Process for separating hydrogen and methane from an ethylene ric

Details Process for separating hydrogen and methane from an ethylene ric Process for separating hydrogen and methane from an ethylene ric

1985-06-20

1986-12-16

Sever, Frank

Refrigeration

Processes

Circulating external gas

62 31, 62 33, 62 34, 62 39, F25J 302

Patent

active

046294848

ABSTRACT:
A process for separating hydrogen and methane from a gas mixture containing hydrocarbons heavier than methane in which the gas mixture is passed through a plurality of chilling stages, a bottoms portion from at least one of the chilling stages being passed to a hydrogen stripper before being introduced to a fractionating column, the hydrogen stripper overheads portion being passed back into the chilling train from which a final hydrogen rich stream containing in excess of ninety mole percent hydrogen is separated at a temperature lower than -140.degree. C.

REFERENCES:
patent: 3729944 (1973-05-01), Kelley et al.

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