Gas liquefaction method and apparatus

Details Gas liquefaction method and apparatus Gas liquefaction method and apparatus

1987-05-01

1988-07-19

Capossela, Ronald C.

Refrigeration

Processes

Circulating external gas

62 38, F25J 306

Patent

active

047582570

ABSTRACT:
A stream of compressed nitrogen (or methane) at above its critical pressure is passed along conduit 10 through heat exchangers 16, 18, 20, 22 and 24, in sequence, to cool it to below its critical temperature. The resulting fluid is then subjected to expansion and resultant liquid is collected. Refrigeration for the heat exchangers is provided by nitrogen working fluid cycles 62, 72 and 82 employing expansion turbines 64, 74 and 84 respectively. The turbines have different inlet temperatures but substantially the same outlet temperature.

REFERENCES:
patent: 3677019 (1982-07-01), Olszewski
patent: 3874185 (1975-04-01), Etzbach
patent: 4566886 (1986-01-01), Fabian et al.
patent: 4595405 (1986-06-01), Agrawal et al.
patent: 4606744 (1986-08-01), Kundig
patent: 4619679 (1986-10-01), Delong
patent: 4638638 (1987-01-01), Marshall et al.
patent: 4638639 (1987-01-01), Marshall et al.
patent: 4666481 (1987-05-01), Olson, Jr.

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