Coal liquefaction process

Patent · Wed Jan 01 00:00:00 EST 1986

OSTI ID:865762

Wright, Charles H ^[1]

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1. Overland Park, KS

A process for the liquefaction of coal wherein raw feed coal is dissolved in recycle solvent with a slurry containing recycle coal minerals in the presence of added hydrogen at elevated temperature and pressure. The highest boiling distillable dissolved liquid fraction is obtained from a vacuum distillation zone and is entirely recycled to extinction. Lower boiling distillable dissolved liquid is removed in vapor phase from the dissolver zone and passed without purification and essentially without reduction in pressure to a catalytic hydrogenation zone where it is converted to an essentially colorless liquid product boiling in the transportation fuel range.

• Research Organization: GULF RESEARCH & DEVELOPMENT CO
• DOE Contract Number: AC22-82PC50001
• Assignee: Gulf Research & Development Company (Pittsburgh, PA); Mitsui SRC Development Co., Ltd. (Tokyo, JP); Ruhrkohle AG (DE)
• Patent Number(s): US 4569749
• OSTI ID: 865762
• Country of Publication: United States
• Language: English

Related Subjects

coal
liquefaction
process
raw
feed
dissolved
recycle
solvent
slurry
containing
minerals
presence
added
hydrogen
elevated
temperature
pressure
boiling
distillable
liquid
fraction
obtained
vacuum
distillation
zone
entirely
recycled
extinction
removed
vapor
phase
dissolver
passed
purification
essentially
reduction
catalytic
hydrogenation
converted
colorless
product
transportation
fuel
range
recycle solvent
catalytic hydrogenation
liquefaction process
elevated temperature
coal liquefaction
liquid product
feed coal
vapor phase
liquid fraction
vacuum distillation
slurry containing
coal mineral
raw feed
hydrogenation zone
recycle coal
coal mine
essentially colorless
fuel range
transportation fuel
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