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Exploratory research on solvent refined coal liquefaction. Annual technical progress report, January 1-December 31, 1979

Description: This report summarizes the progress of the Exploratory Research on Solvent Refined Coal Liquefaction project by The Pittsburg and Midway Coal Mining Co.'s Merriam Laboratory during 1979. In a series of experiments with varying feed gas composition, low levels (5 to 10 mole %) of carbon monoxide had little effect on the SRC II processing of Pittsburgh Seam coal (Powhatan No. 5 Mine) while higher levels (20 to 40 mole %) resulted in a general degradation of operability and reduced oil yields. Add… more
Date: September 1, 1980
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Evaluation of an optical microscope method for coal-pyrite/marcasite differentiation

Description: A reflected-polarized light microscope technique for coal marcasite-pyrite differentiation is detailed. Presence of the two minerals was verified by x-ray diffraction analysis. The optical technique produced marcasite content values that were consistently lower than those measured by x-ray diffraction. Although the optical technique produces data that are at best semi-quantitative, it can be used to approximate (+-20%) marcasite concentration in coal without a heavy mineral concentration step.
Date: May 1, 1980
Creator: Sanner, Jr, W. S. & Meteney, D. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Synthesis and evaluation of new cathode materials for rechargeable lithium batteries. Annual report, April 26, 1976-September 15, 1977

Description: The objective of the first year of this study was the investigation of two new classes of complex sulfide materials of potential value for ambient and high temperature, high energy rechargeable batteries with lithium anodes. The two new classes were the sulfospinels and simple and mixed layered disulfides of transitional metals of groups IVB and VB. In addition, three simple sulfides, CoS, CoS/sub 2/ and FeS/sub 2/ were also investigated. Studies of the synthesis methods have resulted in the de… more
Date: December 1, 1977
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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CaO interaction in the staged combustion of coal

Description: The LIMB (limestone injection multi-stage burner) process offers special potential for reducing NO/sub x/ and SO/sub x/ by at least 50 percent in coal combustion. This is to be accomplished by adding limestone with fuel and/or air in a low NO/sub x/ burner. This program has been directed to defining the chemistry and kinetics necessary to optimize sulfur capture in LIMB combustion. More specifically, this program has attempted to clarify the role of calcium sulfide in LIMB chemistry. When limes… more
Date: December 19, 1983
Creator: Levy, Arthur; Merryman, Earl L. & Rising, Bruce W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Air/water oxydesulfurization of coal: laboratory investigation

Description: Air/water oxidative desulfurization has been demonstrated in autoclave experiments at the Pittsburgh Energy Technology Center for various coals representative of the major US coal basins. This experimentation has shown that the reaction proceeds effectively for pulverized coals at temperatures of 150 to 200/sup 0/C with air at a total system pressure of 500 to 1500 psig. Above 200/sup 0/C, the loss of coal and product heating value increases due to oxidative consumption of carbon and hydrogen. … more
Date: August 1, 1980
Creator: Warzinski, R. P.; Friedman, S.; Ruether, J. A. & LaCount, R. B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Surface electrochemical control for fine coal and pyrite separation

Description: This technical progress report, prepared in accordance with the reporting requirements of DOE Project No. DE-AC22-89PC89758, covers the work performed from April 1, 1991 to June 30, 1991. The ongoing work includes the characterization of coal pyrites, the floatability evaluation of three typical US coal samples, the flotation behavior of coal pyrites, the electrochemical measurement of the surface properties of coal pyrites, and the characterization of species produced at pyrite surfaces. 6 ref… more
Date: January 1, 1991
Creator: Hu, Weibai; Huang, Qinping; Riley, A.; Zhu, Ximeng; Bodily, D. M.; Liang, Jun et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Advanced coal liquefaction research. Quarterly technical progress report, July 1, 1983-September 30, 1983

Description: Work this quarter focused on staged liquefaction. The effect of residence time on conversion in single pass experiments was found to be quite different for the subbituminous Belle Ayr Mine and bituminous Illinois No. 6 coals studied. With bituminous coal, conversion to soluble material is quite high and the limit of conversion is approached in only a few minutes. With a subbituminous coal, however, conversion is much lower and the limit of conversion is approached much more slowly. Short contac… more
Date: April 1, 1984
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Fossil energy research meeting

Description: U.S. ERDA's research programs in fossil energy are reviewed with brief descriptions, budgets, etc. Of general interest are discussions related to the capabilities for such research of national laboratories, universities, energy centers, etc. Of necessity many items are treated briefly, but a general overview of the whole program is provided. (LTN)
Date: December 1, 1977
Creator: Kropschot, R. H. & Phillips, G. C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Exploratory research on solvent refined coal liquefaction. Quarterly technical progress report, July 1, 1979-September 30, 1979

Description: This report summarizes the progress of the Exploratory Research on Solvent Refined Coal Liquefaction project by The Pittsburgh and Midway Coal Mining Co.'s Merriam Laboratory for the period July 1, 1979 through September 30, 1979. In a series of experiments with varying feed gas composition, high levels (20 to 40 mol %) of carbon monoxide resulted in a general degradation of operability and reduced oil yields from Powhatan coal (Pittsburgh Seam). Addition of finely divided pyrite to the reactiv… more
Date: July 1, 1980
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Separations innovative concepts: Project summary

Description: This project summary includes the results of 10 innovations that were funded under the US Department's Innovative Concept Programs. The concepts address innovations that can substantially reduce the energy used in industrial separations. Each paper describes the proposed concept, and discusses the concept's potential energy savings, market applications, technical feasibility, prior work and state of the art, and future development needs.
Date: May 1, 1988
Creator: Lee, V.E. (ed.)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Aging study of Li(Si)/FeS/sub 2/ thermally activated batteries. [Results of accelerated aging at 130/sup 0/C]

Description: A technique for accelerating the aging process of thermally activated batteries that use iron disulfide was developed. In this approach, storage at 130/sup 0/C for one week was assumed equivalent to a shelf life of five years. Some of the batteries stored at 130/sup 0/C were discharged to test for functionality changes, and others were disassembled and carefully analyzed for evidence of deleterious reactions. Some functionality anomalies were observed. The only deleterious reaction observed was… more
Date: May 1, 1980
Creator: Searcy, J. Q. & Neiswander, P. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Kinetic studies on the sulfidation of iron by sulfur bearing low-Btu gases

Description: The use of a low-Btu gas as a reducing agent for iron oxide was shown to be favorable at temperatures of 800/sup 0/C or greater. Little benefit was seen in terms of increased reduction rates at higher pressures (up to 5 atmospheres) or in varying either the H/sub 2/ concentration or CO/CO/sub 2/ ratio, within the range of a low-Btu gas. Sulfidation was found to occur in reaction with iron and not iron oxide. It was found that to avoid contamination of the reduced iron, very low levels of H/sub … more
Date: January 1, 1988
Creator: Joyce, E. L., Jr.; Li, K. & Philbrook, W. O.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Perform research in process development for hydroretorting of Eastern oil shales: Volume 2, Expansion of the Moving-Bed Hydroretorting Data Base for Eastern oil shales

Description: An extensive data base was developed for six Eastern oil shales: Alabama Chattanooga, Indiana New Albany, Kentucky Sunbury, Michigan Antrim, Ohio Cleveland, and Tennessee Chattanooga shales. The data base included the hydroretorting characteristics of the six shales, as well as the retorting characteristics in the presence of synthesis gas and ionized gas. Shale gasification was also successfully demonstrated. Shale fines (20%) can produce enough hydrogen for the hydroretorting of the remaining… more
Date: November 1, 1989
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Groundwater prospecting for sandstone-type uranium deposits: the merits of mineral-solution equilibria versus single element tracer methods. Volume 2

Description: This report presents the results of further research on the groundwater geochemistry of 96 well waters in two uraniferous aquifers in Texas and Wyoming, and is a continuation of the work presented by Chatham et al. (1981). In this study variations in concentrations of U, As, Mo, Se and V were compared with the saturation state of the groundwater with respect to mineral phases of these elements known or expected to occur in each area. The non-radiogenic trace elements exhibited strong redox depe… more
Date: August 1981
Creator: Wanty, R. B.; Langmuir, D. & Chatham, J. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Liquefaction of coals using ultra-fine particle, unsupported catalysts: In situ generation by rapid expansion of supercritical fluid solutions

Description: The program objective is to generate ultra-fine catalyst particles (20 to 400 {Angstrom} in size) and quantify their potential for improving coal dissolution in the solubilization stage of two-stage catalytic-catalytic liquefaction systems. It has been shown that catalyst activity increases significantly with decreasing particle size for particle sizes in the submicron range. Ultra-fine catalyst particle generation will be accomplished using a novel two-step process. First, the severe condition… more
Date: August 1, 1991
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Characteristics of American coals in relation to their conversion into clean-energy fuels. Final report. [1150 samples of US coals]

Description: To further characterize the Nation's coals, the Penn State Coal Sample Bank and Data Base were expanded to include a total of 1150 coal samples. The Sample Bank includes full-seam channel samples as well as samples of lithotypes, seam benches, and sub-seam sections. To the extent feasible and appropriate basic compositional data were generated for each sample and validated and computerized. These data include: proximate analysis, ultimate analysis, sulfur forms analysis, calorific value, macera… more
Date: June 1, 1982
Creator: Spackman, W.; Davis, A.; Walker, P. L.; Lovell, H. L.; Vastola, F. J.; Given, P. H. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Fine particle clay catalysts for coal liquefaction

Description: The efficient production of environmentally acceptable distillate fuels requires catalysts for hydrogenation and cleavage of the coal macromolecules and removal of oxygen, nitrogen, and sulfur heteroatoms. The goal of the proposed research is to develop new catalysts for the direct liquefaction of coal. This type of catalyst consists of fine clay particles that have been treated with reagents which form pillaring structures between the aluminosilicate layers of the clay. The pillars not only ho… more
Date: January 1, 1991
Creator: Olson, E.S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Review of the literature on leachates from coal storage piles

Description: Runoff from coal storage piles associated with coal conversion or combustion facilities may represent a potential source of environmental pollution. This report is an assessment of existing information on coal pile leachate. The assessment indicates that few detailed studies have been conducted to date, and these are limited and the results are highly variable. More detailed long-range studies using various types of coal are recommended. These studies should be carried out both in the laborator… more
Date: January 1, 1978
Creator: Davis, E. C. & Boegly, W. J., Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Influence of chemical characterization of oil shale solids on understanding water quality impacts

Description: Synfuels technologies will yield products and effluents that are a function of the raw material being processed and the process variables. Chemical and mineralogic characterization of solids generated in synfuels production provide valuable insight into health and environmental impacts associated with synfuels processing (coal liquefaction or gasification and shale oil extraction). This report deals with considerations relating to leachate generation from solid wastes, but the suggested researc… more
Date: January 1, 1981
Creator: Peterson, E. J. & Wagner, P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Mathematical model of the chemistry of the dump leaching of chalcopyrite

Description: In a leach dump, chalcopyrite is dissolved by Fe/sup 3 +/ and by O/sub 2/ and H/sup +/. Neither reaction is at equilibrium under operational conditions. The solution contains Fe(III), Fe(II) and Cu(II) in an aqueous sulfate medium with a pH of about 2. The equilibrium concentrations of H/sup +/, OH/sup -/, SO/sub 4//sup 2 -/, HSO/sub 4//sup -/, Fe/sup 3 +/, FeOH/sup 2 +/, Fe(OH)/sub 2//sup +/, Fe/sub 2/(OH)/sub 2//sup 4 +/, FeSO/sub 4//sup +/, Fe(SO/sub 4/)/sub 2//sup -/, FeHSO/sub 4//sup 2 +/,… more
Date: March 1, 1980
Creator: Liddell, K.C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Sulfur and ash reduction potential and selected chemical and physical properties of United States coals. [Contains glossary]

Description: This report presents the washability and comprehensive characterization results of 184 raw coal channel samples, including anthracite, bituminous and lignite coals, collected from the Central Region of the United States. This is the second of a three volume report on the coals of the United States. All the data are presented in six appendices. Statistical techniques and definitions are presented in Appendix A, and a glossary of terms is presented in Appendix B. The complete washability data and… more
Date: February 1, 1991
Creator: Cavallaro, J.A.; Deurbrouck, A.W.; Killmeyer, R.P.; Fuchs, W. (USDOE Pittsburgh Energy Technology Center, PA (USA). Coal Preparation Div.) & Jacobsen, P.S. (Burns and Roe Services Corp., Pittsburgh, PA (USA))
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Exploratory research on solvent refined coal liquefaction. Quarterly technical progress report, January 1, 1980-March 31, 1980

Description: This report summarizes the progress of the Exploratory Research on Solvent Refined Coal Liquefaction project by The Pittsburg and Midway Coal Mining Co.'s Merriam Laboratory for the period January 1, 1980 through March 31, 1980. A series of experiments was conducted with three western coals to study the relationship between coal properties and liquefaction behavior. All three coals were low in iron (0.2 to 0.4%, dry coal basis) and processing in both the SRC I and SRC II modes does not appear t… more
Date: January 1, 1982
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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