Bibliographic Citation
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Title | Hydrogen donor solvent coal liquefaction process |
Creator/Author | Aczel, T. ; Plumlee, K.W. |
Publication Date | 1978 Apr 18 |
OSTI Identifier | OSTI ID: 6707589 |
Report Number(s) | US 4085032 |
Resource Type | Patent |
Resource Relation | Pat. File: Filed date 29 Dec 1976 |
Subject | 010405 -- Coal, Lignite, & Peat-- Hydrogenation & Liquefaction; ;CATALYSTS-- CHEMICAL PREPARATION;CATALYSTS-- RECOVERY;COAL LIQUIDS-- FRACTIONATION;COAL LIQUIDS-- HYDROGENATION;EXXON LIQUEFACTION PROCESS-- CATALYSTS; CARBOXYLIC ACIDS;COAL LIQUEFACTION;HYDROGEN PEROXIDE;QUINONES |
Related Subject | AROMATICS;CHEMICAL REACTIONS;COAL LIQUEFACTION;HYDROGEN COMPOUNDS;LIQUEFACTION;ORGANIC ACIDS;ORGANIC COMPOUNDS;ORGANIC OXYGEN COMPOUNDS;OXYGEN COMPOUNDS;PEROXIDES;SEPARATION PROCESSES;SYNTHESIS;THERMOCHEMICAL PROCESSES |
Description/Abstract | An indigenous aqueous stream can be treated and then recycled, with a suitable donor solvent, to a coal liquefaction zone to catalyze the reaction.^In one embodiment, an aqueous fraction is separated from a coal liquefaction zone effluent, a quinone solids portion of the separated fraction is concentrated within the liquid by evaporation of water therefrom to form a slurry, and the slurry is then recycled to the coal liquefaction zone to catalyze the coal liquefaction reaction.^Naturally occurring phenols and alkyl substituted phenols, also found within the aqueous stream, can also be converted to quinones, if desired, by a chemical reaction which favors the addition of hydroxyl constitutents to the phenols to form dihydroxy benzenes.^Quinones, as disclosed in copending Applications Ser.^No. 686,813 now U.S.^Pat.^No. 4,049,536; Ser.^No. 686,814 now U.S.^Pat.^No. 4,049,537; Ser.^No. 686,827 now U.S.^Pat.^No. 4,051,012 and Ser.^No. 686,828, K.W.^Plumlee et al, filed May 17, 1976, are suitable hydrogen transfer catalysts. |
Country of Publication | United States |
Language | English |
Format | Pages: 8 |
Rights | Exxon Research and Engineering Co. |
System Entry Date | 2001 May 13 |
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