Liquefaction of gas

Details Liquefaction of gas Liquefaction of gas

1978-05-12

1979-10-30

Yudkoff, Norman

Refrigeration

Processes

Circulating external gas

62 37, 62 23, 62 40, F25J 306

Patent

active

041727118

ABSTRACT:
A process for liquefying a natural gas, having a pressure above atmospheric pressure, in which a feed gas is cooled to sequentially lower temperatures, by passing the gas through a plurality of cooling stages, in indirect heat exchange with at least one refrigerant, until the gas is substantially completely condensed in the last of the cooling stages, a fuel gas fraction is withdrawn from the liquefied gas in an amount proportional to the amount of feed gas passing through the cooling stages and, thereafter, the pressure of the remaining liquefied gas is reduced to essentially atmospheric pressure. Apparatus for carrying out the process is also described.

REFERENCES:
patent: 2960837 (1960-11-01), Swenson et al.
patent: 3020723 (1962-02-01), De Lury et al.
patent: 3254495 (1966-06-01), Jackson et al.
patent: 3290890 (1966-12-01), Bray et al.
patent: 3292382 (1966-12-01), Bray et al.
patent: 3413817 (1968-12-01), Kniel
patent: 3874184 (1975-04-01), Harper et al.

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