Method and apparatus for separating of product gas from raw gas

Details Method and apparatus for separating of product gas from raw gas Method and apparatus for separating of product gas from raw gas

1985-12-02

1987-09-29

Capossela, Ronald C.

Refrigeration

Processes

Circulating external gas

62 36, 62 38, 62 42, 62 87, F25J 302

Patent

active

046966897

ABSTRACT:
A gas separating method and a gas separating apparatus according to the present invention effectively carry out the generation of the cryogenic effect within a plant for separating and extracting valuable gases such as nitrogen, oxygen, argon or the like from raw gas. For this purpose, the arrangement is such that low temperature gas within a process is subjected to a thermal exchange with the raw gas in a heat exchanger and is thermally restored; the thus restored gas is fed to a booster driven by an expansion turbine to be pressurized therein; the thus pressurized gas is cooled to the normal temperature by a cooler; the cooled gas is further cooled in the heat exchanger; and the still lower temperature gas is supplied to the expansion turbine to be adiabatically expanded, thereby generating the cryogenic effect.

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patent: 4303428 (1981-12-01), Vandenbussche
patent: 4539816 (1985-09-01), Fox
patent: 4566887 (1986-01-01), Openshaw

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