Production of cryogenic liquid mixtures

Details Production of cryogenic liquid mixtures Production of cryogenic liquid mixtures

F - Mech Eng,Light,Heat,Weapons

25

J

F25J 3/02 (2006.01) F25J 1/00 (2006.01) F25J 3/04 (2006.01) F25J 3/06 (2006.01)

Patent

CA 2227652

A product cryogenic liquid mixture comprising oxygen and nitrogen having a chosen mole fraction of oxygen is produced by expanding, typically through a valve 16, a pressurised 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 vapour phase depleted of oxygen and a liquid phase enriched in oxygen. The vapour phase is disengaged from the liquid phase in a phase separator 18. A stream of the vapour phase is condensed in a condenser 22. The condensate is collected in a storage vessel 26 as the product cryogenic liquid mixture.

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