Liquid flash between expanders in gas separation

Details Liquid flash between expanders in gas separation Liquid flash between expanders in gas separation

1977-10-20

1979-05-22

Yudkoff, Norman

Refrigeration

Processes

Circulating external gas

62 28, 62 38, 62 23, F25J 302

Patent

active

041557298

ABSTRACT:
In the separation of low boiling gases such as ethane and heavier from natural gas utilizing two expanders in series, liquid condensed before expansion is not passed to the fractionator but is flashed and the resulting vapor combined with the expanded vapor from the first expander. This results in both increased work output from the second expander and simplified design of the downstream fractionator column since it reduces the amount of lighter materials introduced into the lower section thereof.

REFERENCES:
patent: 1607322 (1926-11-01), Van Nuys et al.
patent: 2265558 (1941-12-01), Ward et al.
patent: 2880592 (1959-04-01), Davison et al.
patent: 2903858 (1959-09-01), Bocquet
patent: 3292380 (1966-12-01), Bucklin
patent: 3292381 (1966-12-01), Bludworth
patent: 3319429 (1967-05-01), Pryor
patent: 3516261 (1970-06-01), Hoffman
patent: 3702541 (1972-11-01), Randall et al.
patent: 4061481 (1977-12-01), Campbell et al.

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