Coal liquefaction process

Patent · Mon Feb 10 23:00:00 EST 1986

OSTI ID:7260509

Wright, C H

A process is described 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. 1 fig.

• DOE Contract Number: AC22-82PC50001
• Assignee: Gulf Research Development Co., Pittsburgh, PA (United States); Mitsui SRC Development Co., Ltd., Tokyo (Japan); Ruhrkohle AG (Germany)
• Patent Number(s): A; US 4569749
• Application Number: PPN: US 6-642579
• OSTI ID: 7260509
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010402 -- Coal
Lignite
& Peat-- Purification & Upgrading
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
AUTOMOTIVE FUELS
CHEMICAL ENGINEERING
CHEMICAL REACTIONS
COAL LIQUEFACTION
COAL LIQUIDS
DISPERSIONS
ENGINEERING
FLUIDS
FUELS
HYDROGENATION
LIQUEFACTION
LIQUIDS
MIXTURES
PROCESS SOLUTIONS
PRODUCTION
RECYCLING
SOLUTIONS
THERMOCHEMICAL PROCESSES