Separation of carbon monoxide from nitrogen-contaminated gaseous

Details Separation of carbon monoxide from nitrogen-contaminated gaseous Separation of carbon monoxide from nitrogen-contaminated gaseous

1999-01-04

2000-06-13

Capossela, Ronald

Refrigeration

Cryogenic treatment of gas or gas mixture

Separation of gas mixture

62632, 62920, F25J 100

Patent

active

060734612

ABSTRACT:
Carbon monoxide is separated from a gaseous mixture containing hydrogen and methane and contaminated with nitrogen by scrubbing carbon monoxide from a vapor portion of the feed by a liquid methane wash; stripping dissolved hydrogen from the resultant CO-loaded liquid methane stream; fractionating the resultant hydrogen-stripped CO-loaded liquid methane stream to separate nitrogen therefrom; and fractionating the resultant nitrogen-freed bottoms liquid into CO product overheads vapor and methane bottoms liquid. If the gaseous mixture also contains argon, argon content can be removed with the methane content to obviate a separate argon-separation stage as required by prior art processes.

REFERENCES:
patent: 4311496 (1982-01-01), Fabian
patent: 4478621 (1984-10-01), Fabian
patent: 5351491 (1994-10-01), Fabian
patent: 5351492 (1994-10-01), Agrawal et al.
patent: 5359857 (1994-11-01), Honda
patent: 5592831 (1997-01-01), Bauer et al.

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