Methanation of gas streams containing carbon monoxide and hydrogen
Patent
·
OSTI ID:864684
Carbon monoxide-containing gas streams having a relatively high concentration of hydrogen are pretreated so as to remove the hydrogen in a recoverable form for use in the second step of a cyclic, essentially two-step process for the production of methane. The thus-treated streams are then passed over a catalyst to deposit a surface layer of active surface carbon thereon essentially without the formation of inactive coke. This active carbon is reacted with said hydrogen removed from the feed gas stream to form methane. The utilization of the CO in the feed gas stream is appreciably increased, enhancing the overall process for the production of relatively pure, low-cost methane from CO-containing waste gas streams.
- Research Organization:
- Union Carbide Corporation, Danbury, CT (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC03-78CS40177
- Assignee:
- Union Carbide Corporation (Danbury, CT)
- Patent Number(s):
- 4,400,575
- Application Number:
- 06/224,440
- OSTI ID:
- 864684
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
/585/48/
active
active carbon
active surface
appreciably
carbon
carbon monoxide
carbon monoxide-containing
carbon thereon
catalyst
co-containing
coke
concentration
containing
containing carbon
containing gas
containing waste
cyclic
deposit
enhancing
essentially
essentially two-step
feed
feed gas
form
form methane
formation
gas
gas stream
gas streams
hydrogen
inactive
inactive coke
increased
layer
low-cost
methanation
methane
monoxide
monoxide-containing
monoxide-containing gas
overall
overall process
oxide-containing gas
passed
pretreated
process
production
pure
reacted
recoverable
recoverable form
relatively
relatively pure
remove
removed
step
step process
stream
streams
streams containing
surface
surface carbon
surface layer
thereon
thereon essentially
thus-treated
two-step
two-step process
utilization
waste
waste gas
active
active carbon
active surface
appreciably
carbon
carbon monoxide
carbon monoxide-containing
carbon thereon
catalyst
co-containing
coke
concentration
containing
containing carbon
containing gas
containing waste
cyclic
deposit
enhancing
essentially
essentially two-step
feed
feed gas
form
form methane
formation
gas
gas stream
gas streams
hydrogen
inactive
inactive coke
increased
layer
low-cost
methanation
methane
monoxide
monoxide-containing
monoxide-containing gas
overall
overall process
oxide-containing gas
passed
pretreated
process
production
pure
reacted
recoverable
recoverable form
relatively
relatively pure
remove
removed
step
step process
stream
streams
streams containing
surface
surface carbon
surface layer
thereon
thereon essentially
thus-treated
two-step
two-step process
utilization
waste
waste gas