Preliminary condensation of methane in the fractionation of a ga

Details Preliminary condensation of methane in the fractionation of a ga Preliminary condensation of methane in the fractionation of a ga

1980-03-31

1982-01-19

Yudkoff, Norman

Refrigeration

Processes

Circulating external gas

62 28, 62 31, 62 24, 55 68, F25J 300

Patent

active

043114962

ABSTRACT:
In the fractionation of a gaseous mixture, of hydrogen, methane, and carbon monoxide, comprising a cold methane wash to obtain a gaseous stream of hydrogen and a liquid stream of carbon monoxide and methane, the improvement wherein of the gaseous mixture prior to the methane wash is subjected to a continuous partial condensation at a temperature higher than the cold methane wash, thereby obtaining a gaseous phase fraction and a condensed liquid phase fraction; the gaseous phase fraction is conducted to the methane wash, and the condensed liquid phase fraction is conducted to a stripping column which produces a bottoms product stream of methane and an overhead product stream of hydrogen and carbon monozide. The continuous partial condensation can be conducted either in a single stage or in multiple stages.

REFERENCES:
patent: 3498067 (1970-03-01), Ranke
patent: 3508413 (1970-04-01), Pryor
patent: 3886756 (1975-06-01), Allam et al.
patent: 4102659 (1978-07-01), Martin

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