Process for the mixed production of high and low purity oxygen

Details Process for the mixed production of high and low purity oxygen Process for the mixed production of high and low purity oxygen

1991-10-15

1994-05-31

Bennet, Henry A.

Refrigeration

Processes

Circulating external gas

62 22, 62 24, 62 31, 62 32, F25J 300

Patent

active

053158334

ABSTRACT:
A process for simultaneously providing both high and low purity oxygen from a double column, double reboiler apparatus, the double columns being high and low pressure columns, the low pressure column having a lower and upper reboiler with an intermediate outlet in between, which process entails extracting a low purity oxygen stream at the intermediate outlet and a high purity liquid oxygen stream from a bottom portion of the low pressure column.

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patent: 5114449 (1992-05-01), Agrawal et al.

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