Process and installation for the production of gaseous oxygen an

Details Process and installation for the production of gaseous oxygen an Process and installation for the production of gaseous oxygen an

1994-08-29

1995-12-26

Capossela, Ronald C.

Refrigeration

Processes

Circulating external gas

62 38, 62 41, F25J 302

Patent

active

054776899

ABSTRACT:
A process and installation for the production of gaseous oxygen and/or gaseous nitrogen under pressure by distillation of air in a double column (9), which comprises pumping (in 13) at least one liquid product withdrawn from the base of the low pressure column (11), and vaporization (in 8) of the compressed liquid product by heat exchange with the air brought to a high air pressure. All of the air to be distilled is brought to the high air pressure, and the excess fraction of this air is expanded in two turbines in series (5, 6) to the pressure of the medium pressure column (10), the air being partially reheated (in 22) between the two turbines.

REFERENCES:
patent: 5157926 (1992-10-01), Guilleminot
patent: 5329776 (1994-07-01), Grenier
patent: 5365741 (1994-11-01), Roberts et al.

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