Integrated catalytic coal devolatilization and steam gasification process

Patent · Tue Sep 29 04:00:00 EDT 1981

OSTI ID:5563125

Wesselhoft, R D; Ryan, D F

This catalytic devolatilization/gasification process produces hydrocarbon liquids and a methane-containing gas from carbonaceous feed solids by contacting the solids with a mixture of gases containing carbon monoxide and hydrogen in a devolatilization zone at a relatively low temperature in the presence of a carbon-alkali metal catalyst. The devolatilization zone effluent is treated to condense out hydrocarbon liquids; a portion of the remaining methane-rich gas is steam-reformed to produce the carbon monoxide and hydrogen needed in the devolatilization zone. The char produced in the devolatilization zone reacts with steam in a gasification zone in the presence of a carbon-alkali metal catalyst; the resultant raw product gas is treated to recover a methane-containing gas.

• Assignee: Exxon Research and Engineering Co.
• Patent Number(s): US 4292048
• OSTI ID: 5563125
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010404* -- Coal
Lignite
& Peat-- Gasification
ALKANES
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CATALYSTS
CHALCOGENIDES
COAL GASIFICATION
DEVOLATILIZATION
GASIFICATION
HYDROCARBONS
METHANE
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PRODUCTION
STEAM
THERMOCHEMICAL PROCESSES