Air separation process

Details Air separation process Air separation process

1998-07-30

2000-03-21

Doerrler, William

Refrigeration

Cryogenic treatment of gas or gas mixture

Separation of gas mixture

62654, F25J 300

Patent

active

060388854

ABSTRACT:
A process and a system for the low-temperature separation of air by rectification is provided. A liquid fraction is obtained in a rectifying system, stored in a tank and at least a portion of the liquid fraction taken out of the tank and brought to an increased pressure. During normal operation, the liquid fraction, which was brought to an increased pressure, is heated in a preheat exchanger and evaporated in the main heat exchanger. During an operating disturbance, at least a portion of the liquid product is removed from the tank, evaporated and used for an emergency supply.

REFERENCES:
patent: 3059439 (1962-10-01), First et al.
patent: 5209070 (1993-05-01), Darredeau
patent: 5265429 (1993-11-01), Dray
patent: 5408831 (1995-04-01), Guillard et al.
patent: 5526647 (1996-06-01), Grenier
patent: 5566556 (1996-10-01), Ekins et al.
patent: 5692396 (1997-12-01), Rathbone

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