C - Chemistry – Metallurgy – 10 – G
Patent
C - Chemistry, Metallurgy
10
G
196/5.3
C10G 1/06 (2006.01) C10G 1/00 (2006.01) C10G 1/04 (2006.01)
Patent
CA 1194828
ABSTRACT OF THE DISCLOSURE "COAL LIQUEFACTION PROCESS WITH CONTROLLED RECYCLE OF ETHYL ACETATE-INSOLUBLES" A process for increasing he conversion of coal to ethyl acetate-soluble products comprising: (a) heating a slurry comprising a solvent and particulate coal in a dissolution zone to produce a first effluent slurry comprising ethyl acetate-soluble liquid components and ethyl acetate-insolubles; (b) contacting at least a portion of said first effluent slurry with hydrogen in a reaction zone in the presence of an externally-supplied hydrogenation catalyst under hydrogenation conditions to produce a second effluent slurry which comprises ethyl acetate-soluble liquid components and ethyl acetate-insolubles, said ethyl acetate insolubles comprising organic components and inorganic components; (c) partitioning said ethyl acetate-insolubles in at least a portion of said second effluent slurry to provide a solids-rich fraction containing ethyl acetate-insolubles enriched in inorganic components and a solids-lean fraction containing ethyl acetate insolubles enriched in organic components; and (d) recycling at least a portion of said solids-lean fraction to said dissolution zone, said recycle stream containing ethyl acetate-insolubles in an amount (1)suf- ficient to increase substantially the conversion of said coal to ethyl acetate-so1uble components and (2) insuf- ficient to cause the hydrogenation fouling rate of said catalyst to exceed 0.3°C per hour.
413542
Beret Samil
Kuehler Christopher W.
Chevron Research And Technology Company
Smart & Biggar
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