| 摘要 |
In a process for producing a mixture containing at least 10% carbon monoxide ( 73 ) by cryogenic separation of a feed gas containing at least carbon monoxide, hydrogen and methane, the feed gas ( 1 ) is separated to produce a first gas enriched in hydrogen ( 71 ), the feed gas is scrubbed in a methane wash column ( 7 ), a carbon monoxide enriched stream ( 13 ) from the bottom of the methane wash column is separated ( 19 ) to produce a stream further enriched in carbon monoxide ( 23 ), the stream further enriched in carbon monoxide is separated to form a carbon monoxide rich stream ( 31,49 ) and a liquid methane stream ( 27 ), at least part ( 72 ) of the carbon monoxide rich stream is mixed with the first gas enriched in hydrogen to form the mixture containing at least 10% carbon monoxide as a product stream.
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