Companded total condensation loxboil air distillation

Details Companded total condensation loxboil air distillation Companded total condensation loxboil air distillation

1986-04-18

1989-04-04

Warner, Steven E.

Refrigeration

Processes

Circulating external gas

62 27, 62 31, 62 34, 62 38, F25D 304

Patent

active

048173932

ABSTRACT:
The invention discloses method and apparatus for achieving higher O.sub.2 delivery pressure coupled with high product recovery in cryogenic air distillation plants, without additional power consumption. Products include high purity oxygen plus coproduct argon, or medium purity oxygen plus optional coproduct nitrogen. Compander driven compressor (5) boosts the pressure of a minor fraction of air which totally condenses to evaporate LOX in evaporator (6), and liquid air is split into 2 intermediate refluxes.

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C. Judson King, "Separation Processes", McGraw-Hill Book Co., 1980, pp. 221 and 235.
Latimer, "Distillation of Air", Chemical Engineering Progress (vol. 63, No. 2), Feb. 1967, pp. 35-59.

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