Process for producing methane from gas streams containing carbon monoxide and hydrogen

Patent · Tue Dec 30 04:00:00 EST 1980

OSTI ID:6553921

Frost, A C

Carbon monoxide-containing gas streams are passed over a catalyst capable of catalyzing the disproportionation of carbon monoxide so as to deposit a surface layer of active surface carbon on the catalyst essentially without formation of inactive coke thereon. The surface layer is contacted with steam and is thus converted to methane and co2, from which a relatively pure methane product may be obtained. While carbon monoxide-containing gas streams having hydrogen or water present therein can be used only the carbon monoxide available after reaction with said hydrogen or water is decomposed to form said active surface carbon. Although hydrogen or water will be converted, partially or completely, to methane that can be utilized in a combustion zone to generate heat for steam production or other energy recovery purposes, said hydrogen is selectively removed from a co-h2-containing feed stream by partial oxidation thereof prior to disproportionation of the co content of said stream.

• Assignee: Union Carbide Corp
• Patent Number(s): US 4242105
• OSTI ID: 6553921
• Country of Publication: United States
• Language: English

Related Subjects

090121* -- Hydrocarbon Fuels-- Chemical Synthesis-- (1976-1989)
10 SYNTHETIC FUELS
ALKANES
CARBON
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CATALYSTS
CHALCOGENIDES
CHEMICAL REACTIONS
COAL GASIFICATION
ELEMENTS
FLUIDS
GASES
GASIFICATION
HYDROCARBONS
HYDROGEN
METALS
METHANATION
METHANE
NICKEL
NONMETALS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
STEAM
SYNTHESIS
SYNTHESIS GAS
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENTS