Process for liquefying a gas, notably a natural gas or air, comp

Details Process for liquefying a gas, notably a natural gas or air, comp Process for liquefying a gas, notably a natural gas or air, comp

1998-12-21

2000-08-22

Capossela, Ronald

Refrigeration

Cryogenic treatment of gas or gas mixture

Liquefaction

62619, 62621, 62910, F25J 100

Patent

active

061053910

ABSTRACT:
The invention is a process for liquefying a compound A from a mixture comprising at least compound A and at least one compound B. The mixture is available at a pressure P1 with separation of the at least one compounds B and/or of compound A being performed by distillation at a pressure substantially close to pressure P2 in order to produce at least a stream mainly comprising the compound A and at least a stream F4 comprising most of the at least one compound B. The invention has an application of methane and/or helium extraction during liquefaction of a natural gas.

REFERENCES:
patent: 2900796 (1959-08-01), Morrison
patent: 2903858 (1959-09-01), Bocquet
patent: 2922285 (1960-01-01), Rae
patent: 3116135 (1963-12-01), Filstead, Jr.
patent: 3397138 (1968-08-01), Bacon
patent: 3616652 (1971-11-01), Engel
patent: 4456459 (1984-06-01), Brundige, Jr.
patent: 4732598 (1988-03-01), Rowles

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