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in subjects: "Thermochemical Processes 010405* -- Coal, Lignite, & Peat-- Hydrogenation & Liquefaction"  
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High temperature ceramic membrane reactors for coal liquid upgrading

Description: In this project we intend to study a novel process concept, i.e, the use of ceramic membranes reactors in upgrading of coal derived liquids. Membrane reactors have been used in a number of catalytic reaction processes in order to overcome the limitations on conversion imposed by thermodynamic equilibrium. They have, furthermore, the inherent capability for combining reaction and separation in a single step. Thus they offer promise for improving and optimizing yield, selectivity and performance … more
Date: January 1, 1992
Creator: Tsotsis, T.T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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High temperature ceramic membrane reactors for coal liquid upgrading

Description: In this project we will study a novel process concept, i.e., the use of ceramic membrane reactors in upgrading of coal model compounds and coal derived liquids. In general terms, the USC research team is responsible for constructing and operating the membrane reactor apparatus and for testing various inorganic membranes for the upgrading of coal derived asphaltenes and coal model compounds. The USC effort will involve the principal investigator of this project and two graduate research assistan… more
Date: January 1, 1992
Creator: Tsotsis, T.T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Critical Technology List update. Final technical report

Description: ICRC has reviewed and updated its List of critical technology. The List comprises all proposed SRC-I Demonstration Plant equipment whose use has been determined to involve some degree of potential safety, performance, or environmental risk. ICRC has subjected equipment on the Critical Technology c to special technical review to ensure the highest possible level of quality and lowest cost commensurate with acceptable overall risks. Equipment or equipment systems still considered to be high risk … more
Date: March 1, 1983
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Characterization of carbonaceous materials using extraction with supercritical pentane

Description: The use of carbonaceous adsorbents is limited by irreversible adsorption of some compounds so the use of supercritical pentane as an extracting solvent was examined. Carbon black appeared to be broken down slowly, but continuously, by the penane. To see if other types of carbon behaved similarly, high purity graphite, technical grade graphites, active carbons, and charcoals were examined. The extracts were characterized by uv spectroscopy, packed column chromatography using flame ionization and… more
Date: May 30, 1980
Creator: Fetzer, J.C.; Graham, J.A.; Arrendale, R.R.; Klee, M.S. & Rogers, L.B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Heavy recycle solvent studies in two-stage coal liquefaction. Final technical report, September 1, 1982-December 30, 1983

Description: The objective of this program has been to study the chemistry of the components with high boiling points in a direct coal liquefaction recycle solvent and to identify those components which lead to higher overall yields and improved product stability in the initial coal dissolution step of direct coal liquefaction processes. The major conclusions are: -454 C recycle solvent is primarily aromatic hydrocarbons (73%) and contains almost no asphaltenes; +454 C recycle solvent is primarily asphalten… more
Date: January 10, 1984
Creator: Longanbach, J. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Coal liquefaction process streams characterization and evaluation

Description: This study was designed to demonstrate the use of two different methods for the separation of direct coal liquefaction process- derived materials into defined fractions. The two methods, liquid chromatography (LC) and supercritical fluid extraction (SFE), were employed to determine if the same or complementary information could be obtained by the two methods. The primary objective was to evaluate the potential of supplementing or replacing the conventional LC method with SFE and in so doing to … more
Date: January 1, 1992
Creator: Taylor, L. T.; Hellgeth, J. W. & Sequeira, A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Superacid Catalyzed Coal Conversion Chemistry. 1st and 2nd Quarterly Technical Progress Reports, September 1, 1983-March 30, 1984. [Model Compound Consisting of 2 Benzene Rings Connected With Various Bridging Units Such as Alkylidene, Ether, Sulfide, Etc]

Description: In our laboratories we have previously developed a mild coal conversion process. This involves the use of a superacid system consisting of HF and BF/sub 3/ in presence of hydrogen and/or a hydrogen donor solvent. In order to understand the chemistry involved in the process of depolymerization of coal by the HF:BF/sub 3/:H/sub 2/ system we are carrying out a systematic study of a number of coal model compounds. The model compounds selected for present study have two benzene rings connected with … more
Date: January 1, 1984
Creator: Olah, G.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Anaerobic bioprocessing of low-rank coals

Description: The overall goal of this project is to find biological methods to remove carboxylic functionalities from low-rank coals and to assess the properties of the modified coal towards coal liquefaction. The main objectives for this quarter were: (1) continuation of microbial consortia development and maintenance, (2) crude enzyme study using best decarboxylating organisms, (3) decarboxylation of lignite, demineralized Wyodak coal and model polymers, and (4) characterization of biotreated coals.
Date: April 15, 1992
Creator: Jain, M. K.; Narayan, R. & Han, O.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Development of a correlation between slurry oil composition and process performance. Topical report 1. Analyses of slurry recycle oils from H-Coal PDU Run 5

Description: Daily samples of the slurry recycle oil from the 30-day H-Coal PDU Run 5 (Syncrude mode, Illinois 6 coal) were analyzed by /sup 1/H-NMR spectroscopy GS/MS, and liquid chromatographic techniques. The recycle oils composition in PDU Run 5 reached an initial steady-state at about day 12, but this was upset when the hydrogen partial pressure was increased on day 20. The recycle oil composition was again approaching a steady-state by the end of the run. The distillates increased in aromaticity durin… more
Date: April 1, 1980
Creator: Burke, F. P.; Winschel, R. A. & Pochapsky, T. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Selective solvent absorption in coal conversion

Description: The objectives of this project are: (1) to determine the importance of the presence of added hydrogen donor compounds within the coal in the first stage of direct liquefaction processes; and (2) to determine the composition of the solvent absorbed by and present within the coal in the first stage of direct coal liquefaction.
Date: April 1, 1992
Creator: Larsen, J. W.; Lapucha, A.; Lazarov, L. & Amui, J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Well installation and boring report for the proposed SRC-1 facility at Newman, Kentucky

Description: Dames and Moore conducted a geohydrologic investigation at the proposed Solvent-Refined Coal (SRC-I) Demonstration Plant Site. Task 1 involved drilling 14 borings to aid in further determining the location and extent of a clay body known to lie along the floodplain at the southern edge of the site. Task 2 included installation of 13 stainless steel groundwater observation wells throughout the site in order to expand the groundwater flow information provided by 10 existing wells.
Date: January 1, 1984
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Systems studies of coal-conversion processes using a reference simulator. Final report, March 12, 1976-August 12, 1979

Description: Methodology and general purpose software were developed which do allow computer-aided design and analysis of large scale coal conversion processes. The LINBAL package for larger scale balance calculations was demonstrated to be quick and efficient in solving problems involving over 100 streams, 20 species, and 80 or more flowsheet units. The LSP simulation package embodies constraint handling, recycle calculation, and information management features which are an advance of the state of the art.… more
Date: December 1, 1979
Creator: Reklaitis, G.V.; Sood, M.K.; Soni, Y.; Overturf, B.W.; Wiede, W.; Clark, S. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Coal liquefaction catalyst development. Quarterly progress report No. 3, October 1-December 31, 1979

Description: Catalytic baseline runs continued with HDS-1442A in order to improve our baseline statistics as well as to monitor batch reactor performance. Testing of several new catalyst formulations was completed. No promising candidates for testing in the continuous aging unit were identified. The new SRC-II slurry oil was evaluated as a hydrogen donor liquefaction solvent. Our data indicates that the SRC-II heavy distillate oil is not as effective a hydrogen donor solvent as the hydrogenated anthracene o… more
Date: January 1, 1980
Creator: Kim, D. K.; Pellet, R. J. & Mahoney, J. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Coal liquefaction process streams characterization and evaluation

Description: This study clearly demonstrated the usefulness of liquid- and solid-state {sup 13}C- and {sup 1}H-NMR for the examination of process-derived materials from direct coal liquefaction. The techniques can provide data not directly obtainable by other methods to examine the saturation of aromatic rings and to determine the modes of hydrogen utilization during coal liquefaction. In addition, these methods can be used to infer the extent of condensation and retrograde reactions occurring in the direct… more
Date: November 1, 1991
Creator: Miknis, F.P. (Western Research Inst., Laramie, WY (United States))
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Coal liquefaction process streams characterization and evaluation

Description: CONSOL R D is conducting a three-year program to characterize process and product streams from direct coal liquefaction process development projects. The program objectives are two-fold: (1) to obtain and provide appropriate samples of coal liquids for the evaluation of analytical methodology, and (2) to support ongoing DOE-sponsored coal liquefaction process development efforts. The two broad objectives have considerable overlap and together serve to provide a bridge between process developmen… more
Date: March 1, 1992
Creator: Robbins, G.A.; Brandes, S.D.; Winschel, R.A. & Burke, F.P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Coal feeder development, Phase III. Progress report, 1 July 1978-31 December 1978

Description: This report covers Phase III effort on the Foster-Miller Associates, Inc. Coal Feeder Development Program from 1 July 1978 to 31 December 1978. At the end of this period, the Linear Pocket Feeder had been operated for 234 hours. Problems with the unit have been limited to excessive wear of the conveyor joints. This problem is expected to be relatively easy to solve. Design, fabrication, and assembly of the 500 psig Centrifugal Feeder prototype was completed, and testing of the feeder was initia… more
Date: June 1, 1979
Creator: Harding, J. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Holdup correlations in slurry-solid fluidized beds

Description: The use of slurry-solids fluid beds plays an important role in the development of synthetic fuels and the hydrogen processing of petroleum resids. In the H-Coal process in particular, coal oil slurries are processed over extrudates of hydrodesulfurization catalyst. The objective of this note is to present a model which describes the volume fraction occupied by the slurry phase. The accurate prediction of the liquid holdup is important not only for the calculation of the bed height in liquid sol… more
Date: January 1, 1980
Creator: Vasalos, I. A.; Rundell, D. N.; Megiris, K. E. & Tjatjopoulos, G. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Exploratory research on solvent refined coal liquefaction. Quarterly technical progress report, April 1-June 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 Company's Merriam Laboratory for the period April 1, 1979 through June 30, 1979. Experimental work included a number of short residence time runs, but discussion of that work has been delayed until a later report. Experimental work reported focuses on an investigation of the decline in solvent quality experienced by the Wilsonville Pilot Plant dur… more
Date: July 1, 1980
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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SRC-Water Slurry Rheology. Final Technical Report

Description: SRC-water slurries exhibit properties that qualify them for use as fuel in conventional oil-fired combustion facilities. However, to date, the slurries tested have shown storage instability, which requires constant agitation and recirculation to avoid sedimentation in the storage tanks. High viscosities of the material being evaluated hampered the test performance. A program was instituted to better understand the variables responsible for viscosity and static stability of these slurries. Effec… more
Date: February 1, 1984
Creator: Tewari, K. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Demonstration plant supplementary technical studies section 10-confidence analysis. SRC-II demonstration project, phase zero, task number 1, deliverable number 3

Description: The Gulf Management Sciences Group (GMSG) in Pittsburgh was asked to provide assistance in performing a confidence analysis for the SRC-II demonstration plant as required by the Department of Energy. Specifically, the contract says to discuss confidence levels for plant operating and capital costs; plant operability and technical risk. It was decided that the best way to obtain estimates for these variables would be through interviews of people with substantial experience in the field. Each sub… more
Date: July 31, 1979
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Refining and upgrading of synfuels from coal and oil shales by advanced catalytic processes. Sixth interim report Task 9: hydrotreating 400/sup 0/F+ SRC-II oil for biological studies

Description: 400/sup 0/F+ SRC-II oil derived from Pittsburgh Seam coal was hydrotreated to provide DOE samples for subsequent biological testing at the Oak Ridge National Laboratory. Samples containing about 500 ppM nitrogen, 2000 ppM nitrogen, and 5000 ppM nitrogen were prepared. These samples do not represent finished products, but conditions were selected to provide a wide range of processing severities. The feedstock was somewhat higher boiling and more difficult to hydrotreat than another 400/sup 0/F+ … more
Date: April 1, 1982
Creator: Sullivan, R. F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Development and application of analytical techniques to chemistry of donor solvent liquefaction. Final report, August 31, 1977-December 31, 1979

Description: The scope of this project was to develop and apply analytical techniques for the characterization of coal conversion products. Solvent-refined coal served as the coal-derived material for the duration of the study. The investigation has focused primarily in the areas of separations and nuclear magnetic resonance spectroscopy. Highlights of the twenty-eight month study are listed and followed by a brief synopsis of the major findings.
Date: January 1, 1979
Creator: Squires, A. M.; Dorn, H. C.; Taylor, L. T.; Dillard, J. G. & Rony, P. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Chemical and biological effects of heavy distillate recycle in the SRC-II process

Description: Recent work from the Merriam Laboratory continuous coal liquefaction units shows that heavy distillate from the SRC-II process can be recycled to extinction, and hence a distillate product boiling entirely below 310/sup 0/C (590/sup 0/F) (or other selected boiling points) is feasible. In these runs distillate yield was not reduced; gas make was unaffected; and hydrogen consumption was increased only slightly, in keeping with the generally higher hydrogen content of lighter end products. Total d… more
Date: December 1, 1983
Creator: Wilson, B. W.; Pelroy, R. A.; Anderson, R. P. & Freel, J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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