Recovery of C.sub.2 + hydrocarbons by plural stage rectification

Details Recovery of C.sub.2 + hydrocarbons by plural stage rectification Recovery of C.sub.2 + hydrocarbons by plural stage rectification

1974-11-27

1977-01-11

Lutter, Frank W.

Refrigeration

Processes

Circulating external gas

62 31, 62 40, F25J 302

Patent

active

040020428

ABSTRACT:
A process is provided for the separation and recovery of a major portion of the C.sub.2 + hydrocarbon content of a feed gas comprising hydrogen, methane, ethylene, and ethane. The feed gas is introduced to a dephlegmator to effect its separation into a vapor stream and a condensate stream. The condensate stream which is rich in C.sub.2 + hydrocarbons is passed to a demethanizer column where it is fractionated into an overhead methane-hydrogen stream and a bottoms product ethylene-ethane+ stream.

REFERENCES:
patent: 2582068 (1952-01-01), Roberts
patent: 2880592 (1959-04-01), Davison et al.
patent: 3186182 (1965-06-01), Grossmann et al.
patent: 3276212 (1966-10-01), Ichihara
patent: 3359743 (1967-12-01), DiNapoli
patent: 3675435 (1972-07-01), Jackson et al.
Hackh's Chemical Dictionary; 4th Edition; Grant; McGraw-Hill; 1969; p. 203.

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