Process for the separation of a gas mixture by cryogenic distill

Details Process for the separation of a gas mixture by cryogenic distill Process for the separation of a gas mixture by cryogenic distill

1995-12-18

1997-07-29

Capossela, Ronald C.

Refrigeration

Cryogenic treatment of gas or gas mixture

Separation of gas mixture

62650, 62651, F25J 300

Patent

active

056512716

ABSTRACT:
In order to precool a flow of gas to be distilled, before a purification stage, it is sent into an exchanger (5) where it is cooled by heating a flow of refrigerant (13B). At least a part of this refrigerant has its pressure reduced before cooling the unpurified gas and may be a fraction of the gas to be distilled or a product of the distillation. It is preferably a cycle gas of the system. This arrangement makes it possible to obviate a refrigerating unit.

REFERENCES:
patent: 3327488 (1967-06-01), Pervier
patent: 4072023 (1978-02-01), Springmann
patent: 4099945 (1978-07-01), Skolaude
patent: 4367082 (1983-01-01), Tomisaka et al.

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