Process for coal liquefaction employing a superior coal liquefaction process solvent

Patent · Tue Aug 02 00:00:00 EDT 1983

OSTI ID:5529641

Lebowitz, H E; Stewart, N C; Weber, W H

A process is disclosed for producing a superior coal liquefaction solvent. A particulate coal is admixed with a distillable aromatic hydrocarbon solvent and liquefied under predetermined conditions to form coal liquefaction products comprising distillable and substantially nondistillable soluble coal products and insoluble coal products. The distillable solvent and distillable soluble coal products are separated from the remaining liquefaction products. The remainder is admixed with a deashing solvent and separated under elevated temperature and pressure conditions in several separation zones into an insoluble coal products fraction, a light soluble coal products fraction a heavy soluble coal products fraction. A portion of the light soluble coal products fraction is admixed with the recovered distillable solvent to form the coal liquefaction solvent. The light soluble coal products comprise at least about 15 percent and preferably 25 to 50 percent of the coal liquefaction solvent.

• Assignee: Electric Power Research Institute, Inc.
• Patent Number(s): US 4396488
• OSTI ID: 5529641
• Resource Relation: Patent File Date: Filed date 8 Oct 1981; Other Information: PAT-APPL-309592
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
COAL LIQUEFACTION
SOLVENTS
PRODUCTION
AROMATICS
COAL
DISTILLATION
HYDROCARBONS
PARTICULATES
SLURRIES
CARBONACEOUS MATERIALS
DISPERSIONS
ENERGY SOURCES
FOSSIL FUELS
FUELS
LIQUEFACTION
MATERIALS
MIXTURES
ORGANIC COMPOUNDS
PARTICLES
SEPARATION PROCESSES
SUSPENSIONS
THERMOCHEMICAL PROCESSES
010405* - Coal
Lignite
& Peat- Hydrogenation & Liquefaction