Two-stage coal liquefaction process with petroleum-derived coal solvents

Patent · Tue May 18 00:00:00 EDT 1982

OSTI ID:5150853

Dahlberg, A J; Rosenthal, J W

An improved coal liquefaction process is disclosed wherein subdivided coal is substantially dissolved in a petroleum-derived solvent in the presence of added hydrogen in a non-catalytic dissolving stage at a temperature in the range 400-480 degrees C, thereby forming a mixture of dissolved coal, solvent and insoluble solids. The effluent mixture of solvent, dissolved coal and insoluble solids from the dissolver is contacted with a hydrocracking catalyst under hydrocracking conditions at a reduced temperature below 425 degree C, resulting in a product having a normally liquid portion which may be used directly as a low-sulfur, low-nitrogen fuel oil.

• Assignee: Chevron Research Co
• Patent Number(s): US 4330390
• OSTI ID: 5150853
• Resource Relation: Patent File Date: Filed date 14 Feb 1979; Other Information: PAT-APPL-012185
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
COAL LIQUEFACTION
CATALYTIC CRACKING
HYDROCRACKING
HYDROGEN
PETROLEUM DISTILLATES
SOLVENTS
CHEMICAL REACTIONS
CRACKING
DECOMPOSITION
DISTILLATES
ELEMENTS
ENERGY SOURCES
FOSSIL FUELS
FUELS
LIQUEFACTION
NONMETALS
PETROLEUM
PETROLEUM FRACTIONS
PYROLYSIS
THERMOCHEMICAL PROCESSES
010405* - Coal
Lignite
& Peat- Hydrogenation & Liquefaction