Process and installation for producing high pressure oxygen

Details Process and installation for producing high pressure oxygen Process and installation for producing high pressure oxygen

1997-01-27

1998-04-07

Capossela, Ronald C.

Refrigeration

Cryogenic treatment of gas or gas mixture

Separation of gas mixture

62940, E25J 300

Patent

active

057351422

ABSTRACT:
A process and a plant in which gaseous oxygen is produced directly at the desired high pressure by pumping liquid oxygen drawn off in the vessel of the low-pressure column (11). The air to be distilled is split into three flows: a flow at the medium pressure of the double distillation column (1), a flow at a high pressure, higher than approximately 60 bars, and a flow at an intermediate pressure which, after partial cooling, is expanded to the medium pressure in a turbine (8). The intermediate pressure is chosen so that the air treated in the turbine is near its dew point at the entry of the turbine wheel. Liquid product is simultaneously drawn off (at 24) from the plant.

REFERENCES:
patent: 5157926 (1992-10-01), Guilleminot
patent: 5329776 (1994-07-01), Grevier
patent: 5337570 (1994-08-01), Posser
patent: 5475980 (1995-12-01), Grevier et al.

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