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

Patent ·
OSTI ID:863756

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.

Research Organization:
Union Carbide Corporation, New York, NY (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC03-78CS40177
Assignee:
Union Carbide Corporation (New York, NY)
Patent Number(s):
4,242,105
Application Number:
06/083473
OSTI ID:
863756
Country of Publication:
United States
Language:
English

References (1)

II. Ignition phenomena in mixtures of carbon monoxide and oxygen sensitized by hydrogen
  • Buckler, E. J.; Wreyford Norrish, Ronald George
  • Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, Vol. 167, Issue 930, p. 292-318 https://doi.org/10.1098/rspa.1938.0133
journal September 1938

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Related Subjects

-containing
/48/423/518/585/
active
active surface
available
capable
carbon
carbon monoxide
carbon monoxide-containing
catalyst
catalyst capable
catalyzing
co--h
coke
combustion
combustion zone
completely
contacted
containing
containing carbon
containing gas
content
converted
decomposed
deposit
disproportionation
energy
energy recovery
essentially
feed
feed stream
form
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generate
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hydrogen
inactive
inactive coke
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methane
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monoxide
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monoxide-containing gas
obtained
oxidation
oxide-containing gas
partial
partial oxidation
partially
passed
prior
process
producing
producing methane
product
production
pure
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reaction
recovery
relatively
relatively pure
removed
selectively
selectively remove
selectively removed
steam
stream
streams
streams containing
surface
surface carbon
surface layer
therein
thereon
utilized
water
zone