Coal liquefaction process

Patent · Wed Jan 01 04:00:00 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

/208/
added
boiling
catalytic
catalytic hydrogenation
coal
coal liquefaction
coal mine
coal mineral
colorless
containing
converted
dissolved
dissolver
distillable
distillation
elevated
elevated temperature
entirely
essentially
essentially colorless
extinction
feed
feed coal
fraction
fuel
fuel range
hydrogen
hydrogenation
hydrogenation zone
liquefaction
liquefaction process
liquid
liquid fraction
liquid product
minerals
obtained
passed
phase
presence
pressure
process
product
purification
range
raw
raw feed
recycle
recycle coal
recycle solvent
recycled
reduction
removed
slurry
slurry containing
solvent
temperature
transportation
transportation fuel
vacuum
vacuum distillation
vapor
vapor phase
zone