Combined coal liquefaction-gasification process

Patent · Tue May 20 04:00:00 EDT 1980

OSTI ID:6002718

Carr, N L; Schleppy, R J; Schmid, B K; Shah, Y T

This invention relates to a combination coal liquefaction-gasification process wherein hydrocarbonaceous mineral residue-containing slurry from the liquefaction zone is recycled to the liquefaction zone and all non-recycled hydrocarbonaceous mineral residue-containing slurry is passed to a gasification zone for conversion to synthesis gas to supply hydrogen for the liquefaction zone. It has now been discovered that in this process a surprisingly high reaction selectivity in favor of the desired distillate oil product is achieved by combining low liquefaction zone residence times and relatively high rates of recycle of mineral residue-containing slurry compared to feed coal rate. Under these conditions the yield of the desired distillate oil product can be increased to an unexpectedly high level while the yields of both higher and lower boiling products are each being decreased and while hydrogen consumption is being reduced.

• Assignee: Gulf Research and Development Co
• Patent Number(s): US 4203823
• OSTI ID: 6002718
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010404* -- Coal
Lignite
& Peat-- Gasification
010405 -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
CHEMICAL REACTION KINETICS
COAL GASIFICATION
COAL LIQUEFACTION
DISPERSIONS
ELEMENTS
FLUIDS
FUEL CYCLE
GASES
GASIFICATION
HYDROGEN
KINETICS
LIQUEFACTION
MIXTURES
NONMETALS
OXIDES
OXYGEN COMPOUNDS
REACTION KINETICS
SHIFT PROCESSES
SLURRIES
SUSPENSIONS
SYNTHESIS GAS
THERMOCHEMICAL PROCESSES
YIELDS