Self-refrigerated method of cryogenic fractionation and purifica

Details Self-refrigerated method of cryogenic fractionation and purifica Self-refrigerated method of cryogenic fractionation and purifica

1994-07-12

1995-10-31

Capossela, Ronald C.

Refrigeration

Processes

Circulating external gas

62 36, 62 42, 165166, F25J 300

Patent

active

054618703

ABSTRACT:
A self-refrigerated method of cryogenic fractionation and purification of gas and a heat exchanger for performing the method, wherein the gaseous fluid is treated in an exchanger forming a unitary assembly: it is partially condensed by cooling in a fifth and first circuits and the non-condensed gaseous fraction is re-heated in a second circuit, the required cold being supplied by the condensates which after having been sub-cooled in a third circuit and expanded in a valve are evaporating in a fourth circuit, the method permitting the purification of a gaseous fluid with several condensable components through cooling possibly in an exchanger with multiple channels for each circuit.

REFERENCES:
patent: 4228660 (1980-10-01), Grenier
patent: 4721164 (1988-01-01), Woodward
patent: 5017204 (1991-05-01), Gottier et al.
patent: 5122174 (1992-06-01), Sunder et al
patent: 5144809 (1992-09-01), Chevalier et al.
patent: 5291738 (1994-03-01), Waldrop

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