Method and installation for the provision of gas under pressure

Details Method and installation for the provision of gas under pressure Method and installation for the provision of gas under pressure

2004-03-12

2008-11-04

Doerrler, William C (Department: 3744)

Refrigeration

Cryogenic treatment of gas or gas mixture

Separation of gas mixture

C062S648000, C062S653000

Reexamination Certificate

active

07444834

ABSTRACT:
The invention relates to a method for the provision of gas under pressure, by vaporisation of a cryogenic liquid from at least two cryogenic separation devices (A, B, C, D). Each device comprises a heat exchanger (1) and a system of columns (2, 3). In a first mode of operation, a cryogenic liquid is withdrawn from the columns in each cryogenic separation device, at least a part of which is pressurised (7, 8) to give a pressurised cryogenic liquid (9) and at least a part of the cryogenic liquid under pressure is vaporised in the heat exchanger (1) to give a part of gas under pressure (10). A cryogenic liquid is sent (6) from the cryogenic separation device to a common store (12) and at least one liquid (28A,28B,28C,28D) coming from the store is vaporised in the exchange line (1) in at least one of the cryogenic separation devices.

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