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Title Hydrogen donor solvent coal liquefaction process
Creator/Author Aczel, T. ; Plumlee, K.W.
Publication Date1978 Apr 18
OSTI IdentifierOSTI ID: 6707589
Report Number(s)US 4085032
Resource TypePatent
Resource RelationPat. File: Filed date 29 Dec 1976
Subject010405 -- 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 SubjectAROMATICS;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 PublicationUnited States
LanguageEnglish
FormatPages: 8
RightsExxon Research and Engineering Co.
System Entry Date2001 May 13

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