Pretreatment of raw natural gas prior to liquefaction

Details Pretreatment of raw natural gas prior to liquefaction Pretreatment of raw natural gas prior to liquefaction

1977-10-26

1979-04-24

Yudkoff, Norman

Refrigeration

Processes

Circulating external gas

208351, 62 18, 62 28, 62 38, F25J 302

Patent

active

041509625

ABSTRACT:
High pressure raw natural gas is prepared for liquefaction by first removing water and acid gases and then expanding the gas from the wellhead pressure to remove shaft horsepower. The expanded gas is scrubbed with a C.sub.4 rich liquid previously separated from the gas to remove heavy hydrocarbons and then further dried and passed to the liquefaction zone.

REFERENCES:
patent: 2777305 (1957-01-01), Davison
patent: 4070165 (1978-01-01), Colton

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