Coal liquefaction process

Patent · Tue Sep 27 04:00:00 EDT 1977

OSTI ID:6773313

Plumlee, K W; Vernon, L W

A process for liquefying a particulate coal feed to produce useful petroleum-like liquid products by steps which include: (a) contacting, in a liquefaction zone, said coal feed with a hydrogen donor solvent at temperature and pressure sufficient to hydroconvert and liquefy the coal, (b) separating the product from the liquefaction zone by distillation into fractions inclusive of a liquid solvent fraction which contains at least 30 weight percent, and preferably at least 50 weight percent hydrogen donor compounds, particularly those fractions boiling within about the 350/sup 0/-850/sup 0/F range, and preferably within about the 400/sup 0/-700/sup 0/F range, (c) hydrotreating said liquid solvent fraction in a hydrogenation zone in the presence of a quinone catalyst, and (d) recycling the hydrogenated liquid solvent mixture to said coal liquefaction zone.

• Assignee: Exxon Research and Engineering Co.
• Patent Number(s): US 4051012
• OSTI ID: 6773313
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
CHEMICAL REACTIONS
COAL LIQUEFACTION
COAL LIQUIDS
DISTILLATION
FRACTIONATION
HYDROGENATION
LIQUEFACTION
RECYCLING
SEPARATION PROCESSES