Separation of gas mixtures

Details Separation of gas mixtures Separation of gas mixtures

1996-02-15

1997-12-09

Capossela, Ronald C.

Refrigeration

Cryogenic treatment of gas or gas mixture

Separation of gas mixture

62903, F25J 300

Patent

active

056947909

ABSTRACT:
An heat exchange-cum-rectification apparatus comprises a heat exchanger having a first set of passages for separating by dephlegmation a first flow of compressed vaporous air into nitrogen-rich fluid and oxygen-enriched liquid air, and, in heat exchange relationship with said first set of passages, a second set of passages for separating by stripping reboiling an oxygen product from the oxygen-enriched liquid air. A valve is provided for reducing the pressure of the oxygen-enriched liquid air intermediate the said first and second sets of passages.

REFERENCES:
patent: 4721164 (1988-01-01), Woodward
patent: 5207065 (1993-05-01), Lavin et al.
patent: 5461870 (1995-10-01), Paradowski

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