connect (OSTI)

The Mae Moh Mine is a large open cut lignite mine situated in Northern Thailand. The mine produces lignite for coal fired power stations located adjacent to the mine. Current mine production is approximately 9 Mtpa providing lignite to eight power stations with a total output of 1,125 MW. The power development plan for Mae Moh provides for 19 power stations by the year 1999 which will require lignite production to be increased to 30.5 Mtpa and overburden will be mined at a rate approaching 300 Mtpa. Environmental management and reclamation planning at Mae Moh are major issues due to water quality impact and land use conflicts. This paper presents the key elements of the reclamation master plan and works strategy for progressive reclamation and water pollution control.

Miller, S.D. [Stuart D. Miller & Associates, Balmain (Australia); Teparat, C. [Electricity Generating Authority of Thailand, Mae Moh (Thailand)

1990-12-31T23:59:59.000Z

Note: This page contains sample records for the topic "bitu subbitu lignite" 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 Medium BTU Gas by In Situ Gasification of Texas Lignite  

E-Print Network [OSTI]

The necessity of providing clean, combustible fuels for use in Gulf Coast industries is well established; one possible source of such a fuel is to perform in situ gasification of Texas lignite which lies below stripping depths. If oxygen (rather...

Edgar, T. F.

1979-01-01T23:59:59.000Z

62

The Importance of Geological Features in Designing Open-Pit Lignite Exploitations  

Science Journals Connector (OSTI)

Greece covers today 50 per cent of its electric power generation by burning low grade lignite extracted from open pits. Greece or more correctly the Greek Public ... year 1990. To achieve it, new open pits will b...

J. Tanakakis

1983-01-01T23:59:59.000Z

63

Water table recovery in a reclaimed surface lignite mine, Grimes County, Texas  

E-Print Network [OSTI]

Water table recovery in four reclaimed mine blocks containing replaced overburden has been monitored at Gibbons Creek Lignite Mine in Grimes County, Texas since 1986. Recovery analysis was conducted based on data recorded at 27 wells installed...

Peace, Kelley H.

1995-01-01T23:59:59.000Z

64

Investigation on the sintering behaviors of low-temperature lignite ashes  

Science Journals Connector (OSTI)

The amount of lignite resource is over 1,290 million tons ... for 12.7 % of the total coal reserves in China. Traditionally, it is mainly...1]. Gasification, a promising technology for dealing with the commercial...

Shaohua Ji; Fenghai Li; Tao Wang; Zhenzhu Li…

2014-09-01T23:59:59.000Z

65

Impacts of Inherent O-Containing Functional Groups on the Surface Properties of Shengli Lignite  

Science Journals Connector (OSTI)

MHC was successfully correlated with the presence of O-containing functional groups and the quantity of surface area without oxygen groups, as follows: MHC = 2.655[?COOH] + 2.912[?OH] + 0.209[?OCH3] – 3.321Snon-O + 1.341, where Snon-O for the lignite is defined as Snon-O = Si(1 – Ci/C0), where Si is the surface area of the lignite and Ci and C0 are the total contents of O-containing functional groups in the heat-treatment or as-received lignites. ... The use of abundant lignite deposits has become increasingly important as the minable reserves of high-rank coal in China are rapidly becoming depleted with the development of more advanced emission control technologies. ...

Yonggang Wang; Jianlin Zhou; Lei Bai; Yanju Chen; Shu Zhang; Xiongchao Lin

2014-01-01T23:59:59.000Z

66

Evaluation of the Impact of Texas Lignite Development on Texas Water Resources  

E-Print Network [OSTI]

Fuel shortages and resultant rising fuel costs as well as federal policies prompting energy independence have served to encourage power companies to exploit available lignite deposits of the western states as a viable fuel source. Large reserves...

Mathewson, C. C.; Cason, C. L.

67

NOx Formation of Co-combustion of Sweet Sorghum – Lignite (Orhaneli) Mixtures in Fluidised Beds  

Science Journals Connector (OSTI)

Turkey currently imports over 70% of its energy needs from other countries [4...]. Turkey has to turn towards its own natural sources. The most important reserve is the lignites, unfortunately low quality exertin...

M. Handan Çubuk; Derya B. Özkan; Özlem Emanet

2011-01-01T23:59:59.000Z

68

The Acid Lakes of Lignite Mining District of the former German Democratic Republic  

Science Journals Connector (OSTI)

Large areas of central and eastern Europe have reserves of hard and brown coal. The map ... Germany, Poland and the Czech Republic. The reserves of lignite in Germany with 56 x 109 tons ... output correspond to 1...

M. Schultze; W. Geller

1996-01-01T23:59:59.000Z

69

A method to calculate the cumulative energy demand (CED) of lignite extraction  

Science Journals Connector (OSTI)

For the utilisation of an energy carrier such as lignite, the whole life cycle including necessary energy supply processes have to be considered. Therefore using the ‘Cumulative Energy Demand’ (CED) is especially...

Michael Röhrlich; Mark Mistry…

2000-11-01T23:59:59.000Z

70

JV Task - 129 Advanced Conversion Test - Bulgarian Lignite  

SciTech Connect (OSTI)

The objectives of this Energy & Environmental Research Center (EERC) project were to evaluate Bulgarian lignite performance under both fluid-bed combustion and gasification conditions and provide a recommendation as to which technology would be the most technically feasible for the particular feedstock and also identify any potential operating issues (such as bed agglomeration, etc.) that may limit the applicability of a potential coal conversion technology. Gasification tests were run at the EERC in the 100-400-kg/hr transport reactor development unit (TRDU) on a 50-tonne sample of lignite supplied by the Bulgarian Lignite Power Project. The quality of the test sample was inferior to any coal previously tested in this unit, containing 50% ash at 26.7% moisture and having a higher heating value of 5043 kJ/kg after partial drying in preparation for testing. The tentative conclusion reached on the basis of tests in the TRDU is that oxygen-blown gasification of this high-ash Bulgarian lignite sample using the Kellogg, Brown, and Root (KBR) transport gasifier technology would not provide a syngas suitable for directly firing a gas turbine. After correcting for test conditions specific to the pilot-scale TRDU, including an unavoidably high heat loss and nitrogen dilution by transport air, the best-case heating value for oxygen-blown operation was estimated to be 3316 kJ/m{sup 3} for a commercial KRB transport gasifier. This heating value is about 80% of the minimum required for firing a gas turbine. Removing 50% of the carbon dioxide from the syngas would increase the heating value to 4583 kJ/m{sup 3}, i.e., to about 110% of the minimum requirement, and 95% removal would provide a heating value of 7080 kJ/m{sup 3}. Supplemental firing of natural gas would also allow the integrated gasification combined cycle (IGCC) technology to be utilized without having to remove CO{sub 2}. If removal of all nitrogen from the input gas streams such as the coal transport air were achieved, a heating value very close to that needed to fire a gas turbine would be achieved; however, some operational issues associated with utilizing recycled syngas or carbon dioxide as the transport gas would also have to be resolved. Use of a coal with a quality similar to the core samples provided earlier in the test program would also improve the gasifier performance. Low cold-gas efficiencies on the order of 20% calculated for oxygen-blown tests resulted in part from specific difficulties experienced in trying to operate the pilot-scale TRDU on this very high-ash lignite. These low levels of efficiency are not believed to be representative of what could be achieved in a commercial KRB transport gasifier. Combustion tests were also performed in the EERC's circulating fluidized-bed combustor (CFBC) to evaluate this alternative technology for use of this fuel. It was demonstrated that this fuel does have sufficient heating value to sustain combustion, even without coal drying; however, it will be challenging to economically extract sufficient energy for the generation of steam for electrical generation. The boiler efficiency for the dried coal was 73.5% at 85% sulfur capture (21.4% moisture) compared to 55.3% at 85% sulfur capture (40% moisture). Improved boiler efficiencies for this coal will be possible operating a system more specifically designed to maximize heat extraction from the ash streams for this high-ash fuel. Drying of the coal to approximately 25% moisture probably would be recommended for either power system. Fuel moisture also has a large impact on fuel feedability. Pressurized gasifiers generally like drier fuels than systems operating at ambient pressures. The commercially recommended feedstock moisture for a pressurized transport reactor gasifier is 25% moisture. Maximum moisture content for a CFB system could be approximately 40% moisture as has been demonstrated on the Alstom CFB operating on Mississippi lignite. A preliminary economic evaluation for CO{sub 2} was performed on the alternatives of (1) precombustion separation of CO{sub 2} in

Michael Swanson; Everett Sondreal; Daniel Laudal; Douglas Hajicek; Ann Henderson; Brandon Pavlish

2009-03-27T23:59:59.000Z

71

Characterizing a lignite formation before and after an underground coal gasification experiment  

E-Print Network [OSTI]

CHARACTERIZING A LIGNITE FORMATION BEFORE AND AFTER AN UNDERGROUND COAL GASIFICATION EXPERIMENT A Thesis by USMAN AHMED Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement for the degree... of MASTER OF SCIENCE Nay, 1981 Major Subject: Petrol eum Engineering CHARACTERIZING A LIGNITE FORMATION BEFORE AND AFTER AN UNDERGROUND COAL GASIFICATION EXPERIMENT A Thesis by USMAN AHMED approved as to sty1e and content by: airma o i ee Head f...

Ahmed, Usman

2012-06-07T23:59:59.000Z

72

Correlation of stratigraphy with revegetation conditions at the Gibbons Creek Lignite Mine, Grimes County, Texas  

E-Print Network [OSTI]

. Correlation of Geochemistry with Environments of Deposition . Cross-Sections and Maps . GIBBONS CREEK LIGNITE MINE . 1 5 7', 7 8: 8 8 9'' 10 Location and Geologic Setting . Previous Studies 11, ' 13 High-wall Stability Hydrogeology... of each of these environments. As a result of her geologic study, she named the four lignite seams as 1, 2, 3 and 4 from oldest to youngest (Figure 5). This knowledge of the environment of deposition gave her a better understanding of the units...

Parisot, Laurence D.

1991-01-01T23:59:59.000Z

73

Engineering geologic feasibility of lignite mining in alluvial valleys by hydraulic dredging methods  

E-Print Network [OSTI]

ENGINEERING GEOLOGIC FEASIBILITY OF LIGNITE MINING IN ALLUVIAL VALLEYS BY HYDRAULIC DREDGING METHODS A Thesis by CYNTHIA LYNN CASON Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement... for the degree of MASTER OF SCIENCE May 1982 Niajor Subject: Geology ENGINEERING GEOLOGIC FEASIBILITY OF LIGNITE MINING IN ALLUVIAL VALLEYS BY HYDRAULIC DREDGING METHODS A Thesis by CYNTHIA LYNN CASON Approved as to style and content by: (Chairman...

Cason, Cynthia Lynn

1982-01-01T23:59:59.000Z

74

Photochemical Dissolution of Turkish Lignites in Tetralin at Different Irradiation Power and Reaction Times  

Science Journals Connector (OSTI)

The effect of the power of ultraviolet (UV) irradiation on the tetrahydrofuran (THF) solubles yield (the total soluble product) and the soluble product distribution of the dissolution of Turkish lignites (Beypazar? and Tunçbilek lignite) in tetralin at ambient temperatures has been investigated. ... Among them, coal has received special attention because of its large proven reserves as well as the similarity between the products obtained by its processing and crude oil. ...

F. Karacan; T. To?rul

2007-05-24T23:59:59.000Z

75

Ash Quality of a Beneficiated Lignite from Ptolemais Basin, Northern Greece  

Science Journals Connector (OSTI)

Ash Quality of a Beneficiated Lignite from Ptolemais Basin, Northern Greece ... Knowing that oil and gas reserves are diminishing very fast, the beneficiation of coals is of most importance, since this energy source is widely distributed around the world. ... The present research was carried in collaboration with Public Power Corporation of Greece, which simultaneously conducted pilot plant tests for beneficiating Greek lignites, using the TRI-FLO technique. ...

D. Vamvuka; E. Mistakidou; S. Drakonaki; A. Foscolos; K. Kavouridis

2001-08-10T23:59:59.000Z

76

Cofiring Lignite with Hazelnut Shell and Cotton Residue in a Pilot-Scale Fluidized Bed Combustor  

Science Journals Connector (OSTI)

The absence of studies on cofiring of indigenous lignite with hazelnut shell/cotton residue blends in fluid bed combustors on one hand and the recent trend in utilization of biomass with local reserves in industry and utility boilers on the other necessitate investigation of combustion and emission characteristics of these fuel blends. ... However, the effect of recycle on gaseous emissions from combustion of Turkish lignites with high ash, volatile matter, and sulfur contents has not been investigated to date. ...

Zuhal Gogebakan; Nevin Selçuk

2008-03-26T23:59:59.000Z

77

Artificial weathering of siderite (FeCO3) taken from lignite overburden  

E-Print Network [OSTI]

of the experimental design used in the artificial weathering study. 101 CHAPTER I INTRODUCTION Texas has large reserves of near surface lignite. Many hectares of land have already been surface mined and nearly half a million hectares are possible future sites... of the experimental design used in the artificial weathering study. 101 CHAPTER I INTRODUCTION Texas has large reserves of near surface lignite. Many hectares of land have already been surface mined and nearly half a million hectares are possible future sites...

Frisbee, Nellie Mae

2012-06-07T23:59:59.000Z

78

Lignite-fired thermal power plants and SO2 pollution in Turkey  

Science Journals Connector (OSTI)

About 80% of the electric energy production in Turkey is provided by thermal power plants which use fossil fuels. Lignite, the most abundant domestic energy source, is consumed in most of these plants. Turkey has approximately 0.85% of the world's lignite reserves; however, the Turkish lignites have low calorific value and contain relatively higher amounts of ash, moisture, and sulfur. Nearly 80% of the lignite mined in Turkey is consumed in the thermal power plants since it is not appropriate for use in other types of industry and heating. In Turkey, 13 large-scale lignite-fired thermal power plants are responsible for a considerable amount of air pollution. Therefore, it is crucial to decide on the optimal place and technology for the future thermal power plants, and to equip the currently operating plants with newer technologies that will reduce amount of contaminants released into the air. In this study, the effects of the lignite-fired thermal power plants which have an important place in the energy politics in Turkey on the air pollution are investigated. We focused on SO2 pollution and the regions in which the SO2 emissions were concentrated and diffused. The pollutant diffusion areas were projected and mapped based on parameters such as wind data, isotherm curves, population density, and topographic features by using Geographical Information System (GIS) software, ArcView. The contribution of the thermal power plants to SO2 pollution was also examined.

Nuriye Peker Say

2006-01-01T23:59:59.000Z

79

Feasibility Studies of the Sequential Dewatering/Dry Separation of Chinese Lignite in a Vibration Fluidized-Bed Dryer: Effect of Physical Parameters and Operation Conditions  

Science Journals Connector (OSTI)

Lignite is an abundant raw energy material that is considered as a major component of global coal reserves. ... The process is being investigated as a means of lowering greenhouse gas emissions from existing lignite fired power stations by reducing the moisture content of lignites. ...

Pengfei Zhao; Yuemin Zhao; Zhenfu Luo; Zengqiang Chen; Chenlong Duan; Shulei Song; Liang Dong

2014-06-16T23:59:59.000Z

80

Study of Chemical Structure Changes of Chinese Lignite upon Drying in Superheated Steam, Microwave, and Hot Air  

Science Journals Connector (OSTI)

Study of Chemical Structure Changes of Chinese Lignite upon Drying in Superheated Steam, Microwave, and Hot Air ... An estimated 45% of the world’s coal reserves consist of low-rank coals. ... A range of samples varying from lignites to bituminous coals were used at 30-180°. ...

Arash Tahmasebi; Jianglong Yu; Yanna Han; Fengkui Yin; Sankar Bhattacharya; David Stokie

2012-05-29T23:59:59.000Z

Note: This page contains sample records for the topic "bitu subbitu lignite" 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

Major ion chemistry and identification of hydrogeochemical processes controlling groundwater in and around Neyveli Lignite Mines, Tamil Nadu, South India  

Science Journals Connector (OSTI)

The lignite resources in Tamil Nadu State accounts for ... more than 80 % of India’s known lignite reserves of 39 billion tonnes (as of 1...2010a). The Neyveli hydrogeological basin covers an area of 3,500 km2......

S. Chidambaram; P. Anandhan; M. V. Prasanna…

2013-09-01T23:59:59.000Z

82

Calculation and modelling to the brown coal drying fluidized bed specialized for Greek lignite of west Macedonia  

Science Journals Connector (OSTI)

Brown coal is considered to be a competitive primary energy source for power generation in parts of Central and Eastern Europe due to the economically recoverable reserves of this fuel in these regions. Specifically for Greece lignites is the main fuel ... Keywords: brown coal, electric energy, energy source, fluidized bed, lignites

John Karmalis; Nikolaos Asimopoulos; Dimitrios Zissopoulos; Natsos Kouvatsis

2010-07-01T23:59:59.000Z

83

Evaluation of an On-Line Ash Analysis System for Low-Grade and Inhomogeneous Greek Lignite  

Science Journals Connector (OSTI)

The possibility of using commercial on-line analysis systems for monitoring the ash content of low-grade lignites was investigated by carrying out numerous bench- and pilot-scale trials in the mines of Public Power Corporation SA, Greece. ... The remaining lignite reserves that are suitable for electricity generation are 3.2 billion tonnes (as of 12/31/2005). ...

Konstantinos V. Kavouridis; Francis F. Pavloudakis

2007-06-07T23:59:59.000Z

84

Influence of Lignite Mining and Utilization on Organic Matter Budget in the Alfeios River Plain, Peloponnese (South Greece)  

Science Journals Connector (OSTI)

The remaining reserves are estimated approximately at 237 Mt.37 The Megalopolis lignite belongs to the mineral-rich and matrix lithotypes. ... cycles comprising first-order alternation of lignites and detrital muds and second-order alternation expressed by frequent intercalation of org. ...

G. Siavalas; S. Kalaitzidis; G. Cornelissen; A. Chatziapostolou; K. Christanis

2007-07-25T23:59:59.000Z

85

Two and three dimensional analysis of a slope failure in a lignite mine  

Science Journals Connector (OSTI)

With about 9.3 billion tons of reserve, lignite is a major source for energy production in Turkey. The Af?in–Elbistan lignite basin, containing 47% of the overall lignite reserve in Turkey, lies in the Af?in and Elbistan districts as a part of Kahramanmara?. The new Çöllolar opencast mine is in the Afsin–Elbistan lignite basin, and this mine will be the second mining activity in the basin after the active K??laköy opencast mine. The new mine will meet the coal consumption of the Elbistan B power plant. Input parameters for slope stability analysis are essential, and so they must be determined accurately and precisely. Field investigations, laboratory testing and back analyses are vital instruments for the input parameters. This study presents the results of slope stability analysis via finite difference code and a limit equilibrium software for the soil slopes of the Elbistan–Çöllolar lignite mine. The basic input parameters, cohesion and friction angle, were determined in the soil mechanics laboratory. By back analyses of a large scale slope failure, mobilized friction angles for a critical weak clay layer under the lignite seam were determined accurately by using the 2D limit equilibrium method and 3D finite difference models. Results of the friction angles were compared in order to check the effectiveness of commonly used 2D approaches in handling the slope problems. Differences in the results of the mobilized friction angles for the weak clay layer were more than 30%. The 3D models indicated that the mobilized friction angle during the major slope failure was substantially lower than the friction angle generated by the 2D limit equilibrium method.

Levent Tutluoglu; Ibrahim Ferid Öge; Celal Karpuz

2011-01-01T23:59:59.000Z

86

Characterization of Texas lignite and numerical modeling of its in-situ gasification  

E-Print Network [OSTI]

CHARACTERIZATION OF TEXAS LIGNITE AND NUMERICAL MODELING OF ITS IN-SITU GASIFICATION A Thesis by YIH-JY WANG Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER... OF SCIENCE December 1983 Major Subject: Geophysics CHARACTERIZATION OF TEXAS LIGNITE AND NUMERICAL MODELING OF ITS IN-SITU GASIFICATION A Thesis by YIH-JY WANG Approved as to style and content by: James E. Russell (Chairman of Committee) M. Caputo...

Wang, Yih-Jy

2012-06-07T23:59:59.000Z

87

Comparative radiocarbon dating of lignite, pottery, and charcoal samples from Babeldaob Island, Republic of Palau  

SciTech Connect (OSTI)

It is difficult to construct archaeological chronologies for Babeldaob, the main island of Palau (western Micronesia), because the saprolitic clays of the dominant terraced-hill sites and associated ceramic sherds often contain old carbon that originated in lignites. This has implications, as well, for chronologies of sedimentary sequences. Comparative analysis of the dating problem using lignite, pottery, and charcoal samples indicates that, in fact, there are both old and young sources of potential contamination. It is concluded that radiocarbon samples from Babeldaob need to be tested for appropriate carbon content rather than relying solely upon material identification.

Anderson, A.; Chappell, J.; Clark, G.; Phear, S. [Australian National University, Canberra, ACT (Australia)

2005-07-01T23:59:59.000Z

88

Cofiring lignite with hazelnut shell and cotton residue in a pilot-scale fluidized bed combustor  

SciTech Connect (OSTI)

In this study, cofiring of high ash and sulfur content lignite with hazelnut shell and cotton residue was investigated in 0.3 MWt METU Atmospheric Bubbling Fluidized Bed Combustion (ABFBC) Test Rig in terms of combustion and emission performance of different fuel blends. The results reveal that cofiring of hazelnut shell and cotton residue with lignite increases the combustion efficiency and freeboard temperatures compared to those of lignite firing with limestone addition only. CO{sub 2} emission is not found sensitive to increase in hazelnut shell and cotton residue share in fuel blend. Cofiring lowers SO{sub 2} emissions considerably. Cofiring of hazelnut shell reduces NO and N{sub 2}O emissions; on the contrary, cofiring cotton residue results in higher NO and N{sub 2}O emissions. Higher share of biomass in the fuel blend results in coarser cyclone ash particles. Hazelnut shell and cotton residue can be cofired with high ash and sulfur-containing lignite without operational problems. 32 refs., 12 figs., 11 tabs.

Zuhal Gogebakan; Nevin Selcuk [Middle East Technical University, Ankara (Turkey). Department of Chemical Engineering

2008-05-15T23:59:59.000Z

89

Soil microbial biomass: an estimator of soil development in reclaimed lignite mine soil  

E-Print Network [OSTI]

A two-year study was conducted at the Big Brown lignite mine in Fairfield, Texas, to determine the rate and extent of recovery of the soil microbial biomass (SMB) in mixed overburden. The relationships between SMB carbon (SMBC), basal respiration...

Swanson, Eric Scott

1996-01-01T23:59:59.000Z

90

Production of Benzene Polycarboxylic Acids from Lignite by Alkali-Oxygen Oxidation  

Science Journals Connector (OSTI)

Production of Benzene Polycarboxylic Acids from Lignite by Alkali-Oxygen Oxidation ... The oxidation of coal to produce high-valued benzene polycarboxylic acids (BPCAs), which are obtained currently from diminishing petroleum reserves, is a promising industrial process of the future. ...

Wenhua Wang; Yucui Hou; Weize Wu; Muge Niu; Weina Liu

2012-10-22T23:59:59.000Z

91

Selective mining of multiple-layer lignite deposits. A fuzzy approach  

Science Journals Connector (OSTI)

In this paper the development and the application of a fuzzy expert system for the evaluation of the exploitable reserves of multiple-layer lignite deposits, mined by continuous surface methods, is presented. The exploitable reserves are determined decisively by the structure of these deposits, as well as by the limitations of the used mining systems. In practice, thin layers of lignite and interbedded waste layers are grouped under specified assumptions regarding thickness and ash content, to form the exploitable blocks. Moreover, the decision for excavating such a block is made under subjective constraints of different importance, or by using uncertain data. Advances in fuzzy inference systems (FIS) have provided a new approach to the evaluation of multiple-layer lignite deposits. FIS have the ability to handle imprecise, incomplete or linguistically ambiguous information and incorporate them into decision-making processes. In the developed FIS (Mamdani type) new linguistic variables, related to working conditions, operators’ experience and production were involved. The FIS was used for the estimation of the exploitable reserves of the Southern Field lignite deposit, located in the area of Ptolemais (Greece).

Michael Galetakis; Anthoula Vasiliou

2010-01-01T23:59:59.000Z

92

Stratigraphy and environment of deposition of the San Miguel lignite deposit northern McMullen and southeastern Atascosa counties, Texas  

E-Print Network [OSTI]

deposits. Coastal swamp deposits occur within the lignite interval, a zone of lignite and clay of 3. 7 m (12 ft) ave age thickness. The 1'g. . ite interval has an overall strike-trend with local dip-trending segments. The lignite represents accumulation...). . . . . . . . . ~ ~ ~ 26 12 ~2 f ' ' 2~2'6' 2 ~l f* MK-26, 14. 2 m (46. 75 ft) . 26 13 Regional stratigraphic correlation of the upper and middle Eocene of the Gulf Coast. 28 Electric log correlations in Atascosa and Live Oak counties of Texas. 29 15 Interpretation...

Snedden, John William

1979-01-01T23:59:59.000Z

93

Evaluation of the long-term environmental performance of Greek lignite-fired power stations  

Science Journals Connector (OSTI)

Abstract At national, regional and global level, there is no doubt that the electric generation from fossil fuel-fired power plants is one of the greatest causes of air pollution and climate change. However, fossil fuels contribute more than 70% in the planet electricity generation during the last 30 years. In Greece, lignite is the only proved significant indigenous fossil fuel source, currently representing about 50% of the national electricity generation (a situation which is not expected to change dramatically in the near future). As a result, owed to the use of local lignite reserves (poor quality lignite), the Greek Lignite Thermal Power Stations (LTPSs) are responsible for the production of significant airborne emissions and particle releases (e.g. CO2, SO2, NOX, PM). At the same time, Greece, on top of the Kyoto Protocol, has accepted specific obligations and incorporated into its national legislation several air quality Directives concerning the reduction of various harmful gases and particle releases attributed to fossil fuel combustion. Thus, wide scrutiny of concentration time series of all these airborne emissions constitutes an important indicator of the current technology used, considering at the same time that any violation noted should be the object of serious national concern. Under this argument, the current work presents and evaluates the long-term environmental performance of the Greek lignite-based electricity generation system as far as CO2, NOX, SO2 and PM are concerned up to the year 2011. According to the results obtained, one may rank the operating \\{LTPSs\\} according to their environmental performance giving to the Greek society the necessary tools to determine their utilisation factor on top of the techno-economic criteria used up to now.

J.K. Kaldellis; M. Kapsali

2014-01-01T23:59:59.000Z

94

Life cycle considerations of the flue gas desulphurization system at a lignite-fired power plant in Thailand  

Science Journals Connector (OSTI)

The Flue Gas Desulphurization (FGD) system has been installed at the biggest lignite-fired power generation plant in Thailand to reduce the large...2...emission. In order to understand the costs and benefits, bot...

Sate Sampattagul; Seizo Kato…

2004-11-01T23:59:59.000Z

95

Experimental forward and reverse in situ combustion gasification of lignite with production of hydrogen-rich syngas  

Science Journals Connector (OSTI)

This research focused on the feasibility of applying the forward and reverse combustion approach to the in situ gasification of lignite with the production of hydrogen-rich syngas (H2 and CO). The so-called forwa...

Yong Cui; Jie Liang; Zhangqing Wang…

2014-03-01T23:59:59.000Z

96

Preliminary Study on Design of Longwall Mining from Final Highwall at Mae Moh Lignite Mine in Thailand  

Science Journals Connector (OSTI)

The EGAT Mae Moh lignite mine is the largest open-pit coal ... in Thailand. The total geological and economical reserves of Mae Moh coal field are approximately...FLAC 3D producted by...

Shitoku Shibata; Nay Zarlin; Hideki Shimada…

2014-01-01T23:59:59.000Z

97

Ground Water Control Techniques for Safe Exploitation of the Neyveli Lignite Deposit, Cuddalore District, Tamil Nadu, India  

Science Journals Connector (OSTI)

Neyveli, a remote hamlet in Cuddalore District, Tamilnadu, India, occupies a prominent place in the industrial and power map of India. The Neyveli lignite field extends over an area of 470...2 with a geological reserve

K. S. Anandan; S. N. Sahay; T. K. Ramabadran…

2010-04-01T23:59:59.000Z

98

An investigation of changes in groundwater quality caused by in-situ gasification of East Texas lignite  

E-Print Network [OSTI]

AN INVESTIGATION OF CHANGES IN GROUNDWATER QUALITY CAUSED BY IN-SITU GASIFICATION OF EAST TEXAS LIGNITE A Thesis by KIMBERLY SUE LEACH Submitted to the Graduate College of Texas AGM University in Partial fulfillment of the requirements... for the degree of MASTER OF SCIENCE May 1988 Major Subject: Petroleum Engineering AN INVESTIGATION OF CHANGES IN GROUNDWATER QUALITY CAUSED BY IN-SITU GASIFICATION OF EAST TEXAS LIGNITE A Thesis by KIMBERLY SUE LEACH Approved as to style and content by...

Leach, Kimberly Sue

2012-06-07T23:59:59.000Z

99

The stratigraphy and environment of deposition of the Wilcox lignite deposit south of Hallsville, Harrison County, Texas  

E-Print Network [OSTI]

to the resistivity log signatures. 102 Pocket Geologic Map INTRODUCTION As the United States oil and gas reserves decline, lignite will assume an increasingly greater role in meeting our rising energy de- mands. Although coal has contributed significantly... to the resistivity log signatures. 102 Pocket Geologic Map INTRODUCTION As the United States oil and gas reserves decline, lignite will assume an increasingly greater role in meeting our rising energy de- mands. Although coal has contributed significantly...

Watson, Joseph Quealy

2012-06-07T23:59:59.000Z

100

Determination of performance characteristics of a one-cylinder diesel engine modified to burn low-Btu (lignite) gas  

E-Print Network [OSTI]

d = standard deviation INTRODUCTION The United States' vast lignite reserves' energy po- tential, while not commanding the public interest as much as the more "exotic" forms of energy conversion (solar, geothermal, wave energy, etc. ), has been... viewed with in- creasing interest by the technical community. Although a tremendous amount of energy is totalled in this country' s lignite coal reserves (Texas deposits alone are estimated at 100 billion tons [1] ), the energy is low-grade; i. e...

Blacksmith, James Richard

2012-06-07T23:59:59.000Z

Note: This page contains sample records for the topic "bitu subbitu lignite" 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

Flue Gas Emissions from the Burning of Asphaltite and Lignite in a Rotating Head Combustor with Secondary Air Delivery  

Science Journals Connector (OSTI)

(1, 2) In this context, Turkey is rich in coal reserves, and it is among the biggest coal producers in the world with a production of about 76 million tons (Mt) in 2011, and a large portion of this production is lignite. ... (5) Turkey has also a high asphaltite reserve, which is mostly found in the southeastern part of Anatolia and used around the region for domestic heating. ... Modeling of NOx emissions from fluidized Bed combustion of high volatile lignites ...

Cengiz Öner; ?ehmus Altun

2014-06-01T23:59:59.000Z

102

Evaluation of an on-line ash analysis system for low-grade and inhomogeneous Greek lignite  

SciTech Connect (OSTI)

The possibility of using commercial on-line analysis systems for monitoring the ash content of low-grade lignites was investigated by carrying out numerous bench- and pilot-scale trials in the mines of Public Power Corporation SA, Greece. Pilot-scale trials were based on a dual-energy {gamma}-ray transmission analyzer, which was installed on the conveyor belt that transports lignite from the pit to the bunker of Kardia mine, Ptolemais. According to the obtained results, the accuracy of the on-line measurements was not adequate and did not allow lignite quality monitoring in real time. The deterioration of the on-line measurements' accuracy, compared to previous applications in other mining sites, was related to the intense variation of the lignite ash content and ash composition, which distorted the calibration of the analyzer. The latter is based on certain assumptions regarding the average atomic number of the organic and mineral matter contained in the lignite. Further experimental work is needed to investigate solutions for successful implementation of this method to low-grade lignites that exhibit large variation in ash content and composition. 17 refs., 15 figs., 7 tabs.

Konstantinos V. Kavouridis; Francis F. Pavloudakis [Public Power Corporation SA, Athens (Greece). General Division of Mines

2007-08-15T23:59:59.000Z

103

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

Science Journals Connector (OSTI)

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

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

2013-05-24T23:59:59.000Z

104

Mercury Control for Plants Firing Texas Lignite and Equipped with ESP-Wet FGD  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Mercury control for Plants firing Mercury control for Plants firing texas lignite and equiPPed with esP-wet fgd Background The 2005 Clean Air Mercury Rule will require significant reductions in mercury emissions from coal-fired power plants. One promising mercury control technology involves the use of sorbents such as powdered activated carbon. Full-scale sorbent injection tests conducted for various combinations of fuel and plant air pollution control devices have provided a good understanding of variables that affect sorbent performance. However, many uncertainties exist regarding long-term performance, and data gaps remain for specific plant configurations. Sorbent injection has not been demonstrated at full-scale for plants firing Texas lignite coal, which are responsible for about 10 percent of annual U.S. power plant

105

Detailed mining study executive summary: Saba Yoi lignite deposit. Export trade information  

SciTech Connect (OSTI)

The study, conducted by John T. Boyd Company, was funded by the U.S. Trade and Development Agency on behalf of the Electricity Generating Authority of Thailand. The report shows the results of a feasibility study conducted for the development of the Saba Yoi Coal Mine. The study gives an economic assessment of the project, as well as capital costs for mining and materials. This volume contains the Executive Summary and is divided into the following sections: (1) Project Setting; (2) Land Issues; (3) Geological Setting; (4) Lignite Resource Estimate; (5) Mine Design Parameters; (6) Lignite Reserve Estimate; (7) Annual Mine Output; (8) Phase 2: Conceptual Mining Systems Comparison; (9) Phase 3: Mining Plan Economic Assessment; (10) Recommendations; (11) Conclusion.

NONE

1994-07-01T23:59:59.000Z

106

Production of a nitrogeneous humic fertilizer by the oxidation-ammoniation of lignite  

SciTech Connect (OSTI)

Two lignite samples were oxidised with HNO/sub 3/ (20% wt) at 75 C and treated afterwards with NH/sub 3/ in a fluidised-bed reactor in a temperature range 100-375 C. The effects of temperature, NH/sub 3/ flow rate, and reaction time on the total N/sub 2/ content of the product are reported. The product contained 7-13% wt of total N/sub 2/ which increased as the ammoniation temperature increased. Soil nitrification measurements of the N/sub 2/-enriched lignites showed that the maximum conversion to nitrates and rate of nitrification are exhibited by the product obtained at the lowest ammoniation temperature, i.e. 100 C. Maximum conversion to nitrates at that temperature was 45%, which compares well with similar products such as ammoniated peat (35%) and ammonium nitrohumates (45%).

Coca, J.

1984-12-01T23:59:59.000Z

107

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

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

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

108

Potential for selenium migration at a lignite power plant solid waste disposal facility  

E-Print Network [OSTI]

may also adsorb selenite, although in relatively minor amounts. In general, clays serve as an inert substrate for media of higher sorbic potential. Selenium leached from lignite ash initially occurs as selenite or selenate. Redox and p...H measurements suggest selenite and elemental selenium are the only forms of inorganic selenium stable at the study site, Selenate is reduced to selenite or converted to selenide by biosynthesis. Selenite is either adsorbed by the soil or converted...

Hall, Steven Douglas

2012-06-07T23:59:59.000Z

109

Influence of External Clay and Inherent Minerals on Lignite Optical Ignition and Volatile Flame Propagation in Air-Firing and Oxy-Firing  

Science Journals Connector (OSTI)

The coal sample selected is a lignite sample collected from Xinjiang Autonomous Area, the data for which are practically nonexistent because of the low exploration degree, even though such coal contributes approximately 40% of the overall Chinese coal reserves. ... For the devolatilization rate in Table 3 and Figure 2a, the raw lignite has a devolatilisation rate that was lower than those of air-dried and ammonium acetate-washed Victorian brown coal but certainly higher than those of raw Montana lignites, other Chinese lignites, and bituminous coals examined in the literature. ...

Wirhan Prationo; Jian Zhang; Hawra Ali Abdul Abbas; Xiaojiang Wu; Xiaodong Chen; Lian Zhang

2014-01-16T23:59:59.000Z

110

Investigation of lignite and firewood co-combustion in a furnace for tobacco curing application  

SciTech Connect (OSTI)

Co-combustion of lignite and firewood was investigated for an application in tobacco curing industry in Northern Thailand. Extensive experiments have been carried out in a newly developed furnace suitable for small curing unit, in place of locally made furnace. The aim of this investigation is to evaluate the performance of the combustion chamber in the required thermal output range for tobacco curing and to examine the influence of fuel feed rate, fuel mixture ratio and air staging on the combustion and emission characteristics of the furnace during steady state operation. Their effects are characterized in terms of the observed variations of temperature distributions, emissions of CO, SO{sub 2}, CO{sub 2}, O{sub 2} and combustion efficiency. Co-firing of firewood and lignite has been found to exhibit acceptable temperature distribution, high combustion efficiency and low emissions over a wide thermal output span. Stable operation at low (50 kW) and high (150 kW) thermal output was achieved with average CO and SO{sub 2} content in flue gas typically below 1400 and 100 ppm, respectively. Under the conditions considered, it was showed that the fuel feed rate had greater influence on combustion and emissions than firewood and lignite mixture ratio and air staging.

Nakorn Tippayawong; Chutchawan Tantakitti; Satis Thavornun

2006-07-01T23:59:59.000Z

111

Polygeneration-IGCC concepts for the production of hydrogen rich fuels based on lignite  

Science Journals Connector (OSTI)

This paper presents three IGCC-power plant concepts for central production of a hydrogen-rich fuel (methanol, hydrogen, synthetic natural gas â?? SNG) from lignite. Each concept contains a CO2-separation, which produces a sequestration-ready CO2-rich stream. Thus, CO2-emissions caused by use of lignite are considerably reduced. Furthermore, the produced low-carbon fuels are converted in decentralised Combined Heat and Power Plants (CHPP). CHPP leads to high efficiencies of fuel utilisation between 54 and 62%, which exceed the efficiencies of single power generation. Regarding to the CO2-emissions of a natural gas fired CHPP, heat and power can be generated by lignite as clean as by natural gas. The specific CO2-emissions are even much lower in the case of hydrogen production. Costs for the centrally produced methanol and hydrogen are with 29 and 19 EUR/MWh(LHV) already within an economic range. Synthetic natural gas can be produced for 23 EUR/MWh(LHV).

Bernd Meyer; Katrin Ogriseck

2007-01-01T23:59:59.000Z

112

Production scheduling of a lignite mine under quality and reserves uncertainty  

Science Journals Connector (OSTI)

The effect of uncertainty sources to the stochastic optimization of the combined project of a new surface lignite mine exploitation and power plant operation for electricity generation is investigated. Major sources of uncertainty that were considered are the reserves and the quality of the lignite. Since probability distribution functions for these uncertainties were estimated during the detailed exploration phase of the deposit, the overall goal is then to determine the optimal capacity of the power plant and consequently the optimal production rate of the mine over the time. The optimization objective that was selected is the maximization of the net present value of the project. Emphasis is placed on the sensitivity analysis for the investigation of the effect of quality and reserves uncertainty on project optimization, on the mathematical formulation of risk attitude strategy and on increasing the efficiency of the optimization process by creating a limited set of feasible solutions applying empirical rules. The developed methodology was applied for the determination of the optimal annual production rate of a new surface lignite mine in the area of Ptolemais–Amynteon in Northern Greece.

Michael Galetakis; Christos Roumpos; George Alevizos; Despina Vamvuka

2011-01-01T23:59:59.000Z

113

Reprint of: Production scheduling of a lignite mine under quality and reserves uncertainty  

Science Journals Connector (OSTI)

The effect of uncertainty sources to the stochastic optimization of the combined project of a new surface lignite mine exploitation and power plant operation for electricity generation is investigated. Major sources of uncertainty that were considered are the reserves and the quality of the lignite. Since probability distribution functions for these uncertainties were estimated during the detailed exploration phase of the deposit, the overall goal is then to determine the optimal capacity of the power plant and consequently the optimal production rate of the mine over the time. The optimization objective that was selected is the maximization of the net present value of the project. Emphasis is placed on the sensitivity analysis for the investigation of the effect of quality and reserves uncertainty on project optimization, on the mathematical formulation of risk attitude strategy and on increasing the efficiency of the optimization process by creating a limited set of feasible solutions applying empirical rules. The developed methodology was applied for the determination of the optimal annual production rate of a new surface lignite mine in the area of Ptolemais–Amynteon in Northern Greece.

Michael Galetakis; Christos Roumpos; George Alevizos; Despina Vamvuka

2012-01-01T23:59:59.000Z

114

Coal petrography, mineralogy and geochemistry of lignite samples from the Ogwashi–Asaba Formation, Nigeria  

Science Journals Connector (OSTI)

Organic sediments picked up randomly from seven small outcrops within the Ogwashi–Asaba Formation, southern Nigeria, are examined and evaluated by means of coal petrology and chemical and mineralogical analyses in order to determine the palaeoenvironmental conditions and the factors controlling their formation. Six samples proved to be low-rank coals C to B (lignite), one carbonaceous shale. The lignite samples display low ash yield, low telohuminite and high detrohuminite and liptinite contents; they contain small amounts of clastic minerals, mainly quartz and clays, which point to the topogenous character of the depositional palaeoenvironment. The palaeomires formed in a continental basin crossed by the mid-Tertiary palaeo-Niger River; the latter, as well as the tropical rainfall supplied the mires with water. The dense vegetation cover on the mire surface and the surroundings and/or the low relief energy of the broad area restricted the inorganic influx resulting in high-grade coal formation. As the outcrops are distributed over a distance of 60 km, the expected reserves of good quality lignite constitute a very promising exploration target.

Jude Ogala; George Siavalas; Kimon Christanis

2012-01-01T23:59:59.000Z

115

Enhancing Carbon Reactivity in Mercury Control in Lignite-Fired Systems  

SciTech Connect (OSTI)

This project was awarded through the U.S. Department of Energy (DOE) National Energy Technology Laboratory Program Solicitation DE-PS26-03NT41718-01. The Energy & Environmental Research Center (EERC) led a consortium-based effort to resolve mercury (Hg) control issues facing the lignite industry. The EERC team-the Electric Power Research Institute (EPRI); the URS Corporation; the Babcock & Wilcox Company; ADA-ES; Apogee; Basin Electric Power Cooperative; Otter Tail Power Company; Great River Energy; Texas Utilities; Montana-Dakota Utilities Co.; Minnkota Power Cooperative, Inc.; BNI Coal Ltd.; Dakota Westmoreland Corporation; the North American Coal Corporation; SaskPower; and the North Dakota Industrial Commission-demonstrated technologies that substantially enhanced the effectiveness of carbon sorbents to remove Hg from western fuel combustion gases and achieve a high level ({ge} 55% Hg removal) of cost-effective control. The results of this effort are applicable to virtually all utilities burning lignite and subbituminous coals in the United States and Canada. The enhancement processes were previously proven in pilot-scale and limited full-scale tests. Additional optimization testing continues on these enhancements. These four units included three lignite-fired units: Leland Olds Station Unit 1 (LOS1) and Stanton Station Unit 10 (SS10) near Stanton and Antelope Valley Station Unit 1 (AVS1) near Beulah and a subbituminous Powder River Basin (PRB)-fired unit: Stanton Station Unit 1 (SS1). This project was one of three conducted by the consortium under the DOE mercury program to systematically test Hg control technologies available for utilities burning lignite. The overall objective of the three projects was to field-test and verify options that may be applied cost-effectively by the lignite industry to reduce Hg emissions. The EERC, URS, and other team members tested sorbent injection technologies for plants equipped with electrostatic precipitators (ESPs) and spray dryer absorbers combined with fabric filters (SDAs-FFs). The work focused on technology commercialization by involving industry and emphasizing the communication of results to vendors and utilities throughout the project.

Chad Wocken; Michael Holmes; John Pavlish; Jeffrey Thompson; Katie Brandt; Brandon Pavlish; Dennis Laudal; Kevin Galbreath; Michelle Olderbak

2008-06-30T23:59:59.000Z

116

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

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

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

2014-08-19T23:59:59.000Z

117

Effect of High-Pressure Impregnation on Structure Variation and Desulfurization Property of a Zn-Based Sorbent Prepared Using Lignite as a Support  

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Effect of High-Pressure Impregnation on Structure Variation and Desulfurization Property of a Zn-Based Sorbent Prepared Using Lignite as a Support ... Lignite reserves are relatively abundant in China; however, its utilization is significantly limited because of its high water content and low calorific value. ...

Xiurong Ren; Qiang He; Yurong Dong; Meijun Wang; Liping Chang; Weiren Bao

2014-06-10T23:59:59.000Z

118

Impacts of stripmining lignite on net returns for agricultural enterprises in East Texas  

E-Print Network [OSTI]

. Southern Methodist University Chairman of Advisory Committee: Dr, Lonnie L. Jones The study aims to determine whether or not returns to typical pare-time and full-time farms in Preestone County change after lignite mining. Net returns used are to land... pieces of mined and unmined land. The general opinion of experts is that forage yields on reclaimed land are not less than before mining. Although the carrying capacity for unmined and reclaimed pasture is the same in the study, the mined farm cases...

Morris, Christina

1984-01-01T23:59:59.000Z

119

Effect of potassium permanganate as an oxidizing agent in the production of lignite-based fertilizers  

SciTech Connect (OSTI)

The purpose of this work was to observe the effect of potassium permanganate oxidation of lignites from Elbistan for end use as fertilizers, after being ammoniated. The experiments at each stage were designed by a 1/2 x full factorial design. The oxidation was carried out by three different methods. In the first two methods potassium permanganate in neutral or basic medium was used. In the other method two stages of oxidation were used: nitric acid followed by potassium permanganate in acidic medium. The latter proved to be more successful.

Baris, S.; Dincer, S.

1986-01-01T23:59:59.000Z

120

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

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

Stefan Kern; Christoph Pfeifer; Hermann Hofbauer

2013-01-15T23:59:59.000Z

Note: This page contains sample records for the topic "bitu subbitu lignite" 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

Characterization of Solid Emissions from Atmospheric Fluidized-Bed Combustion of Two Czech Lignites  

Science Journals Connector (OSTI)

In fluidized-bed combustion, particles of coal burn within the bed of vigorously moving smaller inert particles with bed temperatures between 1000 and 1300 K. Due to intense heat transfer from the burning particle to bed particles and percolating gas, the temperature of a particle is on average 200 K above that of the bed (29, 30). ... Two lignites from the Centrum mine and the Vršany open pit mine (North Bohemian Coal Basin) were used in this study. ... The reactor is equipped with a supplementary natural gas burner, a feeding system, and measuring and control peripherals. ...

Ji?í Smolík; Jaroslav Schwarz; Václav Veselý; Ivana Sýkorová; Jan Kuc?era; Vladimír Havránek

1999-09-01T23:59:59.000Z

122

Identification of organonitrogen compounds from thermally dissolved Huolinguole lignite in ethanol  

Science Journals Connector (OSTI)

Thermal dissolution of Huolinguole lignite (HL) in ethanol was conducted at 330°C for 2 h. The soluble fraction was sequentially eluted with petroleum ether (PE), ethyl acetate (EA)/PE mixed solvents with increased EA to PE ratio, and EA to afford five eluted fractions (EF1-EF5) through a silica gel-packed column. In total, 49 organonitrogen compounds (ONCs), including N-heterohexacyclic compounds (NHHCCs), N-heteropentacyclic compounds, nitrogen-containing group-substituted benzenes (NCGSBs), condensed N-heterocyclic compounds, and amides were detected in EF2 and EF3 with a gas chromatography/mass spectrometer. Among the ONCs, NHHCCs are dominant and most of them are alkyl pyridines (APs), suggesting that APs are the main existing modes of ONCs in HL. As the main NCGSBs, anilines may originally exist in HL or were released by HL ethanolysis. This investigation provides an effective approach for understanding the modes of ONC occurrences in lignites. [Received: April 11, 2013; Accepted: February 20, 2014

Yu-Gao Wang; Xian-Yong Wei; Hong-Lei Yan; Zhi-Min Zong

2014-01-01T23:59:59.000Z

123

Correlation of lignites in the midway and Wilcox groups of southern Alabama and eastern Mississippi  

SciTech Connect (OSTI)

The Gulf Coast Paleogene section represents one of the world's most continuous records of cyclic nonmarine through marine sedimentation. Microfossil research has demonstrated the completeness of downdip marine sections; however, the continuity of updip, nonmarine, and marginal marine sections remains relatively uncertain. Lignites occur throughout the Gulf Coast low Paleogene, but to date have not been adequately characterized with the detail necessary for high-resolution correlation. Lignite characteristics, stratigraphic position within Paleogene depositional cycles, and their mode of origin can be used in correlating nonmarine deposits (highstand system tract) to downdip marine deposits (transgressive system tract). Samples were collected for east-central Mississippi and west-central Alabama and analyzed. Principle constituents, comprising over 50%, are inaperturate forms in Midway Group samples and tricolporate forms in Wilcox Group samples. Secondary components, 10-20%, of triporate and monolete/trilete forms occur in both groups. Triporate forms are approximately 25% more abundant in the Wilcox Group samples, whereas monolete/trilete forms remain relatively constant in both groups. Minor components ([le]5%) of bivesticulate, tricolpate, polycolpate, polyporate, and polycolporate forms are present, but show distinct percentage variations between each group. Inaperature forms are present only in the Midway Group and monoporate forms exist only in the Wilcox Group. These group-specific forms, combined with the differences in primary and secondary forms and abundances, allow samples to be formationally assigned base on palynomorpbic signature.

Harrison, D.W. (Univ. of Alabama, Tuscaloosa, AL (United States))

1993-09-01T23:59:59.000Z

124

JV Task 117 - Impact of Lignite Properties on Powerspan's NOx Oxidation System  

SciTech Connect (OSTI)

Powerspan's multipollutant control process called electrocatalytic oxidation (ECO) technology is designed to simultaneously remove SO{sub 2}, NO{sub x}, PM{sub 2.5}, acid gases (such as hydrogen fluoride [HF], hydrochloric acid [HCl], and sulfur trioxide [SO{sub 3}]), Hg, and other metals from the flue gas of coal-fired power plants. The core of this technology is a dielectric barrier discharge reactor composed of cylindrical quartz electrodes residing in metal tubes. Electrical discharge through the flue gas, passing between the electrode and the tube, produces reactive O and OH radicals. The O and OH radicals react with flue gas components to oxidize NO to NO{sub 2} and HNO{sub 3} and a small portion of the SO{sub 2} to SO{sub 3} and H{sub 2}SO{sub 4}. The oxidized compounds are subsequently removed in a downstream scrubber and wet electrostatic precipitator. A challenging characteristic of selected North Dakota lignites is their high sodium content. During high-sodium lignite combustion and gas cooling, the sodium vaporizes and condenses to produce sodium- and sulfur-rich aerosols. Based on past work, it was hypothesized that the sodium aerosols would deposit on and react with the silica electrodes and react with the silica electrodes, resulting in the formation of sodium silicate. The deposit and reacted surface layer would then electrically alter the electrode, thus impacting its dielectric properties and NO{sub x} conversion capability. The purpose of this project was to determine the impact of lignite-derived flue gas containing sodium aerosols on Powerspan's dielectric barrier discharge (DBD) reactor with specific focus on the interaction with the quartz electrodes. Partners in the project were Minnkota Power Cooperative; Basin Electric Power Cooperative; Montana Dakota Utilities Co.; Minnesota Power; the North Dakota Industrial Commission, the Lignite Energy Council, and the Lignite Research Council; the Energy & Environmental Research Center (EERC); and the U.S. Department of Energy. An electrocatalytic oxidation (ECO) reactor slipstream system was designed by Powerspan and the EERC. The slipstream system was installed by the EERC at Minnkota Power Cooperative's Milton R. Young Station Unit 1 downstream of the electrostatic precipitator where the flue gas temperature ranged from 300 to 350 F. The system was commissioned on July 3, 2007, operated for 107 days, and then winterized upon completion of the testing campaign. Operational performance of the system was monitored, and data were archived for postprocessing. A pair of electrodes were extracted and replaced on a biweekly basis. Each pair of electrodes was shipped to Powerspan to determine NO conversion efficiency in Powerspan's laboratory reactor. Tested electrodes were then shipped to the EERC for scanning electron microscopy (SEM) and x-ray microanalysis. Measurement of NO{sub x} conversion online in operating the slipstream system was not possible because the nitric and sulfuric acid production by the DBD reactor results in conditioning corrosion challenges in the sample extraction system and NO measurement technologies. The operational observations, performance results, and lab testing showed that the system was adversely affected by accumulation of the aerosol materials on the electrode. NO{sub x} conversion by ash-covered electrodes was significantly reduced; however, with electrodes that were rinsed with water, the NOx conversion efficiency recovered to nearly that of a new electrode. In addition, the visual appearance of the electrode after washing did not show evidence of a cloudy reacted surface but appeared similar to an unexposed electrode. Examination of the electrodes using SEM x-ray microanalysis showed significant elemental sodium, sulfur, calcium, potassium, and silica in the ash coating the electrodes. There was no evidence of the reaction of the sodium with the silica electrodes to produce sodium silicate layers. All SEM images showed a clearly marked boundary between the ash and the silica. Sodium and sulfur are the main culprits in the

Scott Tolbert; Steven Benson

2008-02-29T23:59:59.000Z

125

The natural radioactivity contents in feed coals from the lignite-fired power plants in Western Anatolia, Turkey  

Science Journals Connector (OSTI)

......mineral matter contents than other Tertiary coals. Therefore, they have been consumed...total capacity of 1680 MW. The Soma coal basin is one of the largest economic lignite basins of western Turkey. Coal mining has been practised in this region......

N. Füsun Çam; Günseli Yaprak; Elif Eren

2010-12-01T23:59:59.000Z

126

Carbon Dioxide Emissions from Coal-Fired Power Plants in Greece in Relation to Mined Lignite Quality  

Science Journals Connector (OSTI)

Carbon dioxide emissions were shown to vary with the calorific value and carbonate content of lignite burned at three large power plants. ... The annual carbon dioxide emissions, Q, in a lignite-fired power plant can be calculated on the basis of the total carbon mass balance, using the following formula:(18)Specific emission factor, Qs, expressed in tons of CO2 generated per MW h is given bywhere Q is the annual CO2 emissions (in tons), Qs is the specific CO2 emissions (in tons MW?1 h?1), L is the annual lignite consumption (in tons/year), CL is the total carbon content of lignite on an as-received basis (%), W is the annual production of bottom ash ( in tons/year), CW is the total carbon content of bottom ash on an as-received basis (%), F is the annual production of fly ash (in tons/year), CF is the total carbon content of fly ash on an as-received basis (%), and E is the annual production of electricity ( in MW h). ... The carbon dioxide emitted as a product of combustion of coal (fossil fuels) is currently responsible for over 60% of the enhanced greenhouse effect. ...

Despina Vamvuka; Michael Galetakis

2009-12-04T23:59:59.000Z

127

Air and oxy-fuel combustion behaviour of petcoke/lignite blends  

Science Journals Connector (OSTI)

The pyrolysis and combustion behaviour of a petroleum coke (petcoke), an indigenous lignite and their 70/30 wt.% blend in air and oxy-fuel conditions were investigated by using non-isothermal thermo-gravimetric method (TGA) coupled with Fourier transform infrared (FTIR) spectrometer. Blend samples were prepared by mixing lignite, which has low calorific value, high ash and moisture contents with petcoke that has high calorific value, low ash and moisture content, in the proportion of 70:30. Pyrolysis tests were carried out in nitrogen and carbon dioxide environments which are the main diluting gases of air and oxy-fuel environments, respectively. Pyrolysis curves of parent fuels and their blend reveal close resemblance up to 700 °C in both N2 and CO2 environments. At higher temperatures, further weight loss taking place in N2 and CO2 atmospheres is attributed to calcite decomposition and CO2-char gasification reaction, respectively. Gasification reaction leads to significant increase in CO and COS formation as observed in FTIR evolution profiles. Almost identical experimental and theoretical pyrolysis profiles of the blend samples show that there is no synergy between the parent fuels of the blend in both pyrolysis environments. Combustion experiments were carried out in four different atmospheres; air, oxygen-enriched air environment (30% O2–70% N2), oxy-fuel environment (21% O2–79% CO2) and oxygen-enriched oxy-fuel environment (30% O2–70% CO2). Combustion experiments show that replacing nitrogen in the gas mixture by the same concentration of CO2 leads to delay in combustion (lower maximum rate of weight loss and higher burnout temperatures). Overall comparison of derivative thermogravimetry (DTG) profiles shows that effect of oxygen content on combustion characteristics is more significant than that of diluting gas in the combustion environment. At elevated oxygen levels, profiles shift through lower temperature zone, peak and burnout temperatures decrease, weight loss rate increases significantly and complete combustion is achieved at lower temperatures and shorter times. Theoretical and experimental combustion profiles of the blend mainly display different trends, which indicate synergistic interactions between lignite and petcoke during their combustion in different environments.

Nur Sena Yuzbasi; Nevin Selçuk

2012-01-01T23:59:59.000Z

128

Energy Evaluation for Lignite Pyrolysis by Solid Heat Carrier Coupled with Gasification  

Science Journals Connector (OSTI)

Between the two reactors, solid heat carriers are circulated to carry the heat from the gasifier to the pyrolyzer. ... With the purpose of revealing the features of energy use and chemical element conversion, and the feasibility and the rationality of the coupled system, some related experiments were performed, and the simulation flow sheet for lignite pyrolysis by a solid heat carrier coupled with gasification was established by Aspen Plus 11.1 on the basis of the experimental data. ... The amount of the solid heat carrier was determined by two factors: (1) the temperature of the solid heat carrier should be heated to 750 °C in the combustion furnace; (2) the energy carried by the solid heat carrier must be sufficient to satisfy the energy demands of the drying and pyrolysis units. ...

Qun Yi; Jie Feng; Bingchuan Lu; Jing Deng; Changlian Yu; Wenying Li

2013-07-12T23:59:59.000Z

129

Copyrolysis of Seyitömer?Lignite and Safflower Seed:? Influence of the Blending Ratio and Pyrolysis Temperature on Product Yields and Oil Characterization  

Science Journals Connector (OSTI)

The use of a variety of low-grade coal, as a primary energy source is becoming a subject of importance in some countries, such as Turkey, where there is a substantial reserve of such materials. ... Total lignite reserves are estimated with 8075 million tons, of which 7339 million tons are economically feasible. ... Upgrading of Kutahya region lignites by mild pyrolysis and high intensity dry magnetic separation ...

Özlem Onay; Evren Bayram; Ö. Mete Koçkar

2007-08-07T23:59:59.000Z

130

Simulation study on lignite-fired power system integrated with flue gas drying and waste heat recovery – Performances under variable power loads coupled with off-design parameters  

Science Journals Connector (OSTI)

Abstract Lignite is a kind of low rank coal with high moisture content and low net heating value, which is mainly used for electric power generation. However, the thermal efficiency of power plants firing lignite directly is very low. Pre-drying is a proactive option, dehydrating raw lignite to raise its heating value, to improve the power plant thermal efficiency. A pre-dried lignite-fired power system integrated with boiler flue gas drying and waste heat recovery was proposed in this paper. The plant thermal efficiency could be improved by 1.51% at benchmark condition due to pre-drying and waste heat recovery. The main system performances under variable power loads were simulated and analyzed. Simulation results show that the improvement of plant thermal efficiency reduced to 1.36% at 50% full load. Moreover, the influences of drying system off-design parameters were simulated coupled with power loads. The variation tendencies of main system parameters were obtained. The influence of pre-drying degree (including moisture content of pre-dried lignite and raw lignite) on the plant thermal efficiency diminishes gradually with the decreasing power load. The dryer thermal efficiency and dryer exhaust temperature are also main factors and the influences on system parameters have been quantitatively analyzed.

Xiaoqu Han; Ming Liu; Jinshi Wang; Junjie Yan; Jiping Liu; Feng Xiao

2014-01-01T23:59:59.000Z

131

The distribution of ten trace elements and minerals in three lignite seams from the Mae Moh Mine, Thailand  

SciTech Connect (OSTI)

Understanding the association of major, minor and trace elements in lignites and their accompanying strata is important from a number of perspectives which include: potential health problems from environmental pollutants, rehabilitation after mining, combustion for power etc. The material which follows represents some preliminary observations on the mineralogy and distribution of 10 trace elements in lignites and accompanying sediments from the Mae Moh mine, Thailand. Samples collected from freshly exposed mine faces were air dried and analyzed for moisture and ash. Trace element concentrations were determined on {open_quotes}whole{close_quotes} coals and sediments by NAA and XRF. All chemical analyses are expressed as a fraction of the total dry sediment. Mineralogy of both LTA and sediments was determined by XRD. The chemistry and morphology of individual particles were examined by the Electron microprobe. The analyses are used to make some conclusions about the spatial occurrence of these elements within the seam and their partitioning between organic and inorganic phases.

Hart, B.; Powell, M.P.; Fyfe, W.S. [Univ. of Ontario (Canada)

1994-12-31T23:59:59.000Z

132

The effect of quality and reserves uncertainty to production scheduling of a lignite mine feeding a power plant  

Science Journals Connector (OSTI)

The effect of uncertainty sources to the stochastic optimization of the combined project of a new surface lignite mine exploitation and power plant operation for electricity generation is investigated. Major sources of uncertainty that were considered are the reserves and the quality of the lignite. Since probability distribution functions for these uncertainties were estimated during the detailed exploration phase of the deposit, the overall goal is then to determine the optimal capacity of the power plant and consequently the optimal production rate of the mine over the time. The optimization objective that was selected is the maximization of the expected net present value of the project. Emphasis is placed on the mathematical analysis applied for the investigation of the effect of the two main parameters in project optimization.

Michael Galetakis; Christos Roumpos

2010-01-01T23:59:59.000Z

133

Large-Scale Mercury Control Technology Testing for Lignite-Fired Utilities - Oxidation Systems for Wet FGD  

SciTech Connect (OSTI)

Mercury (Hg) control technologies were evaluated at Minnkota Power Cooperative's Milton R. Young (MRY) Station Unit 2, a 450-MW lignite-fired cyclone unit near Center, North Dakota, and TXU Energy's Monticello Steam Electric Station (MoSES) Unit 3, a 793-MW lignite--Powder River Basin (PRB) subbituminous coal-fired unit near Mt. Pleasant, Texas. A cold-side electrostatic precipitator (ESP) and wet flue gas desulfurization (FGD) scrubber are used at MRY and MoSES for controlling particulate and sulfur dioxide (SO{sub 2}) emissions, respectively. Several approaches for significantly and cost-effectively oxidizing elemental mercury (Hg{sup 0}) in lignite combustion flue gases, followed by capture in an ESP and/or FGD scrubber were evaluated. The project team involved in performing the technical aspects of the project included Babcock & Wilcox, the Energy & Environmental Research Center (EERC), the Electric Power Research Institute, and URS Corporation. Calcium bromide (CaBr{sub 2}), calcium chloride (CaCl{sub 2}), magnesium chloride (MgCl{sub 2}), and a proprietary sorbent enhancement additive (SEA), hereafter referred to as SEA2, were added to the lignite feeds to enhance Hg capture in the ESP and/or wet FGD. In addition, powdered activated carbon (PAC) was injected upstream of the ESP at MRY Unit 2. The work involved establishing Hg concentrations and removal rates across existing ESP and FGD units, determining costs associated with a given Hg removal efficiency, quantifying the balance-of-plant impacts of the control technologies, and facilitating technology commercialization. The primary project goal was to achieve ESP-FGD Hg removal efficiencies of {ge}55% at MRY and MoSES for about a month.

Steven A. Benson; Michael J. Holmes; Donald P. McCollor; Jill M. Mackenzie; Charlene R. Crocker; Lingbu Kong; Kevin C. Galbreath

2007-03-31T23:59:59.000Z

134

Plant mixtures and monocultures on topsoiled and nontopsoiled lignite spoil in the Post Oak Savannah of Texas  

E-Print Network [OSTI]

SG SC IB LB SW SG BG IG SG CB IB SC TOPSOIL 6m TEST PIT . Figure 2. Plot diagram and side view of Dow Chemical lignite test pit. BG - Bahiagrass CB ? Coastal bermudagrass , IB - Illinois Bundleflower IG ? Indiangrass LB ? Little bluestem.... Brown, whose assistance and insight on this research proved invaluable. I gratefully acknowledge Northwestern Resources Co. for providing the financial support, and Dow Chemical Co, for providing the study site for this project. Special thanks...

Van Hook, Kevin

2012-06-07T23:59:59.000Z

135

PILOT-AND FULL-SCALE DEMONSTRATION OF ADVANCED MERCURY CONTROL TECHNOLOGIES FOR LIGNITE-FIRED POWER PLANTS  

SciTech Connect (OSTI)

North Dakota lignite-fired power plants have shown a limited ability to control mercury emissions in currently installed electrostatic precipitators (ESPs), dry scrubbers, and wet scrubbers (1). This low level of control can be attributed to the high proportions of Hg{sup 0} present in the flue gas. Speciation of Hg in flue gases analyzed as part of the U.S. Environmental Protection Agency (EPA) information collection request (ICR) for Hg data showed that Hg{sup 0} ranged from 56% to 96% and oxidized mercury ranged from 4% to 44%. The Hg emitted from power plants firing North Dakota lignites ranged from 45% to 91% of the total Hg, with the emitted Hg being greater than 85% elemental. The higher levels of oxidized mercury were only found in a fluidized-bed combustion system. Typically, the form of Hg in the pulverized and cyclone-fired units was dominated by Hg{sup 0} at greater than 85%, and the average amount of Hg{sup 0} emitted from North Dakota power plants was 6.7 lb/TBtu (1, 2). The overall objective of this Energy & Environmental Research Center (EERC) project is to develop and evaluate advanced and innovative concepts for controlling Hg emissions from North Dakota lignite-fired power plants by 50%-90% at costs of one-half to three-fourths of current estimated costs. The specific objectives are focused on determining the feasibility of the following technologies: Hg oxidation for increased Hg capture in wet and dry scrubbers, incorporation of additives and technologies that enhance Hg sorbent effectiveness in ESPs and baghouses, the use of amended silicates in lignite-derived flue gases for Hg capture, and the use of Hg adsorbents within a baghouse. The scientific approach to solving the problems associated with controlling Hg emissions from lignite-fired power plants involves conducting testing of the following processes and technologies that have shown promise on a bench, pilot, or field scale: (1) activated carbon injection (ACI) upstream of an ESP combined with sorbent enhancement, (2) Hg oxidation and control using wet and dry scrubbers, (3) enhanced oxidation at a full-scale power plant using tire-derived fuel (TDF) and oxidizing catalysts, and (4) testing of Hg control technologies in the Advanced Hybrid{trademark} filter insert.

Steven A. Benson; Charlene R. Crocker; Kevin C. Galbreath; Jay R. Gunderson; Mike J. Holmes; Jason D. Laumb; Michelle R. Olderbak; John H. Pavlish; Li Yan; Ye Zhuang; Jill M. Zola

2004-02-01T23:59:59.000Z

136

Effect of environment atmosphere on the sintering of Thai lignite fly ashes  

SciTech Connect (OSTI)

Sintering of ash particles, related to deposit formation in a pulverized coal-fired boiler, was investigated for two lignite fly ashes obtained from Mae Moh and Bangpudum coal seams. The tests involved measuring the compressive strength of cold sintered pellets at varying sintering temperature, both under oxidizing (air) and non-oxidizing atmospheres (CO{sub 2}). Under ambient air condition, Mae Moh fly ash which contained higher amount of glassy phase gave significantly higher sinter strength than Bangpudum fly ash. The role of glassy phase was confirmed by the lowering of sinter strength when HF-extracted fly ash was tested. Sintering under CO{sub 2} environment resulted in larger strength development than sintering in air. Under this non-oxidizing condition, the pellet color turned black, indicating that most of the iron was in the reduced state and could form additional low melting-point glassy phase, hence facilitated sintering rate. In addition, blending of the two ashes yielded intermediate maximum strength, under both air and CO{sub 2} environments. This observation substantiates the important role of glassy phase in the sintering process and indicates the possibility of lowering deposit strength by judicious mixing of different raw coal feeds.

Tangsathitkulchai, C.; Tangsathitkulchai, M. [Suranaree Univ. of Technology, Nakhon Ratchasima (Thailand)

1996-12-31T23:59:59.000Z

137

Dragonflies of freshwater pools in lignite spoil heaps: Restoration management, habitat structure and conservation value  

Science Journals Connector (OSTI)

Although numerous studies of several terrestrial groups have revealed high conservation potential of post-industrial sites, freshwater habitats in post-mining sites still remain little explored. Here we present a study of dragonflies (Odonata) colonizing 61 freshwater pools newly established at 9 lignite spoil heaps in the north-western Czech Republic, Central Europe. We aimed mainly on effects of the three prevailing pool restoration methods (spontaneously inundated depressions at non-reclaimed sites, at reclaimed sites; and novel technically constructed ponds) along with several factors of the local habitat and surrounding landscape on species richness, conservation values, and species composition of the dragonfly communities. By recording of 32 species of lentic dragonflies (including 8 threatened ones) and 2 additional threatened lotic species, we documented the conservation value of post-industrial habitats also for aquatic arthropods. None of the three restoration methods supported dragonfly communities of distinctly higher conservation value then did the two others, each method generated habitats for different threatened species. Similar patterns were revealed also for vegetation heterogeneity, bottom substrate, water shading, and surrounding terrestrial habitats. We thus conclude that a mosaic-like combination of the restoration methods and creating of heterogeneous water pools will be most effective for restoring of freshwater biodiversity in highly degraded sites.

Filip Harabiš; Filip Tichanek; Robert Tropek

2013-01-01T23:59:59.000Z

138

Vegetation trends in reclaimed areas at Gibbons Creek Lignite Mine, Grimes County, Texas  

SciTech Connect (OSTI)

Vegetation productivity and cover studies have been conducted annually at the Gibbons Creek Lignite Mine since 1989, and multiple annual clippings have been collected since 1991. The primary purpose of these studies was to examine revegetation success, in terms of herbaceous productivity, for various post-mine soil types. However, the studies also contain detailed information on species composition. For the years in which multiple annual clippings have been collected (1991 through 1996), total vegetation cover increased, with the mean proportion of bare ground dropping from 12% in 1991 to 1% in 1996. Relative proportions of most introduced and native grasses were virtually static from 1991 through 1994; in 1995, however, herbicide applications to reduce clover cover resulted in a dramatic increase in total grass cover, especially in bahiagrass (Paspalum notatum) and Indiangrass (Sorgastrum nutans). In contrast to the trends of other introduced and native grasses, bahiagrass increased in cover throughout the study period, increasing from 7% in 1991 to 21 % in 1996. Annual and weedy grass species decreased in cover throughout the study period, falling from 12% cover in 1991 to 2% in 1996. This trend of displacement of annuals by perennials is typically observed during ecological succession in natural vegetation communities, and appears to have been accelerated by the herbicide application.

Westerman, C.A. [Morrison Knudsen Corp., San Antonio, TX (United States)

1997-12-31T23:59:59.000Z

139

Coal facies in a Cenozoic paralic lignite bed, Krabi Basin, southern Thailand: Changing peat-forming conditions related to relative sea-level controlled watertable variations  

Science Journals Connector (OSTI)

The Cenozoic Krabi Basin in the southern part of peninsular Thailand contains about 112 million tons proven coal reserves. At present, coal is only produced from the Bang Mark mine located in the southern part of the basin, where the main lignite bed is 7–20 m thick. The lignite bed occurs in an overall paralic succession. The present paper investigates the depositional conditions of an approximately 8 m thick lignite bed (main seam) in the Bang Mark mine using organic petrography, including maceral ratios, and geochemistry. The results are further interpreted in a sequence stratigraphic context. The lignite is of low rank and is completely dominated by huminite indicating generally oxygen-deficient conditions in the precursor mire. Very low inertinite contents suggest rare occurrences of wildfires. The lower part of the lignite bed represents a topogenous fresh water peat mire with open water areas that in few cases may have experienced influx of saline water. The peat mire was subjected to periodic inundations and deposition of siliciclastics. Tissue preservation was relatively poor. The upper part of the lignite bed represents a slightly domed fresh water ombrogenous peat mire with a stable watertable and a balance between peat accumulation and accommodation space creation that favoured preservation of plant tissues. In general, the mire vegetation changed from less woody in the topogenous mire to more arborescent in the ombrogenous mire, where plants with suberinised wood cell walls also were more frequent. Decompacted, the lignite bed corresponds to a minimum ~ 11 m thick peat deposit that records from ~ 22,000 to 55,000 years of peat accumulation. Watertable rise in the peat mire was controlled overall by relative sea-level rise. In a sequence stratigraphic context, the lignite bed overlies a terrestrialisation surface (TeS; sensu Diessel, 2007) and the lowermost part records peat formation during a falling watertable and a decreasing accommodation/peat accumulation ratio (terrestrialisation). An accommodation reversal surface (ARS; sensu Diessel, 2007) indicates a change to paludification style of peat formation characterised by rising watertable and a high accommodation/peat accumulation ratio. Another ARS marks a gradual change to a situation with a balanced accommodation/peat accumulation ratio. The overall watertable rise throughout peat formation, but at a gradually slower rate from base to top, suggests that the lignite bed could be located in the late transgressive systems tract (TST).

H.I. Petersen; B. Ratanasthien

2011-01-01T23:59:59.000Z

140

Gasification of lignite in a fixed bed reactor: Influence of particle size on performance of downdraft gasifier  

Science Journals Connector (OSTI)

Abstract In this work, an experimental study of the gasification of lignite with various particle sizes was carried out in a pilot-scale (10 kWe) downdraft type fixed bed gasifier. The main objective of the study was to investigate the feasibility of the lignite as a fuel for downdraft gasifier and to evaluate the effect of the particle size on gasifier performance. The influence of the particle size on fuel consumption rate, temperature profile in various zone, gas yield, gas composition and cold gas efficiency was studied. Six different particle sizes viz. 13–16 mm, 16–19 mm, 19–22 mm, 22–25 mm, 25–28 mm, 28–31 mm were selected for experimental work. With the increase in particle size, the reduction in fuel consumption rate was observed, whereas the producer gas production rate had increased. The heating value of the gas increased as particle size increased from 13–16 mm to 22–25 mm and then same had decreased with increase in particle size. Higher temperature in reduction zone resulted in higher H2 and CO contents in producer gas. Under the experiment conditions, the fuel consumption rate, gas yields, LHV (Lower heating value) of gas fuel and cold gas efficiency varied in the range of 9.58–10.67 kg/hr, 2.43–2.63 Nm3/kg, 3.33–4.17 MJ/Nm3 and 51.5%–65.7% respectively. The experimental results showed that the gasification performance was better with lignite particle size of 22–25 mm.

Vimal R. Patel; Darshit S. Upadhyay; Rajesh N. Patel

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "bitu subbitu lignite" 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

Transformation of alkali metals during pyrolysis and gasification of a lignite  

SciTech Connect (OSTI)

Transformation of Na and K in a lignite was investigated during pyrolysis and gasification in a fixed-bed by using a serial dissolution method with H{sub 2}O, CH{sub 3}COONH{sub 4}, and HCl solutions. The evolution of the fractions of four forms in solid and alkali volatilization during pyrolysis and gasification was determined. The results show that a different mode of occurrence between Na and of K in coal existed. Na in coal can be nearly completely dissolved by H{sub 2}O, CH{sub 3}COONH{sub 4}, and HCl solution. However, K in coal exists almost in the stable forms. Both H{sub 2}O soluble and CH{sub 3}COONH{sub 4} soluble Na and K fractions decline during pyrolysis and early gasification stage and increase a little with the process of char gasification. The stable form Na in the char produced during pyrolysis is transferred to other forms during char gasification via the pore opening and a series of chemical reactions. Na{sub 2}SO{sub 4} (K{sub 2}SO{sub 4}) may play an important role in producing stable forms such as Na{sub 2}O.Al{sub 2}O{sub 3}2SiO{sub 2} and K{sub 2}O.Al{sub 2}O{sub 3}.2SiO{sub 2} during pyrolysis. The fraction of HCl soluble K increases during pyrolysis but decreases markedly during the early gasification stage. 20 refs., 7 figs., 1 tabs.

Xiaofang Wei; Jiejie Huang; Tiefeng Liu; Yitian Fang; Yang Wang [Chinese Academy of Sciences, Taiyuan (China). Institute of Coal Chemistry

2008-05-15T23:59:59.000Z

142

Gasification and Chemical-Looping Combustion of a Lignite Char in a Fluidized Bed of Iron Oxide  

Science Journals Connector (OSTI)

Gasification and Chemical-Looping Combustion of a Lignite Char in a Fluidized Bed of Iron Oxide ... Taking reactions R1 and R2 together, the fuel has been combusted but resulting CO2 has been separated from N2 in the air, while the total heat evolved is the same as for the direct combustion of the fuel in air. ... The amount of carbon in the bed at the end of each feeding period could then be determined by combusting the char in air and measuring the total amount of CO2 and CO produced. ...

T. A. Brown; J. S. Dennis; S. A. Scott; J. F. Davidson; A. N. Hayhurst

2010-05-06T23:59:59.000Z

143

Reaction rate kinetics for the non-catalytic hydrogenation of Texas lignite with tetralin and hydrogen gas  

E-Print Network [OSTI]

recorder 2 ? i2 9 power supply 3 ? Air motor agitator ? Fluidized sand bath 5 ? TC-4B temp. controller 6 ? Quench tank 7 ? Thermometer S ? Pneumatic fail-safe 9 ? Air filter 10 ? Air flow regulator ll ? Condensate trap 12 ? T-reactor system 13... by: Chairman of Commi tee) (Member) (Member) (He d of Devartment) May 1980 ABSTRACT Reaction Rate Kinetics for the Non-Catalytic Hydrogenation of Texas Lignite with Tetralin and Hydrogen Gas. (May 1980) David Allen Shumbera, B. S. , Texas A...

Shumbera, David Allen

2012-06-07T23:59:59.000Z

144

The effect of CO? on the flammability limits of low-BTU gas of the type obtained from Texas lignite  

E-Print Network [OSTI]

Chairman of Advisory Committee: Dr. W. N. Heffington An experimental study was conducted to determine if relatively large amounts of CO in a low-BTU gas of the type 2 derived from underground gasification of Texas lignite would cause significant... ? Flammability limit data for three actual samples of low-BTU gas obtained from an in-situ coal gasification experiment (Heffington, 1981). The HHC are higher LIST OF TABLES (Cont'd) PAGE hydrocarbons orimarily C H and C H . ----- 34 I 2 6 3 8' TABLE 5...

Gaines, William Russell

2012-06-07T23:59:59.000Z

145

Correlation of Paleocene Harmon and Hansen lignite beds, Adams, Billings, Bowman, Golden Valley, Hettinger, and Slope Counties, Williston Basin, North Dakota  

SciTech Connect (OSTI)

In southwestern North Dakota, minable lignite beds in the Paleocene Fort Union Formation include the Harmon and Hansen beds in the Bowman-Gascoyne area. Data from more than 700 drill holes penetrating these beds was used to construct stratigraphic cross sections. The Harmon and Hansen beds are the thickest and most laterally persistent lignites found under < 150 ft of overburden. The Harmon coal bed is as much as 34 ft thick, and is often split by claystone interbeds of variable thickness. The Hansen coal bed typically occurs 10--100 ft below the Harmon coal bed; it rarely attains a thickness of 15 ft, and averages 4 ft in thickness.

Keighin, C.W.; Flores, R.M.; Ochs, A. [Geological Survey, Denver, CO (United States)

1998-12-31T23:59:59.000Z

146

POWDERED ACTIVATED CARBON FROM NORTH DAKOTA LIGNITE: AN OPTION FOR DISINFECTION BY-PRODUCT CONTROL IN WATER TREATMENT PLANTS  

SciTech Connect (OSTI)

New federal drinking water regulations have been promulgated to restrict the levels of disinfection by-products (DBPs) in finished public water supplies. DBPs are suspected carcinogens and are formed when organic material is partially oxidized by disinfectants commonly used in the water treatment industry. Additional federal mandates are expected in the near future that will further affect public water suppliers with respect to DBPs. Powdered activated carbon (PAC) has traditionally been used by the water treatment industry for the removal of compounds contributing to taste and odor problems. PAC also has the potential to remove naturally occurring organic matter (NOM) from raw waters prior to disinfection, thus controlling the formation of regulated DBPs. Many small water systems are currently using PAC for taste and odor control and have the potential to use PAC for controlling DBPs. This project, a cooperative effort between the Energy & Environmental Research Center (EERC), the Grand Forks Water Treatment Plant, and the University of North Dakota Department of Civil Engineering, consists of several interrelated tasks. The objective of the research was to evaluate a cost-effective PAC produced from North Dakota lignite for removing NOM from water and reducing trihalomethane formation potential. The research approach was to develop a statistically valid testing protocol that can be used to compare dose-response relationships between North Dakota lignite-derived PAC and commercially available PAC products. A statistical analysis was performed to determine whether significant correlations exist between operating conditions, water properties, PAC properties, and dose-response behavior. Pertinent physical and chemical properties were also measured for each of the waters and each of the PACs.

Daniel J. Stepan; Thomas A. Moe; Melanie D. Hetland; Margaret L. Laumb

2001-06-01T23:59:59.000Z

147

Task 50 - deposition of lignites in the Fort Union Group and related strata of the northern Great Plains  

SciTech Connect (OSTI)

Late Cretaceous, Paleocene, and early Eocene geologic and paleontologic studies were undertaken in western North Dakota, eastern and south-central Montana, and northwestern and northeastern Wyoming. These study areas comprise the Williston, Bighorn, and Powder River Basins, all of which contain significant lignite resources. Research was undertaken in these basins because they have the best geologic sections and fossil record for the development of a chronostratigraphic (time-rock) framework for the correlation of lignite beds and other economic resources. A thorough understanding of the precise geologic age of the deposition of sediments permits a powerful means of interpreting the record of geologic events across the northern Great Plains. Such an understanding allows for rigorous interpretation of paleoenviromnents and estimates of resource potential and quality in this area of economically significant deposits. This work is part of ongoing research to document change in the composition of molluscan fossil faunas to provide a paleoenvironmentally sensitive independent means of interpreting time intervals of brief duration during the Late Cretaceous, Paleocene, and Eocene. This study focuses on the record of mollusks and, to a lesser extent, mammals in the (1) Hell Creek-Tullock Formations, which include the Cretaceous-Paleocene boundary, in the western portion of the Williston Basin, Montana; (2) uppermost Cretaceous, Paleocene, and lowermost Eocene strata in western North Dakota, which -includes the last interior seaway in North Dakota; (3) upper Paleocene and lowermost Eocene of the northern portion of the Bighorn Basin of south-central Montana and northwestern Wyoming; and (4) Powder River Basin of northeastern Wyoming and southeastern Montana. The geologic record provides different physical and paleontological information to aid in interpreting the geologic record through the study interval.

Hartman, J.H.; Roth, B.; Kihm, A.J.

1997-08-11T23:59:59.000Z

148

Characterization of the mineralogy of the oxidized portion of the overburden and relation of pre-mine mineralogy to success of post-mine reclamation at a lignite mine near Jewett, Texas  

E-Print Network [OSTI]

production prices made the lignite mines economically unfeasible. The land, which was undeveloped rangeland, cropland and pasture prior to mining, was returned to the same uses, By the 1970s, depletion of native oil and gas reserves, rise in prices forced... production prices made the lignite mines economically unfeasible. The land, which was undeveloped rangeland, cropland and pasture prior to mining, was returned to the same uses, By the 1970s, depletion of native oil and gas reserves, rise in prices forced...

Oliver, Julie

2012-06-07T23:59:59.000Z

149

Characterization of the liquid phase obtained by copyrolysis of Mustafa Kemal Pasa (M.K.P.) Lignite (Turkey) with low density polyethylene  

SciTech Connect (OSTI)

This study describes the detailed hydrocarbon type characterization of the tar (liquid phase) obtained by copyrolysis of Mustafa Kemal Paa (M.K.P.) lignite (Turkey) and low density polyethylene (LDPE) and by pyrolysis of coal and LDPE individually. Various spectroscopic techniques (gas chromatography-mass spectroscopy (GC-MS), nuclear magnetic resonance spectroscopy ({sup 1}H NMR), Fourier transform infrared spectroscopy (FTIR), and gel permeation chromatography (GPC)) are used for characterization, and the effect of the experimental conditions (temperature, lignite:low density polyethylene (LDPE) ratio, and catalyst) on the hydrocarbon distributions is discussed. The results show that the tars obtained by copyrolysis have similar properties with commercial gasoline (especially in the presence of Red mud). Red mud and bentonite used as catalysts make a positive effect on the production of olefins instead aromatics. Polyethylene acts as a hydrogenation medium for the coal product as revealed by FTIR results. 18 refs., 9 figs., 5 tabs.

Ali Sinag; Melike Sungur; Mustafa Gullu; Muammer Canel [Ankara University, Beevler-Ankara (Turkey). Department of Chemistry, Science Faculty

2006-10-15T23:59:59.000Z

150

Effect of experimental conditions on the yields during the copyrolysis of Mustafa Kemal Paa (MKP) Lignite (Turkey) with low-density polyethylene  

SciTech Connect (OSTI)

Copyrolysis of a Turkish lignite with low-density polyethylene (LDPE) is conducted in a tubular reactor. The effect of experimental conditions (temperature of 400-700{sup o}C, catalyst, LDPE contents of the mixture are 33, 50, and 67 wt %) on the formation of tar, gas, and char and their effects on the formation of phenol are investigated. The catalysts used are red mud (which is a waste product of an aluminum factory in Turkey), zeolite (Linde type A (LTA)), and K{sub 2}CO{sub 3}. Tar evolution is determined to be increased significantly by increasing the LDPE content of the coal-LDPE mixture during the pyrolysis. The effect of adding LDPE to the coal on the gas generation is not remarkable. An increase in temperature leads to increased gas yields. Phenol and phenol derivatives are the obstacles for the complete conversion of lignite to tar and gas. To investigate this negative effect of phenols on the yields, the phenols found in tar from coal pyrolysis are detected by gas chromatography-mass spectroscopy (GC-MS), and it is observed that phenolic structures detected in the tar obtained by individual pyrolysis of coal are dramatically decreased by adding polymer to the coal. The use of catalysts during the copyrolysis procedure leads to improved gas generation. The possible reasons of these variations are discussed. A remarkable synergetic effect between lignite and LDPE on the tar yields is also observed. 21 refs., 8 figs., 4 tabs.

Ali Sinag; Melike Sungur; Muammer Canel [Ankara University, Beevler-Ankara (Turkey). Department of Chemistry, Science Faculty

2006-08-15T23:59:59.000Z

151

Kinetic study of steam gasification of two mineralogically different lignite chars: An active site/intermediate model  

Science Journals Connector (OSTI)

Abstract A new active site/intermediate model (ASIM) is formulated in terms of a simplified calcium-catalyzed mechanism of char gasification to characterize a conversion-dependent maximum in reaction rate. In a limited case, the model is retrogressed to a common volumetric model (VM). Two sets of kinetic data were experimentally gathered by steam gasification of two lignite chars in a fixed bed reactor with negligible mass diffusion limitation. The gasification behaviors of two chars were, respectively, representative of catalyzed and uncatalyzed gasification as a result of the influences of different mineral components in them. It was found that ASIM intimately fit the kinetic profiles over the entire range of conversion for both catalyzed and uncatalyzed char gasification, demonstrating the good adaptability to varying chars. The model could determine the activation energies for the formation of the total carbon-containing gases and of two individual gases (CO and CO2) from the oxygenated intermediate. Moreover, for the case of catalyzed gasification, ASIM reasonably predicted the formation, growth and decline of the intermediate with carbon conversion as well as the change in the intermediate concentration with gasification temperature. For the case of uncatalyzed gasification, the model portrayed essentially a linear decline in the intermediate concentration with increasing carbon conversion, similar to VM.

Jia Tang; Xuantao Wu; Jie Wang

2015-01-01T23:59:59.000Z

152

An initial study on feasible treatment of Serbian lignite through utilization of low-rank coal upgrading technologies  

Science Journals Connector (OSTI)

Abstract Despite benefiting from vast fuel reserves, combustion of low-rank coals is commonly characterized by low thermal efficiency and high pollutant emissions, partly due to high moisture content of the coals in question. Thus, removal of moisture from low-rank coals is deemed an important quality upgrading method. The paper provides an overview of the current status of low-rank coal upgrading technologies, particularly with respect to utilization of drying and dewatering procedures. In order to examine the influence of relevant parameters on the moisture removal process, a model of convective coal drying in a packed, as well as in a fluid bed combustion arrangement, is developed and presented. Product-specific data (intraparticle mass transfer, gas–solid moisture equilibrium) related to the coal variety addressed herein (lignite) are obtained through preliminary investigations. Effective thermal conductivity of the packed bed as defined by Zehner/Bauer/Schlünder is used to define heat transfer mechanisms occurring in the packed bed. Similar two-phase fluidization model has been validated for different types of biomaterials.

Milan Staki?; Dejan Cvetinovi?; Predrag Škobalj; Vuk Spasojevi?

2014-01-01T23:59:59.000Z

153

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

SciTech Connect (OSTI)

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

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

2008-07-01T23:59:59.000Z

154

LIGNITE FUEL ENHANCEMENT  

SciTech Connect (OSTI)

The Design Team continued to conference this quarter. Their primary task during this timeframe was to finalize the dryer design based on information learned from the NDIC Pilot work and detailed design discussions at Barr offices in August. Heyl-Patterson was tasked with incorporating all comments and drafting drawings. They submitted a preliminary proposal which spawned detailed discussions about tube bundle, air locks, and fire suppression systems. The type of fire protection specified dictated the final structural arrangement. Three meetings were spent discussing the pro's and con's of suppression vs. ventilation systems. In the end, the dryer and bucket elevator will have suppression systems and the remaining equipment will be explosion vented. This is in agreement with GRE's current insurer, FM Global. Three inlet airlocks were reduced to two and four outlets were reduced to three. The inlet plenum was subdivided for greater flexibility and sparging air added in the outlet plenum. It was also decided to use bundles with varied material, diameter, and tube & fin spacing. This will be completed in an effort to identify for us which configuration has the best heat transfer characteristics using coal as the fluidizing medium. The dryer will also be delivered in four pieces. This will allow for installation through the current access door on the Air Heater deck. The Input/Output list and functional description was completed and forwarded to Honeywell to finalize controls. Major pieces of equipment received this quarter were the Bucket Elevator, Liewell Screen, conveyors, and Motor Control Center. ICI completed removal of the wall separating Silo 28 from the dryer area; handrail and grating between the two areas has also been removed. They relocated a blowdown line. They moved an Air Heater basket access hatch.

Charles Bullinger

2005-02-07T23:59:59.000Z

155

Solar aided power generation of a 300 MW lignite fired power plant combined with line-focus parabolic trough collectors field  

Science Journals Connector (OSTI)

Abstract Nowadays, conventional coal or gas fired power plants are the dominant way to generate electricity in the world. In recent years there is a growth in the field of renewable energy sources in order to avoid the threat of climate change from fossil fuel combustion. Solar energy, as an environmental friendly energy source, may be the answer to the reduction of global CO2 emissions. This paper presents the concept of Solar Aided Power Generation (SAPG), a combination of renewable and conventional energy sources technologies. The operation of the 300 MW lignite fired power plant of Ptolemais integrated with a solar field of parabolic trough collectors was simulated using TRNSYS software in both power boosting and fuel saving modes. The power plant performance, power output variation, fuel consumption and CO2 emissions were calculated. Furthermore, an economic analysis was carried out for both power boosting and fuel saving modes of operation and optimum solar contribution was estimated.

G.C. Bakos; Ch. Tsechelidou

2013-01-01T23:59:59.000Z

156

An environment friendly and efficient lignite-fired power generation process based on a boiler with an open pulverizing system and the recovery of water from mill-exhaust  

Science Journals Connector (OSTI)

Abstract This paper advances a novel lignite-fired power generation process based on a OPSB (boiler with an open pulverizing system) and the recovery of water from mill-exhaust after the comprehensive analysis of the open pulverizing system used for high-moisture coals and heat/water recovery from boiler exhaust. Then, the thermal calculation method that applies to OPSB is presented based on heat and mass balance analyses of the boiler. Finally, an efficient unit applying the OPSB process is compared with a conventional 600 MW lignite-fired power unit, and the performance of the efficient unit is calculated and discussed in detail. The results show that the efficient unit not only yields a notable increase in the boiler's (2.6%) and the power plant's (1.3%) thermal efficiency but also provides a remarkable advantage in water recovery due to the mass of water vapor concentrated in mill-exhaust. In the efficient unit, the volume fraction of water vapor in mill-exhaust reaches 34%, the water reclaimed from mill-exhaust is so much that a lignite-fired power plant with zero water consumption can be expected, while the pollutant emissions can be reduced in proportion to the increase in boiler thermal efficiency.

Youfu Ma; Yichao Yuan; Jing Jin; Hua Zhang; Xiaohong Hu; Dengyu Shi

2013-01-01T23:59:59.000Z

157

Efficiency and power upgrade by an additional high pressure economizer installation at an aged 620 MWe lignite-fired power plant  

Science Journals Connector (OSTI)

Abstract An additional high pressure economizer was installed at Unit B1 of the 620 MWe lignite-fired Power Plant “Nikola Tesla B” after 30 years of its operation. An innovative connection of the new additional economizer was applied. It is in parallel connection to the first section of the originally built economizer and it is directly fed with the feedwater from the outlet of the feedwater pump. The analysis of Unit B1 operation with such an economizer arrangement is performed and it is supported by measured data. It is shown that more than 30 MWth of the flue gas waste heat is recovered. The Unit gross efficiency is increased by 0.53 percentage points, which leads to 9.4 MWe of the electric power production. The parallel connection of the additional economizer also leads to the partial feedwater bypass of the high pressure heaters, which enables an increase of the plant electric power by up to 24.5 MWe. The accompanying effects are the reduction of the pressure drop in the feedwater line and the economizers, which leads to the decrease of the energy consumption for the main feedwater pump operation. The applied solution is presented together with measured and calculated energy and economic benefits.

Vladimir D. Stevanovic; Tadeusz Wala; Slawomir Muszynski; Milos Milic; Milorad Jovanovic

2014-01-01T23:59:59.000Z

158

Measurement of gas species, temperatures, coal burnout, and wall heat fluxes in a 200 MWe lignite-fired boiler with different overfire air damper openings  

SciTech Connect (OSTI)

Measurements were performed on a 200 MWe, wall-fired, lignite utility boiler. For different overfire air (OFA) damper openings, the gas temperature, gas species concentration, coal burnout, release rates of components (C, H, and N), furnace temperature, and heat flux and boiler efficiency were measured. Cold air experiments for a single burner were conducted in the laboratory. The double-swirl flow pulverized-coal burner has two ring recirculation zones starting in the secondary air region in the burner. As the secondary air flow increases, the axial velocity of air flow increases, the maxima of radial velocity, tangential velocity and turbulence intensity all increase, and the swirl intensity of air flow and the size of recirculation zones increase slightly. In the central region of the burner, as the OFA damper opening widens, the gas temperature and CO concentration increase, while the O{sub 2} concentration, NOx concentration, coal burnout, and release rates of components (C, H, and N) decrease, and coal particles ignite earlier. In the secondary air region of the burner, the O{sub 2} concentration, NOx concentration, coal burnout, and release rates of components (C, H, and N) decrease, and the gas temperature and CO concentration vary slightly. In the sidewall region, the gas temperature, O{sub 2} concentration, and NOx concentration decrease, while the CO concentration increases and the gas temperature varies slightly. The furnace temperature and heat flux in the main burning region decrease appreciably, but increase slightly in the burnout region. The NOx emission decreases from 1203.6 mg/m{sup 3} (6% O{sub 2}) for a damper opening of 0% to 511.7 mg/m{sup 3} (6% O{sub 2}) for a damper opening of 80% and the boiler efficiency decreases from 92.59 to 91.9%. 15 refs., 17 figs., 3 tabs.

Jianping Jing; Zhengqi Li; Guangkui Liu; Zhichao Chen; Chunlong Liu [Harbin Institute of Technology, Harbin (China). School of Energy Science and Engineering

2009-07-15T23:59:59.000Z

159

CO2-gasification of a lignite coal in the presence of an iron-based oxygen carrier for chemical-looping combustion  

Science Journals Connector (OSTI)

Abstract Chemical-looping combustion (CLC) has the inherent property of separating the product CO2 from flue gases. Instead of air, it uses an oxygen carrier, usually in the form of a metal oxide, to provide oxygen for combustion. All techniques so far proposed for chemical looping with solid fuels involve initially the gasification of the solid fuel in order for the gaseous products to react with the oxygen carrier. Here, the rates of gasification of coal were compared when gasification was undertaken in a fluidised bed of either (i) an active Fe-based oxygen carrier used for chemical looping or (ii) inert sand. This enabled an examination of the ability of chemical looping materials to enhance the rate of gasification of solid fuels. Batch gasification and chemical-looping combustion experiments with a German lignite and its char are reported, using an electrically-heated fluidised bed reactor at temperatures from 1073 to 1223 K. The fluidising gas was CO2 in nitrogen. The kinetics of the gasification were found to be significantly faster in the presence of the oxygen carrier, especially at temperatures above 1123 K. A numerical model was developed to account for external and internal mass transfer and for the effect of the looping agent. The model also included the effects of the evolution of the pore structure at different conversions. The presence of Fe2O3 led to an increase in the rate of gasification because of the rapid oxidation of CO by the oxygen carrier to CO2. This resulted in the removal of CO and maintained a higher mole fraction of CO2 in the mixture of gas around the particle of char, i.e. within the mass transfer boundary layer surrounding the particle. This effect was most prominent at about 20% conversion when (i) the surface area for reaction was at its maximum and (ii) because of the accompanying increase in porosity and pore size, intraparticle resistance to gas mass transfer within the particle of char had fallen, compared with that in the initial particle. Excellent agreement was observed between the rates predicted by the numerical model and those observed experimentally.

Marco A. Saucedo; Jin Yang. Lim; John S. Dennis; Stuart A. Scott

2014-01-01T23:59:59.000Z

160

Trace element partitioning in Texas lignite  

E-Print Network [OSTI]

), but collected from the one of the secondary tanks which contains the slurry that exits the scrubber tower and is either recycled or sent to the thickener tank. 10. Bag house FGD (flue gas desulfurization system) fly ash fines (BHA): white-gray, dry, fine... Station. Concentrations of 41 elements were determined by neutron activation analysis. The particle size distribution was determined by Coulter counter analysis for the fly ash collected from the electrostatic precipitator outlets and from the flue...

Acevedo, Lillian Esther

1989-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "bitu subbitu lignite" 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

Desulfurization of lignite using steam and air  

E-Print Network [OSTI]

OF CONTENTS PAGE INTRODUCTION LITERATURE REVIEW Sulfur Removal Using a Fixed Bed Reactor Sulfur Removal Using a Batch Fluidized Bed Reactor . . 9 Continuous Fluidized Bed Reactor Systems for Desulfurization of Coal Clean Coke Process IGT Process... . This study was aimed primarily at producing better metallurgical coke. The ef+ects of various gases on +he sulfur remova1 wo re measured 0 for coal samples at varying t mperatures up to 1273 K The sample was h ated. at a constant ra+ e until the t. st...

Carter, Glenn Allen

2012-06-07T23:59:59.000Z

162

Evaluation of ground-water quality impacts of lignite waste disposal at a Texas lignite mine  

E-Print Network [OSTI]

to be responsible for the high degree of selen1um attenuation 1s adsorption of the element by amorphous iron and alum1num ox1des and organic matter abundant in the clay soils of the study area. ACKNOWLEDGEMENTS I would like to thank the members of my thes1s.... LABORATORY DISTRIBUTION COEFFICIENT INVESTIGATION . . Methods. Preliminary Evaluation Mechanism of Selenium Attenuation. Freundlich Isotherm. . Control Batch Tests Distribution Coefficient Dependence on Soil Type. . . . . Distribution Coefficient...

Green, Deborah Joan

1984-01-01T23:59:59.000Z

163

Desulfurization of Texas lignite using steam and air  

E-Print Network [OSTI]

in Coal Sulfur Removal From Coal By Pyrolysis EXPERIMENTAL METHOD Experimental Apparatus Experimental Procedure Analyses of the Products RESULTS AND DISCUSSION Temperature Effect Upon Desulfurization Pressure Effect Upon Desulfurization... . Treatment Composition Effect Pyrolysis Conditions vs. Addition of' Air V1 V111 ix 10 15 20 24 31 31 35 39 43 45 49 52 53 V11 TABLE OF CONTENTS (Continued) PAGE Pyrolysis Conditions vs. Addition of Steam and Air . . 53 Sulfur Removal...

Stone, Robert Reginald

1981-01-01T23:59:59.000Z

164

Biological Diversity, Soils, and Economics  

Science Journals Connector (OSTI)

...U.S. AA-ADelA 0Ausraia * X 0 0 0 Egypt JC~sep. Koresn Xg KuwM *-A0A ~El...sector. (C) Global pattern of mineral energy resources. Closed circles indicate bitu-minous...the sustainable production of food and energy provided by plants, cannot be achieved...

Michael Huston

1993-12-10T23:59:59.000Z

165

China Energy Databook -- User Guide and Documentation, Version 7.0  

E-Print Network [OSTI]

coal, lignite, peat, and oil shale. [2] Crude oil, naturalcoal, lignite, peat, and oil shale. [2] Crude oil, naturalcoal, lignite, peat, and oil shale. [2] Crude oil, natural

Fridley, Ed., David

2008-01-01T23:59:59.000Z

166

China Energy Databook - Rev. 4  

E-Print Network [OSTI]

coal, lignite, peat, and oil shale, Crude oil and naturalcoal, lignite, peat, and oil shale, Crude oil and naturalcoal, lignite, peat, and oil shale. Crude oil and natural

Sinton Editor, J.E.

2010-01-01T23:59:59.000Z

167

Variation in physical rock properties determined from sonic logs at a South Texas lignite mine  

E-Print Network [OSTI]

graph1c units and their sonic properties; 6. comparing the sonic logg1ng data with geotechnical test results; 7. applying the tool through the production of physical rock character1zati on maps using the sonic and strat1graphic logs of overburden...graph1c units and their sonic properties; 6. comparing the sonic logg1ng data with geotechnical test results; 7. applying the tool through the production of physical rock character1zati on maps using the sonic and strat1graphic logs of overburden...

Cato, Kerry Don

2012-06-07T23:59:59.000Z

168

Engineering geologic analysis of reclaimed spoil at a southeast Texas Gulf Coast surface lignite mine  

E-Print Network [OSTI]

, equipment, and exposure of our work at meetings and symposia. I wish to thank Dr. Jean-Louis Briaud, for his aid tn interpreting the cone penetration data, and Dr. Wayne A. Dunlap, for his assistance on geotechnical problems and for access to facilities... 12 6 Stratigraphic (dip) section, ?D1A, A-pit 7 Stratigraphic (dip) section, ?D2A, A-pit 8 Stratigraphic (dip) section, ?D1B, 8-pit 13 14 15 9 Study site map showing locations of stratigraphic profile lines 16 10 Nine pit advance map...

Armstrong, Scott Charles

2012-06-07T23:59:59.000Z

169

Effects of hydrogeology on lignite recovery in the Manning Formation, Grimes County, Texas  

E-Print Network [OSTI]

OF CONT%'TS Page ABSTRACT A i", KN OWLEDGEI'IEIVTS LIST OF TABLES LIST OF FIGUIKS LIST OF MAPS INTRODUCTION 1V V111 REASON 1"OR STUDY LOCATION O'F THE STiJDY AREA PRLUIOUS WOE GEOLOGY I?YDROGEO~VY THEORY OF GROiTK-WATER FLOW 14 RESEARCH... Renick (1o/$6). 7 Composite geologic section of the Jackson Group, Grimes County, Text, from Walton (1959) 12 Schematic di-gram showing irtroduction of ground. water pumping and increased hydraulic gradient to compensate for increased rate of flow...

Levitan, Leslie Mark

2012-06-07T23:59:59.000Z

170

Detailed mining study phase 3: Saba Yoi lignite deposit. Export trade information  

SciTech Connect (OSTI)

The study, conducted by John T. Boyd Company, was funded by the U.S. Trade and Development Agency on behalf of the Electricity Generating Authority of Thailand. The report presents Phase 3 of the feasibility study conducted for the development of the Saba Yoi Coal Mine. The study focuses on technical issues related to the development of the project including geological data and detailed mine development and scheduling. The report is divided into the following sections: (1) General Statement; (2) Summarized Findings; (3) Background; (4) Geology and Resources; (5) Geotechnical/Hydrogeological; (6) Detailed Mine Development; (7) Detailed Mine Production Scheduling; (8) Detailed Mine Analysis; (9) Mine Development and Facilities; (10) Mine Labor and Wages; and (11) Project Economics.

NONE

1994-07-01T23:59:59.000Z

171

Geochemistry and mineralogy of fly-ash from the Mae Moh lignite deposit, Thailand  

SciTech Connect (OSTI)

The concentration of 21 elements in fly ash from three boilers (75 MW, 150 MW, and 300 MW) at the EGAT power plant, Mae Moh, Thailand, were determined by INAA. The concentration of 10 major elements was determined by XRF. As, Co, Cr, Ni, Mo, and Sb generally increase in concentration going from bottom ash (BA) through the sequence of electrostatic precipitator ashes (ESPA) and reach maxima of As (352 ppm), Co (45 ppm), Cr (105 ppm), Mo (32 ppm), Ni (106 ppm), and Sb (15 ppm) in the ESPA. Ce, Cs, Fe, Hf, La, Sc, Ta, Tb, and Yb did not exhibit concentration trends or are variable except in the case of one boiler, which showed an increase going from BA to ESPA. Only Br decreased in composition going from BA to ESPA. Rb, Sm, U, and Th showed marked variation in trends. The major elements identified by EDS were Al, Si, S, K, Ca, Fe, and Ba, with minor amounts of Mg, Na, Ti, Mn, and Sr. Al, Si, K, and Ca occur together and are present in most of the fly-ash particles. Ba was found as a major component with Ca, Al, and Si. Fe and Ca are usually associated with sulfur. Some small spheres (< 5 {mu}m) are comprised almost entirely of Fe (probably as oxide). Symplectite textures are noted in high-Fe phases. All elements except Br are significantly enriched in the fly ash relative to the coal, which contains 35% ash. Particle chemistry is consistent with the major mineral phases identified by XRD, which include: quartz, magnetite, mullite, gehlenite, anorthite, hematite, anhydrite, and clinopyroxene.

Hart, B.R.; Powell, M.A.; Fyfe, W.S. [Univ. of Western Ontario, London, Ontario (Canada). Dept. of Geology; Ratanasthien, B. [Univ. of Chaing Mai (Thailand). Dept. of Geology

1995-01-01T23:59:59.000Z

172

Cogasification of Polyethylene and Lignite in a Dual Fluidized Bed Gasifier  

Science Journals Connector (OSTI)

(20) There were two types of plastics used, a shredder light fraction (SLF) from end-of-life vehicles and pellets made of selected plastics from municipal solid waste. ... Shredder-light fraction ...

Stefan J. Kern; Christoph Pfeifer; Hermann Hofbauer

2013-02-22T23:59:59.000Z

173

A kinetic model for the liquefaction of lignite in a continuous stirred tank reactor  

E-Print Network [OSTI]

and catalytic cracking of paraffins and other constituents to compounds in the methane to butane (Cl ? C4) range. To account for the loss of oils by cracking an oils ~ C ? C step with 1 4 rate constant kOG was added. Philip and Anthony (1978) reported...

Culpon, Douglas Holmes

1982-01-01T23:59:59.000Z

174

Western fuels symposium. 19th international conference on lignite, brown, and subbituminous coals. Proceedings  

SciTech Connect (OSTI)

Topics covered at the conference include: advanced power systems; environmental issues and control technologies - multipollutants and mercury; power plant systems performance; fuel by-products utilization; fuel properties and upgrading; coalbed methane and water minimization; and carbon sequestration. A few of the papars only consist of a printout of the overheads/viewgraphs. The proceedings are also available on CD-ROM.

NONE

2004-07-01T23:59:59.000Z

175

Development and evaluation of two reactor designs for desulfurization of Texas lignites  

E-Print Network [OSTI]

Studies One of the earliest extensive studies of sulfur removal from coal was performed by R. D. Snow in 1932. The primary goal of this study was to produce a better metallurgical coke. The effects of various gases on sulfur removal were measured... of coke, most of the hydrogen rich parts of the coal are devolatilized. It is the hydrogen, however, that provides a large part of the energy when the product is used as a fuel. Clearly, any desulfurization technique for fuel should take place under...

Merritt, Stanley Duane

2012-06-07T23:59:59.000Z

176

Development of a thermobalance and analysis of lignites by thermogravimetric and statistical methods  

E-Print Network [OSTI]

. It is used to heat homes, to produce steam to drive turbines which run our industries and pro- duce our electricity, to form coke which is then used in the production of iron and steel, and to produce coal gas which is then burned or turned into some new... deal of time. Now that TA allows for a rapid determination of the proximate analysis of a coal or coke, a quick method for predicting Q is possible. The method used in this research for relating Q to prox- imate analysis data is presented here...

Ferguson, James Allen

2012-06-07T23:59:59.000Z

177

Investigation of bonding mechanism of coking on semi-coke from lignite with pitch and tar  

SciTech Connect (OSTI)

In coking, the bonding ability of inert macerals by reactive macerals is dependent on various parameters and also is related to the wettability of the inert macerals. In this study, the effect of carbonization temperature on the wettability of semi-cokes produced at various temperatures has been investigated. Soma and Yatagan semicokes represent inert macerals, and pitch was used as a reactive structure in the experiments. The briquetted pitch blocks were located on the semi-cokes and heated from the softening temperature of pitch (60{sup o}C) to 140{sup o}C to observe the wettability. In addition, liquid tar was also used to determine the wettability of semi-cokes. From the standpoint of wettability, the temperature of 900{sup o}C was determined to be the critical point for coke produced from sub-bituminous coals. 15 refs., 6 figs., 2 tabs.

Vedat Arslan [Dokuz Eylul University, Izmir (Turkey). Engineering Faculty

2006-10-15T23:59:59.000Z

178

Material balance in atmospheric fluidized-bed combustion of North Dakota lignite  

SciTech Connect (OSTI)

The cyclone/fabric filter system limited particulate emissions to extremely low levels of only 0.00026 lb/10/sup 6/ Btu to 0.00040 lb/10/sup 6/ Btu. Emissions, in the flue gas, of trace and minor elements were very low when compared to a well controlled conventional boiler and to environmental goals. The majority of the trace and minor elements left the FBC system in the primary cyclone catch and the bed drain. Emissions in the flue gas of many trace and minor elements were less than 0.1 percent of the total input to the FBC system. Trace and minor element material balance in FBC systems can be difficult to close unless problems with changes in bed inventory are minimized by long periods of steady state operation.

Hall, R.R.; McCabe, M.M.; McGrath, D.; Sears, D.R.

1982-01-01T23:59:59.000Z

179

A study of uranium distribution in an upper Jackson lignite-sandstone ore body, South Texas  

E-Print Network [OSTI]

in the caprock of the Palangana salt dome (Weeks and Eargl e, 1960) . Many of the deposits are located at depths too great for open- pi t mining, and ' n situ leaching is being attempted . As this method advances the Duval district will undoubtably gain... in the caprock of the Palangana salt dome (Weeks and Eargl e, 1960) . Many of the deposits are located at depths too great for open- pi t mining, and ' n situ leaching is being attempted . As this method advances the Duval district will undoubtably gain...

Chatham, James Randall

2012-06-07T23:59:59.000Z

180

Prediction of postmine ground-water quality at a Texas surface lignite mine  

E-Print Network [OSTI]

The prediction Of postmine ground-water quality is encumbered with many complications resulting from the complex hydrologic system found in mine spoils. Current analytical methods such as acid/base accounting have only had limited success...

Wise, Clifton Farrell

1995-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "bitu subbitu lignite" 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

Drying Kinetics Characteristic of Indonesia Lignite Coal (IBC) Using Lab Scale Fixed Bed Reactor  

Science Journals Connector (OSTI)

Recent instability of energy market arouse a lot of interest about coal which has a tremendous amount of proven coal reserves worldwide. South Korea hold the second rank by importing 80 million tons of coal in...

TaeJin Kang; DoMan Jeon; Hueon Namkung…

2013-01-01T23:59:59.000Z

182

LGOM region as a perspective power energy basin and implementation of innovative lignite development methods  

Science Journals Connector (OSTI)

Total reserves resources of the Legnica deposit complex are...1; Tables 1 and 2), with those in the Scinawa–Glogow region reaching almost 10.0 billion tonnes. Fig. 1 ...

Janusz Nowak; Jan Kudelko

2013-03-01T23:59:59.000Z

183

Functional and taxonomic diversity of microbial communities in reclaimed East Texas lignite mine soils  

E-Print Network [OSTI]

collected along a chronosequence including sites of 0, 1, 4, 12, and 28 years following mining and reclamation. In addition to these sites, an unmined reference site, and a tree mott (reclamation age of 20 years) were included in the study. The functional...

Peach, Allen Edward

2012-06-07T23:59:59.000Z

184

The effect of sewage sludge on the physical properties of lignite overburden  

E-Print Network [OSTI]

. 47:770-775. 24. Ryan, J. A. , 0. E. Keeney, and L. M. Walsh. 1973. Nitrogen transformation and availability of an anaerobically digested sewage sludge in soil. J. Environ. Qual. 2:489-492. 32 25. Soppec, W. E. , and S. Kerr. 1981. Revegetation... if water is to penetrate downward. A study using raw and digested sewage sludge added to a Beltsville silt loam soil at 5% by weight resulted in an increase in percent water stable aggregates with the addition of sludge (Epstein, 1975). After 175 days...

Cocke, Catherine Lynn

1985-01-01T23:59:59.000Z

185

The natural radioactivity contents in feed coals from the lignite-fired power plants in Western Anatolia, Turkey  

Science Journals Connector (OSTI)

......consumption of electric energy. In the last 30 y, energy consumption per person, which...of the electric energy production is provided...their products. The average activity concentrations...consumed domestically for home use, but, today......

N. Füsun Çam; Günseli Yaprak; Elif Eren

2010-12-01T23:59:59.000Z

186

Catalytic Effect of BL and BL+Ca Mixed Catalyst on Sulfur-Containing Gasses of Pakistani Lignite Chars  

Science Journals Connector (OSTI)

Pakistan is abundant in natural coal reserves, has vast resources in all four provinces...1...], and has emerged as one of the leading country – seventh in the list of top 20 countries of the world, after the dis...

G. R. Jaffri; J.-Y. Zhang

2012-01-01T23:59:59.000Z

187

Resource Limits and Conversion Efficiency with Implications for Climate Change  

E-Print Network [OSTI]

largest demonstrated reserve base of lignite is Montana, yetdemon- strated reserve base of lignite in the entire U.S. isplants. The reserves of Poland’s four major lignite mines

Croft, Gregory Donald

2009-01-01T23:59:59.000Z

188

China's Coal: Demand, Constraints, and Externalities  

E-Print Network [OSTI]

Although lignite composes 16% of China’s coal reserves bys coal reserves are estimated to be 16% lignite by volume.reserves are classified as bituminous coal by volume, versus 29% sub-bituminous and 16% lignite.

Aden, Nathaniel

2010-01-01T23:59:59.000Z

189

China Energy Databook - Rev. 4  

E-Print Network [OSTI]

Lignite Hydropower f Uranium U Unless otherwise noted, "reserves"Reserves * for Selected Countries Coal (Mt) Bituminous & Subbituminous Crude Oil Natural Gas Hydropower f Uranium H & Lignite (

Sinton Editor, J.E.

2010-01-01T23:59:59.000Z

190

Microsoft Word - Subject Categories Booklet  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Descriptions 01 COAL, LIGNITE, AND PEAT Information on coal and coal products, including lignite and peat, as energy sources. Reserves, geology and exploration; surface and...

191

ORGANIC GEOCHEMICAL CHARACTERIZATION AND MINERALOGIC PROPERTIES OF MENGEN OIL SHALE (LUTETIAN  

E-Print Network [OSTI]

, lignite, and oil shale sequences. Oil shale deposit has been accumulated in shallow restricted back

unknown authors

192

E-Print Network 3.0 - american foreign exchange Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

--- --- --- --- 1000 Coal, Lignite, ... Source: US Army Corps of Engineers - Coastal and Hydraulics Laboratory (CERC)...

193

RMZ-M&G, Vol. 57, No. 2 pp. 159294 (2010) Ljubljana, June 2010  

E-Print Network [OSTI]

Reserves and Placement of Exploitation Fields in Exploitation of the Lignite Deposit in Premogovnik Velenje

Fernandez, Thomas

194

Slide 1  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

in Lignite Coal in Lignite Coal Plains CO 2 Reduction (PCOR) Partnership RCSP Annual Meeting Pittsburgh, Pennsylvania November 17, 2009 Darren Schmidt, P.E. Energy & Environmental Research Center Lignite Field Validation Test Burke County, North Dakota Goal and Objectives Goal * Determine the feasibility of simultaneous carbon dioxide (CO 2 ) sequestration and natural gas production from a lignite coal seam. Objectives * Inject CO 2 into lignite coal seam and monitor CO

195

226Ra, 232Th and 40K radionuclides enhancement rate and dose assessment for residues of lignite-fired thermal power plants in Turkey  

Science Journals Connector (OSTI)

......found in residues resulting from coal combustion in thermal power plants can widely depend on mineral ingredients of coal. Coal and ash activity concentrations...Radium 7440-29-1 Thorium | Coal Ash chemistry Environmental Exposure analysis......

A. Parmaksiz; P. Arikan; M. Vural; E. Yeltepe; I. Tükenmez

2011-11-01T23:59:59.000Z

196

Spatial and vertical distribution and risk assessment of natural radionuclides in soils surrounding the lignite-fired power plants in Megalopolis basin, Greece  

Science Journals Connector (OSTI)

......author: epap@chemistry.upatras.gr 1 Department of Chemistry, University of...mSv. INTRODUCTION Coal-fired plants are...1-3). During combustion for electrical energy...Elements-Emissions from Coal Combustion and Gasification......

H. V. Papaefthymiou; M. Manousakas; A. Fouskas; G. Siavalas

2013-08-01T23:59:59.000Z

197

Extraction of Lignite Coal Fly Ash for Polynuclear Aromatic Hydrocarbons: Modified and Unmodified Supercritical Fluid Extraction, Enhanced-Fluidity Solvents, and Accelerated Solvent Extraction  

Science Journals Connector (OSTI)

......7440-44-0 Carbon | Carbon analysis chemistry Coal analysis Coal Ash Gas Chromatography-Mass...Hydrocarbons, Aromatic analysis chemistry Industrial Waste analysis Particulate...particles on the interaction of coal combustion stack ash with organic matter......

Donald V. Kenny; Susan V. Olesik

1998-02-01T23:59:59.000Z

198

Recovery of Carbon and Nitrogen Cycling and Microbial Community Functionality in a Post-Lignite Mining Rehabilitation Chronosequence in East Texas  

E-Print Network [OSTI]

al., 2005). Organic carbon is important for 4 many soil processes, like water and nutrient holding capacity. On a larger scale, soil carbon sequestration is important for mitigating increasing atmospheric CO2 concentrations. Nitrogen... in determining the microbially-driven portion of ecosystem recovery and its influence on soil carbon sequestration. For the nitrogen side of the organic matter equation, mineralization rates were evaluated to determine nitrogen turnover rates. Mineralization...

Ng, Justin

2012-10-19T23:59:59.000Z

199

TECHNOLOGY  

Science Journals Connector (OSTI)

Fluidized Carbonization of Lignite Produces Cheap Fuel ... Developed by the Bureau of Mines, this process can utilize the reserves of lignite and subbituminous coal in that area to produce industrial fuel that will compete with natural gas at prevailing prices. ...

1953-05-18T23:59:59.000Z

200

The Ultimate Mineral Resource Situation—An Optimistic View  

Science Journals Connector (OSTI)

...ratio of 1600 years for known phosphate reserves and near-economic potential resources...that recovery from conventional ores, lignites, and phosphate rock can provide all...energy, molybdenum, and vana- dium from lignite. Copper represents a very different...

H. E. Goeller

1972-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "bitu subbitu lignite" 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

conC&ENtrates  

Science Journals Connector (OSTI)

Lignite Pioneer ... Texas, the promised land as far as natural gas is concerned (more than half of the nation's proved reserves), is right now making news with another important, but relatively unsung, raw material—lignite. ...

1951-08-13T23:59:59.000Z

202

Inventory of China's Energy-Related CO2 Emissions in 2008  

E-Print Network [OSTI]

kerosene other kerosene shale oil gas/diesel oil residualbituminous coal lignite oil shale other petroleum products (

Fridley, David

2011-01-01T23:59:59.000Z

203

Analysis of the densification of reclaimed surface mined land  

E-Print Network [OSTI]

with large oil and gas reserves, but with large lignite resources covering approximately one million acres underlain by some 10. 7 billion tons of lignite, having an energy content equivalent to 37. 7 billion barrels of oil (Kaiser, 1974). Nuch... with large oil and gas reserves, but with large lignite resources covering approximately one million acres underlain by some 10. 7 billion tons of lignite, having an energy content equivalent to 37. 7 billion barrels of oil (Kaiser, 1974). Nuch...

Schneider, William Joseph

2012-06-07T23:59:59.000Z

204

Pyrite oxidation in a minespoil environment: a lysimeter study  

E-Print Network [OSTI]

in Texas (Kaiser, 1985) . The depletion of lignite deposits is apparently not an immediate threat. However, the reclamation of lands disturbed by the "harvest" of these reserves is of immediate concern. To extract the lignite from the earth' s crust... in Texas (Kaiser, 1985) . The depletion of lignite deposits is apparently not an immediate threat. However, the reclamation of lands disturbed by the "harvest" of these reserves is of immediate concern. To extract the lignite from the earth' s crust...

Doolittle, James Joseph

2012-06-07T23:59:59.000Z

205

Hydrogeology and groundwater modeling of a Calvert Bluff aquifer  

E-Print Network [OSTI]

was 38. 9 million tons, of which 99% was lignite. Texas was the nation's sixth ranking coal producing state in 1983 (Kaiser, 1985). Commercial lignite reserves occur in lower Tertiary Eocene strata of the Texas coastal plain in the Wilcox Group... and others, 1980). Current economics dictate a maximum lignite mining depth of approximately 200 feet. Though lignite occur- rence and distribution below 200 feet is less certain, it is known that abundant reserves are available. Kai- ser and others...

Lawrence, James

2012-06-07T23:59:59.000Z

206

Impact of coal quality and gasifier technology on IGCC performance  

E-Print Network [OSTI]

it is estimated that 47 % of global coal reserves consist of lignite and sub-bituminous coals [2]. Several

207

Appropriate Combinations of Technology for Solving Landscape Management Problems  

E-Print Network [OSTI]

of these reserves to the major urban centers has increased the desir- ability of development of lignite as an energy Mining and Reclamation Texas Lignite and the Visual Resource: An Objective Approach to Visual Resource from natural gas to lignite (low grade coal) as the primary energy source. In 1979, there was only one

Standiford, Richard B.

208

Radioactivity of coals and ashes from Çatalazi coal-fired power plant in Turkey  

Science Journals Connector (OSTI)

......CFPPs installed in Turkey uses lignite, the catalagz CFPP uses the...basin, Turkey. The total reserve of the basin is estimated as...contents in feed coals from lignite-fired power plants in Western...equilibrium in the ashes produced in lignite-fired power plants. J......

Hüseyin Aytekin; Ridvan Baldik

2012-04-01T23:59:59.000Z

209

engineering home news home press releases subscribe to e-news annual re UT Arlington Moving Ideas from Laboratories to Marketplace  

E-Print Network [OSTI]

reserves for Texas lignite at current consumption rates. The Texas Ignition Fund grant will help create. Liquefaction of Texas Lignite to Low-cost Heavy Crude Oil Mechanical Engineering Assistant Professor Brian. Richard Billo have been funded to develop a low-cost process to convert lignite coal into heavy crude oil

Chiao, Jung-Chih

210

Orbital forcing in PliocenePleistocene Mediterranean lacustrine deposits: dominant expression of eccentricity versus precession  

E-Print Network [OSTI]

expression in this lignite±siliciclastic basin in detail with the time-equivalent lignite±carbonate basin of Ptolemais (northern Greece), the middle Pleistocene lignite±siliciclastic basin of Megalopolis (southern Elsevier Science B.V. All rights reserved. Keywords: Orbital forcing; Sedimentary cycles

Utrecht, Universiteit

211

ELSEVIER Palaeogeography, Palaeoclimatology, Palaeoecology 152 (1999) 283303 Sedimentary cycles and volcanic ash beds in the Lower Pliocene  

E-Print Network [OSTI]

Abstract A high-resolution cyclostratigraphy for the rhythmically bedded lignite­marl sequences volcanic ash beds. Detailed field reconnaissance in three open-pit lignite mines reveals three end-member sediment types: lignites, composed primarily of organic material; grey marls, a mixture of carbonate

Utrecht, Universiteit

212

ENERGY UTILIZATION AND ENVIRONMENTAL CONTROL TECHNOLOGIES IN THE COAL-ELECTRIC CYCLE  

E-Print Network [OSTI]

lb for anthracite. The reserves of lignite on a weight basisand reserves. Typical energy contents of coal range from about 7,000 for ligniteReserves of the United States, 1974 (Billion Tons). Underground Surface Total Energy Value (Quads) Subbituminous Lignite

Ferrell, G.C.

2010-01-01T23:59:59.000Z

213

Late Miocene to Early Pliocene depositional history of the intramontane FlorinaPtolemaisServia Basin, NW Greece  

E-Print Network [OSTI]

and lignites or clays, which were shown to be primarily related to precession-induced climate variations ([van in a lacustrine environment, frequently interrupted by deposition of clays and local xylite-type lignite seams lignites), with episodic periods of sub-aerial exposure continued until 5.23 Ma. From then onwards up to 3

Utrecht, Universiteit

214

DOE/NETL's Mercury Emissions Control Technology R&D Program  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Mercury Emissions Control Mercury Emissions Control Technology R&D Program LRC and Lignite Industry Meeting August 27-28, 2002 Bismarck, ND Thomas J. Feeley, III, Product Manager Innovations for Existing Plants LigniteResearch_TJF,082702 Presentation Outline * About NETL * IEP Program * Hg Background * Hg and lignite coals * Hg Control R&D LigniteResearch_TJF,082702 About NETL LigniteResearch_TJF,082702 * One of DOE's 17 national labs * Government owned / operated * Sites in: - Pennsylvania - West Virginia - Oklahoma - Alaska * More than 1,100 federal and support contractor employees National Energy Technology Laboratory LigniteResearch_TJF,082702 Electric Power Using Coal Clean Liquid Fuels Natural Gas Coal Production Environmental Control V21 Next Generation Carbon Sequestration Exploration & Production Refining &

215

Dow and Independent Power-- Yesterday, Today, Tomorrow  

E-Print Network [OSTI]

in 1986. With a firm lignite reserve position and efficient gas turbines, the final step of Dow's energy strategy was to develop the gasification process to produce syngas from lignite for use in our gas turbines. Dow began research on this process... in 1973 when we first purchased lignite re serves. The effort turned out to be the largest single research program in Dow's history. The combination of the gasification process unit with a combined-cycle turbine is called the integrated gasification...

Brunt, J. E.

216

Devolatilization and Combustion Kinetics of Low-Rank Coal Blends from Dynamic Measurements  

Science Journals Connector (OSTI)

Of the 6.7 billion tons of proven reserves, 3.85 billion tons are mineable, while indicated reserves amount to 1.6 billion tons and inferred reserves are estimated at 2.3 billion tons. ... The annual lignite production is over 63.5 million tons, which makes Greece the second-largest lignite producer in the European Community market. ... (12)?Ceylan, K.; Karaca, H.; Önal, Y. Thermogravimetric Analysis of Pretreated Turkish Lignites. ...

D. Vamvuka; E. Kastanaki; M. Lasithiotakis

2003-08-27T23:59:59.000Z

217

SAS Output  

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

4. Weighted Average Cost of Fossil Fuels for the Electric Power Industry, 2002 through 2012 Coal Petroleum Natural Gas Total Fossil Bituminous Subbituminous Lignite All Coal Ranks...

218

SciTech Connect: Systems and economic analysis of microalgae...  

Office of Scientific and Technical Information (OSTI)

01 COAL, LIGNITE, AND PEAT; 09 BIOMASS FUELS; BIOMASS; PRODUCTION; CARBON DIOXIDE; AIR POLLUTION CONTROL; METABOLISM; WASTE PRODUCT UTILIZATION; ALGAE; CULTIVATION; COAL;...

219

Word Pro - Untitled1  

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

Coal Production, 1949-2011 Total By Rank By Mining Method By Location 200 U.S. Energy Information Administration Annual Energy Review 2011 Anthracite Lignite Subbituminous...

220

Electric Reliability & Hurricane Preparedness Plan  

E-Print Network [OSTI]

· Clean coal technology · On line ­ May 2014 · Generation mix: Natural gas, coal and lignite · Base load

Note: This page contains sample records for the topic "bitu subbitu lignite" 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

Microsoft Word - DOE QER meeting on Gas-Electric interdependency...  

Energy Savers [EERE]

purchase agreements with coal and lignite fired generation plants, as well as a hydroelectric facility. Brazos, as well as ERCOT, is heavily dependent upon natural gas for...

222

NETL F 451.1-1/1 Categorical Exclusion (CX) Designation Form  

Broader source: Energy.gov (indexed) [DOE]

05012010 - 04302011 Grand Forks, North Dakota Capitalizing on CO2 Storage in Lignite Coal: Biological In Situ Methane Production Subtask 2.10 would investigate potential...

223

CX-002497: Categorical Exclusion Determination | Department of...  

Broader source: Energy.gov (indexed) [DOE]

Categorical Exclusion Determination Capitalizing on Carbon Dioxide Storage in Lignite Coal: Biological In Situ Methane Production CX(s) Applied: B3.6 Date: 06022010...

224

E-Print Network 3.0 - activated carbon-based adsorbents Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

two primary elements, the filter media (activated carbon or lignite coke) to adsorb pollutants... in that Marker's past experience has been that Hg capture with carbon or carbon...

225

SAS Output  

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

Coal Production and Number of Mines by State and Coal Rank, 2012" "(thousand short tons)" ,"Bituminous",,"Subbituminous",,"Lignite",,"Anthracite",,"Total" "Coal-Producing","Number...

226

China Energy Primer  

E-Print Network [OSTI]

reserves, 54.4% were bituminous (including anthracite), 29.4% were sub-bituminous, and 16.2% were lignite.

Ni, Chun Chun

2010-01-01T23:59:59.000Z

227

Comecon tackles the energy crisis  

Science Journals Connector (OSTI)

... , a network of thermal power stations will be brought into the grid, fired by lignite, of which there are abundant local supplies.

Vera Rich

1979-08-09T23:59:59.000Z

228

Pamela Link, McLean County Commission Chairperson, U.S. Department...  

Energy Savers [EERE]

spotlight. The state's energy portfolio includes not only decades of oil and natural gas reserves, but also, wind and hydroelectric and an estimated 800 years' worth of lignite....

229

Low-Grade Coals: A Review of Some Prospective Upgrading Technologies  

Science Journals Connector (OSTI)

These are commonly lignites or sub-bituminous coals. ... The earliest upgrading of high-moisture lignite involved drying and manufacturing of briquettes. ... It can therefore be concluded that, because reserves for low-grade coals are quite plentiful, it is important to intensify efforts that will make these coals usable in an acceptable manner in terms of energy efficiency and environmental protection. ...

Hassan Katalambula; Rajender Gupta

2009-06-15T23:59:59.000Z

230

Pollen record and integrated high-resolution chronology of the early Pliocene Dacic Basin (southwestern Romania)  

E-Print Network [OSTI]

, the regional lignite stratigraphy, records of large and small mammals, large climatic fluctuations according kyrs eccentricity cycles are clearly identified. © 2006 Elsevier B.V. All rights reserved. Keywords: Pliocene; Lignite; Pollen; Magnetostratigraphy; Cyclostratigraphy; Romania 1. Introduction The western part

Utrecht, Universiteit

231

ELSEVIER Earth and Planetary Science Letters 164 (1998) 535551 Magnetostratigraphy-based astronomical tuning of the early Pliocene  

E-Print Network [OSTI]

Ptolemais basin in NW Greece display rhythmical alternations of lignite and marl beds. Three parallel. Sci. Lett. 104 (1991) 211­225] -- on a bed-to-bed scale. It is concluded that lignite corresponds continental Greece. © 1998 Elsevier Science B.V. All rights reserved. Keywords: magnetostratigraphy; fluvi

Utrecht, Universiteit

232

Stimulation of Methane Generation from Nonproductive Coal by Addition of Nutrients or a Microbial Consortium  

Science Journals Connector (OSTI)

...dearth of methanogenic activity within lignite-rich beds, whereas activity was higher...organic carbon, particularly near the lignite interface. This suggests that environmental...distribution of the worlds natural gas reserves and resources. CRS report 96-4. Congressional...

Elizabeth J. P. Jones; Mary A. Voytek; Margo D. Corum; William H. Orem

2010-09-03T23:59:59.000Z

233

Experimental Study on Microwave Pyrolysis of an Indonesian Low-Rank Coal  

Science Journals Connector (OSTI)

Microwave pyrolysis of an Indonesian lignite is investigated in this study. ... About half of the world’s coal reserves are low-rank coals. ... Considerable amts. of 3,4-dihydro-1(2H)-naphthalenone (alpha-tetralone) were found in the oil fractions of lignites treated by microwave energy. ...

Nan Wang; Jianglong Yu; Arash Tahmasebi; Yanna Han; John Lucas; Terry Wall; Yu Jiang

2013-10-14T23:59:59.000Z

234

PII: S0006-3207(96)00097-3 Biological Conservation 79 (1997) 187 195  

E-Print Network [OSTI]

Published by Elsevier Science Limited Printed in Great Britain. All rights reserved 0006-3207/97 $17.00 + .00 COLONIZATION OF SPOIL BENCHES OF AN OPENCAST LIGNITE MINE IN NORTHWEST SPAIN BY AMPHIBIANS Colonization by reptiles and amphibians of the spoil benches of the Meirama opencast lignite mine in north

Galán, Pedro

235

This article appeared in a journal published by Elsevier. The attached copy is furnished to the author for internal non-commercial research  

E-Print Network [OSTI]

of Washington. Published by Elsevier Inc. All rights reserved. Introduction Large scale excavations took place in an open cast lignite quarry, south of Halle (Germany), where the archaeology-related movements in the underlying Tertiary lignite deposits (Eissmann, 2002, Mania and Mania, 2008) (Fig. 1

Utrecht, Universiteit

236

DOE-Sponsored Field Test Finds Potential for Permanent Storage of CO2 in  

Broader source: Energy.gov (indexed) [DOE]

Field Test Finds Potential for Permanent Storage of Field Test Finds Potential for Permanent Storage of CO2 in Lignite Seams DOE-Sponsored Field Test Finds Potential for Permanent Storage of CO2 in Lignite Seams November 4, 2010 - 1:00pm Addthis Washington, DC - A field test sponsored by the U.S. Department of Energy (DOE) has demonstrated that opportunities to permanently store carbon in unmineable seams of lignite may be more widespread than previously documented. This finding supports national efforts to address climate change through long-term storage of CO2 in underground geologic reservoirs. Lowering the core barrel at the PCOR Partnership lignite site.The PCOR Partnership, one of seven partnerships in DOE's Regional Carbon Sequestration Partnership Program, collaborated with Eagle Operating Inc. (Kenmare, N.D.) to complete the field test in Burke County, N.D. In March

237

NETL: Gasification  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Coal: Coal Ranks Coal: Coal Ranks CLICK ON GRAPHIC TO ENLARGE This figure shows the locations and type for all of the coal deposits in the U.S. This figure shows the locations and type for all of the coal deposits in the U.S.2 Coal Types The four main types, or ranks, of coal are: Lignite - Sometimes called "brown coal," lignite is the youngest of the coal types, and has the lowest energy content, containing between 25 and 35 percent carbon. Lignite usually has not been subjected to the extreme temperatures and pressures typical of the higher energy content coal types. It is crumbly, has a high moisture content, and is typically burned in power plants for electrical production. About 20 lignite mines produce about 7 percent of total US produced coal, mostly in Texas and

238

Development and Application of Advanced Models for Steam Hydrogasification: Process Design and Economic Evaluation  

E-Print Network [OSTI]

index.htm 17. Higman C. Gasification. 2 nd edition. Boston:J, Cheremisinoff NP. Gasification Technologies: A Primer forof lignite char pressurized gasification with CO 2 , H 2 and

Lu, Xiaoming

2012-01-01T23:59:59.000Z

239

Coal-to-Liquids in the U S Status and Activities  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Choctaw Co., MS, Lignite 13. RentechAdams Co., Natchez, MS, 160020,000 Bpd, Coal PetcokeBiomass, 2011 Ph 1 3. Synfuel, Inc.GEHaldoe-Topsoe NACCExxonMobil, Ascension...

240

Coal-CO[subscript 2] Slurry Feed for Pressurized Gasifiers: Slurry Preparation System Characterization and Economics  

E-Print Network [OSTI]

Gasification-based plants with coal-CO[subscript 2] slurry feed are predicted to be more efficient than those with coal-water slurry feed. This is particularly true for high moisture, low rank coal such as lignite. ...

Botero, Cristina

Note: This page contains sample records for the topic "bitu subbitu lignite" 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

Underground Coal Gasification at Tennessee Colony  

E-Print Network [OSTI]

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

Garrard, C. W.

1979-01-01T23:59:59.000Z

242

ENERGY & ENVIRONMENT DIVISION. ANNUAL REPORT FY 1980  

E-Print Network [OSTI]

with Neutron Activated Coal Fly Ash," Environmental ScienceDistribution in Coal Fly Ash Particles," EnvironmentalLignite Subbituminous Coal- - Wyodak Ash H/C 0/C Do alcohols

Authors, Various

2010-01-01T23:59:59.000Z

243

Production of low ash coal by thermal extraction with N-methyl-2-pyrrolidinone  

Science Journals Connector (OSTI)

Present study was conducted for the purpose of producing low ash coal from LRC (low rank coals) such as lignite and sub-bituminous coal through thermal extraction using polar solvent. Extraction from bituminous coal

Sang Do Kim; Kwang Jae Woo; Soon Kwan Jeong…

2008-07-01T23:59:59.000Z

244

Mineral Leases by Political Subdivisions (Texas)  

Broader source: Energy.gov [DOE]

This legislation authorizes local political subdivisions to lease lands they own for the development of mineral interests, including coal and lignite. A public hearing process is required prior to...

245

Impacts of feral hogs on reclaimed surface-mined lands in eastern Texas: a management perspective  

E-Print Network [OSTI]

January 1998 - January 1999 at Big Brown Lignite Mine in Freestone County, Texas. Annual range size, habitat use, habitat selection, and diel movements of the feral hogs were determined using a geographic information system. Corral traps were more...

Mersinger, Robert C.

2012-06-07T23:59:59.000Z

246

Palynology and Paleoecology of the Lake Somerville spillway section, Late Eocene Manning Formation (Jackson Group), east-central Texas  

E-Print Network [OSTI]

Eocene section. Fern-dominated associations grew on freshwater siliciclastic and peat substrates. Closed-canopy forest dominated by Momipites coryloides with Quercoidites inamoenus and either Nyssapollenites or Cupuliferoipollenites grew in lignite swamps...

Sancay, Recep Hayrettin

2012-06-07T23:59:59.000Z

247

Stratigraphy of the Calvert Bluff Formation of the Wilcox Group, Brazos County, Texas  

E-Print Network [OSTI]

-delatic sediments. However, with the application of regional and detailed analyses, a new model has been developed. Lignite zones within the Calvert Bluff and Simsboro formations are of particular interest. These zones represent depositional environments...

May, Audrey Gail

2012-06-07T23:59:59.000Z

248

Potential Methods for Converting Coal into Gasification Products for Reduced Global Warming  

Science Journals Connector (OSTI)

Turkey has huge lignite reserves although they have high ash, sulfur, and volatile matter. The direct usage of this fossil fuel has disadvantages such as fouling, acid rains, greenhouse gases (GHGs), etc. Greenho...

Jale Gülen

2013-01-01T23:59:59.000Z

249

Public Health Benefits of End-Use Electrical Energy Efficiency in California: An Exploratory Study  

E-Print Network [OSTI]

fuel, lignite, and petroleum coke and/ or crude oil), 86% ofalternatives such as petroleum coke and/ or crude oil withinEFj,js relevant to petroleum coke and crude oil were not

McKone, Thomas E.

2011-01-01T23:59:59.000Z

250

State of Industrial Fluidized Bed Combustion  

E-Print Network [OSTI]

A new combustion technique has been developed in the last decade that permits the burning of low quality coal, lignite and other fuels, while maintaining stack emissions within State and Federal limits. Low quality fuels can be burned directly...

Mesko, J. E.

1982-01-01T23:59:59.000Z

251

Life Cycle Analysis of the Production of Aviation Fuels Using the CE-CERT Process  

E-Print Network [OSTI]

based feedstock (e.g. , coal, lignite). The products, asJet A & Jet A-1……………………2 Table.2: Coal and biosolid physicalconsumption for coal mining and transportation………………. …23

Hu, Sangran

2012-01-01T23:59:59.000Z

252

Word Pro - Untitled1  

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

1 Table 7.2 Coal Production, Selected Years, 1949-2011 (Million Short Tons) Year Rank Mining Method Location Total 1 Bituminous Coal 1 Subbituminous Coal Lignite Anthracite 1...

253

Word Pro - Untitled1  

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

5 Table 7.9 Coal Prices, Selected Years, 1949-2011 (Dollars per Short Ton) Year Bituminous Coal Subbituminous Coal Lignite 1 Anthracite Total Nominal 2 Real 3 Nominal 2 Real 3...

254

Conversion of Methane and Carbon Dioxide to Higher Value Products  

Science Journals Connector (OSTI)

Currently, proven world natural gas reserves are estimated to 6609 trillion cubic feet or around 187 trillion cubic meters according to the latest reports (U.S. Energy Information Administration, Figure 1). ... lignite ...

Vesna Havran; Milorad P. Dudukovi?; Cynthia S. Lo

2011-05-23T23:59:59.000Z

255

Biogeochemistry of Microbial Coal-Bed Methane  

E-Print Network [OSTI]

.1146/annurev-earth-040610-133343 Copyright c 2011 by Annual Reviews. All rights reserved 0084 known as coalification; progresses from peat through lignite, subbituminous coal, bituminous coal

Macalady, Jenn

256

Curriculum Support Maps for the Study of Indiana Coal  

E-Print Network [OSTI]

": lignite, subbituminous, bituminous, and anthracite. Indiana coals are bituminous and composed of 55 to 79 nearly 17 billion tons is recoverable. These reserves could last another 585 years at the current rate

Polly, David

257

The Geology and Mineral Resources of the Serb-Croat-Slovene State: Being the Report of the Geologist attached to the British Economic Mission to Serbia  

Science Journals Connector (OSTI)

... it is shown that true bituminous coal is very scarce, but that there are considerable reserves of ... of lignites, which amount probably to about 1900 millions of tons, whilst the possible ...

H. L.

1922-07-08T23:59:59.000Z

258

Uranyl Precipitation by Pseudomonas aeruginosa via Controlled Polyphosphate Metabolism  

Science Journals Connector (OSTI)

...coli indicates that the ability to turn over polyphosphate reserves was more important for metal resistance than simply the ability...1021-1022. 12 Glombitza, F. 2001. Treatment of acid lignite mine flooding water by means of microbial sulfate reduction...

Neil Renninger; Roger Knopp; Heino Nitsche; Douglas S. Clark; Jay D. Keasling

2004-12-01T23:59:59.000Z

259

NETL: Gasifier Optimization  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

that the gasifier effectively handles low-rank coals (e.g., Powder River Basin lignite), which account for half of the worldwide coal reserves but are often considered...

260

Chronology and integrated stratigraphy of the Miocene Sinj Basin (Dinaride Lake System, Croatia)  

E-Print Network [OSTI]

in the upper part of the basin stratigraphy. © 2010 Elsevier B.V. All rights reserved. 1. Introduction During), providing an excellent opportunity to study evolution in an isolated system. Moreover, lignite deposits

Utrecht, Universiteit

Note: This page contains sample records for the topic "bitu subbitu lignite" 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

Organic compounds in water extracts of coal: links to Balkan endemic nephropathy  

Science Journals Connector (OSTI)

Most of the world’s energy is provided by fossil fuels, and coal is the world’s most abundant fossil fuel with reserves substantially greater than those of oil and...2008). “Lignite” ranks in between peat and sub...

S. V. M. Maharaj; W. H. Orem; C. A. Tatu…

2014-02-01T23:59:59.000Z

262

Effect of Lake Trophic Status and Rooted Macrophytes on Community Composition and Abundance of Ammonia-Oxidizing Prokaryotes in Freshwater Sediments  

Science Journals Connector (OSTI)

...moderately acidic heathland pools in northwest Germany (nature reserve Heiliges Meer). For details, see Table 1. Sediment cores...A. 1999. Juncus bulbosus as a pioneer species in acidic lignite mining lakes: interactions, mechanisms and survival strategies...

Martina Herrmann; Aaron M. Saunders; Andreas Schramm

2009-03-20T23:59:59.000Z

263

This article appeared in a journal published by Elsevier. The attached copy is furnished to the author for internal non-commercial research  

E-Print Network [OSTI]

peak. Lignite also shared similar spectra and functional group distributions to BC reference materials lim- itations for the technique were addressed. Ã? 2011 Elsevier Ltd. All rights reserved. 1

Lehmann, Johannes

264

Integrated stratigraphy of the Early Miocene lacustrine deposits of Pag Island (SW Croatia): Palaeovegetation and environmental changes in the  

E-Print Network [OSTI]

lignite deposition and shallow lake facies. This suggests that both records are dominantly controlled Optimum. © 2009 Elsevier B.V. All rights reserved. 1. Introduction The Dinarids, and other areas

Utrecht, Universiteit

265

Argonne Premium Coal Sample Bank The Argonne Premium Coal (APC) Sample Bank can supply  

E-Print Network [OSTI]

. The sample bank consists of eight coals, including lignite, subbituminous coal, high volatile, medium by a variety of techniques. Five-gallon carboys hold about 80% of the batch in reserve for filling more

Maranas, Costas

266

Proceedings of ASME Turbo Expo 2010 June 14-18, 2010, Glasgow, Scotland  

E-Print Network [OSTI]

) steam electric plants [1, 2]. For lower rank subbituminous coals and lignites, which comprise fully half of the world's coal reserves [3], the relative economics are less clear. To help clarify this issue, we

267

advanced search RESEARCH TOOLS  

E-Print Network [OSTI]

( K $ K : Copyright © The Economist Newspaper Limited 2006. All rights reserved. Advertising Info Expressions of Interest for The Development of a New Lignite Mining Facility and Associated New Electric

Boult, Terrance E.

268

E-Print Network 3.0 - acid content contributes Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

< 1 2 3 4 5 > >> Page: << < 1 2 3 4 5 > >> 41 Preserved lignin structures in Miocene-aged lignite lithotypes, Bulgaria Summary: .5; humovitrain, 6.7; liptain, 6.4; and humoclarain,...

269

Production of Oil from Coal in Germany  

Science Journals Connector (OSTI)

... British Commonwealth there are cheaper supplies of coal than in Great Britain, as well as reserves of brown coal and ... of brown coal and lignite. Dr. Parker stated that bombing attacks between May and September 1944 caused a reduction ...

1947-02-01T23:59:59.000Z

270

Palaeoenvironmental evolution of Lake Gacko (Southern Bosnia and Herzegovina): Impact of the Middle Miocene Climatic Optimum on the Dinaride Lake System  

E-Print Network [OSTI]

.8 and ~15.2 Ma. The economically valuable lignite accumulations in the lower part of the succession rights reserved. 1. Introduction The Dinaride­Anatolian land formed a major barrier between Paratethys

Utrecht, Universiteit

271

advanced search RESEARCH TOOLS  

E-Print Network [OSTI]

+ G + + G & G $ ; % G + * G Copyright © The Economist Newspaper Limited 2006. All rights reserved.... # Requests Expressions of Interest for The Development of a New Lignite Mining Facility and Associated New

Boult, Terrance E.

272

Linking heavy metal bioavailability (Cd, Cu, Zn and Pb) in Scots pine needles to soil properties in reclaimed mine areas  

E-Print Network [OSTI]

concentrations in mine soils. An exception was in the case of Cd in soils on sand quarry and hard coal spoil heap. Introduction Post-mining facilities such as open pit quarries, lignite mine spoil heaps, open pit sulphur mine

Battles, John

273

Siderite, oxidation, and neutralization potential determination  

E-Print Network [OSTI]

Due to the nature of native soils overlying lignite seams in Texas, mixed overburden is allowed as a topsoil substitute. Determination of suitable topsoil replacements is based on chemical analysis, including neutralization potential (NP), a...

Porter, Elizabeth Brooke

2012-06-07T23:59:59.000Z

274

Geology of the Roan's Prairie-West area, Grimes County, Texas  

E-Print Network [OSTI]

vaters pasture landes and possible reserves of oil and gas are the most valuable natural resources in this area. Pine forests, road metals building stones, lignites and bentonite clay are potential valuable resources, but none are utilised at present... vaters pasture landes and possible reserves of oil and gas are the most valuable natural resources in this area. Pine forests, road metals building stones, lignites and bentonite clay are potential valuable resources, but none are utilised at present...

Pedrotti, Daniel Anthony

2012-06-07T23:59:59.000Z

275

NETL: Mercury Emissions Control Technologies - Mercury Control For Plants  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Mercury Control For Plants Firing Texas Lignite and Equipped with ESP-wet FGD Mercury Control For Plants Firing Texas Lignite and Equipped with ESP-wet FGD URS Group, Inc., in collaboration with EPRI, Apogee Scientific, AEP, Texas Genco, and TXU Power, ADA-ES, will evaluate sorbent injection for mercury control in an 85/15 blend Texas lignite/PRB derived flue gas, upstream of a cold-side ESP – wet FGD combination. Full-scale sorbent injection tests conducted with various sorbents and combinations of fuel and plant air pollution control devices (APCD) have provided a good understanding of variables that affect sorbent performance. However, many uncertainties exist regarding long-term performance and data gaps remain for specific plant configurations. For example, sorbent injection has not been demonstrated at full-scale for plants firing Texas lignite, which represent approximately 10% of the annual U.S. power plant mercury emissions. The low and variable chloride content of Texas lignite may pose a challenge to achieving high levels of mercury removal with sorbent injection. Furthermore, activated carbon injection may render the fly ash unsuitable for sale, posing an economic liability to Texas lignite utilities. Alternatives to standard activated carbon, such as non-carbon sorbents and alternate injection locations (Toxecon II), have not been fully explored. Toxecon II involves sorbent injection in the middle field(s) of an ESP, thus preserving the integrity of the fly ash in the first fields.

276

Naturally Occurring Radionuclides of Ash Produced by Coal Combustion. The Case of the Kardia Mine in Northern Greece  

SciTech Connect (OSTI)

West Macedonia Lignite Center (WMLC), located in Northwest Greece, releases into the atmosphere about 21,400 tons/year of fly ash through the stacks of four coal fired plants. The lignite ash contains naturally occurring radionuclides, which are deposited on the WMLC basin. This work investigates the natural radioactivity of twenty six ash samples, laboratory produced from combustion of lignite, which was sampled perpendicularly to the benches of the Kardia mine. The concentrations of radionuclides {sup 40}K, {sup 235}U, {sup 238}U, {sup 226}Ra, {sup 228}Ra and {sup 232}Th, were measured spectroscopically and found round one order of magnitude as high as those of lignite. Subsequently the Radionuclide Partitioning Coefficients of radionuclides were calculated and it was found that they are higher for {sup 232}Th, {sup 228}Ra and {sup 40}K, because the latter have closer affinity with the inorganic matrix of lignite. During combustion up to one third of the naturally occurring radioisotopes escape from the solid phase into the flue gases. With comparison to relative global data, the investigated ash has been found to have relatively high radioactivity, but the emissions of the WMLC radionuclides contribute only 0.03% to the mean annual absorbed dose.

Fotakis, M.; Tsikritzis, L.; Tzimkas, N.; Kolovos, N.; Tsikritzi, R. [Technological Educational Institute (TEI) of West Macedonia, Department of Pollution Control Technologies, Koila, Kozani, 50100 (Greece)

2008-08-07T23:59:59.000Z

277

NETL: News Release - Regional Partner Launches Drilling Test in DOE's  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

August 30, 2007 August 30, 2007 Regional Partner Launches Drilling Test in DOE's Carbon Sequestration Program Project Focuses on Greenhouse Gas Storage in Lignite Seam, Methane Gas Recovery MORGANTOWN, WV - As an integral part of the U.S. Department of Energy's effort to develop carbon sequestration technologies to capture and permanently store greenhouse gases, the Plains CO2 Reduction (PCOR) Partnership has begun drilling operations to determine the suitability of a North Dakota lignite coal seam to simultaneously sequester the greenhouse gas carbon dioxide and produce valuable coalbed methane. The PCOR Partnership-one of seven partnerships in the Department of Energy's Regional Carbon Sequestration Partnership Program, which is managed by the National Energy Technology Laboratory-plans to inject at least 400 tons of CO2 to a depth of approximately 1,200 feet into an unminable lignite seam in Burke County, ND.

278

ITP Mining: Energy and Environmental Profile of the U.S. Mining Industry: Chapter 2: Coal  

Broader source: Energy.gov (indexed) [DOE]

2 2 Coal Coal is a mixture of organic mineral material produced by a natural process of growth and decay, or an accumulation of debris both vegetal and mineral with some sorting and stratification. The process is accomplished by chemical, biological, bacteriological and metamorphic action. 1 Forms of Coal Coal is a hydrocarbon that is classified according to the amount of heat it produces. Heat content depends upon the amount of fixed carbon it contains. Rank is the degree of progressive alteration in the transformation from lignite to anthracite. There are four primary ranks of coal: * Anthracite (semi-anthracite, anthracite, and meta-anthracite) * Bituminous (high-volatile, medium-volatile, and low-volatile) * Subbituminous * Lignite (brown coal and lignite)

279

Field Testing of Activated Carbon Injection Options for Mercury Control at TXU's Big Brown Station  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Field TesTing oF AcTivATed cArbon Field TesTing oF AcTivATed cArbon injecTion opTions For Mercury conTrol AT TXu's big brown sTATion Background The 2005 Clean Air Mercury Rule will require significant reductions in mercury emissions from coal-fired power plants. Lignite coal is unique because of its highly variable ash content (rich in alkali and alkaline-earth elements), high moisture levels, low chlorine content, and high calcium content. Unique to Texas lignite coals are relatively high iron and selenium concentrations. When combusting Texas lignite coals, up to 80 percent of the mercury in the flue gas is present as elemental mercury, which is not readily captured by downstream pollution control devices. To better understand the factors that influence mercury control at units firing

280

Computer-aided examination and forecast of strength properties of heterogeneous coal-beds  

Science Journals Connector (OSTI)

In the present paper movable cellular automata (MCA) method was applied for investigation of features of damages generation and fracture process of the lignite. The computer-aided simulation of standard experimental tests – uniaxial loading – was carried out. Cylindrical specimens with standard size were tested. Results of calculations show that mechanism of fracture of different coal categories turns from purely brittle to quasi-plastic. On the base of obtained data an analysis of the influence of lignite composition on fracture and strength of cylindrical specimens was carried out.

S.G Psakhie; S Zavshek; J Jezershek; E.V Shilko; A.I Dmitriev; A.Yu Smolin; S Blatnik

2000-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "bitu subbitu lignite" 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

Input-output analysis as a method of evaluation of the economic impact of water resources development  

E-Print Network [OSTI]

or as resources of low-cost energy. Gas fields and gas transmis- sion lines are extensive and generally accessible from most points. Abundant supplies of shut-in gas are locally avail- able, commonly at low relative cost, in areas distant from gas transmission... lines. ~LL 5. t Abundant reserves of low coal or lignite are impor- tant low-cost energy sources. In recent years lignite was mined at Malakoff, Henderson County, for fuel in generating power at Texas Power and Light Company's Trinidad station...

Canion, Robert Larry

2012-06-07T23:59:59.000Z

282

Assessment of operating parameter variation on electrostatic precipitator performance  

E-Print Network [OSTI]

lignite coal were collected and resistivity analysis performed for varying conditions of temperature and humidity. As a result of the laboratory analysis, it was determined that moisture and temperature conditioning of Texas lignite coal fly ash...verized coal 1 25 50 Electric ~ower Fly ash from ~clc f f c 6 60 B5 0. 7 Cement Ki1n dust 1 20 40 10 Steel Blast furnace 5 30 60 Steel 9 N -h th f f. 90 98 99 Nonferrous Copper roaster smelters dust 10 Nonferrous Converter fur- smelters nace...

Gunn, Roam Anthony

1974-01-01T23:59:59.000Z

283

Solvent–Coal–Mineral Interaction during Solvent Extraction of Coal  

Science Journals Connector (OSTI)

The solvent extraction of Poplar lignite coal was studied with three model solvents (tetralin, quinoline, and 1-naphtol) and one industrial coal liquid derived solvent. ... Thanks to its wide distribution and large reserves, coal is a feasible local substitute feed material for conventional crude oil in many countries. ... Physical dissolution dominates at lower temperature, around 200 °C and lower temperatures for lignites; the role of the solvent is to relax the coal matrix and drag soluble molecules from the coal into the bulk solvent phase. ...

Mariangel Rivolta Hernández; Carolina Figueroa Murcia; Rajender Gupta; Arno de Klerk

2012-10-26T23:59:59.000Z

284

Recent Developments in the Regulation of Electric Utility Resource Planning in Texas  

E-Print Network [OSTI]

additional system reserves that will increase the cost to ratepayers. The biennial report provides a comprehensive summary of important planning issues and an outlook on resource planning for the industry as a whole. Projections of Demand The results... the year 2001 of TU Electric's two 75D megawatt lignite-fueled Twin Oak units, TNP's 149 megawatt lignite-fueled TNP One unit 3, and 1,242 megawatts of various utilities' unnamed gas-fueled units. Staffs recommendations are compatible with recent trends...

Totten, J.; Adib, P.; Matlock, R.; Treadway, N.

285

Gasification of New Zealand Coals: A Comparative Simulation Study  

Science Journals Connector (OSTI)

The aim of this study was to conduct a preliminary feasibility assessment of gasification of New Zealand (NZ) lignite and sub-bituminous coals, using a commercial simulation tool. ... Coal is a nonrenewable resource; however, the world’s coal reserves amount to twice the combined oil and gas reserves. ... The reasons for the entrained flow gasifier selection include its high suitability to low rank coals (lignites) and the use of entrained flow gasifiers for an IGCC as the industrially preferred choice dictated through experience. ...

Smitha V. Nathen; Robert D. Kirkpatrick; Brent R. Young

2008-06-10T23:59:59.000Z

286

les jabots des abeilles taient beaucoup plus remplis et la dissection et l'analyse ont t  

E-Print Network [OSTI]

of tar of brown coal and19 million tons of mineral oil have been processed into the final-products bitumin, paraffine, fuel, petrol and coke in the tar factory Rositz (Altenburger Land) from 1917 1990, 19 millions de tonnes de goudron de lignite ont été tranformés en coke, bitume et paraffine, et19

Paris-Sud XI, Université de

287

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

E-Print Network [OSTI]

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

288

JOURNAL DE PHYSIQUE Colloque C7, suppl6ment au n012, Tome 49, d6cembre 1988  

E-Print Network [OSTI]

is necessary for the economy of the power plant run by an ICF reactor. In Fig. 1 we show the electrical power flow in an ICF power plant. Article published online by EDP Sciences and available at http volume et celui relatif h l'ignition centrale. Ce dernier est superieur au precedent. Une simulation

Boyer, Edmond

289

PALYNOMORPH BIOZONES IN THE CONTEXT OF CHANGING PALEOCLIMATE, MIDDLE EOCENE TO LOWER OLIGOCENE OF THE NORTHWEST GULF OF MEXICO  

Science Journals Connector (OSTI)

...are above a bentonite bed dated at 41.85 Ma. Alabama Ferry landing - Wheelock Member of the Crockett Formation - 2 samples. Exposures downstream...µRAYMOND, A.R., PHILLIPS, M.K., GENNETT, J.A., and COMET, P.A. 1997 Palynology and paleoecology of lignites from...

WILLIAM C. ELSIK; THOMAS E. YANCEY

290

The material footprint of nations  

Science Journals Connector (OSTI)

...other solid energy materials/carriers A.4.1.1: Brown coal (lignite) A.4.1.2: Hard coal A.4.1.3: Oil shale and tar sands* A.4.1.4: Peat A.4.2: Liquid and gaseous energy materials/carriers A.4.2.1: Crude...

Thomas O. Wiedmann; Heinz Schandl; Manfred Lenzen; Daniel Moran; Sangwon Suh; James West; Keiichiro Kanemoto

2013-01-01T23:59:59.000Z

291

Determination of Anions in Cooling Tower Wastewater from Coal Gasification by Ion Chromatography  

Science Journals Connector (OSTI)

......oxygen-blown slagging fixed-bed gasifier utilizing lignite in the United...Dakota. During this research, gasifier wastewater was prepared as...reaction of the ion in an acid medium to form a colored complex...data interpretation. Sample Gasifier wastewater was produced from......

Michael E. Potts; Todd A. Potas

1985-09-01T23:59:59.000Z

292

Design assessment of a 150 kWt CFBC Test Unit  

SciTech Connect (OSTI)

For clean and efficient energy generation from coal, the most suitable technology known to date is 'Fluidized Bed Combustion' technology. Applications of circulating fluidized bed (CFB) combustion technology have been steadily increasing in both capacity and number over the past decade. Designs of these units have been based on the combustion tests carried out in pilot scale facilities to determine the combustion and desulfurization characteristics of coal and limestone reserves in CFB conditions. Similarly, utilization of Turkish lignites in CFB boilers necessitates adaptation of CFB combustion technology to these resources. However, the design of these test units are not based on firing coals with high ash, volatile matter and sulfur contents like Turkish lignites. For this purpose, a 150 kWt CFB combustor test unit is designed and constructed in Chemical Engineering Department of Middle East Technical University, based on the extensive experience acquired at the existing 0.3 MWt Bubbling Atmospheric Fluidized Bed Combustor (AFBC) Test Rig. Following the commissioning tests, a combustion test is carried out for investigation of combustion characteristics of Can lignite in CFB conditions and for assessment of the design of test unit. Comparison of the design outputs with experimental results reveals that most of the predictions and assumptions have acceptable agreement with the operating conditions. In conclusion, the performance of 150 kWt CFBC Test Unit is found to be satisfactory to be utilized for the long term research studies on combustion and desulfurization characteristics of indigenous lignite reserves in circulating fluidized bed combustors. (author)

Batu, A. [Mimag-Samko Energy Technologies Inc., Armada Is Merkezi Kat: 5, No: 4 Sogutozu, Ankara (Turkey); Selcuk, N.; Kulah, G. [Middle East Technical University, Chemical Engineering Department, 06531 Ankara (Turkey)

2010-04-15T23:59:59.000Z

293

Leonardite char adsorbents  

DOE Patents [OSTI]

A process of preparing lignite (low rank) coal filter material, suitable for use in lieu of more expensive activated carbon filter materials, is disclosed. The process comprises size reducing Leonardite coal material to a suitable filtering effective size, and thereafter heating the size reduced Leonardite preferably to at least 750.degree. C. in the presence of a flow of an inert gas.

Knudson, Curtis L. (Grand Forks, ND)

1993-01-01T23:59:59.000Z

294

Feasibility study of an AFBC power plant at Mae Moh. Final report. Export trade information  

SciTech Connect (OSTI)

The Mae Moh AFBC Feasibility Study investigates the addition of a lignite fueled Atmospheric Fluidized Bed Combustion (AFBC) power generating plant to the Mae Moh complex. The study finds the AFBC plant to be technically feasible, environmentally acceptable, and economically attractive.

Not Available

1992-02-01T23:59:59.000Z

295

Carbon Mineralization: From Natural Analogues to Engineered Systems  

Science Journals Connector (OSTI)

...capacity of post-combustion capture of CO2 using...processing of feedstock, chemical additives, and...Aquatic Chemistry - Chemical Equilibria and Rates...sorbent in calcium looping process. Chem Eng...ash from lignite combustion in Poland. Energy...Wilkinson KJ (1994) Chemical and biological leaching...

Ian M. Power; Anna L. Harrison; Gregory M. Dipple; Siobhan A. Wilson; Peter B. Kelemen; Michael Hitch; Gordon Southam

296

200 Years of Pb Deposition throughout the Czech Republic  

E-Print Network [OSTI]

of the most air-polluted countries in the world (3-5). Although coal mining in northern Bohemia began in the 1860s, considerable air pollution began in 1945 with use of lignite coal for energy production susceptibility determinations, wewereabletoidentifypastperiodsofelevatedPbdeposition related to local mining

Wieder, R. Kelman

297

Use of High-Calcium Fly Ash in Cement-Based Construction Materials  

E-Print Network [OSTI]

, total coal ash production in the world was estimated to be 600 million tons, of which 100 million tons with ASTM 618, coal fly ash is classified into two main categories, Class F fly ash (low-calcium) and Class coal, and Class C fly ash is generated from burning of lignite and subbituminous coals. Class F fly ash

Wisconsin-Milwaukee, University of

298

Hydrogen from Coal in a Single Step  

Science Journals Connector (OSTI)

The CO2 generated, a greenhouse gas with a potential to contribute to global warming, is generally released to the atmosphere. ... The H2/CH4 ratio in the product gases from three different rank coals Datong coal (bituminous), Taiheiyo coal (sub-bituminous), Wyoming coal (lignite) followed the order Datong>Taiheiyo>Wyoming. ...

Kanchan Mondal; Krzystof Piotrowski; Debalina Dasgupta; Edwin Hippo; Tomasz Wiltowski

2005-06-11T23:59:59.000Z

299

Coal in the United States: A Status Report  

Science Journals Connector (OSTI)

...coal and lignite production, selected years...1981.(33). Production Year (thousands...192 1972 595,386 1973 591,000 1974 603...percent of total coal production (3). During the...years-from 15.6 tons per man-day in 1969 to a low...

Harry Perry

1983-10-28T23:59:59.000Z

300

Carnegie Mellon University A Technical and Economic Assessment of  

E-Print Network [OSTI]

develops a general modeling framework to provide tools for assessing gasification-based energy conversion systems with various CO2 capture options on a systematic and consistent basis. Many factors influence other factors). For low rank coals (sub-bituminous and lignite) costs increased significantly relative

Note: This page contains sample records for the topic "bitu subbitu lignite" 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

Gordon Research Conferences  

Science Journals Connector (OSTI)

...lignites"; F. X. McGarvey, "Recovery of uranium from alkaline and neutral chloride-con-taining...excre-tion of magnesium in potassium-depleted rats and in such rats treated with miner-alocorticoids...on macrophage functions." Ani-mal health-toxicology interface (J. Douglas...

Alexander M. Cruickshank

1979-03-16T23:59:59.000Z

302

European Customs & Trade Welcome to the twenty-first  

E-Print Network [OSTI]

duties system. The Coal Tax will be levied on coal, cokes and lignite. It is envisaged that the duty rate on Coal in the Netherlands · East African Community (EAC) Partner States Sign Interim Framework Agreement on Coal in the Netherlands From January 1, 2008, the present Dutch Fuel Tax on coal will no longer apply

303

Sorption of the monoterpenes ?-pinene and limonene to carbonaceous geosorbents including biochar  

Science Journals Connector (OSTI)

Abstract The sorption of two monoterpenes, ? pinene and limonene to the carbonaceous geosorbents graphite, bituminous coal, lignite coke, biochar and Pahokee peat was quantified. Polyethylene (PE) passive samplers were calibrated for the first time for these compounds by determining the PE-water partitioning coefficients and used as a tool to determine sorption to the carbonaceous geosorbents. Log KPE-water values were 3.49 ± 0.58 for ? pinene and 4.08 ± 0.27 for limonene. The sorption of limonene to all materials was stronger than that for ? pinene (differences of 0.2–1.3 log units between distribution coefficients for the monoterpenes). Placing Kd values in increasing order for ? pinene gave biochar ? Pahokee peat ? bituminous coal ? lignite coke < graphite. For limonene the order was: Pahokee peat ? biochar ? bituminous coal < graphite ? lignite coke. Micropore (defined as pores <1.5 nm) and nanopore surface area (defined as pores 1.5 nm to 50 nm) normalised carbonaceous geosorbent-water distribution coefficients were also calculated. There was no clear correlation of these distribution coefficients with SA. Elemental composition was used to assess the degree of condensation (or alteration) of the carbonaceous geosorbents. The degree of carbonisation increased in the order; Pahokee peat < lignite coke < bituminous coal < biochar < graphite, however this was not correlated with an increase in the experimental distribution coefficients.

Sarah E. Hale; Satoshi Endo; Hans Peter H. Arp; Andrew R. Zimmerman; Gerard Cornelissen

2015-01-01T23:59:59.000Z

304

A cost-effective, environmentally-responsive ground-water monitoring procedure  

E-Print Network [OSTI]

allows the optimization loop to modify the system for greater efficiency. The value of this procedure was tested at selected sites in the Gibbons Creek Lignite Mine in Grimes County, Texas. The mine, which is currently in compliance with state regulations...

Doucette, Richard Charles

1994-01-01T23:59:59.000Z

305

Colony Organization in the Green Alga Botryococcus braunii (Race B) Is Specified by a Complex Extracellular Matrix  

Science Journals Connector (OSTI)

...suggests that their hydrocarbon products once contributed to these reserves (1, 2, 8, 10, 16, 17, 34, 36, 52, 62, 63, 69...1955. Occurrence of the oil-forming alga Botryococcus in lignites and other Tertiary sediments. Micropaleontology 1 :343-348...

Taylor L. Weiss; Robyn Roth; Carrie Goodson; Stanislav Vitha; Ian Black; Parastoo Azadi; Jannette Rusch; Andreas Holzenburg; Timothy P. Devarenne; Ursula Goodenough

2012-08-31T23:59:59.000Z

306

Increasing Electricity Trading and Environmental Sustainability in the  

E-Print Network [OSTI]

-2016) ­Phase III: Negotiation and implementation of markets for trading energy and reserves GPRI MMAK and reserves ­Determines optimal long-term investment pattern for generation and transmission ­Will facilitate) · KEK (generation) · ERO (regulatory office) · Lignite mine/mine mouth generating facility · Funded

Ginzel, Matthew

307

Coal is a combustible sedimentary rock and a valuable economic resource. During the Pennsylvanian Period  

E-Print Network [OSTI]

tons in reserve. These reserves could last another 585 years at the current rate of production://IGS.indiana.edu Analyzing the Past to Provide for the Future Ro (%) Coal Rank 0.25 0.38 peat lignite subbituminous high

Polly, David

308

Hydrogeological aspects of fault zones on various scales in the Roer Valley Rift System  

E-Print Network [OSTI]

at the location of the fault zone. Finally, on a regional scale, hydraulic head patterns around the lignite mining to regional groundwater flow patterns. D 2003 Elsevier Science B.V. All rights reserved. Keywords: Faults B.V. All rights reserved. doi:10.1016/S0375-6742(03)00031-1 * Corresponding author. Fax: +31

Bense, Victor

309

The fate of char-N at pulverized coal conditions Jennifer P. Spinti*, David W. Pershing  

E-Print Network [OSTI]

-free oxidant was 50­60% for lignites and 40­50% for bituminous coals. In char flames doped with NOx The Combustion Institute. All rights reserved. Keywords: Pulverized coal combustion; Char nitrogen; NOx formation The Combustion Institute. All rights reserved. doi:10.1016/S0010-2180(03)00168-8 #12;the temperature

Utah, University of

310

The Key Coal Producers ONLINE SUPPORTING MATERIALS to  

E-Print Network [OSTI]

, Shaanxi and Shanxi together accounted for 83 percent of China's proven coal reserves in 2000, and Shanxi is not considered reserves [8]. Of China's forecasted coal reserves, a broader category than proven reserves, only January 13, 2011 #12;shown in Figures 1 and 2. The production data for anthracite, bituminous and lignite

Patzek, Tadeusz W.

311

National Assembly of the Republic of Slovenia Subiceva ulica 4  

E-Print Network [OSTI]

of the Republic of Slovenia, Your leadership is needed on a matter concerning plans for a new lignite-fired power, which is used in ways that prohibit practical CO2 capture, has reserves sufficient to take global climate to the danger zone. Coal, with larger reserves, has the potential to destroy life on our planet

Hansen, James E.

312

Productivity change of coal-fired thermal power plants in India: a Malmquist index approach  

Science Journals Connector (OSTI)

......coal are taken into consideration and power plants which use lignite as primary fuel are excluded from the study. Power plants...REDDY, Y. V. (2006) Importance of productivity in India. Reserve Bank India Bulletin, 6572. REVIEW OF PERFORMANCE OF THERMAL......

S. K. Behera; J. A. Farooquie; A. P. Dash

2011-10-01T23:59:59.000Z

313

Man's Use of Energy  

Science Journals Connector (OSTI)

... been raised to nearly 80 per cent. In countries that are fortunate enough to possess reserves of natural gas?the ideal fuel?high -pressure mains have been built to carry ... basis this demand is met by food from agriculture 21 per cent, by coal and lignite 41 per cent, by wood 6 per cent, by oil 24-5 per cent ...

HAROLD HARTLEY

1950-09-02T23:59:59.000Z

314

The British Association at Newcastle  

Science Journals Connector (OSTI)

... and widely prevalent coal-making conditions. For I find that of the actual and probable reserves of coal in the world, according to our present state of knowledge, about 43 ... of which is of Carboniferous age; while there are about 3 million million tons of lignites and sub-bituminous coals, mostly of Cretaceous and Tertiary age.

W. S. BOULTON

1916-10-05T23:59:59.000Z

315

Renewable Energy in India: Status and future Potential  

E-Print Network [OSTI]

;India - Fossil Fuel reserves Fuel Reserves Prodn 2003-4 R/P ratio Coal +Lignite (Million Tonnes) 34000- Supply Fossil fuel Reserves Emissions #2 Access to Rural Poor ­ Equity/Affordability #3 Attractive consumption pattern predominantly -fossil fuel Supply unable to meet demand Limited fossil reserves Adverse

Banerjee, Rangan

316

The prediction of heating energy consumption in a model house by using artificial neural networks in Denizli-Turkey  

Science Journals Connector (OSTI)

Turkey does not have petrol and natural gas reserves on a large scale. National energy resources are lignite and hydropower. Together with increasing environmental problems and diminishing fossil resources, studies focusing on energy reduction as well ... Keywords: Artificial neural network, Degree-hour method, Energy consumption, Heating

Ö. Altan Dombayc?

2010-02-01T23:59:59.000Z

317

Germany's Effort to Obtain Nitrogenous Compounds  

Science Journals Connector (OSTI)

... and no attempt was made to conceal them. The German Ammonium Sulphate Syndicate had a reserve of 43,000 tons, and on the declaration of war there was probably a ... of Birkeland and Eyde) at Muhlenstein, in Saxony, in the neighbourhood of the. lignite beds, which form the source of energy, and this has an annual output of ...

E. H.

1917-03-08T23:59:59.000Z

318

Physica A 259 (1998) 19 Growth properties of Eden model  

E-Print Network [OSTI]

changes to hold a self-similar surface. c 1998 Elsevier Science B.V. All rights reserved. 1. Introduction Elsevier Science B.V. All rights reserved. PII: S 0378-4371(98)00119-8 #12;2 S. Miyazima et al. / Physica which is found in experiments of sedimentary sandstones [16,17], lignite coals [18], colloidal silicate

Stanley, H. Eugene

319

The Geological Survey of the United States  

Science Journals Connector (OSTI)

... The volume is well illustrated with views and diagrams. Part v. is on "Forest Reserves,"and has excellent maps, views of scenery and woodland, and notes on soils ... the slate series, but elsewhere in placer deposits. The coal is a low-grade lignite.

1901-12-26T23:59:59.000Z

320

This article appeared in a journal published by Elsevier. The attached copy is furnished to the author for internal non-commercial research  

E-Print Network [OSTI]

performance of the SiO2­TiO2 nanocomposite. © 2007 Elsevier B.V. All rights reserved. Keywords: Mercury Flue ) is the dominant species present in flue gas when burning low rank (subbituminous or lignite) coals. However

Li, Ying

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


321

Research Items  

Science Journals Connector (OSTI)

... enzymes present in the gut are an amylase, a protease, and a lipase. The reserve materials are stored in the body as fat and glycogen; the latter occurs in ... -dahl. Coal obviously arises from plants, and the different types of plants responsible for lignite and coal respectively can, to a considerable extent, still be recognised by the microscope ...

1930-11-29T23:59:59.000Z

322

Renewables for the Power Rangan Banerjee  

E-Print Network [OSTI]

Reserves Prodn 2003-4 R/P ratio Coal +Lignite (Million Tonnes) 34000 414 ~83 (P) 140 P+I Oil (Million gas 9.1% Wind 0.2% Nuclear 1.8% Data Source Plg Comm IEPC, 2006 #12;India - Fossil Fuel reserves Fuel consumption pattern predominantly -fossil fuel Supply unable to meet demand Limited fossil reserves Adverse

Banerjee, Rangan

323

Washington Briefs  

Science Journals Connector (OSTI)

An assured and abundant source of fuel will be available when needed to supply synthetic fuel plants, according to a recent appraisal made by the U. S. Geological Survey of coal reserves in Montana. More than 28 billion tons of lignite and sub-bituminous ...

1949-09-12T23:59:59.000Z

324

The British Association for The Advancement of Science  

Science Journals Connector (OSTI)

... signs pointing in the direction of dynamical science? I desire here to speak with all reserve and even hesitation, being conscious that I am no longer on familiar ground. Still ... bottom as it became shallower or was drying up, and gave rise to beds of lignite similar to those described by the Duke of Argyll as occurring at intervals amongst the ...

1874-08-20T23:59:59.000Z

325

Notes  

Science Journals Connector (OSTI)

... of Mount Everest (29,141 ft.) the climber would probably be near his last reserves in the way of acclimatisation and strength, but that he could accomplish the feat ... in Spitsbergen. The coal, although of Tertiary origin, is of good steam quality. Lignite has been known in Iceland for some time, but so far has had no ...

1917-01-25T23:59:59.000Z

326

Radioactivity of coals and ashes from Çatalazi coal-fired power plant in Turkey  

Science Journals Connector (OSTI)

......research-article Notes Radioactivity of coals and ashes from catalagzi coal-fired...radioactivity contents in feed coals from lignite-fired power plants...Geological Survey of Canada, Economic Geology Report. 14 Aytekin...influence of an underground coal mine in Zonguldak basin, Turkey......

Hüseyin Aytekin; Ridvan Baldik

2012-04-01T23:59:59.000Z

327

Geographical Coincidence of High Heat Flow, High Seismicity, and Upwelling, with Hydrocarbon Deposits, Phosphorites, Evaporites, and Uranium Ores  

Science Journals Connector (OSTI)

...sea and seismicity and geothermal heat flux. We suggest...upwelling caused by the geothermal heat (2), which brings...sedimentary rocks. High geothermal heat fluxes correlate...Lawrence River, as well as a fourth line along...Arizona, Montana, New Mexico, and Utah. Lignites...

L. M. Libby; W. F. Libby

1974-01-01T23:59:59.000Z

328

Two plants to put ‘clean coal' to test  

Science Journals Connector (OSTI)

... — to oil company Cenovus Energy of Calgary, Canada, which will pipe the compressed gas deep underground to flush out stubborn oil reserves. The project — meant to launch ... Atlanta, Georgia. That plant, which will turn the low-grade coal lignite into burnable gases, is designed to capture 3.5 million tonnes of CO2 each year, or about ...

Richard Van Noorden

2014-04-29T23:59:59.000Z

329

U.S. Energy Information Administration | Annual Energy Outlook 2011  

Gasoline and Diesel Fuel Update (EIA)

1 1 Regional maps Figure F6. Coal supply regions Figure F6. Coal Supply Regions WA ID OR CA NV UT TX OK AR MO LA MS AL GA FL TN SC NC KY VA WV WY CO SD ND MI MN WI IL IN OH MD PA NJ DE CT MA NH VT NY ME RI MT NE IA KS MI AZ NM 500 0 SCALE IN MILES APPALACHIA Northern Appalachia Central Appalachia Southern Appalachia INTERIOR NORTHERN GREAT PLAINS Eastern Interior Western Interior Gulf Lignite Dakota Lignite Western Montana Wyoming, Northern Powder River Basin Wyoming, Southern Powder River Basin Western Wyoming OTHER WEST Rocky Mountain Southwest Northwest KY AK 1000 0 SCALE IN MILES Source: U.S. Energy Information Administration, Office

330

Prog054  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

PILOT-SCALE TESTING OF POTENTIAL MERCURY PILOT-SCALE TESTING OF POTENTIAL MERCURY CONTROL TECHNOLOGIES FOR TXU Description Objective This project is intended to identify and evaluate potential mercury control technologies at the pilot scale which show promise for application at plants burning Gulf Coast lignite or a blend with subbituminous coal. Gulf Coast lignite is one of the most challenging coals in regard to mercury control because of its high mercury concentration and the high percentage of elemental mercury. Background Of all the mercury control options available to be deployed to meet pending mercury control regulations, activated carbon injection (ACI) is considered to be among the most mature and, therefore, most readily available for commercial use in coal-fired power plants. However, very small amounts of carbon (generally

331

FE Press Releases and Techlines | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

November 4, 2010 November 4, 2010 DOE-Sponsored Field Test Finds Potential for Permanent Storage of CO2 in Lignite Seams A field test sponsored by the U.S. Department of Energy has demonstrated that opportunities to permanently store carbon in unmineable seams of lignite may be more widespread than previously documented. November 2, 2010 Innovative Telemetry System Will Help Tap Hard-to-Reach Natural Gas Resources The commercialization of an innovative telemetry communications system developed through a U.S. Department of Energy research program will help U.S. producers tap previously hard-to-reach natural gas resources deep underground, resulting in access to additional supplies that will help enhance national energy security. October 13, 2010 National Lab Celebrates a Century of Science

332

Monthly Flash Estimates of Electric Power Data  

Gasoline and Diesel Fuel Update (EIA)

Burn Non-Lignite Coal Burn Non-Lignite Coal Page 7 8. Month-to-Month Comparisons: Electric Power Retail Sales and Average Prices Page 8 9. Retail Sales Trends Page 9 10. Average Retail Price Trends Page 10 11. Heating and Cooling Degree Days Page 11 12. Documentation Page 12 Monthly Flash Estimates of Data for: October 2010 Section 1. Commentary Electric Power Data In October 2010, the contiguous United States experienced temperatures that were above average. Accordingly, the total population-weighted heating degree days for the United States were 15.6 percent below the October normal. Retail sales of electricity remained relatively unchanged from October 2009. Over the same period, the average U.S. retail price of electricity increased 1.8 percent. For the 12-month period ending October 2010, the average U.S.

333

FE Carbon Capture and Storage News | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

March 17, 2009 March 17, 2009 DOE Releases Report on Techniques to Ensure Safe, Effective Geologic Carbon Sequestration The Office of Fossil Energy's National Energy Technology Laboratory has created a comprehensive new document that examines existing and emerging techniques to monitor, verify, and account for carbon dioxide stored in geologic formations. March 10, 2009 DOE Regional Partnership Initiates CO2 Injection in Lignite Coal Seam A U.S. Department of Energy/National Energy Technology Laboratory team of regional partners has begun injecting CO2 into a deep lignite coal seam in Burke County, North Dakota, to demonstrate the economic and environmental viability of geologic CO2 storage in the U.S. Great Plains region. February 27, 2009 DOE Partner Begins Injecting 50,000 Tons of CO2 in Michigan Basin

334

Microsoft Word - 41763 FINAL _NETL Comments_11AUG2010_NS.doc  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

LIGNITE FUEL ENHANCEMENT LIGNITE FUEL ENHANCEMENT Final Technical Report Reporting Period: July 9, 2004 to March 31, 2010 DOE Award Number: DE-FC26-04NT41763 Date Report Issued: June 29, 2010 Report Submitted by: Great River Energy Authors: Charles W. Bullinger, PE Dr. Nenad Sarunac Senior Principle Engineer Principle Research Engineer Great River Energy Energy Research Center 1611 E. Century Avenue 117 ATLSS Drive, Imbt Labs Bismarck, ND 58503 Lehigh University Bethlehem, PA 18015 © 2010 Great River Energy. All Rights Reserved. This copyrighted data was produced in the performance of U.S. Department of Energy cooperative agreement no. DE-FC26-04NT41763. The copyright owner has granted to the Government, and others acting on its behalf, a paid-up nonexclusive, irrevocable worldwide

335

NETL: Mercury Emissions Control Technologies - University of North Dakota,  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Table Of Contents for Field Testing Enhancing Carbon Reactivity in Mercury Control in Lignite-Fired Systems Mercury Oxidation Upstream of an ESP and Wet FGD Enhancing Carbon Reactivity in Mercury Control in Lignite-Fired Systems The scope of the project consists of attempting to control mercury at four different power plants using two novel concepts. The first concept is using furnace additives that will enhance the sorbent effectiveness for mercury capture. The other concept involves using novel treated carbons to significantly increase sorbent reactivity and resultant capture of Hg. The furnace additives will be tested at Leland Olds Station and Antelope Valley Station while the novel sorbents will be tested at Stanton Station Units 1 &10. Related Papers and Publications:

336

Alaska Coal Geology: GIS Data | OpenEI  

Open Energy Info (EERE)

Coal Geology: GIS Data Coal Geology: GIS Data Dataset Summary Description Estimated Alaska coal resources are largely in Cretaceous and Tertiary rocks distributed in three major provinces. Northern Alaska-Slope, Central Alaska-Nenana, and Southern Alaska-Cook Inlet. Cretaceous resources, predominantly bituminous coal and lignite, are in the Northern Alaska-Slope coal province. Most of the Tertiary resources, mainly lignite to subbituminous coal with minor amounts of bituminous and semianthracite coals, are in the other two provinces. The combined measured, indicated, inferred, and hypothetical coal resources in the three areas are estimated to be 5,526 billion short tons (5,012 billion metric tons), which constitutes about 87 percent of Alaska's coal and surpasses the total coal resources of the conterminous United States by 40 percent. Available here: GIS shapefiles of relevant faults and geology, associated with the following report: http://pubs.usgs.gov/dds/dds-077/pdf/DDS-77.pdf

337

Definition: Bituminous coal | Open Energy Information  

Open Energy Info (EERE)

Bituminous coal Bituminous coal Jump to: navigation, search Dictionary.png Bituminous coal A dense coal, usually black, sometimes dark brown, often with well-defined bands of bright and dull material, used primarily as fuel in steam-electric power generation, with substantial quantities also used for heat and power applications in manufacturing and to make coke; contains 45-86% carbon.[1][2] View on Wikipedia Wikipedia Definition Bituminous coal or black coal is a relatively soft coal containing a tarlike substance called bitumen. It is of higher quality than lignite coal but of poorer quality than anthracite. Formation is usually the result of high pressure being exerted on lignite. Its composition can be black and sometimes dark brown; often there are well-defined bands of bright and dull

338

NETL: C&CBTL - Development of Kinetics and Mathematical Models for High  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Kinetics and Mathematical Models for High Pressure Gasification of Lignite-Switchgrass Blends Kinetics and Mathematical Models for High Pressure Gasification of Lignite-Switchgrass Blends Georgia Tech Research Corporation Project Number: FE0005339 Project Description The objectives of the proposed study are to obtain experimental reactor data and develop kinetic rate expressions for pyrolysis and char gasification for the coal-biomass blends under conditions free from transport limitations, to develop a detailed understanding of the effect of pyrolysis conditions on the porous char structure, to build mathematical models that combine true kinetic rate expressions with transport models for predicting gasification behavior for a broad range of pressures and temperatures, and to investigate the physical and chemical parameters that might lead to synergistic effects in coal-biomass blends gasification.

339

Microsoft PowerPoint - ACC032503_V2_1.PPT  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

American Coal Council American Coal Council Mercury & Multi- Emissions Compliance: Strategies & Tactics March 26-27, 2003 Charlotte, NC Thomas J. Feeley, III National Energy Technology Laboratory TJF_ACC_March2003 Presentation Outline * Regulatory drivers * Program objectives * Current program * Future plans TJF_ACC_March2003 Power Plant Mercury Emissions Coal Plants Emit ~ 48 tons/year NETL Boiler Database 0 2 4 6 8 10 0 10 20 30 Lignite SubB Bituminous Lignite SubB Bituminous Total US Hg Emissions (tons per year) 0 10 20 30 0 2 4 6 8 10 Hg Emission Rate (lb per TBtu) TJF_ACC_March2003 Potential Mercury Regulations MACT Standards * Likely high levels of Hg reduction * Compliance: Dec. 2007 Clean Power Act of 2003 * Re-introduced in Senate (S.

340

The energy situation in the Asian-Pacific region and international cooperation  

SciTech Connect (OSTI)

After the second oil crisis (1979-80), the developing countries in the Asian-Pacific region adopted two major energy policies: conservation and the introduction and stimulation of alternative sources of energy to oil. Energy conservation was successfully achieved only in the newly industrialized countries, including Korea, Taiwan, and Singapore; the potential for conservation was very limited in other less-developed countries. In order to promote energy conservation, many countries adopted a policy of higher prices for particular petroleum products. The results of the push to introduce or expand nonoil alternative sources of energy have been quite encouraging. Excellent examples are the development of natural gas in Thailand, Malaysia, and Indonesia; of coal and lignite in Indonesia; and of lignite in Thailand. Energy management and the expansion of domestic energy resources in the developing countries will require not only imported technology but the upgrading of indigenous human resources to guarantee long-term and successful development.

Sakakibara, S.

1983-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "bitu subbitu lignite" 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

Turkey's energy demand and supply  

SciTech Connect (OSTI)

The aim of the present article is to investigate Turkey's energy demand and the contribution of domestic energy sources to energy consumption. Turkey, the 17th largest economy in the world, is an emerging country with a buoyant economy challenged by a growing demand for energy. Turkey's energy consumption has grown and will continue to grow along with its economy. Turkey's energy consumption is high, but its domestic primary energy sources are oil and natural gas reserves and their production is low. Total primary energy production met about 27% of the total primary energy demand in 2005. Oil has the biggest share in total primary energy consumption. Lignite has the biggest share in Turkey's primary energy production at 45%. Domestic production should be to be nearly doubled by 2010, mainly in coal (lignite), which, at present, accounts for almost half of the total energy production. The hydropower should also increase two-fold over the same period.

Balat, M. [Sila Science, Trabzon (Turkey)

2009-07-01T23:59:59.000Z

342

Progress in two major CCPI projects  

SciTech Connect (OSTI)

Two projects under the US Department of Energy (DOE) sponsored Clean Coal Power initiative have made significant progress in demonstrating new technologies to remove mercury from coal and enhance use of low-Btu lignite coals while increasing energy efficiency. The Wisconsin Electricity Power Company is demonstrating the TOXECON{trademark} mercury control process at its Presque Isle Power Plant near Marquette, Michigan, while Great River Energy (GRE) is showing the viability of lignite fuel enhancement at its Coal Creek Station in Underwood, North Dakota. Both projects were awarded in 2004 under Round I of the Clean Coal Power Initiative. Elsewhere in the program, six projects are in various phases of planning or operation. Plans for a third round under the CCPI were announced on May 23, 2007. 2 figs.

NONE

2007-07-01T23:59:59.000Z

343

Coal to methanol to gasoline by the hydrocarb process  

SciTech Connect (OSTI)

The HYDROCARB Process converts coal or any other carbonaceous material to a clean carbon fuel and co-product gas or liquid fuel. By directing the co-product to liquid methanol, it becomes possible to produce methanol at costs as low as $0.13 to $0.14/gal as shown in Table 1 for a Western Lignite and Table 2 for an Eastern Bituminous coal. In the case of Western lignite, it is assumed that the carbon black fuel product can be sold at $3.00/MMBtu ($18/Bbl FOE) and for the Eastern coal at $2.50/MMBtu ($15/Bbl FOE). A methanol market is expected to develop due to the need for an automotive fuel with reduced pollutant emissions. However, should the methanol market not materialize as expected, then methanol can be readily converted to conventional gasoline by the addition of an MTG, methanol to gasoline process step. 1 fig., 3 tabs.

Steinberg, M.

1989-08-01T23:59:59.000Z

344

Development of biological coal gasification (MicGas process): 12th Quarterly report  

SciTech Connect (OSTI)

Several experiments were conducted to study the efficiency of granulated sludge consortium (GSC) on the biomethanation of Texas lignite (TxL). With an aim of obtaining a better culture than Mic-1, GSC was used as inoculum at different concentrations. The first experiment was conducted under anaerobic conditions in 60-mL vials containing 40 mL 0.01% SNTM + 1% TxL + 10% GSC. Methane production was measured periodically in the vial headspace and after 20 days of incubation, methane was found to be up to 67 mole%. The second experiment was conducted to determine whether methane production was from biogasification of coal or from substrates used for growing the GSC. The effect of two different anaerobic conditions on biomethanation of Texas lignite was also studied.

Not Available

1993-07-29T23:59:59.000Z

345

Depositional environment of downdip Yegua (Eocene) sandstones, Jackson County, Texas  

E-Print Network [OSTI]

fringing the lignite-bearing delta plain facies. Fisher (1969) also found that along strike of the Yegua delta system into the lower Texas Gulf Coast area is an extensive strandplain-barrier bar system. The sands of this system were derived from both..., contrary to Fisher (1969), that the lower Texas Gulf Coast during Yegua time was dominated by deltaic processes rather than strandplain/barrier bar processes. Scott (1987) concludes that the mapping of individual thin units, rather than gross intervals...

Whitten, Christopher James

2012-06-07T23:59:59.000Z

346

Steam–Coal Gasification Using CaO and KOH for in Situ Carbon and Sulfur Capture  

Science Journals Connector (OSTI)

These two coals represent the two main types of non-lignite coals currently used in the U.S.: a medium-sulfur eastern bituminous coal and a low-sulfur western sub-bituminous coal. ... At a commercial scale, this would likely mean that there could be a roughly 3-fold decrease in the size of the gasifier compared to the case of dry mixing coal and the regenerated calcium oxide. ...

Nicholas S. Siefert; Dushyant Shekhawat; Shawn Litster; David A. Berry

2013-03-03T23:59:59.000Z

347

Luminant's Big Brown Plant wins for continuous improvement and safety programs  

SciTech Connect (OSTI)

Staff from Luminant's Big Brown Plant accepted the PRB Coal Users' Group's top honour for innovative improvements to coal-handling systems and a sterling safety record. The numbers reveal their accomplishments: an average EFOR less than 4%, an availability factor averaging 90% for a plant that burns a lignite/PRB mix, and staff who worked more than 2.6 million man-hours since March 2000 without a lost-time injury. 13 photos., 1 tab.

Peltier, R.

2008-07-15T23:59:59.000Z

348

Economic evaluation of losses to electric power utilities caused by ash fouling. Final technical report, November 1, 1979-April 30, 1980  

SciTech Connect (OSTI)

Problems with convection ash fouling and wall slagging were considerable during our study. The Dakota lignites posed the greatest problems, particularly with fouling. The subbituminous coals had considerable problems, related mostly with wall slagging. The Texas lignites had few problems, and those were only associated with wall slagging. The generation losses were as follows: The Dakota lignite burning stations averaged an overall availability of 87.13%. Convection fouling outages were responsible for 57.75% of this outage time for a decrease in availability of 7.43%. Fouling was responsible for curtailment losses of 317,649 Mwh or 8.25% of the remaining available generation. Slagging was responsible for losses of 2732 megawatt hours or .07% of the remaining available generation. Total ash related losses amounted to 16.08% of the total available generation. The subbituminous burning stations averaged an overall availability of 78.36%. Total ash related losses amounted to 1.54% of the total available generation. The Texas lignite burning stations averaged an overall availability of 80.63%. No ash related outage losses occurred. Slagging curtailments accounted 0.08% of the total available generation. Costs due to ash fouling and slagging related curtailments are a tremendous sum. Seven power stations were studied for a six month period to assess costs. The total cost directly attributable to ash slagging and fouling condition was $20,638,113. Recommendations for reducing the problems involve soot blowers, control of furnace gas exit temperature, water blowers and more conservative boiler design.

Burkhardt, F.R.; Persnger, M.M.

1980-01-01T23:59:59.000Z

349

Muffle furnace evaluation of FGD sludge-coal-clay mixtures as potential synthetic aggregates  

E-Print Network [OSTI]

reserve locations as they are utilized for housing and industrial requirements of land (8) . Space that was once available for aggregate mining, handling and storage is becoming more and more limited. Lastly and perhaps more important, synthetic...), High-lime fl, y ashes (those resulting from the combustion of lignite or other subbi tuminous coals) may contain up to 30 percent calcium oxide. Total alkalies (sodium and potassium oxides) approach 5 percent. Particles may range in size from 2 x 10...

Pettit, Jesse William

2012-06-07T23:59:59.000Z

350

Remarks Concerning the Public Utility Commission of Texas Study on Bulk Power Transmission  

E-Print Network [OSTI]

diversification has enhanced both reliability and efficiency with the resources of water, natural gas, coal, lignite and uranium. Because of this diversification, ERCOT utilities can take advantage of fuel price fluctuations. Economy programs are now... utility systems so that all the units can contribute inertial stability and reserve capacity to the system when equipment failures occur. To take advantage of these reserves and provide alternate paths for power flow, excess capacity must...

Sweatman, R. T.

351

Missouri Ordnance Works Becomes Bureau ot Mines Demonstration Plant  

Science Journals Connector (OSTI)

The Bureau of Mines estimates that the United States has about 3 trillion tons of coal reserves—enough to supply the nation with both solid and liquid fuels for at least 1,000 years. ... The Bureau of Mines will take over the Missouri Ordnance Works, near Louisiana, Mo., a $17,500,000 plant that made synthetic ammonia during the war, and convert it into a demonstration plant for the production of gasoline and oil from coal and lignite. ...

1946-01-10T23:59:59.000Z

352

A field evaluation of the movement of selected metals in revegetated strip mine overburden and laboratory assessment of transport mechanisms  

E-Print Network [OSTI]

placement of materials following the excavation and sampling of lignite at a test pit. The effect of varying ratios of lime and gypsum had on revegetation were studied. Resultant overburden'pH and electrical conductivity (EC) wire evaluated... to increase as reserves are depleted and the demand for more energy production to r educe depen- dence on oil and subsequent improvement of the economi c situation is being echoed across the world. To meet these demands, alternate forms of eneroy...

Launius, Kenneth Wayne

2012-06-07T23:59:59.000Z

353

Depositional environment of the "stringer sand" member, Lower Tuscaloosa Formation (Cretaceous), Mallalieu field, Mississippi  

E-Print Network [OSTI]

day per well. The ultimate recoverable reserves are estimated to be 35, 000, 000 barrels (Mississippi Geological Society, 1957). As of December 31, 1966, the cumulative production for the field was 31, 600, 153 barrels of oil and 11, 047, 790, 000... from fine to medium grained. Some of the sandstones are carbonaceous and lignitic, and others contain limestone nodules and clay pellets. Rainwater (1962) suggests that the Dantzler is dominantly a continental deposit and changes southward...

Cook, Billy Charles

2012-06-07T23:59:59.000Z

354

Upper Cretaceous Foraminifera from southern California and northwestern Baja California, Mexico  

E-Print Network [OSTI]

of California, Berkeley, for information on ostracodes of southern California. Special gratitude is expressed to Dr. HELEN TAPPAN LOEBLICH for her continued help and guidance and to Dr. ROBERT G. DOUGLAS, Western Reserve University, Ohio, for field assistance... laminations, current-ripple lamina- tions, and an upper, thin, dark, lignitic layer. These in turn are overlain by another sandstone and the sequence is repeated. Numer- ous burrows in this member penetrate both the silty and sandy beds. Such sedimentary...

Sliter, W. V.

1968-08-16T23:59:59.000Z

355

Evaluating Mercury Concentrations in Midwest Fish in Relationship to Mercury Emission Sources  

E-Print Network [OSTI]

Given that: (1) coal use worldwide is increasing, (2) the US has abundant coal reserves (USDOE, 2007) and appears poised to embrace numerous energy sources including increased coal as a means to supplant foreign oil consumption, and (3) coal... primary types of coal (bituminous, anthracite, and lignite) all have various energy contents and mixtures of elements (World Coal Institute, 2005). In addition to the primary constituents of coal, numerous other elements exist in minute concentrations...

Robichaud, Jeffery

2008-12-19T23:59:59.000Z

356

Evaluation of vegetative cover on reclaimed land by color infrared videography relative to soil properties  

E-Print Network [OSTI]

to Soil Properties. (August 1988) Anne Augusta Pfordresher, B. A. , Case Western Reserve University, Cleveland, Ohio Chairman of Advisory Committee: Dr. L. P. Wilding Color infrared video imagery, soil samples and penetration resis- tance measurements... requires reclamation of land disturbed in the mining process. Lignite seams mined in East Texas are overlain by unconsolidated geologic sediments which, after mining, are placed into the pit from which the coal was taken. This "mixed overburden...

Pfordresher, Anne Augusta

2012-06-07T23:59:59.000Z

357

Synthesis Gas Production with an Adjustable H2/CO Ratio through the Coal Gasification Process: Effects of Coal Ranks And Methane Addition  

Science Journals Connector (OSTI)

With the decline of oil reserves and production, the gas-to-liquids (GTL) part of Fischer–Tropsch (F-T) synthesis technology has become increasing important. ... The Department of Energy (DOE) Energy Information Administration (EIA) estimates that over 50% of the coal reserve base in the United States (U.S.) is bituminous coal, about 30% is sub-bituminous, and 9% is lignite. ...

Yan Cao; Zhengyang Gao; Jing Jin; Hongchang Zhou; Marten Cohron; Houying Zhao; Hongying Liu; Weiping Pan

2008-03-25T23:59:59.000Z

358

Energy Research, Development and Demonstration  

E-Print Network [OSTI]

it was observed need for state energy development activities recognized in Tex;lf, that domestic petroleum and natural resulted in the introduction of legislation for I"it he gas reserves and production were declining and that the creation of an energy... available as indicated in the publication list appended to this paper. ANALYSIS OF 1978-79 EDF FUNDING AREA NO. OF PROJECTS EDF FUNDS GENERATED HATCHING FUNDS TOTAL RD&D INVESTMENT Basic EDF Proj ects: Lignite Geotherma 1 Conservation...

Ray, R. R., Jr.

1980-01-01T23:59:59.000Z

359

Large Field Erected and Packaged High Temperature Water (HTW) Generators for Coal Firing  

E-Print Network [OSTI]

and closer temperature control. The heat storage capacity of water per cubic foot is considerably greater than steam at equivalent saturation pressures, as shown in Table No. II (below). This inherent reserve or "fly wheel" effect permits closer... furnace and convection section. Coal ash fouling characteristics will have a bearing on the convection section tube spacing. Low grade coals should be reviewed for their slagging and fouling characteristics. For example, lignite and low grade coals...

Boushell, C. C.

1980-01-01T23:59:59.000Z

360

SAS Output  

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

1. Average Sales Price of Coal by State and Coal Rank, 2012" 1. Average Sales Price of Coal by State and Coal Rank, 2012" "(dollars per short ton)" "Coal-Producing State","Bituminous","Subbituminous","Lignite","Anthracite","Total" "Alabama",106.57,"-","-","-",106.57 "Alaska","-","w","-","-","w" "Arizona","w","-","-","-","w" "Arkansas","w","-","-","-","w" "Colorado","w","w","-","-",37.54 "Illinois",53.08,"-","-","-",53.08 "Indiana",52.01,"-","-","-",52.01

Note: This page contains sample records for the topic "bitu subbitu lignite" 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

Power Systems Development Facility Gasification Test Campaign TC16  

SciTech Connect (OSTI)

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

Southern Company Services

2004-08-24T23:59:59.000Z

362

An efficient process for recovery of fine coal from tailings of coal washing plants  

SciTech Connect (OSTI)

Gravity concentration of hard lignites using conventional jigs and heavy media separation equipment is prone to produce coal-rich fine tailings. This study aims to establish a fine coal recovery process of very high efficiency at reasonable capital investment and operational costs. The technical feasibility to upgrade the properties of the predeslimed fine refuse of a lignite washing plant with 35.9% ash content was investigated by employing gravity separation methods. The laboratory tests carried out with the combination of shaking table and Mozley multi-gravity separator (MGS) revealed that the clean coal with 18% ash content on dry basis could be obtained with 58.9% clean coal recovery by the shaking table stage and 4.1% clean coal recovery by MGS stage, totaling to the sum of 63.0% clean coal recovery from a predeslimed feed. The combustible recovery and the organic efficiency of the shaking table + MGS combination were 79.5% and 95.5%, respectively. Based on the results of the study, a flow sheet of a high-efficiency fine coal recovery process was proposed, which is also applicable to the coal refuse pond slurry of a lignite washing plant.

Cicek, T.; Cocen, I.; Engin, V.T.; Cengizler, H. [Dokuz Eylul University, Izmir (Turkey). Dept. for Mining Engineering

2008-07-01T23:59:59.000Z

363

Increasing the renewable energy sources absorption capacity of the Macedonian energy system  

Science Journals Connector (OSTI)

Macedonian energy sector is the main emitter of greenhouse gases with share of about 70% in the total annual emissions. Also 70%–75% of emissions are associated with the electricity generation due to the predominant role of the lignite fuelled power plants. Recently the government has adopted a strategy for the use of renewable energy sources (RES) which identifies a target of 21% of final energy consumption from RES by 2020. In this paper analyses are conducted in order to investigate to which extent and in which way the absorption capacity of the power system for RES electricity can be improved. For this purpose combining various conventional and RES technologies including pump storage hydro power plant and revitalisation of the existing lignite power plants six scenarios for the power system expansion are developed by making use of EnergyPLAN model. Critical excess of electricity analyses are conducted in order to identify the maximal penetration of wind electricity. The results have shown that in the exiting capacities maximal penetration of wind electricity in 2020 is 13% of total electricity consumption. The revitalization of the existing lignite power plants and building of pump storage power plant would increase the wind penetration. Furthermore the developed scenarios are comparatively assessed in terms of the associated greenhouse gases emissions and import of electricity.

2013-01-01T23:59:59.000Z

364

Advanced coal technologies in Czech heat and power systems  

SciTech Connect (OSTI)

Coal is the only domestic source of fossil fuel in the Czech Republic. The coal reserves are substantial and their share in total energy use is about 60%. Presently necessary steps in making coal utilisation more friendly towards the environment have been taken and fairly well established, and an interest to develop and build advanced coal units has been observed. One IGCC system has been put into operation, and circa 10 AFBC units are in operation or under construction. Preparatory steps have been taken in building an advanced combustion unit fuelled by pulverised coal and retrofit action is taking place in many heating plants. An actual experience has shown two basic problems: (1) Different characteristic of domestic lignite, especially high content of ash, cause problems applying well-tried foreign technologies and apparently a more focused attention shall have to be paid to the quality of coal combusted. (2) Low prices of lignite (regarding energy, lignite is four times cheaper then coal) do not oblige to increase efficiency of the standing equipment applying advanced technologies. It will be of high interest to observe the effect of the effort of the European Union to establish a kind of carbon tax. It could dramatically change the existing scene in clean coal power generation by the logical pressure to increase the efficiency of energy transformation. In like manner the gradual liberalisation of energy prices might have similar consequences and it is a warranted expectation that, up to now not the best, energy balance will improve in near future.

Noskievic, P.; Ochodek, T. [VSB-Technical Univ., Ostrava (Czechoslovakia)

1998-04-01T23:59:59.000Z

365

Novel Sorbent-Based Process for High Temperature Trace Metal Removal  

SciTech Connect (OSTI)

The objective of this project was to demonstrate the efficacy of a novel sorbent can effectively remove trace metal contaminants (Hg, As, Se and Cd) from actual coal-derived synthesis gas streams at high temperature (above the dew point of the gas). The performance of TDA's sorbent has been evaluated in several field demonstrations using synthesis gas generated by laboratory and pilot-scale coal gasifiers in a state-of-the-art test skid that houses the absorbent and all auxiliary equipment for monitoring and data logging of critical operating parameters. The test skid was originally designed to treat 10,000 SCFH gas at 250 psig and 350 C, however, because of the limited gas handling capabilities of the test sites, the capacity was downsized to 500 SCFH gas flow. As part of the test program, we carried out four demonstrations at two different sites using the synthesis gas generated by the gasification of various lignites and a bituminous coal. Two of these tests were conducted at the Power Systems Demonstration Facility (PSDF) in Wilsonville, Alabama; a Falkirk (North Dakota) lignite and a high sodium lignite (the PSDF operator Southern Company did not disclose the source of this lignite) were used as the feedstock. We also carried out two other demonstrations in collaboration with the University of North Dakota Energy Environmental Research Center (UNDEERC) using synthesis gas slipstreams generated by the gasification of Sufco (Utah) bituminous coal and Oak Hills (Texas) lignite. In the PSDF tests, we showed successful operation of the test system at the conditions of interest and showed the efficacy of sorbent in removing the mercury from synthesis gas. In Test Campaign No.1, TDA sorbent reduced Hg concentration of the synthesis gas to less than 5 {micro}g/m{sup 3} and achieved over 99% Hg removal efficiency for the entire test duration. Unfortunately, due to the relatively low concentration of the trace metals in the lignite feed and as a result of the intermittent operation of the PSDF gasifier (due to the difficulties in the handling of the low quality lignite), only a small fraction of the sorbent capacity was utilized (we measured a mercury capacity of 3.27 mg/kg, which is only a fraction of the 680 mg/kg Hg capacity measured for the same sorbent used at our bench-scale evaluations at TDA). Post reaction examination of the sorbent by chemical analysis also indicated some removal As and Se (we did not detect any significant amounts of Cd in the synthesis gas or over the sorbent). The tests at UNDEERC was more successful and showed clearly that the TDA sorbent can effectively remove Hg and other trace metals (As and Se) at high temperature. The on-line gas measurements carried out by TDA and UNDEERC separately showed that TDA sorbent can achieve greater than 95% Hg removal efficiency at 260 C ({approx}200g sorbent treated more than 15,000 SCF synthesis gas). Chemical analysis conducted following the tests also showed modest amounts of As and Se accumulation in the sorbent bed (the test durations were still short to show higher capacities to these contaminants). We also evaluated the stability of the sorbent and the fate of mercury (the most volatile and unstable of the trace metal compounds). The Synthetic Ground Water Leaching Procedure Test carried out by an independent environmental laboratory showed that the mercury will remain on the sorbent once the sorbent is disposed. Based on a preliminary engineering and cost analysis, TDA estimated the cost of mercury removal from coal-derived synthesis gas as $2,995/lb (this analysis assumes that this cost also includes the cost of removal of all other trace metal contaminants). The projected cost will result in a small increase (less than 1%) in the cost of energy.

Gokhan Alptekin

2008-09-30T23:59:59.000Z

366

Effects of low-temperature catalytic pretreatments on coal structure and reactivity in liquefaction. Final technical report, Volume 1 - effects of solvents, catalysts and temperature conditions on conversion and structural changes of low-rank coals  

SciTech Connect (OSTI)

The main objectives of this project were to study the effects of low-temperature pretreatments on coal structure and their impacts on subsequent liquefaction. The effects of pretreatment temperatures, catalyst type, coal rank, and influence of solvent were examined. Specific objectives were to identify the basic changes in coal structure induced by catalytic and thermal pretreatments, and to determine the reactivity of the catalytically and thermally treated coals for liquefaction. In the original project management plan it was indicated that six coals would be used for the study. These were to include two each of bituminous, subbituminous, and lignite rank. For convenience in executing the experimental work, two parallel efforts were conducted. The first involved the two lignites and one subbituminous coal; and the second, the two bituminous coals and the remaining subbituminous coal. This Volume presents the results of the first portion of the work, studies on two lignites and one subbituminous coal. The remaining work accomplished under this project will be described and discussed in Volume 2 of this report. The objective of this portion of the project was to determine and compare the effects of solvents, catalysts and reaction conditions on coal liquefaction. Specifically, the improvements of reaction conversion, product distribution, as well as the structural changes in the coals and coal-derived products were examined. This study targeted at promoting hydrogenation of the coal-derived radicals, generated during thermal cleavage of chemical bonds, by using a good hydrogen donor-solvent and an effective catalyst. Attempts were also made in efforts to match the formation and hydrogenation of the free radicals and thus to prevent retrogressive reaction.

Lili Huang; Schobert, H.H.; Chunshan Song

1998-01-01T23:59:59.000Z

367

The desulfurization of flue gas at the Mae Moh Power Plant Units 12 and 13  

SciTech Connect (OSTI)

As pollution of air, water and ground increasingly raises worldwide concern, the responsible national and international authorities establish and issue stringent regulations in order to maintain an acceptable air quality in the environment. In Thailand, the Electricity Generating Authority of Thailand (EGAT) takes full responsibility in environmental protection matters as well as in generating the electricity needed to supply the country`s very rapid power demand growth. Due to the rapidly increasing electricity demand of the country, EGAT had decided to install two further lignite-fired units of 300 MW each (Units 12 and 13) at the Mae Moh power generation station and they are now under construction. The arrangement and the capacity of all the power plant units are as shown. In 1989, EGAT started the work on the flue gas desulfurization system of Mae Moh power plant units 12 and 13 as planned. A study has been conducted to select the most suitable and most economical process for flue gas desulfurization. The wet scrubbing limestone process was finally selected for the two new units. Local limestone will be utilized in the process, producing a by-product of gypsum. Unfortunately, natural gypsum is found in abundance in Thailand, so the produced gypsum will be treated as landfill by mixing it with ash from the boilers of the power plants and then carrying it to the ash dumping area. The water from the waste ash water lake is utilized in the process as much as possible to minimize the requirement of service water, which is a limited resource. The Mae Moh power generation station is situated in the northern region of Thailand, 600 km north of Bangkok and about 30 km east of the town of Lampang, close to the Mae Moh lignite mine. Three lignite-fired units (Units 1-3) of 75 MW each, four units (Units 4-7) of 150 MW each and four units (Units 8-11) of 300 MW each are in operation.

Haemapun, C.

1993-12-31T23:59:59.000Z

368

Gasification of New Zealand coals: a comparative simulation study  

SciTech Connect (OSTI)

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

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

2008-07-15T23:59:59.000Z

369

SAS Output  

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

4. Receipts and Quality of Coal by Rank Delivered for Electricity Generation: 4. Receipts and Quality of Coal by Rank Delivered for Electricity Generation: Commercial Sector by State, 2012 Bituminous Subbituminous Lignite Census Division and State Receipts (Thousand Tons) Average Sulfur Percent by Weight Average Ash Percent by Weight Receipts (Thousand Tons) Average Sulfur Percent by Weight Average Ash Percent by Weight Receipts (Thousand Tons) Average Sulfur Percent by Weight Average Ash Percent by Weight New England 0 -- -- 0 -- -- 0 -- -- Connecticut 0 -- -- 0 -- -- 0 -- -- Maine 0 -- -- 0 -- -- 0 -- -- Massachusetts 0 -- -- 0 -- -- 0 -- -- New Hampshire 0 -- -- 0 -- -- 0 -- -- Rhode Island 0 -- -- 0 -- -- 0 -- -- Vermont 0 -- -- 0 -- -- 0 -- -- Middle Atlantic 0 -- -- 0 -- -- 0 -- --

370

Power Plant Optimization Demonstration Projects Cover Photos:  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

5 SEPTEMBER 2007 5 SEPTEMBER 2007 Power Plant Optimization Demonstration Projects Cover Photos: * Top left: Coal Creek Station * Top right: Big Bend Power Station * Bottom left: Baldwin Energy Complex * Bottom right: Limestone Power Plant A report on four projects conducted under separate cooperative agreements between the U.S. Department of Energy and: * Great River Energy * Tampa Electric Company * Pegasus Technologies * NeuCo. , Inc.  Power Plant Optimization Demonstration Projects Executive Summary .......................................................................................4 Background: Power Plant Optimization ......................................................5 Lignite Fuel Enhancement Project ...............................................................8

371

U.S. Department of Energy Information Bridge MARC Records System  

Office of Scientific and Technical Information (OSTI)

Subject Category Subject Category Active Subject Categories ADVANCED PROPULSION SYSTEMS APPLIED LIFE SCIENCES ASTRONOMY AND ASTROPHYSICS ATOMIC AND MOLECULAR PHYSICS BASIC BIOLOGICAL SCIENCES BIOMASS FUELS CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS COAL, LIGNITE, AND PEAT CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY DIRECT ENERGY CONVERSION ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION ENERGY PLANNING, POLICY, AND ECONOMY ENERGY STORAGE ENGINEERING ENVIRONMENTAL SCIENCES FOSSIL-FUELED POWER PLANTS GENERAL AND MISCELLANEOUS GENERAL STUDIES OF NUCLEAR REACTORS GEOSCIENCES GEOTHERMAL ENERGY HYDRO ENERGY HYDROGEN INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY ISOTOPE AND RADIATION SOURCES KNOWLEDGE MANAGEMENT AND PRESERVATION

372

Slide03 | OSTI, US Dept of Energy, Office of Scientific and Technical  

Office of Scientific and Technical Information (OSTI)

Slide03 Slide03 Slide03 Slide 3: DOE's Scientific Disciplines From A to Z (well, W) ADVANCED PROPULSION SYSTEMS APPLIED LIFE SCIENCES ASTRONOMY AND ASTROPHYSICS ATOMIC AND MOLECULAR PHYSICS BASIC BIOLOGICAL SCIENCES BIOMASS FUELS CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS COAL, LIGNITE, AND PEAT CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY DIRECT ENERGY CONVERSION EFFECTS OF RADIATION AND OTHER POLLUTANTS ON BIOLOGICAL MATERIALS AND ORGANISMS ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION ENERGY PLANNING, POLICY, AND ECONOMY ENERGY STORAGE ENGINEERING ENVIRONMENTAL SCIENCES FOSSIL-FUELED POWER PLANTS GENERAL STUDIES OF NUCLEAR REACTORS GEOSCIENCES GEOTHERMAL ENERGY HYDRO ENERGY HYDROGEN INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY INSTRUMENTATION

373

Process to improve boiler operation by supplemental firing with thermally beneficiated low rank coal  

DOE Patents [OSTI]

The invention described is a process for improving the performance of a commercial coal or lignite fired boiler system by supplementing its normal coal supply with a controlled quantity of thermally beneficiated low rank coal, (TBLRC). This supplemental TBLRC can be delivered either to the solid fuel mill (pulverizer) or directly to the coal burner feed pipe. Specific benefits are supplied based on knowledge of equipment types that may be employed on a commercial scale to complete the process. The thermally beneficiated low rank coal can be delivered along with regular coal or intermittently with regular coal as the needs require.

Sheldon, Ray W. (Huntley, MT)

2001-01-01T23:59:59.000Z

374

Argonne Coal Structure Rearrangement Caused by Sorption of CO2  

Science Journals Connector (OSTI)

Argonne Coal Structure Rearrangement Caused by Sorption of CO2 ... The sorption of CO2 on seven Argonne premium coals was measured by using attenuated total reflectance-Fourier transform infrared (ATR-FTIR) spectroscopy as a function of time at constant CO2 pressure (0.62 MPa) and temperature (55 °C). ... The following seven Argonne premium coals were investigated:? Upper Freeport (medium volatile bituminous), Pittsburgh No. 8 (high volatile bituminous), Lewiston?Stockton (high volatile bituminous), Blind Canyon (high volatile bituminous), Illinois No. 6 (high volatile bituminous), Wyodak (sub-bituminous), and Beulah Zap (lignite). ...

A. L. Goodman; R. N. Favors; John W. Larsen

2006-10-05T23:59:59.000Z

375

Fluidized bed combustor 50 MW thermal power plant, Krabi, Thailand. Feasibility study. Export trade information  

SciTech Connect (OSTI)

The report presents the results of a study prepared by Burns and Roe for the Electricity Generating Authority of Thailand to examine the technical feasibility and economic attractiveness for building a 50 MW Atmospheric Fluidized Bed Combustion lignite fired power plant at Krabi, southern Thailand. The study is divided into seven main sections, plus an executive summary and appendices: (1) Introduction; (2) Atmospheric Fluidized Bed Combustion Technology Overview; (3) Fuel and Limestone Tests; (4) Site Evaluation; (5) Station Design and Arrangements; (6) Environmental Considerations; (7) Economic Analysis.

Not Available

1993-01-01T23:59:59.000Z

376

Model for attrition in fluidized beds  

SciTech Connect (OSTI)

A model developed to predict the particle-size distribution and amount of fines generated during the attrition of particles in fluidized beds agrees well with experimental data for siderite iron ore and lignite char. Certain parameters used in the model are independent of particle size, orifice size, system pressure, bed weight, and attrition time, thus making the model suitable for scale-up purposes. Although the analysis was limited to a single jet with the attrition occurring at room temperature, the model can be extended to multi-jet, high-temperature operations.

Chen, T.P.; Sishtla, C.I.; Punwani, D.V.; Arastoopour, H.

1980-01-01T23:59:59.000Z

377

Fusibility and sintering characteristics of ash  

SciTech Connect (OSTI)

The temperature characteristics of ash fusibility are studied for a wide range of bituminous and brown coals, lignites, and shales with ratios R{sub B/A} of their alkaline and acid components between 0.03 and 4. Acritical value of R{sub B/A} is found at which the fusion temperatures are minimal. The sintering properties of the ashes are determined by measuring the force required to fracture a cylindrical sample. It is found that the strength of the samples increases sharply at certain temperatures. The alkali metal content of the ashes has a strong effect on their sintering characteristics.

Ots, A. A., E-mail: aots@sti.ttu.ee [Tallinn University of Technology (Estonia)

2012-03-15T23:59:59.000Z

378

Role of Fly Ash in the Removal of Organic Pollutants from Wastewater  

Science Journals Connector (OSTI)

In India the problem is further compounded by the use of wet fly ash collection systems by a large number of power plants, which results in degradation of the pozzolanic characteristics of ash, an essential ingredient for several ash-based products. ... To accommodate the many new subbituminous fly ashes, the American Society for Testing and Materials (ASTM) established two classes of fly ash, Class F from bituminous coal and Class C from subbituminous and lignite coal. ... Thermal power plant waste material (bottom ash) was utilized as a potential adsorbent for the textile dye malachite green. ...

M. Ahmaruzzaman

2009-02-27T23:59:59.000Z

379

Methods for Characterization of Composition of Fly Ashes from Coal-Fired Power Stations:? A Critical Overview  

Science Journals Connector (OSTI)

HTA and LTA are laboratory-produced coal ashes that are originated at (i) regulated temperatures, commonly at 500?815 °C in air (after the spontaneous coal combustion), and (ii) oxygen plasma ashing (normally at 150?200 °C), respectively. ... The wet disposal of ash, from the coal-fired thermal power plants, involves its mixing with water and its impoundment in the ash ponds or lagoons. ... The fabric, mineralogy, and chem. of high-calcium ash deposits from the Agios Dimitrios pulverized-lignite power plant in northern Greece were investigated as a key to the ability to improve the performance of the power plant. ...

Stanislav V. Vassilev; Christina G. Vassileva

2005-04-06T23:59:59.000Z

380

Investigation of the combustion characteristics of Zonguldak bituminous coal using DTA and DTG  

SciTech Connect (OSTI)

Combustion characteristics of coking, semicoking, and noncoking Turkish bituminous coal samples from Zonguldak basin were investigated applying differential thermal analysis (DTA) and differential thermogravimetry (DTG) techniques. Results were compared with that of the coke from Zonguldak bituminous coal, a Turkish lignite sample from Soma, and a Siberian bituminous coal sample. The thermal data from both techniques showed some differences depending on the proximate analyses of the samples. Noncombustible components of the volatile matter led to important changes in thermal behavior. The data front both methods were, evaluated jointly, and some thermal properties were interpreted considering these methods in a complementary combination.

Haykiri-Acma, H.; Yaman, S.; Kucukbayrak, S.; Okutan, H. [Istanbul Technical University, Istanbul (Turkey). Dept. of Chemical Engineering

2006-06-21T23:59:59.000Z

Note: This page contains sample records for the topic "bitu subbitu lignite" 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

Geological development, origin, and energy mineral resources of Williston Basin, North Dakota  

SciTech Connect (OSTI)

The Williston basin of North Dakota, Montana, South Dakota, and south-central Canada (Manitoba and Saskatchewan) is a major producer of oil and gas, lignite, and potash. Oil exploration and development in the United States portion of the Williston basin since 1972 have given impetus to restudy basin evolution and geologic controls for energy-resource locations. Consequently, oil production in North Dakota has jumped from a nadir of 19 million bbl in 1974 to 40 million bbl in 1980. The depositional origin of the basin and the major structural features of the basin are discussed. (JMT)

Gerhard, L.C.; Anderson, S.B.; Lefever, J.A.; Carlson, C.G.

1982-08-01T23:59:59.000Z

382

Runoff water quality and vegetation production on reclaimed mine spoil in the Post Oak Savannah of Texas  

E-Print Network [OSTI]

Resources for funding my project and Dow Chemical for providing the land. I would also like to thank Dr. Robert Knight for his guidance throughout this project and my other committee members, Dr. Will Blackburn and Dr. Kirk Brown. DBDICATIOH To my... III STUDY AREA AND METHODS The study site is a lignite test pi. t (made available by Dow Chemical) located 0. 8 km south of Dew, Texas west of Texas Highway 75. In the fall of 1981, the pit was filled with mixed overburden, graded and crowned...

Losensky, Karen Mae

2012-06-07T23:59:59.000Z

383

Structure of the Salina-Forest City interbasin boundary from seismic studies  

E-Print Network [OSTI]

that have been or could be reasonably exploited are depicted in fig. 2. Coal seams found in Kansas are typically less than 1 m (3.3 ft) thick. Some very minor coal (or lignite) deposits have been mined from units of Cretaceous age in central Kansas. Most... Marmton Group m DouglasGroup Cherokee Group ............. ............ ............. Kansas City Group 0 50 100 rnl - 0 50 100 km FIGURE ~??GENERA DISTRIBUTION OF STRIPPABLE COAL RESERVES BY GEOLOGIC GROUPFOR COALS UNDER 100 OR LESS FT (530 M...

Steeples, Don W.

1989-01-01T23:59:59.000Z

384

The Commission Forecast 1992 Report: Important Resource Planning Issues  

E-Print Network [OSTI]

plants will continue to play an important role over the next ten to fi Fteen years. However, given the current reserve margin of about 35 percent in Texas, new power plants will be added at a slower rate than the projected growth in peak demand... 10,000 MW of capacity between 1991 and the summer of 200 I. Natural gas-based capacity is the major contributor (51.5 percent of net capacity additions). This is a change from just two years ago when uti Iities reported that lignite...

Adib, P.

385

Natural Gas as a Boiler Fuel of Choice in Texas  

E-Print Network [OSTI]

cubic feet (Tcf) of natural gas to price. FIGURE 1 1990 Texas Fuel Mix [From PUCT Fuel Efficiency Report) Coal 24,3'1> Nalural Gas 38,7'1> , Nalural Gas 63,1'1> H yd ro 0.1 'I> Cogenerallon 8.6'1> L1gnlle 12,7'1> Nuclear 8,6'1> Lignite 19... 100 ti mes more polluting than gas. WHERE IS THE GAS? Most people who are even remotely involved with gas production or consumption know that Texas has considerable gas reserves. Figure 2 indicates U.S. natural gas reserve distribution. Since...

Kmetz, W. J.

386

Gas Purchasing Strategies for the '90s  

E-Print Network [OSTI]

's role was to raise capital and explore for and develop new reserves and then simply sell gas into the nearest pipeline system at a regulated wellhead price. The pipeline's role was to enter into long term purchase arrangements with the producer...-based method. Since that time HL&P has diversified its fuel mix with coal, lignite, and most recently nuclear generated power from the South Texas Project Electric Generating Station. As a result, our natural gas demand has declined from a high...

Schuler, S. H.

387

"1. Carbon Dioxide Emission Factors for Stationary Combustion1"  

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

Fuel Emission Factors" Fuel Emission Factors" "(From Appendix H of the instructions to Form EIA-1605)" "1. Carbon Dioxide Emission Factors for Stationary Combustion1" "Fuel ",,"Emission Factor ",,"Units" "Coal2" "Anthracite",,103.69,,"kg CO2 / MMBtu" "Bituminous",,93.28,,"kg CO2 / MMBtu" "Sub-bituminous",,97.17,,"kg CO2 / MMBtu" "Lignite",,97.72,,"kg CO2 / MMBtu" "Electric Power Sector",,95.52,,"kg CO2 / MMBtu" "Industrial Coking",,93.71,,"kg CO2 / MMBtu" "Other Industrial",,93.98,,"kg CO2 / MMBtu" "Residential/Commercial",,95.35,,"kg CO2 / MMBtu" "Natural Gas3"

388

regionalmaps  

Gasoline and Diesel Fuel Update (EIA)

Specific LNG Terminals Specific LNG Terminals Generic LNG Terminals Pacifi c (9) Moun tain (8) CA (12) AZ/N M (11) W. North Centr al (4) W. South Centr al (7) E. South Centr al (6) E. North Centr al (3) S. Atlan tic (5) FL (10) Mid. Atlan tic (2) New Engl. (1) W. Cana da E. Cana da MacK enzie Alask a Cana da Offsh ore and LNG Mexic o Baha mas Primary Flows Secondary Flows Pipeline Border Crossing Specific LNG Terminals Generic LNG Terminals Figure 6. Coal Supply Regions Source: Energy Information Administration. Office of Integrated Analysis and Forecasting WA ID OR CA NV UT TX OK AR MO LA MS AL GA FL TN SC NC KY VA WV WY CO SD ND MI MN WI IL IN OH MD PA NJ DE CT MA NH VT NY ME RI MT NE IA KS MI AZ NM 500 0 SCALE IN MILES APPALACHIA Northern Appalachia Central Appalachia Southern Appalachia INTERIOR NORTHERN GREAT PLAINS Eastern Interior Western Interior Gulf Lignite Dakota Lignite Western Montana

389

regionalmaps  

Gasoline and Diesel Fuel Update (EIA)

LNG Imports LNG Imports Pacifi c (9) Moun tain (8) CA (12) AZ/N M (11) W. North Centr al (4) W. South Centr al (7) E. South Centr al (6) E. North Centr al (3) S. Atlan tic (5) FL (10) Mid. Atlan tic (2) New Engl. (1) W. Cana da E. Cana da MacK enzie Alask a Cana da Offsh ore and LNG Mexic o Baha mas Primary Flows Secondary Flows Pipeline Border Crossing Figure 6. Coal Supply Regions Source: Energy Information Administration. Office of Integrated Analysis and Forecasting WA ID OR CA NV UT TX OK AR MO LA MS AL GA FL TN SC NC KY VA WV WY CO SD ND MI MN WI IL IN OH MD PA NJ DE CT MA NH VT NY ME RI MT NE IA KS MI AZ NM 500 0 SCALE IN MILES APPALACHIA Northern Appalachia Central Appalachia Southern Appalachia INTERIOR NORTHERN GREAT PLAINS Eastern Interior Western Interior Gulf Lignite Dakota Lignite Western Montana Wyoming, Northern Powder River Basin Wyoming, Southern Powder River Basin Western Wyoming

390

A decoupled approach for NOx–N2O 3-D CFD modeling in CFB plants  

Science Journals Connector (OSTI)

Abstract In this study, a 3D CFD model for the formation of \\{NOx\\} and N2O in a lignite fired 1.2 MWth CFB pilot plant is developed. The decoupled approach (decoupled from combustion simulation) is tested for the minimization of computational cost. As combustion simulation is prerequired, this was achieved through a simplified 3-D CFD combustion model. The developed model is then applied to the pilot-scale 1.2 MWth CFB plant and validated against experimental data. As concerns the NOx–N2O model, an extensive literature review is also carried out for the incorporation of the appropriate reactions network and respective reaction rates expressions. Results show that homogenous reactions are favoured on the lower section of the bed, due to the abundance of fuel devolatilization products. On the other hand, on the upper section, heterogeneous reactions govern nitric oxide formation/reduction. It is found that for the lignite examined in this work, HCN is released in negligible amounts during char combustion. The proposed and validated CFD model for \\{NOx\\} and N2O, is capable of examining the effect of different operational parameters and coal properties on the overall nitric oxides emissions from a CFB combustor, with low computational cost and without the additional expenses for pilot-scale experiments.

A. Nikolopoulos; I. Malgarinos; N. Nikolopoulos; P. Grammelis; S. Karrelas; E. Kakaras

2014-01-01T23:59:59.000Z

391

APEC experts` group on clean coal technology  

SciTech Connect (OSTI)

These proceedings are the result of a Technical Seminar of the APEC Experts Group on Clean Coal Technology, held in Thailand, September 6-10, 1993. The National Energy Policy Council of Thailand requested the seminar in response to growing public, government and private sector environmental concerns related to increased use of lignite for electricity generation in Thailand. The core of the seminar was a two-day series of 25 technical papers contained in these proceedings. The goals were: (1) to inform government officials and electric utility managers on the range of CCTs, their commercial status, environmental performance, and suitability for various types of coal, including lignite; and (2) to hold a public seminar to inform the public about the same issues set in the context of energy policy concerns that were articulated by the National Energy Policy Council. Sixty people participated in the technical seminar held in Chiang Mai, and approximately 170 people attended the public seminar in Bangkok, Thailand. All papers have been abstracted and indexed separately for inclusion in the Energy Science and Technology Database.

NONE

1993-12-31T23:59:59.000Z

392

Coal upgrading program for Usti nad Labem, Czech Republic: Task 8.3. Topical report, October 1994--August 1995  

SciTech Connect (OSTI)

Coal has been a major energy source in the Czech Republic given its large coal reserves, especially brown coal and lignite (almost 4000 million metric tons) and smaller reserves of hard, mainly bituminous, coal (over 800 million tons). Political changes since 1989 have led to the reassessment of the role of coal in the future economy as increasing environmental regulations affect the use of the high-sulfur and high-ash brown coal and lignite as well as the high-ash hard coal. Already, the production of brown coal has declined from 87 million metric tons per year in 1989 to 67 million metric tons in 1993 and is projected to decrease further to 50 million metric tons per year of brown coal by the year 2000. As a means of effectively utilizing its indigenous coal resources, the Czech Republic is upgrading various technologies, and these are available at different stages of development, demonstration, and commercialization. The purpose of this review is to provide a database of information on applicable technologies that reduce the impact of gaseous (SO{sub 2}, NO{sub x}, volatile organic compounds) and particulate emissions from the combustion of coal in district and residential heating systems.

Young, B.C.; Musich, M.A.

1995-10-01T23:59:59.000Z

393

USE OF COAL DRYING TO REDUCE WATER CONSUMED IN PULVERIZED COAL POWER PLANTS  

SciTech Connect (OSTI)

U.S. low rank coals contain relatively large amounts of moisture, with the moisture content of subbituminous coals typically ranging from 15 to 30 percent and that for lignites from 25 and 40 percent. High fuel moisture has several adverse impacts on the operation of a pulverized coal generating unit, for it can result in fuel handling problems and it affects heat rate, stack emissions and maintenance costs. Theoretical analyses and coal test burns performed at a lignite fired power plant show that by reducing the fuel moisture, it is possible to improve boiler performance and unit heat rate, reduce emissions and reduce water consumption by the evaporative cooling tower. The economic viability of the approach and the actual impact of the drying system on water consumption, unit heat rate and stack emissions will depend critically on the design and operating conditions of the drying system. The present project evaluated the low temperature drying of high moisture coals using power plant waste heat to provide the energy required for drying. Coal drying studies were performed in a laboratory scale fluidized bed dryer to gather data and develop models on drying kinetics. In addition, analyses were carried out to determine the relative costs and performance impacts (in terms of heat rate, cooling tower water consumption and emissions) of drying along with the development of optimized drying system designs and recommended operating conditions.

Edward K. Levy; Nenad Sarunac; Harun Bilirgen; Hugo Caram

2006-03-01T23:59:59.000Z

394

Turkey opens electricity markets as demand grows  

SciTech Connect (OSTI)

Turkey's growing power market has attracted investors and project developers for over a decade, yet their plans have been dashed by unexpected political or financial crises or, worse, obstructed by a lengthy bureaucratic approval process. Now, with a more transparent retail electricity market, government regulators and investors are bullish on Turkey. Is Turkey ready to turn the power on? This report closely examine Turkey's plans to create a power infrastructure capable of providing the reliable electricity supplies necessary for sustained economic growth. It was compiled with on-the-ground research and extensive interview with key industrial and political figures. Today, hard coal and lignite account for 21% of Turkey's electricity generation and gas-fired plants account for 50%. The Alfin Elbistan-B lignite-fired plant has attracted criticism for its lack of desulfurization units and ash dam facilities that have tarnished the industry's image. A 1,100 MW hard-coal fired plant using supercritical technology is under construction. 9 figs., 1 tab.

McKeigue, J.; Da Cunha, A.; Severino, D. [Global Business Reports (United States)

2009-06-15T23:59:59.000Z

395

Update on Vattenfall’s 30 \\{MWth\\} oxyfuel pilot plant in Schwarze Pumpe  

Science Journals Connector (OSTI)

Vattenfall is presently taking an experimental large-scale pilot test facility into operation for the detailed investigation of the oxyfuel firing process. The plant is located southeast of Berlin in Germany in the vicinity of the existing lignite-fired power plant Schwarze Pumpe. The oxyfuel pilot plant consists of a single 30MWth, top-mounted, PF burner and the subsequent flue gas cleaning equipment, electrostatic precipitator, wet flue gas desulpherization and the flue gas condenser. In addition to these components, a CO2 separation plant is placed downstream of the flue gas condenser to produce liquid CO2. A cryogenic air separation unit located at the site will supply gaseous oxygen with a minimum purity of 99,5% needed for the combustion. The burner is designed for both pre-dried lignite and bituminous coal which will be tested in a later phase. The construction started in January 2007 and the first major test phase is planned to start in November 2008. The liquid CO2 is planned to be used for test injections to qualify the Altmark gas field in Germany as a storage site for CO2 for up-coming carbon capture and storage projects and to investigate opportunities for enhanced gas recovery. This paper will present some background information and describe the planned measurements. Initial experiences from the commissioning of the pilot plant will be presented.

Lars Strömberg; Göran Lindgren; Jürgen Jacoby; Rainer Giering; Marie Anheden; Uwe Burchhardt; Hubertus Altmann; Frank Kluger; Georg-Nikolaus Stamatelopoulos

2009-01-01T23:59:59.000Z

396

Alaska coal geology, resources, and coalbed methane potential  

SciTech Connect (OSTI)

Estimated Alaska coal resources are largely in Cretaceous and Tertiary rocks distributed in three major provinces, Northern Alaska-Slope, Central Alaska-Nenana, and Southern Alaska-Cook Inlet. Cretaceous resources, predominantly bituminous coal and lignite, are in the Northern Alaska-Slope coal province. Most of the Tertiary resources, mainly lignite to subbituminous coal with minor amounts of bituminous and semianthracite coals, are in the other two provinces. The combined measured, indicated, inferred, and hypothetical coal resources in the three areas are estimated to be 5,526 billion short tons (5,012 billion metric tons), which constitutes about 87 percent of Alaska's coal and surpasses the total coal resources of the conterminous United States by 40 percent. Coal mining has been intermittent in the Central Alaskan-Nenana and Southern Alaska-Cook Inlet coal provinces, with only a small fraction of the identified coal resource having been produced from some dozen underground and strip mines. Alaskan coals have a lower sulfur content (averaging 0.3 percent) than most coals in the conterminous United States and are within or below the minimum sulfur value mandated by the 1990 Clean Air Act amendments. Another untapped potential resource is coalbed methane estimated to total 1,000 trillion cubic feet (28 trillion cubic meters).

Romeo M. Flores; Gary D. Stricker; Scott A. Kinney

2005-11-15T23:59:59.000Z

397

EDS coal liquefaction process development: Phase V. Final technical progress report, Volume I  

SciTech Connect (OSTI)

All objectives in the EDS Cooperative Agreement for Phases III-B through V have been achieved for the RCLU pilot plants. EDS operations have been successfully demonstrated in both the once-through and bottoms recycle modes for coals of rank ranging from bituminous to lignitic. An extensive data base detailing the effects of process variable changes on yields, conversions and product qualities for each coal has been established. Continuous bottoms recycle operations demonstrated increased overall conversion and improved product slate flexibility over once-through operations. The hydrodynamics of the liquefaction reactor in RCLU were characterized through tests using radioactive tracers in the gas and slurry phases. RCLU was shown to have longer liquid residence times than ECLP. Support work during ECLP operations contributed to resolving differences between ECLP conversions and product yields and those of the small pilot plants. Solvent hydrogenation studies during Phases IIIB-V of the EDS program focused on long term activity maintenance of the Ni-MO-10 catalyst. Process variable studies for solvents from various coals (bituminous, subbituminous, and lignitic), catalyst screening evaluations, and support of ECLP solvent hydrogenation operations. Product quality studies indicate that highly cyclic EDS naphthas represent unique and outstanding catalytic reforming feedstocks. High volumes of high octane motor gasoline blendstock are produced while liberating a considerable quantity of high purity hydrogen.

None

1984-02-01T23:59:59.000Z

398

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

Science Journals Connector (OSTI)

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

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

2014-01-01T23:59:59.000Z

399

An evaluation of Substitute natural gas production from different coal gasification processes based on modeling  

Science Journals Connector (OSTI)

Coal and lignite will play a significant role in the future energy production. However, the technical options for the reduction of CO2 emissions will define the extent of their share in the future energy mix. The production of synthetic or substitute natural gas (SNG) from solid fossil fuels seems to be a very attractive process: coal and lignite can be upgraded into a methane rich gas which can be transported and further used in high efficient power systems coupled with CO2 sequestration technologies. The aim of this paper is to present a modeling analysis comparison between substitute natural gas production from coal by means of allothermal steam gasification and autothermal oxygen gasification. In order to produce SNG from syngas several unit operations are required such as syngas cooling, cleaning, potential compression and, of course, methanation reactors. Finally the gas which is produced has to be conditioned i.e. removal of unwanted species, such as CO2 etc. The heat recovered from the overall process is utilized by a steam cycle, producing power. These processes were modeled with the computer software IPSEpro™. An energetic and exergetic analysis of the coal to SNG processes have been realized and compared.

S. Karellas; K.D. Panopoulos; G. Panousis; A. Rigas; J. Karl; E. Kakaras

2012-01-01T23:59:59.000Z

400

Development of Biological Coal Gasification (MicGAS Process). Topical report, July 1991--February 1993  

SciTech Connect (OSTI)

Laboratory and bench scale reactor research carried out during the report period confirms the feasibility of biomethanation of Texas lignite (TxL) and some other low-rank coals to methane by specifically developed unique anaerobic microbial consortia. The data obtained demonstrates specificity of a particular microbial consortium to a given lignite. Development of a suitable microbial consortium is the key to the success of the process. The Mic-1 consortium was developed to tolerate higher coal loadings of 1 and 5% TxL in comparison to initial loadings of 0.01% and 0.1% TxL. Moreover, the reaction period was reduced from 60 days to 14 to 21 days. The cost of the culture medium for bioconversion was reduced by studying the effect of different growth factors on the biomethanation capability of Mic-1 consortium. Four different bench scale bioreactor configurations, namely Rotating Biological Contactor (RBC), Upflow Fluidized Bed Reactor (UFBR), Trickle Bed Reactor (TBR), and Continuously Stirred Tank Reactor (CSTR) were evaluated for scale up studies. Preliminary results indicated highest biomethanation of TxL by the Mic-1 consortium in the CSTR, and lowest in the trickle bed reactor. However, highest methane production and process efficiency were obtained in the RBC.

Srivastava, K.C.

1993-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "bitu subbitu lignite" 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

Thermodynamic and economic analysis of polygeneration system integrating atmospheric pressure coal pyrolysis technology with circulating fluidized bed power plant  

Science Journals Connector (OSTI)

Abstract Lignite-based polygeneration system has been considered as a feasible technology to realize clean and efficient utilization of coal resources. A newly polygeneration system has been proposed, featuring the combination of a 2 × 300 MW circulating fluidized bed (CFB) power plant and atmospheric pressure fluidized bed pyrolyzers. Xiaolongtan lignite is pyrolyzed in pyrolyzers. Pyrolyzed volatiles are further utilized for the co-generation of methanol, oil, and electricity, while char residues are fired in CFB boilers to maintain the full load condition of boilers. Detailed system models were built, and the optimum operation parameters of the polygeneration plant were sought. Technical and economic performances of optimum design of the polygeneration plant were analyzed and compared with those of the conventional CFB power plant based on the evaluation of energy and exergy efficiency, internal rate of return (IRR), and payback period. Results revealed that system efficiency and the IRR of the polygeneration plant are ca. 9% and 14% points higher than those of the power plant, respectively. The study also analyzed the effects of market fluctuations on the economic condition of the polygeneration plant, and found that prices of fuel, material, and products have great impacts on the economic characteristics of the polygeneration plant. Polygeneration plant is more economic than CFB power plant even when prices fluctuate within a wide range. This paper provides a thorough evaluation of the polygeneration plant, and the study indicates that the proposed polygeneration plant has a bright prospect.

Zhihang Guo; Qinhui Wang; Mengxiang Fang; Zhongyang Luo; Kefa Cen

2014-01-01T23:59:59.000Z

402

USE OF COAL DRYING TO REDUCE WATER CONSUMED IN PULVERIZED COAL POWER PLANTS  

SciTech Connect (OSTI)

Low rank fuels such as subbituminous coals and lignites contain significant amounts of moisture compared to higher rank coals. Typically, the moisture content of subbituminous coals ranges from 15 to 30 percent, while that for lignites is between 25 and 40 percent, where both are expressed on a wet coal basis. High fuel moisture has several adverse impacts on the operation of a pulverized coal generating unit. High fuel moisture results in fuel handling problems, and it affects heat rate, mass rate (tonnage) of emissions, and the consumption of water needed for evaporative cooling. This project deals with lignite and subbituminous coal-fired pulverized coal power plants, which are cooled by evaporative cooling towers. In particular, the project involves use of power plant waste heat to partially dry the coal before it is fed to the pulverizers. Done in a proper way, coal drying will reduce cooling tower makeup water requirements and also provide heat rate and emissions benefits. The technology addressed in this project makes use of the hot circulating cooling water leaving the condenser to heat the air used for drying the coal (Figure 1). The temperature of the circulating water leaving the condenser is usually about 49 C (120 F), and this can be used to produce an air stream at approximately 43 C (110 F). Figure 2 shows a variation of this approach, in which coal drying would be accomplished by both warm air, passing through the dryer, and a flow of hot circulating cooling water, passing through a heat exchanger located in the dryer. Higher temperature drying can be accomplished if hot flue gas from the boiler or extracted steam from the turbine cycle is used to supplement the thermal energy obtained from the circulating cooling water. Various options such as these are being examined in this investigation. This is the eleventh Quarterly Report for this project. The background and technical justification for the project are described, including potential benefits of reducing fuel moisture using power plant waste heat, prior to firing the coal in a pulverized coal boiler. During this last Quarter, the development of analyses to determine the costs and financial benefits of coal drying was continued. The details of the model and key assumptions being used in the economic evaluation are described in this report.

Edward Levy

2005-10-01T23:59:59.000Z

403

Field Testing of a Wet FGD Additive for Enhanced Mercury Control - Pilot-Scale Test Results  

SciTech Connect (OSTI)

This Topical Report summarizes progress on Cooperative Agreement DE-FC26-04NT42309, ''Field Testing of a Wet FGD Additive.'' The objective of the project is to demonstrate the use of a flue gas desulfurization (FGD) additive, Degussa Corporation's TMT-15, to prevent the reemissions of elemental mercury (Hg{sup 0}) in flue gas exiting wet FGD systems on coal-fired boilers. Furthermore, the project intends to demonstrate that the additive can be used to precipitate most of the mercury (Hg) removed in the wet FGD system as a fine TMT salt that can be separated from the FGD liquor and bulk solid byproducts for separate disposal. The project will conduct pilot and full-scale tests of the TMT-15 additive in wet FGD absorbers. The tests are intended to determine required additive dosage requirements to prevent Hg{sup 0} reemissions and to separate mercury from the normal FGD byproducts for three coal types: Texas lignite/Power River Basin (PRB) coal blend, high-sulfur Eastern bituminous coal, and low-sulfur Eastern bituminous coal. The project team consists of URS Group, Inc., EPRI, TXU Generation Company LP, Southern Company, and Degussa Corporation. TXU Generation has provided the Texas lignite/PRB co-fired test site for pilot FGD tests, Monticello Steam Electric Station Unit 3. Southern Company is providing the low-sulfur Eastern bituminous coal host site for wet scrubbing tests, as well as the pilot and full-scale jet bubbling reactor (JBR) FGD systems to be tested. A third utility, to be named later, will provide the high-sulfur Eastern bituminous coal full-scale FGD test site. Degussa Corporation is providing the TMT-15 additive and technical support to the test program. The project is being conducted in six tasks. Of the six project tasks, Task 1 involves project planning and Task 6 involves management and reporting. The other four tasks involve field testing on FGD systems, either at pilot or full scale. The four tasks include: Task 2 - Pilot Additive Testing in Texas Lignite Flue Gas; Task 3 - Full-scale FGD Additive Testing in High Sulfur Eastern Bituminous Flue Gas; Task 4 - Pilot Wet Scrubber Additive Tests at Yates; and Task 5 - Full-scale Additive Tests at Plant Yates. This topical report presents the results from the Task 2 and Task 4 pilot-scale additive tests. The Task 3 and Task 5 full-scale additive tests will be conducted later in calendar year 2006.

Gary M. Blythe

2006-03-01T23:59:59.000Z

404

NBP RFI: Communications Requirements | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

NBP RFI: Communications Requirements NBP RFI: Communications Requirements NBP RFI: Communications Requirements Cleco Corporation greatly appreciates the opportunity to provide information to the Department of Energy (DOE) on the communications needs of utilities. Cleco is an energy services company based in central Louisiana, serving approximately 276,000 residential, commercial and industrial customers since 1934. Cleco manages over 3,000 megawatts of electric capacity through its regulated Cleco Power LLC and unregulated Cleco Midstream Resources LLC businesses, utilizing a diverse fuel mix of lignite, coal, petcoke and natural gas. With 1,300 employees, Cleco manages and operates 70 transmission substations connected via 1,300 miles of transmission lines, together feeding over 350 distribution substations,

405

Microsoft Word - DOE RFI - NBP RFI Communications Requirements.docx  

Broader source: Energy.gov (indexed) [DOE]

0 0 Donahue Ferry Road P.O. Box 5000 Pineville, LA 71361-5000 www.cleco.com Tel. 318-484-7400 July 12, 2010 U. S. Department of Energy Office of the General Counsel 1000 Independence Ave, SW, Room 6A245 Washington, DC 20585 Subject: NBP RFI: Communications Requirements Introduction Cleco Corporation greatly appreciates the opportunity to provide information to the Department of Energy (DOE) on the communications needs of utilities. Cleco is an energy services company based in central Louisiana, serving approximately 276,000 residential, commercial and industrial customers since 1934. Cleco manages over 3,000 megawatts of electric capacity through its regulated Cleco Power LLC and unregulated Cleco Midstream Resources LLC businesses, utilizing a diverse fuel mix of lignite, coal, petcoke and natural gas. With 1,300 employees, Cleco manages and operates 70 transmission

406

Coal Distribution Database, 2006  

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

7 7 December 2008 2007 Changes in Coal Distribution Table Format and Data Sources The changes in the coal distribution data sources made in 2006 are carried over to the 2007 tables. As in 2006, EIA used data from the EIA-3 survey to distribute synfuel to the electric generation sector on a state level, aggregated with all of the other coal (such as bituminous, subbituminous, and lignite coal) sent to electric generating plants. EIA supplemented the EIA-3 data with previously collected information to determine the mode of transportation from the synfuel plant to the electric generating consumer, which was not reported on the EIA-3A survey form. Although not contained in the EIA-6A master file, this information has been documented in an ancillary spreadsheet in the EIA

407

 

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

AEP Climate Change Strategy AEP Climate Change Strategy Bruce Braine Vice President - Strategic Policy Analysis April 7, 2008 Mountaineer Plant - New Haven, WV Northeastern Plant - Oologah, OK 2 Coal/Lignite 67% Nat. Gas/Oil 24% Nuclear 6% Pumped Storage/ Hydro/Wind 3% AEP's Generation Fleet 38,388 MW Capacity Company Overview 5.1 million customers in 11 states Industry-leading size and scale of assets: Asset Size Industry Rank Domestic Generation ~38,300 MW # 2 Transmission ~39,000 miles # 1 Distribution ~208,000 miles # 1 3 AEP's Climate Strategy § Being proactive and engaged in the development of climate policy § Investing in science/technology R&D § Taking Voluntary action now, making real reductions thru CCX (2003-07: 40 MM Tons reductions); 2011 Voluntary Commitment (additional 5 MM Tons/year reductions).

408

Categorical Exclusion Determinations: North Dakota | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

June 2, 2010 June 2, 2010 CX-002500: Categorical Exclusion Determination The Northern Great Plains Water Consortium: Subtask 5.2, Budget Period 3 CX(s) Applied: A9, A11 Date: 06/02/2010 Location(s): Grand Forks, North Dakota Office(s): Fossil Energy, National Energy Technology Laboratory June 2, 2010 CX-002497: Categorical Exclusion Determination Capitalizing on Carbon Dioxide Storage in Lignite Coal: Biological In Situ Methane Production CX(s) Applied: B3.6 Date: 06/02/2010 Location(s): Grand Forks, North Dakota Office(s): Fossil Energy, National Energy Technology Laboratory May 26, 2010 CX-002444: Categorical Exclusion Determination Water Minimization Technology CX(s) Applied: B3.6 Date: 05/26/2010 Location(s): Grand Forks, North Dakota Office(s): Fossil Energy, National Energy Technology Laboratory

409

ENVIRONMENTAL ASSESSMENT OF No REMEDIAL ACTION AT THE INACTIVE URANIFEROUS  

Broader source: Energy.gov (indexed) [DOE]

7 206 7 206 REV. 0 ENVIRONMENTAL ASSESSMENT OF No REMEDIAL ACTION AT THE INACTIVE URANIFEROUS LIGNITE ASHING SITES AT BELFIELD AND BOWMAN. NORTH DAKOTA United States Department of Energy Uranium Mill Tailings Remedial Action Project June 1997 INTENDED FOR PUBLIC RELEASE This report has been reproduced from the best available copy. Available in paper copy and microfiche Number of pages in this report: 5 8 DOE and DOE contractors can obtain copies of this report from: Office of Scientific and Technical Information P.O. Box 62 Oak Ridge, TN 37831 (61 5) 576-8401 This report is publicly available from: National Technical Information Service Department of Commerce 5285 Port Royai Road Springfield, VA 22161 (703) 487-4650 DOE/EA-1206 REV. 0 ENVIRONMENTAL ASSESSMENT

410

SAS Output  

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

3. Carbon Dioxide Uncontrolled Emission Factors 3. Carbon Dioxide Uncontrolled Emission Factors Fuel EIA Fuel Code Source and Tables (As Appropriate) Factor (Pounds of CO2 Per Million Btu)*** Bituminous Coal BIT Source: 1 205.30000 Distillate Fuel Oil DFO Source: 1 161.38600 Geothermal GEO Estimate from EIA, Office of Integrated Analysis and Forecasting 16.59983 Jet Fuel JF Source: 1 156.25800 Kerosene KER Source: 1 159.53500 Lignite Coal LIG Source: 1 215.40000 Municipal Solid Waste MSW Source: 1 (including footnote 2 within source) 91.90000 Natural Gas NG Source: 1 117.08000 Petroleum Coke PC Source: 1 225.13000 Propane Gas PG Sources: 1 139.17800 Residual Fuel Oil RFO Source: 1 173.90600 Synthetic Coal SC Assumed to have the emissions similar to Bituminous Coal. 205.30000

411

Word Pro - Untitled1  

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

3 3 Table 4.8 Coal Demonstrated Reserve Base, January 1, 2011 (Billion Short Tons) Region and State Anthracite Bituminous Coal Subbituminous Coal Lignite Total Underground Surface Underground Surface Underground Surface Surface 1 Underground Surface Total Appalachian .............................................. 4.0 3.3 68.2 21.9 0.0 0.0 1.1 72.1 26.3 98.4 Alabama ................................................... .0 .0 .9 2.1 .0 .0 1.1 .9 3.1 4.0 Kentucky, Eastern .................................... .0 .0 .8 9.1 .0 .0 .0 .8 9.1 9.8 Ohio .......................................................... .0 .0 17.4 5.7 .0 .0 .0 17.4 5.7 23.1

412

NETL: Gasifipedia  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Gasifier: Commercial Gasifiers: Fixed (Moving) Bed Gasifiers Gasifier: Commercial Gasifiers: Fixed (Moving) Bed Gasifiers Lurgi Dry-Ash Gasifier Lurgi GmbH first developed Lurgi dry-ash gasification technology in the early 1930s to produce what was still known as town gas, in one of the first practical applications of gasification. The first commercial plant based on this technology was built in 1936. In the 1950s, Lurgi and Ruhrgas further developed the technology to handle bituminous coals in addition to the traditional lignite feedstock. Lurgi dry-ash gasification technology has since been used worldwide to produce synthesis gas (syngas), and is the basis of such major projects as the Sasol synfuel plants in South Africa, and the Great Plains Synfuels Plant in North Dakota. An estimated 150 Lurgi gasifiers are in operation today, mainly in South Africa, China and the United States (North Dakota).

413

doi:10.1016/j.fuproc.2005.07.001  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

The The PCO process for photochemical removal of mercury from flue gas B Christopher R. McLarnon a , Evan J. Granite b, * , Henry W. Pennline b a Powerspan Corp., P.O. Box 219, 54 Old Bay Road, New Durham, NH 03855, United States b National Energy Technology Laboratory, United States Department of Energy, P.O. Box 10940, MS 58-106, Pittsburgh, PA 15236-0940, United States Abstract A promising technology has been developed to capture and remove elemental mercury species from coal-fired power plants. Powerspan Corp. has licensed the technology and initiated a bench and pilot test program to develop the Photochemical Oxidation, or PCOi, process for commercial application with subbituminous and lignite fuels. The process has the potential to serve as a low cost mercury oxidation technology that will facilitate elemental mercury removal in a downstream SO 2 scrubber, wet electrostatic precipitator

414

Monthly Flash Estimates of Electric Power Data  

Gasoline and Diesel Fuel Update (EIA)

7/22/2011 7/22/2011 Table of Contents 1. Commentary Page 1 2. Key Indicators of Generation, Consumption & Stocks Page 2 3. Month-to-Month Comparisons: Generation, Consumption and Stocks (Total) Page 3 4. Net Generation Trends Page 4 5. Fossil Fuel Consumption Trends Page 5 6. Fossil Fuel Stock Trends Page 6 7. Average Number of Days of Burn Non-Lignite Coal Page 7 8. Month-to-Month Comparisons: Electric Power Retail Sales and Average Prices Page 8 9. Retail Sales Trends Page 9 10. Average Retail Price Trends Page 10 11. Heating and Cooling Degree Days Page 11 12. Documentation Page 12 Monthly Flash Estimates of Data for: May 2011 Section 1. Commentary Electric Power Data The contiguous United States experienced temperatures that were slightly below normal in May 2011.

415

PriceTechNotes2011.vp  

Gasoline and Diesel Fuel Update (EIA)

prices prices are developed for the following three categories: coking coal; steam coal (all noncoking coal); and coal coke imports and exports. Coking coal, used in the industrial sector only, is a high-quality bitumi- nous coal that is used to make coal coke. Steam coal, which may be used by all sectors, includes anthracite, bituminous coal, subbituminous coal, and lignite. In the industrial sector, coal consumption is the sum of cok- ing coal and steam coal. The industrial coal price is the quantity- weighted average price of these two components. Imports and exports of coal coke are available only on the national level and are accounted for in the industrial sector. Coal coke imports and ex- ports are reported separately and are not averaged with other coal prices and expenditures. Coking Coal Coking coal is generally more expensive than steam coal; therefore, it is identified separately

416

Dan Klempel Basin Electric Power Cooperative DOE  

Broader source: Energy.gov (indexed) [DOE]

Dan Dan Klempel Basin Electric Power Cooperative DOE 2009 Congestion Study Workshop Oklahoma City, Oklahoma June 18, 2008 Page 1 of 5 Basin Electric Power Cooperative would like to thank the Department of Energy for this opportunity to share some of our thoughts on transmission congestion issues. Basin Electric is a wholesale power supplier to rural electric cooperatives located in the mid-west and in both the east and west interconnections. Naturally, our generation and transmission facilities also reside in both interconnections so we use asynchronous back-to-back DC facilities to balance loads with resources. With headquarters in Bismarck, North Dakota; we find ourselves in the heart of some of the nations most desirable wind patterns for potential renewable energy development as well as electric energy production from more traditional sources. Lignite coal has been a reliable

417

OSTI, US Dept of Energy, Office of Scientific and Technical Information |  

Office of Scientific and Technical Information (OSTI)

DOE's STI Program and Products DOE's STI Program and Products Slide01 Slide01 DOE's STI Program and Products Sharon Jordan Assistant Director for Program Integration CENDI Meeting May 5, 2010 Slide02 Slide02 Focus of DOE's STI Program Priority #1: * Create a centrally managed, authoritative collection of DOE STI for long-term use and access Priority #2: * Ensure worldwide scientific knowledge and discoveries are accessible to DOE researchers, thus accelerating the advancement of science Slide03 Slide03 Slide 3: DOE's Scientific Disciplines From A to Z (well, W) ADVANCED PROPULSION SYSTEMS APPLIED LIFE SCIENCES ASTRONOMY AND ASTROPHYSICS ATOMIC AND MOLECULAR PHYSICS BASIC BIOLOGICAL SCIENCES BIOMASS FUELS CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS COAL, LIGNITE, AND PEAT CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY DIRECT

418

Page not found | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

81 - 14990 of 29,416 results. 81 - 14990 of 29,416 results. Download EA-1400: Finding of No Significant Impact Wind Turbine Project at Fairmont Reservoir, Lancaster, California http://energy.gov/nepa/downloads/ea-1400-finding-no-significant-impact Download EA-1477: Finding of No Significant Impact Lignite Fuel Enhancement Project, Coal Creek Station, Great River Energy, Underwood, North Dakota http://energy.gov/nepa/downloads/ea-1477-finding-no-significant-impact Download EA-0170: Finding of No Significant Impact Naval Reactor Fuel Materials Facility http://energy.gov/nepa/downloads/ea-0170-finding-no-significant-impact Download EA-1613: Finding of No Significant Impact Proposed High Explosive Pressing Facility Pantex Plant, Amarillo, Texas http://energy.gov/nepa/downloads/ea-1613-finding-no-significant-impact

419

Plains CO2 Reduction Partnership PCOR | Open Energy Information  

Open Energy Info (EERE)

CO2 Reduction Partnership PCOR CO2 Reduction Partnership PCOR Jump to: navigation, search Name Plains CO2 Reduction Partnership (PCOR) Place Grand Forks, North Dakota Zip 58202-9018 Product North Dakota-based consortium researching CO2 storage options. PCOR is busy with the ECBM in the Unminable Lignite Research Project. References Plains CO2 Reduction Partnership (PCOR)[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Plains CO2 Reduction Partnership (PCOR) is a company located in Grand Forks, North Dakota . References ↑ "Plains CO2 Reduction Partnership (PCOR)" Retrieved from "http://en.openei.org/w/index.php?title=Plains_CO2_Reduction_Partnership_PCOR&oldid=349772"

420

Monthly Flash Estimates of Electric Power Data  

Gasoline and Diesel Fuel Update (EIA)

6/24/2011 6/24/2011 Table of Contents 1. Commentary Page 1 2. Key Indicators of Generation, Consumption & Stocks Page 2 3. Month-to-Month Comparisons: Generation, Consumption and Stocks (Total) Page 3 4. Net Generation Trends Page 4 5. Fossil Fuel Consumption Trends Page 5 6. Fossil Fuel Stock Trends Page 6 7. Average Number of Days of Burn Non-Lignite Coal Page 7 8. Month-to-Month Comparisons: Electric Power Retail Sales and Average Prices Page 8 9. Retail Sales Trends Page 9 10. Average Retail Price Trends Page 10 11. Heating and Cooling Degree Days Page 11 12. Documentation Page 12 Monthly Flash Estimates of Data for: April 2011 Section 1. Commentary Electric Power Data The contiguous United States experienced temperatures that were above normal in April 2011.

Note: This page contains sample records for the topic "bitu subbitu lignite" 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

Carbon Sequestration 101  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Perspectives on Carbon Capture and Storage Perspectives on Carbon Capture and Storage - Directions, Challenges, and Opportunities Thomas J. Feeley, III National Energy Technology Laboratory Carbon Capture and Storage November 13-15, 2007 Austin, Texas C Capture & Storage, Austin, TX Nov. 13-15, 2007 U.S. Fossil Fuel Reserves / Production Ratio 250+ Year Supply at Current Demand Levels ! 258 11.7 9.7 0 100 200 300 Coal Oil Natural Gas Anthracite & Bituminous Sub- Bituminous & Lignite Sources: BP Statistical Review, June 2004, - for coal reserves data - World Energy Council; EIA, Advance Summary U.S. Crude Oil, Natural Gas, and Natural Gas Liquids Reserves, 2003 Annual Report, September 22, 2004 - for oil and gas reserves data. C Capture & Storage, Austin, TX Nov. 13-15, 2007 80 120 160 200 240 1970 1975 1980

422

NETL: Clean Coal Technology Demonstration Program (CCTDP) - Round 2  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

NOx Control Technologies NOx Control Technologies Demonstration of Coal Reburning for Cyclone Boiler NOx Control - Project Brief [PDF-320KB] The Babcock & Wilcox Company, Cassville, WI Program Publications Final Reports Demonstration of Coal Reburning for Cyclone Boiler NOx Control, Final Project Report [PDF-14.4MB] (Feb 1994) Appendices 1 - 5 [PDF-2.6MB] (Feb 1994) Appendix 1: Small Boiler Simulator Description Appendix 2: Statement of Work by Task and Subtask Appendix 3: Evaluation of Reburning for NOx Control from Lignite-Fired Cyclone Boilers Appendix 4: Nelson Dewey In-Furnace gas Species and Temperature Measurements Appendix 5: Balance of Plant Details Appendix 6: Test Report - Nelson Dewey Cyclone Reburn Optimization and Performance Environmental Tests [PDF-6.2MB] (Feb 1994)

423

SAS Output  

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

2. Receipts and Quality of Coal by Rank Delivered for Electricity Generation: Electric Utilties by State, 2012 2. Receipts and Quality of Coal by Rank Delivered for Electricity Generation: Electric Utilties by State, 2012 Bituminous Subbituminous Lignite Census Division and State Receipts (Thousand Tons) Average Sulfur Percent by Weight Average Ash Percent by Weight Receipts (Thousand Tons) Average Sulfur Percent by Weight Average Ash Percent by Weight Receipts (Thousand Tons) Average Sulfur Percent by Weight Average Ash Percent by Weight New England 353 2.20 7.7 0 -- -- 0 -- -- Connecticut 0 -- -- 0 -- -- 0 -- -- Maine 0 -- -- 0 -- -- 0 -- -- Massachusetts 0 -- -- 0 -- -- 0 -- -- New Hampshire 353 2.20 7.7 0 -- -- 0 -- -- Rhode Island 0 -- -- 0 -- -- 0 -- -- Vermont 0 -- -- 0 -- -- 0 -- --

424

SAS Output  

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

5. Receipts and Quality of Coal by Rank Delivered for Electricity Generation: 5. Receipts and Quality of Coal by Rank Delivered for Electricity Generation: Industrial Sector by State, 2012 Bituminous Subbituminous Lignite Census Division and State Receipts (Thousand Tons) Average Sulfur Percent by Weight Average Ash Percent by Weight Receipts (Thousand Tons) Average Sulfur Percent by Weight Average Ash Percent by Weight Receipts (Thousand Tons) Average Sulfur Percent by Weight Average Ash Percent by Weight New England 19 0.66 6.9 0 -- -- 0 -- -- Connecticut 0 -- -- 0 -- -- 0 -- -- Maine 19 0.66 6.9 0 -- -- 0 -- -- Massachusetts 0 -- -- 0 -- -- 0 -- -- New Hampshire 0 -- -- 0 -- -- 0 -- -- Rhode Island 0 -- -- 0 -- -- 0 -- -- Vermont 0 -- -- 0 -- -- 0 -- --

425

NETL: Gasifipedia  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Coal to SNG Process Coal to SNG Process The Dakota Gasification Company's (DGC) Great Plains Synfuels Plant (GPSP) located near Beulah, North Dakota, is the only coal-to-SNG gasification plant in operation worldwide, producing approximately 153 MM scf/day of SNG [56 billion scf/year] from 6 million tons/year of lignite. In addition to SNG, a variety of byproduct process trains have been incorporated to add flexibility to plant economics: GPSP also produces ammonia for use as fertilizer and pipes captured pre-combustion CO2 to two Canadian oil fields for Enhanced Oil Recovery (EOR). The plant uses 14 Lurgi dry-ash gasifiers for syngas generation, adding an equilibrium-limited fixed bed bulk-methanation process for SNG synthesis. The technology is commercially proven, evidenced by the GPSP having been in operation since 1984.

426

Page not found | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

81 - 10190 of 26,764 results. 81 - 10190 of 26,764 results. Download CX-005045: Categorical Exclusion Determination Subtask 2.14 ? Beneficial Use of Carbon Dioxide for North Dakota Lignite-Fired Plants CX(s) Applied: A9, B3.6 Date: 01/19/2011 Location(s): Grand Forks, North Dakota Office(s): Fossil Energy, National Energy Technology Laboratory http://energy.gov/nepa/downloads/cx-005045-categorical-exclusion-determination Download CX-005046: Categorical Exclusion Determination Evaluating and Commercializing a Solvent Based EOR Technology CX(s) Applied: B3.6 Date: 01/19/2011 Location(s): Santa Barbara County, California Office(s): Fossil Energy, National Energy Technology Laboratory http://energy.gov/nepa/downloads/cx-005046-categorical-exclusion-determination Download CX-005047: Categorical Exclusion Determination

427

Electricity Monthly Update  

Gasoline and Diesel Fuel Update (EIA)

Coal Stocks: August 2011 Coal Stocks: August 2011 Stocks Coal stocks continued the usual summer decline as utilities burned into their summer stockpile in August. Sigificant declines from August 2010 were seen in total coal stockpiles, driven by a 14 percent drop in bituminous coal stockpiles as well as a 10 percent drop in subbituminous coal stockpiles. Lignite stockpiles declined by 6 percent over the same time period. Days of burn The average number of days of burn held at electric power plants is a forward looking estimate of coal supply given a power plant's current stockpile and past consumption patterns. The average number of days of burn held on hand at electric power plants increased slightly in August 2011 compared to previous months. This was largely driven by increases in

428

Recent News from the National Labs | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

9, 2010 9, 2010 A First Step towards Large-Scale Plants to Plastics Engineering Scientists may be able to produce plastic through a sustainable process based on the energy found in sunlight and carbon dioxide by optimizing the accumulation of fatty acids. November 5, 2010 A simulated collision of lead-ions, courtesy the ALICE experiment at CERN Geek-Up[11.05.10]: Quark Gluon Plasma, Solar-Power Generating Windows and CCS Field Studies Large Hadron Collider's (LHC) first record-setting run of high-energy proton collisions, new transparent film capable of absorbing light and generating electrical charge developed, and field test finds that opportunities to permanently store carbon in unmineable seams of lignite may be more widespread than previously documented -- all in this week's

429

OSTI, US Dept of Energy, Office of Scientific and Technical Information |  

Office of Scientific and Technical Information (OSTI)

DOE's STI Program and Products DOE's STI Program and Products Slide01 DOE's STI Program and Products Sharon Jordan Assistant Director for Program Integration CENDI Meeting May 5, 2010 DOE's STI Program and Products Slide02 Focus of DOE's STI Program Priority #1: * Create a centrally managed, authoritative collection of DOE STI for long-term use and access Priority #2: * Ensure worldwide scientific knowledge and discoveries are accessible to DOE researchers, thus accelerating the advancement of science DOE's STI Program and Products Slide03 Slide 3: DOE's Scientific Disciplines From A to Z (well, W) ADVANCED PROPULSION SYSTEMS APPLIED LIFE SCIENCES ASTRONOMY AND ASTROPHYSICS ATOMIC AND MOLECULAR PHYSICS BASIC BIOLOGICAL SCIENCES BIOMASS FUELS CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS COAL, LIGNITE, AND

430

Reply to comment | OSTI, US Dept of Energy, Office of Scientific and  

Office of Scientific and Technical Information (OSTI)

Reply to comment Reply to comment Slide03 Submitted by gibsone on Fri, 2013-08-30 07:28 FY2010-cendi-jordan Slide03 Slide 3: DOE's Scientific Disciplines From A to Z (well, W) ADVANCED PROPULSION SYSTEMS APPLIED LIFE SCIENCES ASTRONOMY AND ASTROPHYSICS ATOMIC AND MOLECULAR PHYSICS BASIC BIOLOGICAL SCIENCES BIOMASS FUELS CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS COAL, LIGNITE, AND PEAT CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY DIRECT ENERGY CONVERSION EFFECTS OF RADIATION AND OTHER POLLUTANTS ON BIOLOGICAL MATERIALS AND ORGANISMS ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION ENERGY PLANNING, POLICY, AND ECONOMY ENERGY STORAGE ENGINEERING ENVIRONMENTAL SCIENCES FOSSIL-FUELED POWER PLANTS GENERAL STUDIES OF NUCLEAR REACTORS GEOSCIENCES GEOTHERMAL ENERGY HYDRO ENERGY HYDROGEN

431

 

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

Origin and Method of Transportation, 2006 Origin and Method of Transportation, 2006 April 2008 2006 Changes in Coal Distribution Table Format and Data Sources The changes in the coal distribution table formats and data sources made in 2005 are carried over to the 2006 table except in several significant areas (See Note for 2005 changes). In 2005, EIA reported coal synfuel distributed to electric generating plants as a single national total. For its 2006 table, EIA used data from the EIA-3 survey to distribute synfuel to the electric generation sector on a state level, aggregated with all of the other coal (such as bituminous, subbituminous, and lignite coal) sent to electric generating plants. EIA supplemented the EIA-3 data by making follow-up contacts with the synfuel plants to

432

Microsoft PowerPoint - Proceedings Cover Sheets  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Gulf Coast Carbon Gulf Coast Carbon Center: Exploring Carbon Public Policy Initiatives for Texas Ian J. Duncan GCCC Vision Statement The GCCC seeks to impact global levels of GHG in the atmosphere by doing science and engineering studies that will support reduction of CO2 and methane emissions and enable the development of an economically viable, multifaceted, CO2 sequestration industry in the Gulf Coast GCCC Industry Partners KEY PUBLIC POLICY STAKEHOLDERS * Texas Legislature * State Agencies * NGO's * General Public * Power Generating Companies * Coal/Lignite Mining industry * Refineries * Chemical Industry * Cement Industry * CO2 EOR Industry * Pipeline operators PUBLIC POLICY PROJECT CLASS UT's LBJ SCHOOL Course Goal: To explore the notion ......."CO2 EOR can drive the development of infrastructure

433

NBP RFI: Communications Requirements | Department of Energy  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Cleco Corporation greatly appreciates the opportunity to provide Cleco Corporation greatly appreciates the opportunity to provide information to the Department of Energy (DOE) on the communications needs of utilities. Cleco is an energy services company based in central Louisiana, serving approximately 276,000 residential, commercial and industrial customers since 1934. Cleco manages over 3,000 megawatts of electric capacity through its regulated Cleco Power LLC and unregulated Cleco Midstream Resources LLC businesses, utilizing a diverse fuel mix of lignite, coal, petcoke and natural gas. With 1,300 employees, Cleco manages and operates 70 transmission substations connected via 1,300 miles of transmission lines, together feeding over 350 distribution substations, dispersed over approximately 7,000 square miles. NBP RFI: Communications Requirements

434

The First Coal Plants  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Coal Plants Coal Plants Nature Bulletin No. 329-A January 25, 1969 Forest Preserve District of Cook County George W. Dunne, President Roland F. Eisenbeis, Supt. of Conservation THE FIRST COAL PLANTS Coal has been called "the mainspring" of our civilization. You are probably familiar, in a general way, with the story of how it originated ages ago from beds of peat which were very slowly changed to coal; and how it became lignite or brown coal, sub-bituminous, bituminous, or anthracite coal, depending on bacterial and chemical changes in the peat, how much it was compressed under terrific pressure, and the amount of heat involved in the process. You also know that peat is formed by decaying vegetation in shallow clear fresh-water swamps or bogs, but it is difficult to find a simple description of the kinds of plants that, living and dying during different periods of the earth's history, created beds of peat which eventually became coal.

435

NETL: Gasification Systems - Power Systems Development Facility (PSDF)  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Power Systems Development Facility (PSDF) Power Systems Development Facility (PSDF) Project No.: DE-FC21-90MC25140 Power Systems Development Facility (PSDF) Project ID: DE-FC21-90MC25140 NETL Contact: Morgan Mosser (304) 285-4723 Organization: Southern Company Services, Inc. - Birmingham, AL Project Timeline: Start: 09/14/1990 End: 01/31/2009 Power Systems Development Facility The objectives of the work at the Power Systems Development Facility (PSDF) are two-fold; development of the Transport Gasifier for a wide range of US coals from high sodium lignite to Midwestern bituminous and provide a test platform to test various critical components that are likely to appear in future advanced coal-based power facilities producing power and fuels such as hydrogen with zero emissions. With regard to the development of the

436

Page not found | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

01 - 6410 of 29,416 results. 01 - 6410 of 29,416 results. Download CX-005044: Categorical Exclusion Determination ArmorBelt Single Point Gas Lift System for Stripper Wells CX(s) Applied: B3.7 Date: 01/19/2011 Location(s): Tulsa County, Oklahoma Office(s): Fossil Energy, National Energy Technology Laboratory http://energy.gov/nepa/downloads/cx-005044-categorical-exclusion-determination Download CX-005045: Categorical Exclusion Determination Subtask 2.14 ? Beneficial Use of Carbon Dioxide for North Dakota Lignite-Fired Plants CX(s) Applied: A9, B3.6 Date: 01/19/2011 Location(s): Grand Forks, North Dakota Office(s): Fossil Energy, National Energy Technology Laboratory http://energy.gov/nepa/downloads/cx-005045-categorical-exclusion-determination Download CX-005046: Categorical Exclusion Determination

437

Monthly Flash Estimates of Electric Power Data  

Gasoline and Diesel Fuel Update (EIA)

9/20/2011 9/20/2011 Table of Contents 1. Commentary Page 1 2. Key Indicators of Generation, Consumption & Stocks Page 2 3. Month-to-Month Comparisons: Generation, Consumption and Stocks (Total) Page 3 4. Net Generation Trends Page 4 5. Fossil Fuel Consumption Trends Page 5 6. Fossil Fuel Stock Trends Page 6 7. Average Number of Days of Burn Non-Lignite Coal Page 7 8. Month-to-Month Comparisons: Electric Power Retail Sales and Average Prices Page 8 9. Retail Sales Trends Page 9 10. Average Retail Price Trends Page 10 11. Heating and Cooling Degree Days Page 11 12. Documentation Page 12 Monthly Flash Estimates of Data for: July 2011 Section 1. Commentary Electric Power Data The contiguous United States experienced temperatures

438

Gasification Â… Program Overview  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

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

439

Drilling Waste Management Fact Sheet: Using Muds and Additives with Lower  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Using Muds & Additives with Lower Impacts Using Muds & Additives with Lower Impacts Fact Sheet - Using Muds and Additives with Lower Environmental Impacts Introduction to Drilling Muds Drilling fluids or muds are made up of a base fluid (water, diesel or mineral oil, or a synthetic compound), weighting agents (most frequently barium sulfate [barite] is used), bentonite clay to help remove cuttings from the well and to form a filter cake on the walls of the hole, lignosulfonates and lignites to keep the mud in a fluid state, and various additives that serve specific functions. Mud Additives click to view larger image Mud Additives Historically, the drilling industry has used primarily water-based muds (WBMs) because they are inexpensive. The used mud and cuttings from wells drilled with WBMs can be readily disposed of onsite at most onshore

440

NETL: Mercury Emissions Control Technologies - Field Demonstration of  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Field Demonstration of Enhanced Sorbent Injection for Mercury Control Field Demonstration of Enhanced Sorbent Injection for Mercury Control ALSTOM will test their proprietary activated carbon-based sorbent which promotes oxidation and capture of mercury via preparation with chemical additives. ALSTOM proposes to test the sorbents at three utilities burning different coals, PacificCorpÂ’s Dave Johnston (PRB), Basin ElectricÂ’s Leland Olds (North Dakota Lignite) and Reliant EnergyÂ’s Portland Unit (bituminous). Other project partners include Energy and Environmental Research Center, North Dakota Industrial Commission and Minnkota Power who will be a non-host utility participant. Upon completion of this two year project, ALSTOM will demonstrate the capability of controlling mercury emissions from units equipped with electrostatic precipitators, a configuration representing approximately 75% of the existing units.

Note: This page contains sample records for the topic "bitu subbitu lignite" from the National Library of EnergyBeta (NLEBeta).
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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

Hydrocarbon/CO{sub 2}/water multiphase equilibrium separations. Final report, July 1, 1993--September 30, 1995  

SciTech Connect (OSTI)

Hydrocarbon (HC)/water and HC/CO{sub 2}/water systems are frequently found in petroleum recovery processes, petroleum refining, and gasification of coals, lignites and tar sands. Objective is to provide techniques for analyzing these mixtures at pressures up to 10,000 psia and temperatures up to 500 F; two laboratory apparatus were developed for this purpose. Three-phase separation data are obtained for mixtures of pure n-alkanes (C{sub 3} to C{sub 20}), CO{sub 2}, and water; and for mixtures of pseudocomponents of crude oils and water. Crude oils are characterized using a modified Whitson`s method. Rigorous equation-of-state computer simulators were developed and validated with experimental data; they are essential for reservoir engineering and enhanced oil recovery.

Wu, C.H.; Eubank, P.T.; Barrufet, M.A. [Texas A and M Univ., College Station, TX (United States)

1995-12-31T23:59:59.000Z

442

Adsorption and Diffusion of Alcohol Vapors by Argonne Premium Coals  

Science Journals Connector (OSTI)

Adsorption and Diffusion of Alcohol Vapors by Argonne Premium Coals ... Adsorption of methanol, ethanol, n-propanol, and n-butanol by Pocahontas No. 3, Upper Freeport, Illinois No. 6, and Beulah-Zap Argonne premium coals was investigated to clarify the effect of alkyl group bulk on adsorption and to evaluate the micropore and cross-linked structure of coals. ... Coals are thought to have a large surface area with an interconnected network of slitlike pores.1 However, Larsen et al.2 measured the adsorption of various gases on five Argonne Premium coals and, except for Beulah-Zap lignite, found that the very steep dependence of BET surface area was related to the molecular volume of the gas. ...

Toshimasa Takanohashi; Yuki Terao; Takahiro Yoshida; Masashi Iino

2000-06-17T23:59:59.000Z

443

Mechanical engineers' handbook, energy and power. 3rd ed.  

SciTech Connect (OSTI)

In addition to chapters on thermophysical properties of fluids, fundamentals of fluid mechanics, thermodynamics, heat transfer, combustion, and furnaces, Book 4 of the Handbook features coverage of both conventional (gaseous and liquid fuels, coal, and nuclear) and alternative (solar, geothermal, and fuel cells) energy sources, plus chapters on power machinery, refrigeration and cryogenics, environmental issues, and thermal systems optimization. Much of the material in this book is new or extensively revised, including coverage of such topics as: Heat pipes; Wind turbines; Fuel cells; Thermal systems optimization; Combustion; Fans, blowers, compressors, and pumps; Indoor environmental control; and Fluid power. Chapters of particular interest are: Combustion by Eric Eddings; Furnaces by Carroll Cone; Gaseous fuels by Richard J. Reed; Coals, lignite, peat by James Keppeler; and Air pollution-control technologies by C.A. Miller.

Myer Kutz (ed.)

2005-12-15T23:59:59.000Z

444

Cooperative research in coal liquefaction. Final report, May 1, 1992--April 30, 1993  

SciTech Connect (OSTI)

Research on sulfate and metal (Mo, Sn) promoted Fe{sub 2}O{sub 3} catalysts in the current year focused on optimization of conditions. Parameters varied included temperature, solvent, solvent-to-coal ratio, and the effect of presulfiding versus in situ sulfiding. Oil yields were found to increase approximately proportionately with both temperature and solvent-to-coal ratio. The donor solvent, tetralin, proved to give better total conversion and oil yields than either 1-methylnaphthalene or Wilsonville recycle oil. A significant enhancement of both total liquefaction yields and oil yields from lignites and subbituminous coals has been achieved by incorporating iron into the coal matrix by cation exchange. A study has been conducted on the synthesis of iron, molybdenum, and tungsten catalysts using a laser pyrolysis technique.

Huffman, G.P. [ed.

1996-03-01T23:59:59.000Z

445

Increase of unit efficiency by improved waste heat recovery  

SciTech Connect (OSTI)

For coal-fired power plants with flue gas desulfurization by wet scrubbing and desulfurized exhaust gas discharge via cooling tower, a further improvement of new power plant efficiency is possible by exhaust gas heat recovery. The waste heat of exhaust gas is extracted in a flue gas cooler before the wet scrubber and recovered for combustion air and/or feedwater heating by either direct or indirect coupling of heat transfer. Different process configurations for heat recovery system are described and evaluated with regard to net unit improvement. For unite firing bituminous coal an increase of net unit efficiency of 0.25 to 0.7 percentage points and for lignite 0.7 to 1.6 percentage points can be realized depending on the process configurations of the heat recovery systems.

Bauer, G.; Lankes, F.

1998-07-01T23:59:59.000Z

446

Advanced High-Temperature, High-Pressure Transport Reactor Gasification  

SciTech Connect (OSTI)

The U.S. Department of Energy (DOE) National Energy Technology Laboratory Office of Coal and Environmental Systems has as its mission to develop advanced gasification-based technologies for affordable, efficient, zero-emission power generation. These advanced power systems, which are expected to produce near-zero pollutants, are an integral part of DOE's Vision 21 Program. DOE has also been developing advanced gasification systems that lower the capital and operating costs of producing syngas for chemical production. A transport reactor has shown potential to be a low-cost syngas producer compared to other gasification systems since its high-throughput-per-unit cross-sectional area reduces capital costs. This work directly supports the Power Systems Development Facility utilizing the KBR transport reactor located at the Southern Company Services Wilsonville, Alabama, site. Over 2800 hours of operation on 11 different coals ranging from bituminous to lignite along with a petroleum coke has been completed to date in the pilot-scale transport reactor development unit (TRDU) at the Energy & Environmental Research Center (EERC). The EERC has established an extensive database on the operation of these various fuels in both air-blown and oxygen-blown modes utilizing a pilot-scale transport reactor gasifier. This database has been useful in determining the effectiveness of design changes on an advanced transport reactor gasifier and for determining the performance of various feedstocks in a transport reactor. The effects of different fuel types on both gasifier performance and the operation of the hot-gas filter system have been determined. It has been demonstrated that corrected fuel gas heating values ranging from 90 to 130 Btu/scf have been achieved in air-blown mode, while heating values up to 230 Btu/scf on a dry basis have been achieved in oxygen-blown mode. Carbon conversions up to 95% have also been obtained and are highly dependent on the oxygen-coal ratio. Higher-reactivity (low-rank) coals appear to perform better in a transport reactor than the less reactive bituminous coals. Factors that affect TRDU product gas quality appear to be coal type, temperature, and air/coal ratios. Testing with a higher-ash, high-moisture, low-rank coal from the Red Hills Mine of the Mississippi Lignite Mining Company has recently been completed. Testing with the lignite coal generated a fuel gas with acceptable heating value and a high carbon conversion, although some drying of the high-moisture lignite was required before coal-feeding problems were resolved. No ash deposition or bed material agglomeration issues were encountered with this fuel. In order to better understand the coal devolatilization and cracking chemistry occurring in the riser of the transport reactor, gas and solid sampling directly from the riser and the filter outlet has been accomplished. This was done using a baseline Powder River Basin subbituminous coal from the Peabody Energy North Antelope Rochelle Mine near Gillette, Wyoming.

Michael Swanson; Daniel Laudal

2008-03-31T23:59:59.000Z

447

Chemical composition and some trace element contents in coals and coal ash from Tamnava-Zapadno Polje Coal Field, Serbia  

SciTech Connect (OSTI)

The chemical compositions and trace element contents (Zn, Cu, Co, Cr, Ni, Pb, Cd, As, B, Hg, Sr, Se, Be, Ba, Mn, Th, V, U) in coal and coal ash samples from Tamnava-Zapadno Polje coal field in Serbia were studied. The coal from this field belongs to lignite. This high volatility coal has high moisture and low S contents, moderate ash yield, and high calorific value. The coal ash is abundant in alumosilicates. Many trace elements such as Ni > Cd > Cr > B > As > Cu > Co > Pb > V > Zn > Mn in the coal and Ni > Cr > As > B > Cu > Co = Pb > V > Zn > Mn in the coal ash are enriched in comparison with Clarke concentrations.

Vukasinovic-Pesic, V.; Rajakovic, L.J. [University of Montenegro, Podgorica (Montenegro)

2009-07-01T23:59:59.000Z

448

Evaluation and demonstration of the chemically active fluid bed. Final report May 75-Jul 81  

SciTech Connect (OSTI)

The report gives results of the operation of a 17-MW Chemically Active Fluid Bed (CAFB) demonstration unit, retrofitted to a natural gas boiler. The CAFB process gasifies high-sulfur, high-metals-content liquid and solid fuels. Residual oil, lignite, and bituminous coal were gasified separately or together between November 1979 and June 1981. Design and operational areas where upgrading would be beneficial were identified. Continuous monitors were used to measure boiler flue gas emissions of SO2, NOx, CO, oxygen, CO2, and opacity. Periodic manual emission tests were conducted for particulate, SO2, and NOx, using EPA reference methods. Emissions of these three criteria pollutants were generally lower than New Source Performance Standards for utility boilers, although occasionally excessive particulate and SO2 emissions were observed. NOx emissions were consistently lower than those from natural gas combustion. Results of detailed chemical analyses and biological assays are reported.

Sommer, R.E.; Werner, A.S.; Kowszun, Z.

1984-02-01T23:59:59.000Z

449

Evaluation of sulfur-reducing microorganisms for organic desulfurization. Final technical report, September 1, 1990--August 31, 1991  

SciTech Connect (OSTI)

Because of substantial portion of the sulfur in Illinois coal is organic, microbial desulfurization of sulfidic and thiophenic functionalities could hold great potential for completing pyritic sulfur removal. We are testing the hypothesis that organic sulfur can be reductively removed as H{sub 2}S through the activities of anaerobic microorganisms. Our objectives for this year include the following: (1) To obtain cultures that will reductively desulfurize thiophenic model compounds. In addition to crude oil enrichments begun last year, we sampled municipal sewage sludge. (2) To continue to work toward optimizing the activity of the DBDS-reducing cultures obtained during the previous year. (3) To expand coal desulfurization work to include other coals including Illinois Basin Coal 101 and a North Dakota lignite, which might be more susceptible to the dibenzyldisulfide reducing cultures due to its lower rank. (4) To address the problem of sulfide sorption, by investigating the sorption capacity of coals in addition to Illinois Basin Coal 108.

Miller, K.W.

1991-12-31T23:59:59.000Z

450

Evaluation of sulfur-reducing microorganisms for organic desulfurization. [Pyrococcus furiosus  

SciTech Connect (OSTI)

Because of substantial portion of the sulfur in Illinois coal is organic, microbial desulfurization of sulfidic and thiophenic functionalities could hold great potential for completing pyritic sulfur removal. We are testing the hypothesis that organic sulfur can be reductively removed as H{sub 2}S through the activities of anaerobic microorganisms. Our objectives for this year include the following: (1) To obtain cultures that will reductively desulfurize thiophenic model compounds. In addition to crude oil enrichments begun last year, we sampled municipal sewage sludge. (2) To continue to work toward optimizing the activity of the DBDS-reducing cultures obtained during the previous year. (3) To expand coal desulfurization work to include other coals including Illinois Basin Coal 101 and a North Dakota lignite, which might be more susceptible to the dibenzyldisulfide reducing cultures due to its lower rank. (4) To address the problem of sulfide sorption, by investigating the sorption capacity of coals in addition to Illinois Basin Coal 108.

Miller, K.W.

1991-01-01T23:59:59.000Z

451

EA-1616: National Carbon Research Center Project at Southern Company Services' Power Systems Development Facility near Wilsonville, Alabama  

Broader source: Energy.gov [DOE]

This EA evaluates and updates the potential environmental impacts of DOE’s proposed continued operations of the NCCC Project at the PSDF plant. The NCCC is designed to test and evaluate carbon dioxide (CO2) control technologies for power generation facilities, including CO2 capture solvents and sorbents, mass-transfer devices, lower cost water-gas shift reactors, and scaled-up membrane technologies. Additionally, the NCCC evaluates methods to integrate CO2 capture technologies with other coal-based power plant systems by testing both pre-combustion and post-combustion technologies. The NCCC provides the capability to test these systems under a wide range of fuels, including bituminous and sub-bituminous coals, lignites and biomass/coal mixtures. The goal of the NCCC project is to accelerate the development, optimization, and commercialization of viable CO2 control technologies.

452

USE OF COAL DRYING TO REDUCE WATER CONSUMED IN PULVERIZED COAL POWER PLANTS  

SciTech Connect (OSTI)

This is the ninth Quarterly Report for this project. The background and technical justification for the project are described, including potential benefits of reducing fuel moisture using power plant waste heat, prior to firing the coal in a pulverized coal boiler. During this last Quarter, comparative analyses were performed for lignite and PRB coals to determine how unit performance varies with coal product moisture. Results are given showing how the coal product moisture level and coal rank affect parameters such as boiler efficiency, station service power needed for fans and pulverizers and net unit heat rate. Results are also given for the effects of coal drying on cooling tower makeup water and comparisons are made between makeup water savings for various times of the year.

Edward Levy; Nenad Sarunac; Harun Bilirgen; Wei Zhang

2005-04-01T23:59:59.000Z

453

Process simulation of the transport gasifier  

Science Journals Connector (OSTI)

Abstract The transport gasifier manufactured by Kellogg, Brown and Root (KBR) is reportedly capable of economically converting low rank coal (e.g. lignite) to syngas for the production of synthetic chemicals, fuels and energy. However no process simulation of the KBR transport gasifier yet exists in the public domain literature. In this work three alternative process simulation models of the transport gasifier were developed using a commercial process simulator combined with Excel/VBA routines. The first model determined gasification products on the basis of minimum Gibbs energy. The second model used pseudo-equilibrium approach and the third model used kinetic expressions. The simulation models were validated with real process data. The pseudo-equilibrium model was best able to replicate the data with reasonable process assumptions.

Christopher J. Arthur; Muhammad Tajammal Munir; Brent R. Young; Wei Yu

2014-01-01T23:59:59.000Z

454

Corrosion of silicon carbide hot gas filter candles in gasification environment  

Science Journals Connector (OSTI)

Abstract Reliable cleaning of the fuel gas is required to meet the environmental regulations and to prevent corrosion and erosion of downstream components. The aggressive process environment in biomass-gasification power generation systems or in biofuels production systems can cause corrosion in ceramic hot gas filter candles used to clean the fuel gas. Therefore, to improve the reliability and durability of filters, the influence of steam, ash, and alkaline (earth) metals on the corrosion processes was studied for silicon carbide filter candles fabricated by Pall Schumacher. Exposures with biomass and lignite ashes caused a macroscopically expansion as well as microstructural effects that were analysed by X-ray diffraction (XRD) and energy dispersive X-ray (EDX) spectroscopy. All effects are discussed and it is shown that the employment of silicon carbide filter candles in water vapour containing, alkali-rich gasification environment at high temperature is problematic.

Sarah Schaafhausen; Elena Yazhenskikh; Steffen Heidenreich; Michael Müller

2014-01-01T23:59:59.000Z

455

Development of methods to predict agglomeration and deposition in fluidized-bed combustion systems (FBCS). Topical report  

SciTech Connect (OSTI)

The successful design and operation of advanced combustion systems require the ability to control and mitigate ash-related problems. The major ash-related problems are slag flow control, slag attack on the refractory, ash deposition on heat-transfer surfaces, corrosion and erosion of equipment materials, and emissions control. These problems are the result of physical and chemical interactions of the fuels, bed materials, and system components. The interactions that take place and ultimately control ash behavior in fluidized-bed combustion (FBC) systems are controlled by the abundance and association of the inorganic components in coal and by the system conditions. Because of the complexity of the materials and processes involved, the design and operations engineer often lacks the information needed to predict ash behavior and reduce ash-related problems. The deposition of ashes from the fluidized bed combustion of lignite and petroleum coke is described in this paper.

Mann, M.D.; Henderson, A.K.; Swanson, M.L.; Allan, S.E.

1996-02-01T23:59:59.000Z

456

Fluidized bed combustion of low-rank coals: (Task 4. 1)  

SciTech Connect (OSTI)

Results obtained in the second year of a second three-year program are described. Two 1000-hour tests were completed to evaluate corrosion/erosion effects on boiler materials. The coals tested were Kentucky {number sign}9 from the Pyro mine and Gibbons Creek, Texas, lignite. Of the variety of stainless and carbon steels tested, several meet commercial requirements despite a wide range in ash compositions of the test coals. In Fluidized Bed Combustion characterization, the River King Illinois {number sign}6 and Jacobs Ranch, Wyoming, subbituminous coals were extensively tested under a wide range of operating conditions and with and without limestone addition. The Jacobs Ranch coal was also successfully and satisfactorily fired as a coal/water fuel slurry. The low-rank coal slurry provided excellent ignition and combustion efficiency, and without ash agglomeration or accumulation. Continued progress was made in expanding the data base on FBC of low- rank coals. 11 refs., 59 figs., 22 tabs.

Mann, M.D.; Hajicek, D.R.; Zobeck, B.J.; Kalmanovitch, D.P.; Potas, T.A.

1988-04-01T23:59:59.000Z

457

Geological development, origin, and energy and mineral resources of Williston Basin, North Dakota  

SciTech Connect (OSTI)

The Williston Basin of North Dakota, Montana, South Dakota, and S.-Central Canada (Manitoba and Saskatchewan) is a major producer of oil and gas, lignite, and potash. Located on the western periphery of the Phanerozoic North American Craton, the Williston Basin has undergone only relatively mild tectonic distortion during Phanerozoic time. This distortion is related largely to movement of Precambrian basement blocks. Oil exploration and development in the US portion of the Williston basin from 1972 to present have given impetus to restudy of basin evolution and geologic controls for energy resource locations. Major structures in the basin, and the basin itself, may result from left-lateral shear along the Colorado-Wyoming and Eromberg zones during pre-Phanerozoic time. Deeper drilling in the basin has established several major new structures with indications of others.

Gerhard, L.C.; Anderson, S.B.; Lefever, J.A.; Carlson, C.G.

1982-05-01T23:59:59.000Z

458

Production of jet fuels from coal-derived liquids. Volume 10. Jet fuels production by-products, utility, and sulfur-emissions control integration study. Interim report, 1 May 1988-1 April 1989  

SciTech Connect (OSTI)

In September 1986, the Fuels Branch of the Aero Propulsion Laboratory at Wright-Patterson Air Force Base, Ohio, began an investigation of the potential of jet-fuel production from the liquid by-product streams produced by the gasification of lignite at the Great Plains Gasification Plant (GPGP) in Beulah, North Dakota. Funding has been provided by the Department of Energy (DOE) Pittsburgh Energy Technology Center (PETC) to administer the experimental portion of this effort. This document reports the results of the effort by Burns and Roe Services Corporation/Science Applications International Corporation (BRSC/SAIC) to evaluate the impact of integrating Jet Fuel and/or Chemical Production Facilities with the Great Plains Gasification Plant.

Rossi, R.J.

1989-06-01T23:59:59.000Z

459

Production of jet fuels from coal-derived liquids. Volume 5. Recovery of benzene/benzene plus phenol from the Great Pplains Gasification Plant crude phenol stream. Interim report, September 1987-February 1988  

SciTech Connect (OSTI)

In September 1986, the Fuels Branch of the Aero Propulsion Laboratory at Wright-Patterson Air Force Base, Ohio, began an investigation of the potential for production of jet fuels from the liquid by-product streams produced by the gasification of lignite at the Great Plains Gasification Plant located in Buelah, North Dakota. Funding was provided to the U.S. Department of Energy (DOE) Pittsburgh Energy Technology Center (PETC) to administer the experimental portion of this effort. This report details the program with Hydrocarbon Research, Inc., a subcontractor to Burns and Roe Services Corporation, who, as a subcontractor to DOE, investigated the potential of producing benzene or benzene plus phenol from the crude phenol stream.

Harris, E.C.

1988-05-01T23:59:59.000Z

460

Production of jet fuels from coal-derived liquids. Volume 4. GPGP jet-fuels production program-feed analyses compilation and review. Interim report, October 1987-January 1988  

SciTech Connect (OSTI)

In September 1986, the Fuels Branch of the Aero Propulsion Laboratory at Wright-Patterson Air Force Base, Ohio, began an investigation of the potential of jet-fuel production from the liquid by-product streams produced by the gasification of lignite at the Great Plains Gasification Plant (GPGP) in Beulah, North Dakota. Funding was provided to the Department of Energy (DOE) Pittsburgh Energy Technology Center (PETC) to administer the experimental portion of this effort. This document reports the results of the effort by Burns and Roe Services Corporation/Science Applications International Corporation (BRSC/SAIC) to compile and review physical and chemical characterization data for the GPGP by-product liquids. This report describes the relative reliability of the various characterization data and indicates where specific limitations exist.

Rossi, R.J.

1988-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "bitu subbitu lignite" 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

Production of jet fuels from coal-derived liquids. Volume 7. GPGP jet-fuels production program. Evaluation of technical uncertainties for producing jet fuels from liquid by-products of the Great Plains gasification plant. Interim report, 2 October 1987-30 September 1988  

SciTech Connect (OSTI)

In September 1986, the Fuels Branch of the Aero Propulsion Laboratory at Wright-Patterson Air Force Base, Ohio, began an investigation of the potential of jet-fuel production from the liquid by-product streams produced by the gasification of lignite at the Great Plains Gasification Plant (GPGP) in Beulah, North Dakota. Funding was provided by the Department of Energy (DOE) Pittsburgh Energy Technology Center (PETC) to administer the experimental portion of this effort. This document reports the results of the effort by Burns and Roe Services Corporation/Science Applications International Corporation (BRSC/SAIC) to analyze GPGP operations and develop correlations for the liquid by-products and plant operating factors such as coal feed rate and coal characteristics.

Fraser, M.D.; Rossi, R.J.; Wan, E.I.

1989-01-01T23:59:59.000Z

462

Development of biological coal gasification (MicGas process): 13th Quarterly report, [July 1--September 30, 1993  

SciTech Connect (OSTI)

In examining methods for enhancing the biomethanation of TxL, several experiments were conducted to study the mechanisms of lowering the pH during biomethanation of Texas lignite (TxL) at higher solids loadings. Results indicated that: Treatment of TxL with different pH solutions did not influence the biomethanation process; The decrease in methane production at higher solids loadings still needs further investigations; Anaerobic conditions containing deoxygenated nitrogen:carbon dioxide provide better methanation of TxL; The most promising combination between the isolates from Mic-1 and Mic-4 was found to be combination D (KS14RMK8-1458); The KS14RMK8 shows the highest accumulation of acetate in the cell-free culture broth from this consortium.

Not Available

1993-10-28T23:59:59.000Z

463

Heterogeneous Reburning By Mixed Fuels  

SciTech Connect (OSTI)

Recent studies of heterogeneous reburning, i.e., reburning involving a coal-derived char, have elucidated its variables, kinetics and mechanisms that are valuable to the development of a highly efficient reburning process. Young lignite chars contain catalysts that not only reduce NO, but they also reduce HCN that is an important intermediate that recycles to NO in the burnout zone. Gaseous CO scavenges the surface oxides that are formed during NO reduction, regenerating the active sites on the char surface. Based on this mechanistic information, cost-effective mixed fuels containing these multiple features has been designed and tested in a simulated reburning apparatus. Remarkably high reduction of NO and HCN has been observed and it is anticipated that mixed fuel will remove 85% of NO in a three-stage reburning process.

Anderson Hall

2009-03-31T23:59:59.000Z

464

Microsoft Word - cvr-sht.doc  

Broader source: Energy.gov (indexed) [DOE]

S-1 S-1 SUMMARY The U.S. Department of Energy (DOE) has prepared this environmental impact statement (EIS) to eva- luate the potential impacts of a power generation project proposed by Mississippi Power Company in Kemper County, east-central Mississippi. The proposed power plant would demonstrate an advanced integrated gasifica- tion combined-cycle (IGCC) power generation system at a commercial scale. The facility would convert Mississippi lignite mined by North American Coal Corporation (NACC) into a synthesis gas (syngas), which would fuel the plant's combustion turbine (CT) gene- rating units. The new power plant would be capable of generating 582 megawatts (MW) (nominal capacity) of electricity while reduc- ing emissions of carbon dioxide (CO 2 ), sulfur

465

SAS Output  

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

3. Receipts and Quality of Coal by Rank Delivered for Electricity Generation: Independent Power Producers by State, 2012 3. Receipts and Quality of Coal by Rank Delivered for Electricity Generation: Independent Power Producers by State, 2012 Bituminous Subbituminous Lignite Census Division and State Receipts (Thousand Tons) Average Sulfur Percent by Weight Average Ash Percent by Weight Receipts (Thousand Tons) Average Sulfur Percent by Weight Average Ash Percent by Weight Receipts (Thousand Tons) Average Sulfur Percent by Weight Average Ash Percent by Weight New England 732 0.87 10.5 41 0.09 2.0 0 -- -- Connecticut 0 -- -- 41 0.09 2.0 0 -- -- Maine 32 0.80 7.0 0 -- -- 0 -- -- Massachusetts 700 0.88 10.7 0 -- -- 0 -- -- New Hampshire 0 -- -- 0 -- -- 0 -- -- Rhode Island 0 -- -- 0 -- -- 0 -- -- Vermont 0 -- -- 0 -- -- 0 -- --

466

NETL: Gasifipedia  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

SNG from Coal: Process & Commercialization SNG from Coal: Process & Commercialization The Great Plains Synfuels Plant in Beulah, North Dakota source: Dakota Gasification Great Plains Synfuels Plant The Great Plains Synfuels Plant (GPSP) in Beulah, North Dakota has been in operation producing synthetic natural gas (SNG) from lignite coal for 25 years and remains the only coal-to-SNG facility in the United States. In addition to the production of SNG, the plant also produces high purity carbon dioxide (CO2), which is distributed through a pipeline to end users in Canada for enhanced oil recovery (EOR) operations. The plant also produces and sells anhydrous ammonia, as well as the following byproducts: ammonium sulfate, krypton, xenon, dephenolized cresylic acid, liquid nitrogen, phenol, and naphtha, most of the last of which is burned as fuel

467

What's InsIde?  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Regional Partner Launches Drilling Test in Regional Partner Launches Drilling Test in DOE's Carbon Sequestration Program." The Plains CO 2 Reduction Partnership (PCOR), one of the seven Department of Energy (DOE) Regional Carbon Sequestration Partnerships, has begun a small-scale geologic field test as part of their validation phase efforts which will focus on carbon dioxide (CO 2 ) storage in a lignite seam in Burke County, North Dakota. The PCOR Partnership, managed by the University of North Dakota's Energy and Environmental Research Center, will partner with Eagle Operating Inc. of Kenmare, North Dakota to conduct the two-year, two-phased test. During phase one, data about the coal seam will be collected in order to evaluate the

468

 

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

Domestic Distribution of U.S. Coal by Destination State, Consumer, Origin and Method of Transportation, 2007 December 2008 2007 Changes in Coal Distribution Table Format and Data Sources The changes in the coal distribution data sources made in 2006 are carried over to the 2007 tables. As in 2006, EIA used data from the EIA-3 survey to distribute synfuel to the electric generation sector on a state level, aggregated with all of the other coal (such as bituminous, subbituminous, and lignite coal) sent to electric generating plants. EIA supplemented the EIA-3 data with previously collected information to determine the mode of transportation from the synfuel plant to the electric generating consumer, which was not reported on the EIA-3A survey form. Although not contained in the EIA-6A

469

Slide 1  

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

Cost and Economic Impacts of Cost and Economic Impacts of Pending EPA Regulations Bruce Braine Vice President, Strategic Policy Analysis EIA Energy Conference April 2011 2 AEP's Generation Fleet ~39,000 MW Capacity ~80% of coal is in AEP-East Coal/Lignite 66% Gas/Oil 22% Nuclear 6% Pumped Storage/ Hydro/Wind 6% 5.2 million customers in 11 states Industry-leading size and scale of assets: Asset Size Industry Rank Domestic Generation ~39,000 MW # 2 Transmission ~39,000 miles # 1 Distribution ~214,000 miles # 1 AEP - Background 3 AEP Already Has Substantially Reduced SO 2 & NOx Emissions * Since 1980 AEP"s TOTAL generating fleet has reduced: *SO 2 emissions by over 77% *NOx emissions by ~80% 0.0 0.4 0.8 1.2 1.6 2.0 1980 1985 1990 1995 2000 2005 2010 SO2

470

 

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

6 6 April 2008 2006 Changes in Coal Distribution Table Format and Data Sources The changes in the coal distribution table formats and data sources made in 2005 are carried over to the 2006 table except in several significant areas (See Note for 2005 changes). In 2005, EIA reported coal synfuel distributed to electric generating plants as a single national total. For its 2006 table, EIA used data from the EIA-3 survey to distribute synfuel to the electric generation sector on a state level, aggregated with all of the other coal (such as bituminous, subbituminous, and lignite coal) sent to electric generating plants. EIA supplemented the EIA-3 data by making follow-up contacts with the synfuel plants to determine the mode of transportation from the synfuel plant to the electric generating

471

Blending high sulfer coal with refuse derived fuel to make SO{sub 2} compliant slurry fuels  

SciTech Connect (OSTI)

The need for a better method of disposing of the international community`s garbage hardly needs emphasizing. In 1993, the United States alone generated approximately 207 million ton per year of Municipal Solid Waste (MSW), with 62% landfilled, 220/6 recycled, and 16% combusted for energy recovery. Despite strenuous efforts to make these disposal methods meet present needs, the cost of disposal is rising dramatically. Concurrently, the Clean Air Act Amendments (CAAA) of 1990 have severely restricted the SO{sub 2} emissions from coal fired boilers. Medium and high sulfur coals will not comply with the Phase II CAAA regulation limit of 1.2 lb SO{sub 2}/MM Btu, without advanced coal cleaning technologies or flue gas desulfurization, including the majority of the North Dakota lignite reserves. Utility power plants have attempted to burn refuse derived fuel (RDF), a heterogeneous solid fuel produced from MSW, with coal in utility scale boilers (generally referred to as co-firing). Co-firing of RDF with coal has been attempted in sixteen different boilers, five commercially. While lower SO{sub 2} emissions provided the impetus, co-firing RDF with coal suffered from several disadvantages including increased solids handling, increased excess air requirements, higher HCI, CO, NO{sub x} and chlorinated organic emissions, increased slag formation in the boiler, and higher fly ash resistivity. Currently, only two of the sixteen boilers are still regularly used to co-fire RDF. The overall objective of this research program was to assess the feasibility of blending RDF with lignite coal to form SO{sub 2} Compliant slurry fuels using EnerTech`s SlurryCarb{trademark} process. In particular, the objective was to overcome the difficulties of conventional co-firing. Blended slurry fuels were produced with the Energy & Environmental Research Center`s (EERC) bench-scale autoclave and were combusted in a pressurized fluidized-bed reactor (PFBR).

Klosky, M. [EnerTech Environmental, Inc., Atlanta, GA (United States); Anderson, C. [Energy & Environmental Research Center, Grand Forks, ND (United States)

1995-12-31T23:59:59.000Z

472

Upgrading of low-rank coals for conventional and advanced combustion systems  

SciTech Connect (OSTI)

Low-rank coals, subbituminous, lignitic, and brown coals, have a ubiquitous presence in the world, being found in all continents. Close to half of the world`s estimated coal resources are low- rank coals. Many countries have no alternative economic source of energy. In the lower 48 states of the United States, there are 220 billion tons of economically recoverable reserves of lignite and subbituminous coal. Add to this quantity 5 trillion tons of predominantly subbituminous coal in Alaska, and the combined amount represents the largest supply of the lowest-cost fuels available for generating electric power in the United States. However, to use these coals cost-effectively and in an environmentally acceptable way, it is imperative that their properties and combustion/gasification behavior be well understood. The Energy and Environmental Research Center (EERC) takes a cradle-to-grave approach (i.e., mining, precleaning, combustion/gasification, postcleaning, and reuse and disposal of residues) for all aspects of coal processing and utilization. The environmental impact of these activities must be matched with the appropriate technologies. Experience over many years has shown that variations in coal and ash properties have a critical impact on design, reliability and efficiency of operation, and environmental compliance when low-rank coals are burned in conventional systems. This chapter reviews the significant technical issues of beneficiation, which includes reduction in moisture as well as ash (including sulfur), in relation to low-rank coal properties and their impact on conventional and advanced power systems. Finally, the development and utilization of low-rank coal resources are briefly discussed in view of policy, economic, and strategic issues.

Young, B.C.; Musich, M.A.; Jones, M.L.

1993-12-31T23:59:59.000Z

473

Co-pyrolysis of low rank coals and biomass: Product distributions  

SciTech Connect (OSTI)

Pyrolysis and gasification of combined low rank coal and biomass feeds are the subject of much study in an effort to mitigate the production of green house gases from integrated gasification combined cycle (IGCC) systems. While co-feeding has the potential to reduce the net carbon footprint of commercial gasification operations, the effects of co-feeding on kinetics and product distributions requires study to ensure the success of this strategy. Southern yellow pine was pyrolyzed in a semi-batch type drop tube reactor with either Powder River Basin sub-bituminous coal or Mississippi lignite at several temperatures and feed ratios. Product gas composition of expected primary constituents (CO, CO{sub 2}, CH{sub 4}, H{sub 2}, H{sub 2}O, and C{sub 2}H{sub 4}) was determined by in-situ mass spectrometry while minor gaseous constituents were determined using a GC-MS. Product distributions are fit to linear functions of temperature, and quadratic functions of biomass fraction, for use in computational co-pyrolysis simulations. The results are shown to yield significant nonlinearities, particularly at higher temperatures and for lower ranked coals. The co-pyrolysis product distributions evolve more tar, and less char, CH{sub 4}, and C{sub 2}H{sub 4}, than an additive pyrolysis process would suggest. For lignite co-pyrolysis, CO and H{sub 2} production are also reduced. The data suggests that evolution of hydrogen from rapid pyrolysis of biomass prevents the crosslinking of fragmented aromatic structures during coal pyrolysis to produce tar, rather than secondary char and light gases. Finally, it is shown that, for the two coal types tested, co-pyrolysis synergies are more significant as coal rank decreases, likely because the initial structure in these coals contains larger pores and smaller clusters of aromatic structures which are more readily retained as tar in rapid co-pyrolysis.

Soncini, Ryan M.; Means, Nicholas C.; Weiland, Nathan T.

2013-10-01T23:59:59.000Z

474

Center for Renewable Energy Science and Technology  

SciTech Connect (OSTI)

The CREST research team conducted research that optimized catalysts used for the conversion of southwestern lignite into synthetic crude oil that can be shipped to nearby Texas refineries and power plants for development of transportation fuels and power generation. Research was also undertaken to convert any potential by-products of this process such as CO2 to useful chemicals and gases which could be recycled and used as feedstock to the synthetic fuel process. These CO2 conversion processes used light energy to drive the endogonic reduction reactions involved. The project was divided into two tasks: A CO2 Conversion Task, and a Catalyst Optimization Task. The CO2 Conversion task was aimed at developing molecular and solid state catalysts for the thermal, electro- and photocatalytic reduction of CO2 to reduced products such as simple feedstock compounds (e.g. CO, H2, CHOOH, CH2O, CH3OH and CH4). For example, the research team recycled CO that was developed from this Task and used it as a feedstock for the production of synthetic crude in the Catalyst Optimization Task. In the Catalyst Optimization Task, the research team conducted bench-scale experiments with the goal of reducing overall catalyst cost in support of several synthetic crude processes that had earlier been developed. This was accomplished by increasing the catalyst reactivity thus reducing required concentrations or by using less expensive metals. In this task the team performed parametric experiments in small scale batch reactors in an effort to improve catalyst reactivity and to lower cost. They also investigated catalyst robustness by testing lignite feedstocks that vary in moisture, h, and volatile content.

Billo, Richard; Rajeshwar, Krishnan

2013-01-15T23:59:59.000Z

475

Field Testing of a Wet FGD Additive for Enhanced Mercury Control - Task 5 Full-Scale Test Results  

SciTech Connect (OSTI)

This Topical Report summarizes progress on Cooperative Agreement DE-FC26-04NT42309, 'Field Testing of a Wet FGD Additive'. The objective of the project is to demonstrate the use of two flue gas desulfurization (FGD) additives, Evonik Degussa Corporation's TMT-15 and Nalco Company's Nalco 8034, to prevent the re-emission of elemental mercury (Hg{sup 0}) in flue gas exiting wet FGD systems on coal-fired boilers. Furthermore, the project intends to demonstrate whether the additive can be used to precipitate most of the mercury (Hg) removed in the wet FGD system as a fine salt that can be separated from the FGD liquor and bulk solid byproducts for separate disposal. The project is conducting pilot- and full-scale tests of the additives in wet FGD absorbers. The tests are intended to determine required additive dosages to prevent Hg{sup 0} re-emissions and to separate mercury from the normal FGD byproducts for three coal types: Texas lignite/Powder River Basin (PRB) coal blend, high-sulfur Eastern bituminous coal, and low-sulfur Eastern bituminous coal. The project team consists of URS Group, Inc., EPRI, Luminant Power (was TXU Generation Company LP), Southern Company, IPL (an AES company), Evonik Degussa Corporation and the Nalco Company. Luminant Power has provided the Texas lignite/PRB co-fired test site for pilot FGD tests and cost sharing. Southern Company has provided the low-sulfur Eastern bituminous coal host site for wet scrubbing tests, as well as the pilot- and full-scale jet bubbling reactor (JBR) FGD systems tested. IPL provided the high-sulfur Eastern bituminous coal full-scale FGD test site and cost sharing. Evonik Degussa Corporation is providing the TMT-15 additive, and the Nalco Company is providing the Nalco 8034 additive. Both companies are also supplying technical support to the test program as in-kind cost sharing. The project is being conducted in six tasks. Of the six project tasks, Task 1 involves project planning and Task 6 involves management and reporting. The other four tasks involve field testing on FGD systems, either at pilot or full scale. The four tasks include: Task 2 - Pilot Additive Testing in Texas Lignite Flue Gas; Task 3 - Full-scale FGD Additive Testing in High-sulfur Eastern Bituminous Flue Gas; Task 4 - Pilot Wet Scrubber Additive Tests at Plant Yates; and Task 5 - Full-scale Additive Tests at Plant Yates. The pilot-scale tests and the full-scale test using high-sulfur coal were completed in 2005 and 2006 and have been previously reported. This topical report presents the results from the Task 5 full-scale additive tests, conducted at Southern Company's Plant Yates Unit 1. Both additives were tested there.

Gary Blythe; MariJon Owens

2007-12-01T23:59:59.000Z

476

Field Testing of a Wet FGD Additive for Enhanced Mercury Control  

SciTech Connect (OSTI)

This document is the final report for DOE-NETL Cooperative Agreement DE-FC26-04NT42309, 'Field Testing of a Wet FGD Additive'. The objective of the project has been to demonstrate the use of two flue gas desulfurization (FGD) additives, Evonik Degussa Corporation's TMT-15 and Nalco Company's Nalco 8034, to prevent the re-emission of elemental mercury (Hg{sup 0}) in flue gas exiting wet FGD systems on coal-fired boilers. Furthermore, the project was intended to demonstrate whether such additives can be used to precipitate most of the mercury (Hg) removed in the wet FGD system as a fine salt that can be separated from the FGD liquor and bulk solid byproducts for separate disposal. The project involved pilot- and full-scale tests of the additives in wet FGD absorbers. The tests were intended to determine required additive dosages to prevent Hg{sup 0} re-emissions and to separate mercury from the normal FGD byproducts for three coal types: Texas lignite/Powder River Basin (PRB) coal blend, high-sulfur Eastern bituminous coal, and low-sulfur Eastern bituminous coal. The project team consists of URS Group, Inc., EPRI, Luminant Power (was TXU Generation Company LP), Southern Company, IPL (an AES company), Evonik Degussa Corporation and the Nalco Company. Luminant Power provided the Texas lignite/PRB co-fired test site for pilot FGD tests and project cost sharing. Southern Company provided the low-sulfur Eastern bituminous coal host site for wet scrubbing tests, the pilot- and full-scale jet bubbling reactor (JBR) FGD systems tested, and project cost sharing. IPL provided the high-sulfur Eastern bituminous coal full-scale FGD test site and cost sharing. Evonik Degussa Corporation provided the TMT-15 additive, and the Nalco Company provided the Nalco 8034 additive. Both companies also supplied technical support to the test program as in-kind cost sharing. The project was conducted in six tasks. Of the six tasks, Task 1 involved project planning and Task 6 involved management and reporting. The other four tasks involved field testing on FGD systems, either at pilot or full scale. These four tasks included: Task 2 - Pilot Additive Testing in Texas Lignite Flue Gas; Task 3 - Full-scale FGD Additive Testing in High-sulfur Eastern Bituminous Flue Gas; Task 4 - Pilot Wet Scrubber Additive Tests at Plant Yates; and Task 5 - Full-scale Additive Tests at Plant Yates. The pilot-scale tests were completed in 2005 and the full-scale test using high-sulfur coal was completed in 2006; only the TMT-15 additive was tested in these efforts. The Task 5 full-scale additive tests conducted at Southern Company's Plant Yates Unit 1 were completed in 2007, and both the TMT-15 and Nalco 8034 additives were tested.

Gary Blythe; MariJon Owens

2007-12-31T23:59:59.000Z

477

Thermal Integration of CO{sub 2} Compression Processes with Coal-Fired Power Plants Equipped with Carbon Capture  

SciTech Connect (OSTI)

Coal-fired power plants, equipped either with oxycombustion or post-combustion CO{sub 2} capture, will require a CO{sub 2} compression system to increase the pressure of the CO{sub 2} to the level needed for sequestration. Most analyses show that CO{sub 2} compression will have a significant effect on parasitic load, will be a major capital cost, and will contribute significantly to reduced unit efficiency. This project used first principle engineering analyses and computer simulations to determine the effects of utilizing compressor waste heat to improve power plant efficiency and increase net power output of coal-fired power plants with carbon capture. This was done for units with post combustion solvent-based CO{sub 2} capture systems and for oxyfired power plants, firing bituminous, PRB and lignite coals. The thermal integration opportunities analyzed for oxycombustion capture are use of compressor waste heat to reheat recirculated flue gas, preheat boiler feedwater and predry high-moisture coals prior to pulverizing the coal. Among the thermal integration opportunities analyzed for post combustion capture systems are use of compressor waste heat and heat recovered from the stripper condenser to regenerate post-combustion CO{sub 2} capture solvent, preheat boiler feedwater and predry high-moisture coals. The overall conclusion from the oxyfuel simulations is that thermal integration of compressor heat has the potential to improve net unit heat rate by up to 8.4 percent, but the actual magnitude of the improvement will depend on the type of heat sink used and to a lesser extent, compressor design and coal rank. The simulations of a unit with a MEA post combustion capture system showed that thermal integration of either compressor heat or stripper condenser heat to preheat boiler feedwater would result in heat rate improvements from 1.20 percent to 4.19 percent. The MEA capture simulations further showed that partial drying of low rank coals, done in combination with feedwater heating, would result in heat rate reductions of 7.43 percent for PRB coal and 10.45 percent for lignite.

Edward Levy

2012-06-29T23:59:59.000Z

478

Recovery of solid fuel from municipal solid waste by hydrothermal treatment using subcritical water  

SciTech Connect (OSTI)

Highlights: Black-Right-Pointing-Pointer Hydrothermal treatment using subcritical water was studied to recover solid fuel from MSW. Black-Right-Pointing-Pointer More than 75% of carbon in MSW was recovered as char. Black-Right-Pointing-Pointer Heating value of char was comparable to that of brown coal and lignite. Black-Right-Pointing-Pointer Polyvinyl chloride was decomposed at 295 Degree-Sign C and 8 MPa and was removed by washing. - Abstract: Hydrothermal treatments using subcritical water (HTSW) such as that at 234 Degree-Sign C and 3 MPa (LT condition) and 295 Degree-Sign C and 8 MPa (HT condition) were investigated to recover solid fuel from municipal solid waste (MSW). Printing paper, dog food (DF), wooden chopsticks, and mixed plastic film and sheets of polyethylene, polypropylene, and polystyrene were prepared as model MSW components, in which polyvinylchloride (PVC) powder and sodium chloride were used to simulate Cl sources. While more than 75% of carbon in paper, DF, and wood was recovered as char under both LT and HT conditions, plastics did not degrade under either LT or HT conditions. The heating value (HV) of obtained char was 13,886-27,544 kJ/kg and was comparable to that of brown coal and lignite. Higher formation of fixed carbon and greater oxygen dissociation during HTSW were thought to improve the HV of char. Cl atoms added as PVC powder and sodium chloride to raw material remained in char after HTSW. However, most Cl originating from PVC was found to converse into soluble Cl compounds during HTSW under the HT condition and could be removed by washing. From these results, the merit of HTSW as a method of recovering solid fuel from MSW is considered to produce char with minimal carbon loss without a drying process prior to HTSW. In addition, Cl originating from PVC decomposes into soluble Cl compound under the HT condition. The combination of HTSW under the HT condition and char washing might improve the quality of char as alternative fuel.

Hwang, In-Hee, E-mail: hwang@eng.hokudai.ac.jp [Laboratory of Solid Waste Disposal Engineering, Faculty of Engineering, Hokkaido University, Kita 13 Nishi 8, Kita-ku, Sapporo 060 8628 (Japan); Aoyama, Hiroya; Matsuto, Toshihiko; Nakagishi, Tatsuhiro; Matsuo, Takayuki [Laboratory of Solid Waste Disposal Engineering, Faculty of Engineering, Hokkaido University, Kita 13 Nishi 8, Kita-ku, Sapporo 060 8628 (Japan)

2012-03-15T23:59:59.000Z

479

Reduction of iron oxide as an oxygen carrier by coal pyrolysis and steam char gasification intermediate products  

SciTech Connect (OSTI)

The feasibility of the reduction of oxygen carrier Fe{sub 2}O{sub 3} in chemical-looping combustion using solid fuel (lignite) provided a gasifying agent like steam was introduced into the reactor was investigated with a fixed-bed reactor. The X-ray diffractometer and scanning electron microscope were used for the characterization of the Fe{sub 2}O{sub 3} and its reduction residue. Results strongly supported the feasibility of Fe{sub 2}O{sub 3} reduction by lignite and obtaining pure CO{sub 2} from the off-gases. Fe{sub 2}O{sub 3} can be fully converted to Fe{sub 3}O{sub 4} by pyrolysis and gasification intermediates primarily H{sub 2} and CO, which was confirmed by both the off-gas concentrations and X-ray diffractometer analysis. A 0.75 g portion of Fe{sub 2}O{sub 3} can be completely reduced to Fe{sub 3}O{sub 4} by the volatile matter released from 0.1 g coal, and Fe{sub 2}O{sub 3} can be fully reduced to Fe{sub 3}O{sub 4} by steam char gasification products provided that the molar ratio of carbon in char to Fe{sub 2}O{sub 3} is 1:6. The purity of CO{sub 2} in the outlet gases was higher than 85% when Fe{sub 2}O{sub 3} was reduced by intermediate products during coal pyrolysis, and the purity of CO{sub 2} in the off-gases was higher than 95% when Fe{sub 2}O{sub 3} was reduced by intermediate products resulting from steam char gasification, making CO{sub 2} sequestration disposal desirable for high purity CO{sub 2}. The char gasification reaction rate was slow compared with the reactivity of the iron oxide with the char gasified intermediates, indicating that char gasification was the rate-limiting step in the reduction process. In the steam char gasification process, the times it took to reach 90% carbon conversion for K-10-char and Ca-10-char were 15 and 30 min, respectively, at 1123 K, but the time for the raw char was 50 min at 1173 K. 40 refs., 15 figs., 3 tabs.

Jing-biao Yang; Ning-sheng Cai; Zhen-shan Li [Tsinghua University, Beijing (China). Key Laboratory of Thermal Science and Power Engineering of Ministry of Education

2007-12-15T23:59:59.000Z

480

Coal Direct Chemical Looping Retrofit to Pulverized Coal Power Plants for In-Situ CO2 Capture  

SciTech Connect (OSTI)

A novel Coal Direct Chemical Looping (CDCL) system is proposed to effectively capture CO2 from existing PC power plants. The work during the past three years has led to an oxygen carrier particle with satisfactory performance. Moreover, successful laboratory, bench scale, and integrated demonstrations have been performed. The proposed project further advanced the novel CDCL technology to sub-pilot scale (25 kWth). To be more specific, the following objectives attained in the proposed project are: 1. to further improve the oxygen carrying capacity as well as the sulfur/ash tolerance of the current (working) particle; 2. to demonstrate continuous CDCL operations in an integrated mode with > 99% coal (bituminous, subbituminous, and lignite) conversion as well as the production of high temperature exhaust gas stream that is suitable for steam generation in existing PC boilers; 3. to identify, via demonstrations, the fate of sulfur and NOx; 4. to conduct thorough techno-economic analysis that validates the technical and economical attractiveness of the CDCL system. The objectives outlined above were achieved through collaborative efforts among all the participants. CONSOL Energy Inc. performed the techno-economic analysis of the CDCL process. Shell/CRI was able to perform feasibility and economic studies on the large scale particle synthesis and provide composite particles for the sub-pilot scale testing. The experience of B&W (with boilers) and Air Products (with handling gases) assisted the retrofit system design as well as the demonstration unit operations. The experience gained from the sub-pilot scale demonstration of the Syngas Chemical Looping (SCL) process at OSU was able to ensure the successful handling of the solids. Phase 1 focused on studies to improve the current particle to better suit the CDCL operations. The optimum operating conditions for the reducer reactor such as the temperature, char gasification enhancer type, and flow rate were identified. The modifications of the existing bench scale reactor were completed in order to use it in the next phase of the project. In Phase II, the optimum looping medium was selected, and bench scale demonstrations were completed using them. Different types of coal char such as those obtained from bituminous, subbituminous, and lignite were tested. Modifications were made on the existing sub-pilot scale unit for coal injection. Phase III focused on integrated CDCL demonstration in the sub-pilot scale unit. A comprehensive ASPEN® simulations and economic analysis was completed by CONSOL t is expected that the CDCL process will be ready for further demonstrations in a scale up unit upon completion of the proposed project.

Zeng, Liang; Li, Fanxing; Kim, Ray; Bayham, Samuel; McGiveron, Omar; Tong, Andrew; Connell, Daniel; Luo, Siwei; Sridhar, Deepak; Wang, Fei; Sun, Zhenchao; Fan, Liang-Shih

2013-09-30T23:59:59.000Z

Note: This page contains sample records for the topic "bitu subbitu lignite" from the National Library of EnergyBeta (NLEBeta).
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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.


481

Spatial and temporal variability in vegetation and coal facies as reflected by organic petrological and geochemical data in the Middle Miocene Çayirhan coal field (Turkey)  

Science Journals Connector (OSTI)

Abstract Coal channel samples of Middle Miocene age are collected from the first (Tv) and second (Tb) seams from underground mines and from exploration boreholes within the Çayirhan coal field in the Beypazari Basin (Turkey). They are investigated in order to detect spatial and temporal changes in maceral and molecular composition of coal and to relate them to changes in vegetation and depositional environment. The mean random reflectance values of ulminite (0.40% Rr) indicate a lignite to subbituminous-C coal in rank. Maceral composition and biomarker ratios of the samples from both seams at the Çayirhan deposit argue for coal formation in a limno-telmatic environment under dysoxic to anoxic conditions. Alkaline surface waters of changing pH-values and a high and unstable water level at the palaeomire are evidenced by moderate to high gelification index (GI) and ground water influence (GWI) values, as well as high sulphur contents. Variations in tissue preservation index (TPI) and vegetation index (VI) values point to minor variations in the palaeovegetation during peat formation. Herbaceous plants dominated in both Tb and Tv palaeomires (low TPI and VI values), whereas in the surroundings arboreal vegetation were predominant. The decreasing trends in pristane/phytane ratios and carbon preference index (CPI) values towards the NE are suggested to reflect oxygen deficient conditions during peat formation due to a higher (ground)water level in this part of the basin. The occurrence of C29 diasterenes in low abundances provides evidence for periods of lower pH in the mire. The borehole samples from the NE show slightly enhanced contributions of n-alkanes from algal and microbial sources. The terpenoid hydrocarbons present in the lignite argue for a major contribution of angiosperms to peat formation and slightly enhanced proportions of gymnosperms in the Tv palaeomire in the NE. Based on the high concentrations of lupane-type triterpenoids in the coal seams from the underground mine, a higher density of Betulaceae in the arboreal vegetation in the SW is indicated.

Achim Bechtel; Ali Ihsan Karayi?it; Reinhard F. Sachsenhofer; Hülya ?naner; Kimon Christanis; Reinhard Gratzer

2014-01-01T23:59:59.000Z

482

U.S. Energy Information Administration | Annual Coal Report 2012  

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

Sales Price of Coal by State and Coal Rank, 2012 Sales Price of Coal by State and Coal Rank, 2012 (dollars per short ton) U.S. Energy Information Administration | Annual Coal Report 2012 Table 31. Average Sales Price of Coal by State and Coal Rank, 2012 (dollars per short ton) U.S. Energy Information Administration | Annual Coal Report 2012 Coal-Producing State Bituminous Subbituminous Lignite Anthracite Total Alabama 106.57 - - - 106.57 Alaska - w - - w Arizona w - - - w Arkansas w - - - w Colorado w w - - 37.54 Illinois 53.08 - - - 53.08 Indiana 52.01 - - - 52.01 Kentucky Total 63.12 - - - 63.12 Kentucky (East) 75.62 - - - 75.62 Kentucky (West) 48.67 - - - 48.67 Louisiana - - w - w Maryland 55.67 - - - 55.67 Mississippi - - w - w Missouri w - - - w Montana w 17.60 w - 18.11 New Mexico w w - - 36.74 North Dakota - - 17.40 - 17.40 Ohio 47.80 - - - 47.80 Oklahoma 59.63 - - - 59.63 Pennsylvania Total 72.57

483

NETL: Gasifipedia  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Gasifier: DOE Supported R&D for Gasifier Optimization/Plant Supporting Systems Gasifier: DOE Supported R&D for Gasifier Optimization/Plant Supporting Systems Low-rank Coal Optimization/Transport Gasification Transport Reactor Integrated Gasification (TRIG(tm)), originally developed by Kellogg, Brown, and Root (KBR) based on the company's fluidized catalytic cracking technology, has been enhanced through extensive testing by Southern Company at the Power Systems Development Facility in cooperation with NETL. Testing corroborated that the gasifier effectively handles low-rank coals (e.g., Powder River Basin lignite), which account for half of the worldwide coal reserves but are often considered uneconomic as energy sources due to high moisture and ash contents. Research in this area will focus on the development of gasification performance prediction models to reduce uncertainties associated with the use of low-rank coals and co-feeds, including biomass. The development of a hierarchy of co-feed TRIG models with uncertainty quantification will provide a practical framework for quantifying various types of uncertainties and assessing the impact of their propagation through computer models of the physical system. Reducing the uncertainty of using these feeds will enable gasification designers and operators, leading to greater use of these resources.

484

NETL: Gasification  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

in IGCC Projects in IGCC Projects The Great Plains Synfuels Plant has long been gasifying coal to produce synthetic natural gas and ammonia, and capturing CO2 which is pipelined to Canada for EOR in the Weyburn oil field. Several new IGCC-based projects in the United States will be greatly expanding the scope of CO2 capture and use/storage. Kemper County Energy Facility Mississippi Power's Kemper County facility is in late stages of construction. It will be a lignite-fuel IGCC plant, generating a net 524 MW of power from syngas, while capturing over 65% of CO2 generated. The CO2 will be sent by pipeline to depleted oil fields in Mississippi for enhanced oil recovery operations. Hydrogen Energy California (HECA) Project HECA will be a 300MW net, coal and petroleum coke-fueled IGCC polygeneration plant (producing hydrogen for both power generation and fertilizer manufacture). Ninety percent of the CO2 produced will be captured and transported to Elk Hills Oil Field for EOR, enabling recovery of 5 million additional barrels of domestic oil per year.

485

U.S. Energy Information Administration (EIA)  

Gasoline and Diesel Fuel Update (EIA)

2. World recoverable coal reserves as of January 1, 2009 2. World recoverable coal reserves as of January 1, 2009 billion short tons Recoverable reserves by coal rank Region/country Bituminous and anthracite Subbituminous Lignite Total 2010 production Reserves-to- production ratio (years) World total 445.0 285.9 215.2 946.1 7.954 119 United Statesa 118.4 107.2 33.1 258.6 1.084 238 Russia 54.1 107.4 11.5 173.1 0.359 482 China 68.6 37.1 20.5 126.2 3.506 36 Other non-OECD Europe and Eurasia 42.2 18.9 39.9 100.9 0.325 311 Australia and New Zealand 40.9 2.5 41.4 84.8 0.473 179 India 61.8 0.0 5.0 66.8 0.612 109 OECD Europe 6.2 0.9 54.5 61.6 0.620 99 Africa 34.7 0.2 0.0 34.9 0.286 122 Other non-OECD Asia 3.9 3.9 6.8 14.7 0.508 29 Other Central and South America 7.6 1.0 0.0 8.6 0.085 101

486

SAS Output  

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

. Receipts and Quality of Coal Delivered for the Electric Power Industry, 2002 through 2012 . Receipts and Quality of Coal Delivered for the Electric Power Industry, 2002 through 2012 Bituminous Subbituminous Lignite Period Receipts (Thousand Tons) Average Sulfur Percent by Weight Average Ash Percent by Weight Receipts (Thousand Tons) Average Sulfur Percent by Weight Average Ash Percent by Weight Receipts (Thousand Tons) Average Sulfur Percent by Weight Average Ash Percent by Weight 2002 423,128 1.47 10.1 391,785 0.36 6.2 65,555 0.93 13.3 2003 467,286 1.50 10.0 432,513 0.38 6.4 79,869 1.03 14.4 2004 470,619 1.52 10.4 445,603 0.36 6.0 78,268 1.05 14.2 2005 480,179 1.56 10.5 456,856 0.36 6.2 77,677 1.02 14.0 2006 489,550 1.59 10.5 504,947 0.35 6.1 75,742 0.95 14.4 2007 467,817 1.62 10.3 505,155 0.34 6.0 71,930 0.90 14.0

487

NETL: Mercury Emissions Control Technologies - Evaluation of MerCAP for  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Evaluation of MerCAP(tm) for Power Plant Mercury Control Evaluation of MerCAP(tm) for Power Plant Mercury Control URS Group and its test team will perform research to further develop the novel Mercury Control via Adsorption Process (MerCAP™). The general MerCAP™ concept is to place fixed structures into a flue gas stream to adsorb mercury and then periodically regenerate them and recover the captured mercury. EPRI has shown that gold-based sorbents can achieve high levels of mercury removal in scrubbed flue gases. URS is proposing tests at two power plants using gold MerCAP™, installed downstream of either a baghouse or wet scrubber, to evaluate mercury removal from flue gas over a period of 6 months. At Great River Energy’s Stanton Station, which burns North Dakota lignite, sorbent structures will be retrofitted into a single compartment in the Unit 10 baghouse enabling reaction with a 6 MWe equivalence of flue gas. At Southern Company Services’ Plant Yates, which burns Eastern bituminous coal, gold-coated plates will be configured as a mist eliminator (ME) located downstream of a 1 MWe pilot wet absorber , which receives flue gas from Unit 1.

488

Application of TG–FTIR to the determination of organic oxygen and its speciation in the Argonne premium coal samples  

Science Journals Connector (OSTI)

During rapid pyrolysis of coal, TG–FTIR (thermogravimetry – Fourier transform infrared) technique can be effectively used to simultaneously detect and measure the three main O-containing gases, namely H2O, CO and CO2. Their sum corresponds to the quantitative amount of oxygen in the coal and is, in general, inherently more accurate than the ‘by-difference’ values. In this paper, we first attempt to relate the ‘by-difference’ values for %O reported for the Argonne premium coal samples (lignite to bituminous rank) (Argonne Users Handbook) to those determined from a TG–FTIR examination of the pyrolysis gases evolved. Another objective of the work is to relate the pyrolysis gases (H2O, CO and CO2) evolved to oxygen-containing functional groups found in coals as well as the evolution of these functional groups as a function of rank. Correlations are also developed between the TG–FTIR oxygen values and other parameters determined for the Argonne Premium Coals. In particular, comparisons of our results using TG–FTIR with analyses carried out by other workers on functional group analysis of acidic groups are considered.

J.A. MacPhee; J.-P. Charland; L. Giroux

2006-01-01T23:59:59.000Z

489

Interlaboratory comparisons of petrography of liquefaction residues from three Argonne premium coals  

Science Journals Connector (OSTI)

Three Argonne Premium coal samples, the Beulah-Zap lignite (North Dakota), the high volatile A bituminous Stockton (West Virginia), and the low volatile Pocahontas No. 3 Virginia), were ground to three initial sizes: ?20 mesh, ?100 mesh, and “micronized”. The samples were each subjected to liquefaction at 673 K for 30 min at a 2:1 tetralin: coal ratio and in an H2 atmosphere at 13.79 \\{MPa\\} (?2000 psi). Polished pellets of the uncoverted residues were circulated to three laboratories for a study designed to determine, albeit on a limited scale, the interlaboratory consistency in constituent identification and the problem areas in maceral/neo-maceral/mineral recognition. Within broad categories, the agreement for the Beulah-Zap and Pocahontas No. 3 residues is good. The high volatile A bituminous Stockton coal was the most plastic and most altered, resulting in a residue lending itself to more subjective interpretations. The biggest discrepancy between the laboratories is in the distinction of granular residue and mineral matter and in the transitions between “partially reacted macerals” and “vitroplast” and between “vitroplast” and “granular residue”. The initial size of the feed coal appears to influence the recognition of material in the residue.

James C. Hower; Ken B. Anderson; Glenda Mackay; Henrique Pinheiro; Deolinda Flores; Manuel J. Lemos de Sousa

1995-01-01T23:59:59.000Z

490

Hydrothermal reactions of fly ash. Final report  

SciTech Connect (OSTI)

The emphasis of the work done has been to determine the reactivities of two ashes believed to be representative of those generated. A bituminous ash and a lignitic ash have been investigated. The reactions of these ashes undergo when subjected to mild hydrothermal conditions were explored. The nature of the reactions which the ashes undergo when alkaline activators, calcium hydroxide and calcium sulfate are present was also investigated. It was determined that calcium silicate hydrate, calcium aluminate hydrate, and the calcium sulfoaluminate hydrate ettringite form under these conditions. It appears 3CaO{center_dot}Al{sub 2}O{sub 3}{center_dot}3CaSO{sub 4}{center_dot}32H{sub 2}O (ettringite) formation needs to be considered in ashes which contain significant amounts of sulfate. Therefore the stability region for ettringite was established. It was also determined that calcium silicate hydrate, exhibiting a high internal surface area, will readily form with hydrothermal treatment between 50{degrees} and 100{degrees}C. This phase is likely to have a significant capacity to take up heavy metals and oxyanions and this ability is being explored.

Brown, P.W.

1995-12-31T23:59:59.000Z

491

Study of ash deposition during coal combustion under oxyfuel conditions  

Science Journals Connector (OSTI)

This paper presents a comparative study on ash deposition of two selected coals, Russian coal and lignite, under oxyfuel (O2/CO2) and air combustion conditions. The comparison is based on experimental results and subsequent evaluation of the data and observed trends. Deposited as well as remaining filter ash (fine ash) samples were subjected to XRD and ICP analyses in order to study the chemical composition and mineral transformations undergone in the ash under the combustion conditions. The experimental results show higher deposition propensities under oxyfuel conditions; the possible reasons for this are investigated by analyzing the parameters affecting the ash deposition phenomena. Particle size seems to be larger for the Russian coal oxy-fired ash, leading to increased impaction on the deposition surfaces. The chemical and mineralogical compositions do not seem to differ significantly between air and oxyfuel conditions. The differences in the physical properties of the flue gas between air combustion and oxyfuel combustion, e.g. density, viscosity, molar heat capacity, lead to changes in the flow field (velocities, particle trajectory and temperature) that together with the ash particle size shift seem to play a role in the observed ash deposition phenomena.

L. Fryda; C. Sobrino; M. Glazer; C. Bertrand; M. Cieplik

2012-01-01T23:59:59.000Z

492

Modelling the Fate of Sulphur During Pulverized Coal Combustion under Conventional and Oxy-fuel Conditions  

Science Journals Connector (OSTI)

Abstract Focus of the present study is on the fate of sulphur during coal combustion and modelling of the corresponding \\{SOx\\} formation mechanisms. The sulphur chemistry during coal combustion in general is briefly described and potential effects of the oxy-fuel conditions are explained. Details about the developed sulphur chemistry model which covers both heterogeneous and homogeneous reaction pathways are given. The model describes the sulphur transformation in a sequence of stages: the release of coal-bound sulphur, gas phase reactions of sulphuric species, and self-retention of sulphur oxides by coal ash. The model is evaluated against experimental data from IFK's semi-industrial scale furnace (500 kWth) firing lignite at conventional and oxy-fuel combustion conditions. Four reference cases are considered, i.e. air and oxy-fuel mode in both non-staged and staged operation. Based on the results from the basic combustion simulation with AIOLOS, the sulphur chemistry model has been applied in a subsequent post-processing step. The sulphur related results show that the general trends regarding the species concentrations may be predicted correctly. The specific characteristics and the effect of oxy-fuel conditions and oxidant staging are captured correspondingly within the simulation results. Yet, certain deficiencies concerning the quantitative prediction could be identified which necessitate further investigations.

Michael Müller; Uwe Schnell; Günter Scheffknecht

2013-01-01T23:59:59.000Z

493

Coal distribution, January-June 1985. [USA; January-June; 1981 to 1985; producing district; destination; transport means  

SciTech Connect (OSTI)

This Energy Information Administration (EIA) report continues the quarterly series on coal distribution started in 1957 by the Bureau of Mines, Department of the Interior, as a Mineral Industry Survey, Distribution of Bituminous Coal and Lignite Shipments. The publication provides volume data on coal distribution by coal-producing district of origin, consumer use, method of transportation, and State of destination necessary for EIA to fulfill its data colletion functions as authorized by the Federal Energy Administration Act of 1974. All data for 1985 in this report are preliminary. Data for 1981-1984 are final. Coal shipments from mines in Appalachia were 10.2% lower, while shipments from western mines were up by 13.7%, reaching a record 6-month high. Export shipments moved ahead of their 1984 pace by 9.2% despite a 27.0% decline in shipments to Canada. Texas expanded its lead as the Nation's top State to receive coal, and North Dakota experienced an upsurge in coal receipts due to the startup of the Great Plains coal gasification project. Coal production and purchases totaled 438.4 million short tons, 2.2% below last year's level. 6 figs., 33 tabs.

McNair, M.B.

1985-09-26T23:59:59.000Z

494

Enhancement of Biogenic Coalbed Methane Production and Back Injection of Coalbed Methane Co-Produced Water  

SciTech Connect (OSTI)

Biogenic methane is a common constituent in deep subsurface environments such as coalbeds and oil shale beds. Coalbed methane (CBM) makes significant contributions to world natural gas industry and CBM production continues to increase. With increasing CBM production, the production of CBM co-produced water increases, which is an environmental concern. This study investigated the feasibility in re-using CBM co-produced water and other high sodic/saline water to enhance biogenic methane production from coal and other unconventional sources, such as oil shale. Microcosms were established with the selected carbon sources which included coal, oil shale, lignite, peat, and diesel-contaminated soil. Each microcosm contained either CBM coproduced water or groundwater with various enhancement and inhibitor combinations. Results indicated that the addition of nutrients and nutrients with additional carbon can enhance biogenic methane production from coal and oil shale. Methane production from oil shale was much greater than that from coal, which is possibly due to the greater amount of available Dissolved Organic Carbon (DOC) from oil shale. Inconclusive results were observed from the other sources since the incubation period was too low. WRI is continuing studies with biogenic methane production from oil shale.

Song Jin

2007-05-31T23:59:59.000Z

495

TOXIC SUBSTANCES FROM COAL COMBUSTION--A COMPREHENSIVE ASSESSMENT, PHASE II: ELEMENT MODES OF OCCURRENCE FOR THE OHIO 5/6/7, WYODAK AND NORTH DAKOTA COAL SAMPLES  

SciTech Connect (OSTI)

This study reports on the second phase (Phase II) of USGS research activities in support of DOE contract DE-AC22-95PC95101 ''Toxic Substances From Coal Combustion--A Comprehensive Assessment'', funded under DOE Interagency Agreement DE-AI22-95PC95145. The purpose of the study was to provide a quantitative and semi-quantitative characterization of the modes of occurrence of trace elements in coal samples investigated under Phase II, including (1) Ohio 5/6/7, an Ohio bituminous coal sample blended from the No.5, No.6, and No.7 beds; (2) North Dakota, a lignite sample from the Falkirk Mine, Underwood, ND, and (3) Wyodak, a sub-bituminous coal sample from the Cordero Mine, Gillette, WY. Samples from these coal beds were selected for their range in rank and commercial applicability. Results of this research provide basic information on the distribution of elements in Phase II coal samples, information needed for development of a commercial predictive model for trace-element behavior during coal combustion.

Allan Kolker; Stanley J. Mroczkowski; Curtis A. Palmer; Kristen O. Dennen; Robert B. Finkelman; John H. Bullock Jr.

2002-05-30T23:59:59.000Z

496

Applying clean coal technologies in the Asian Pacific Basin  

SciTech Connect (OSTI)

The United States is well positioned to play an expanding role in meeting the energy-technology demands of the Asian Pacific Basin (APB). The US Clean Coal Technology (CCT) Demonstration Program, spearheaded, stewarded, and managed by the US Department of Energy in full partnership with US industry, provides a proving ground for innovative coal-related technologies. Its precombustion, combustion, postcombustion, and conversion technologies, once tested and proven at the demonstration level, are expected to be applicable to coal-burning facilities in the APB (and elsewhere), in both the utility and industrial sectors. These technologies and concepts are expected to allow for increased utilization of the vast coal and lignite resources in the APB in an efficient, economic, and environmentally acceptable manner. They also could provide the opportunity for increased sales of US coals. Specific, potential applications in the APB will be presented, highlighting possibilities in Indonesia, Japan, the Peoples' Republic of China, South Korea, Taiwan, and Thailand. 4 refs., 1 tab.

Gillette, J.L.; Szpunar, C.B.; Surles, T.G.

1990-01-01T23:59:59.000Z

497

Conventional coal preparation in the United States  

SciTech Connect (OSTI)

Processing of bituminous and anthracite coal is widely practiced in the United States and, as mentioned earlier, about 80 percent of the production of these coals is processed as clean coal in preparation plants. Subbituminous coal is not widely processed, primarily because these low rank raw coals are low in sulfur (0.5 to 1.0 percent) and relatively low in ash (8 to 15 percent). They are also relatively low in heat content due to their high inherent moisture. Lignite coals, to the best of the authors{close_quote} knowledge, are not presently being processed in Conventional Coal Preparation plants. This is due to their unstable nature and putting them in water in a coal preparation plant is likely to cause severe degradation in particle size and add to their already high inherent moisture content. The following are the benefits of clean coal processing: produces a uniform product which can be utilized more efficiently; produces a higher quality product which results in higher efficiency at the power station or the steel mill; reduces sulfur dioxide and other adverse stack emissions during coal firing which is a very important environmental consideration; reduces ash or slag handling costs by the user; reduces shipping costs; and reduces handling and storage costs. Processing any stable raw coal in a coal preparation plant will always produce a higher grade product which is a more efficient and a more environmentally acceptable fuel for use at power stations, steel mills, home heating or industrial boilers.

Beck, M.K.; Taylor, B.

1993-12-31T23:59:59.000Z

498

US fossil fuel technologies for Thailand  

SciTech Connect (OSTI)

The US Department of Energy has been encouraging other countries to consider US coal and coal technologies in meeting their future energy needs. Thailand is one of three developing countries determined to be a potentially favorable market for such exports. This report briefly profiles Thailand with respect to population, employment, energy infrastructure and policies, as well as financial, economic, and trade issues. Thailand is shifting from a traditionally agrarian economy to one based more strongly on light manufacturing and will therefore require increased energy resources that are reliable and flexible in responding to anticipated growth. Thailand has extensive lignite deposits that could fuel a variety of coal-based technologies. Atmospheric fluidized-bed combustors could utilize this resource and still permit Thailand to meet emission standards for sulfur dioxide. This option also lends itself to small-scale applications suitable for private-sector power generation. Slagging combustors and coal-water mixtures also appear to have potential. Both new construction and refurbishment of existing plants are planned. 18 refs., 3 figs., 7 tabs.

Buehring, W.A.; Dials, G.E.; Gillette, J.L.; Szpunar, C.B.; Traczyk, P.A.

1990-10-01T23:59:59.000Z

499

Preparation and combustion of coal-water fuel from the Sin Pun coal deposit, southern Thailand  

SciTech Connect (OSTI)

In response to an inquiry by the Department of Mineral Resources in Thailand, the Energy & Environmental Research Center (EERC) prepared a program to assess the responsiveness of Sin Pun lignite to the temperature and pressure conditions of hot-water drying. The results indicate that drying made several improvements in the coal, notably increases in heating value and carbon content and reductions in equilibrium moisture and oxygen content. The equilibrium moisture content decreased from 27 wt% for the raw coal to about 15 wt% for the hot-water-dried (HWD) coals. The energy density for a pumpable coal-water fuel (CWF) indicates an increase from 4500 to 6100 Btu/lb by hot-water drying. Approximately 650 lb of HWD Sin Pun CWF were fired in the EERC`s combustion test facility. The fuel burned extremely well, with no feed problems noted during the course of the test. Fouling and slagging deposits each indicated a very low rate of ash deposition, with only a dusty layer formed on the cooled metal surfaces. The combustor was operated at between 20% and 25% excess air, resulting in a flue gas SO{sub 2} concentration averaging approximately 6500 parts per million.

NONE

1997-05-01T23:59:59.000Z

500

A compact XRF unit for determining total sulphur content in coals  

SciTech Connect (OSTI)

A microcomputer based x-ray fluorescence (XRF) unit was developed for off-line determination of total sulphur content in coal samples. The unit consisted of the x-ray exciting/measuring set and the microcomputer with a plug-in interface card, An Fe-55 radioisotope was used as the exciting source while a krypton-filled proportional counter was used to measure x-rays from the samples. The x-ray spectrum was simultaneously displayed on the microcomputer screen. For quantitative determination of sulphur, the intensities of sulphur K x-rays as well as calcium K x-rays and scattered x-rays were taken into account. The unit was tested with finely-ground, dried and compressed lignite, subbituminous and bituminous samples. It was found that for low-calcium coals the results were in good agreement with those obtained from the standard chemical analysis method within {+-}0.2 %S and within {+-}0.5 %S for high-calcium coals.

Sumitra, T.; Chankow, N.; Punnachaiya, S.; Srisatit, S. [Chulalongkorn Univ., Bangkok (Thailand)

1994-12-31T23:59:59.000Z