Coal liquefaction process

Patent · Tue Feb 24 00:00:00 EST 1981

OSTI ID:5841079

Long, R B; Gorbaty, M L; Schlosberg, R H

In this integrated coal pretreatment, liquefaction, and gasification process, particulate coal is contacted with a vapor-phase hydrogen-donor solvent to swell the coal particles and then subjected to coal liquefaction at relatively low temperatures. The solid residue of the liquefaction stage undergoes pyrolysis at high temperatures to produce an additional amount of oil. The solid residue of the pyrolysis stage is then gasified by treatment with steam and a molecular-oxygen-containing gas to produce a hydrogen-containing gas.

• Assignee: Exxon Research and Engineering Co.
• Patent Number(s): US 4252633
• OSTI ID: 5841079
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
COAL GASIFICATION
COAL LIQUEFACTION
DESIGN
HYDROGEN
PYROLYSIS
STEAM
CHEMICAL REACTIONS
DECOMPOSITION
ELEMENTS
GASIFICATION
LIQUEFACTION
NONMETALS
THERMOCHEMICAL PROCESSES
010404* - Coal
Lignite
& Peat- Gasification
010405 - Coal
Lignite
& Peat- Hydrogenation & Liquefaction