Process and analytical studies of enhanced low severity co-processing using selective coal pretreatment
Description
This report describes progress on research during the eleventh quarter of this contract dealing with applications of coal pretreatment techniques in coal/oil co-processing and direct hydroliquefaction. The objectives of the project are to investigate various coal pretreatment techniques and to determine the effect of these pretreatment procedures on the reactivity of the coal. Reactivity enhancement will be evaluated under both direct hydroliquefaction and co-processing conditions. Coal conversion utilizing low rank coals and low and severity conditions (reaction temperatures generally less than 350{degrees}C) is the primary focus of the liquefaction experiments, as it is expected that the effect of pretreatment conditions … continued below
Physical Description
15 pages
Creation Information
Baldwin, R. M.; Gaur, S. & Miller, R. L. 1991-06~.
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- United States. Department of Energy. DOE; USDOE, Washington, DC (United States)
Publisher
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Colorado School of Mines. Chemical and Petroleum Refining Engineering Department.
Publisher Info: Colorado School of Mines, Golden, CO (United States). Dept. of Chemical and Petroleum Refining EngineeringPlace of Publication: Golden, Colorado
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Titles
- Main Title: Process and analytical studies of enhanced low severity co-processing using selective coal pretreatment
- Serial Title: Process and Analytical Studies of Enhanced Low Severity Co-Processing Using Selective Coal Pretreatment Progress Report
Description
This report describes progress on research during the eleventh quarter of this contract dealing with applications of coal pretreatment techniques in coal/oil co-processing and direct hydroliquefaction. The objectives of the project are to investigate various coal pretreatment techniques and to determine the effect of these pretreatment procedures on the reactivity of the coal. Reactivity enhancement will be evaluated under both direct hydroliquefaction and co-processing conditions. Coal conversion utilizing low rank coals and low and severity conditions (reaction temperatures generally less than 350{degrees}C) is the primary focus of the liquefaction experiments, as it is expected that the effect of pretreatment conditions and the attendant reactivity enhancement will be greatest for these coals and at these conditions. This document presents a summary of results for the first set of a series of runs intended to simulate operation of a two-stage integrated liquefaction reactor train. These studies were designed to investigate the effect of the severity of the first stage liquefaction process on the required severity and resulting yields from the second stage. Process conditions were varied between thermal and catalytic for both stages, and from temperatures of 350 to 400{degrees}C at a nominal residence time of 30 minutes. These data will provide background information that will be useful in comparing the effect of mild chemical pretreatment on the yield (quantity) and quality of distillate from the simulated two-stage reaction scheme. 6 refs., 4 figs., 2 tabs.
Physical Description
15 pages
Notes
OSTI; NTIS; GPO Dep.
Subjects
Keywords
- Alkanes
- Aluminium Compounds
- Aluminium Oxides
- Aromatics
- Bituminous Coal
- Black Coal
- Carbonaceous Materials
- Catalytic Effects
- Chalcogenides
- Chemical Reactors
- Coal
- Coal Liquefaction
- Coal Preparation
- Coprocessing
- Distillates
- Document Types
- Elements
- Energy Sources
- Evaluation
- Extraction
- Fossil Fuels
- Fuels
- Furans
- Heterocyclic Compounds
- Hexane
- Hydroaromatics
- Hydrocarbons
- Liquefaction
- Materials
- Metals
- Molybdenum
- Nickel
- Organic Compounds
- Organic Oxygen Compounds
- Oxides
- Oxygen Compounds
- Petroleum
- Processing
- Progress Report
- Separation Processes
- Simulation
- Solvent Extraction
- Subbituminous Coal
- Tetrahydrofuran
- Tetralin
- Thermochemical Processes
- Transition Elements 010405* -- Coal, Lignite, & Peat-- Hydrogenation & Liquefaction
- Yields
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- Other: DE92001638
- Report No.: DOE/PC/88812-T9
- Grant Number: AC22-88PC88812
- Digital Object Identifier: https://doi.org/10.2172/5146991
- Office of Scientific & Technical Information Report Number: 5146991
- Archival Resource Key: ark:/67531/metadc1057275
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Baldwin, R. M.; Gaur, S. & Miller, R. L. Process and analytical studies of enhanced low severity co-processing using selective coal pretreatment, report, 1991-06~; Golden, Colorado. (https://digital.library.unt.edu/ark:/67531/metadc1057275/: accessed June 13, 2026), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.