C - Chemistry – Metallurgy – 10 – G
Patent
C - Chemistry, Metallurgy
10
G
196/5.8
C10G 1/08 (2006.01) B01D 11/02 (2006.01) C10G 1/00 (2006.01)
Patent
CA 1229811
ABSTRACT A coal liquefaction process for producing hydrocarbon liquid and gas products wherein fine particulate solids are removed in-situ from the reactor effluent slurry liquid by using a process-derived solvent vapor at supercritical con- ditions. In the process, a coal-oil feed is liquefied and hydrogenated at 650-900°F temperature, and the resulting liquid slurry fraction containing fine particulate solids is contacted with a process-derived solvent vapor fraction having normal boiling range of 250-400°F at supercritical temperature to dissolve and extract substantially all the hydrocarbon liquid fraction and separate the particulate solids contained therein. The resulting solvent vapor with dissolved coal liquid fraction is pressure-reduced and distilled to recover the needed solvent fraction and provide a hydrocarbon liquid fraction product. The coal liquefaction step is preferably catalytic. Also if desired, the super- critical solvent vapor extraction step can be used inter- mediate two coal liquefaction reaction zones connected in series to produce the solids-free hydrocarbon liquid and has products.
447948
Gowling Lafleur Henderson Llp
Hri Inc.
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