Low temperature separation of gaseous mixture for methanol synth

Details Low temperature separation of gaseous mixture for methanol synth Low temperature separation of gaseous mixture for methanol synth

1983-12-23

1984-12-18

Hart, Charles

Refrigeration

Processes

Circulating external gas

55 48, 55 68, 62 20, 62 27, F25J 300, B01D 4700

Patent

active

044888902

ABSTRACT:
For the low-temperature separation of a gaseous mixture containing essentially hydrogen, C.sub.1+ -hydrocarbons, and carbon monoxide, resulting in a purified gaseous mixture to be processed, after the low-temperature separation, in methanol synthesis, the gaseous mixture is cooled and subsequently fed to a scrubbing column to scrub out the C.sub.1+ -hydrocarbons with liquid CO. A product containing essentially hydrogen and carbon monoxide is obtained at the head of the scrubbing column. The resultant liquid CO, loaded essentially with the C.sub.1+ -hydrocarbons, is withdrawn as the sump product from the column and introduced into a C.sub.1+ -CO separating column.

REFERENCES:
patent: 3649558 (1972-03-01), Linde et al.
patent: 4102659 (1978-07-01), Martin
patent: 4311496 (1982-01-01), Fabian
patent: 4337072 (1982-06-01), McNeil
patent: 4338107 (1982-07-01), Swallow

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