Production of cryogenic liquid mixtures

Details Production of cryogenic liquid mixtures Production of cryogenic liquid mixtures

1998-01-22

2000-06-06

Doerrler, William

Refrigeration

Cryogenic treatment of gas or gas mixture

Separation of gas mixture

62643, F25J 300

Patent

active

060704322

ABSTRACT:
A product cryogenic liquid mixture comprising oxygen and nitrogen having a chosen mole fraction of oxygen is produced by expanding, typically through a valve, a pressurized stream of a precursor fluid mixture, which may be liquid air, having a mole fraction of oxygen greater than said chosen mole fraction, and thereby forming a vapor phase depleted of oxygen and a liquid phase enriched in oxygen. The vapor phase is disengaged from the liquid phase in a phase separator. A stream of the vapor phase is condensed in a condenser. The condensate is collected in a storage vessel as the product cryogenic liquid mixture.

REFERENCES:
patent: 4526595 (1985-07-01), McNeil
patent: 4566887 (1986-01-01), Openshaw
patent: 5656557 (1997-08-01), Hata et al.
patent: 5697228 (1997-12-01), Paige

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