Recovery of light hydrocarbons from refinery gas

Details Recovery of light hydrocarbons from refinery gas Recovery of light hydrocarbons from refinery gas

1975-12-22

1978-09-19

Yudkoff, Norman

Refrigeration

Processes

Circulating external gas

62 39, 208351, 62 18, F25J 302

Patent

active

041150864

ABSTRACT:
Described herein is a process for the recovery of light hydrocarbons from refinery gas by an expansion-distillation process. The refinery gas is compressed and cooled in a series of steps to liquify and remove light hydrocarbons from the refinery gas. The vapor portion remaining, comprised of methane, is expansively cooled thereby performing useful work. The expansively cooled vapor is used as a heat exchange medium for cooling the process stream. The liquified light hydrocarbons are separated by distillation.

REFERENCES:
patent: 2500353 (1950-03-01), Gantt
patent: 2596785 (1952-05-01), Nelly, Jr.
patent: 2777305 (1957-01-01), Davison
patent: 3073129 (1963-01-01), Grenier
patent: 3555836 (1971-01-01), Schramm

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