METHOD OF AIR SEPARATION Russian patent published in 2012 - IPC F25J3/04

Abstract RU 2460952 C2

FIELD: machine building.

SUBSTANCE: proposed method of low-pressure air separation comprises its cooling by gaseous separation products and low-temperature rectification with production of oxygen gas at pressure and liquid nitrogen. Portion of waste nitrogen gas is compressed in compressor at cryogenic unit outlet, cooled and condensed in heat exchanger by cold of liquefied natural gas and expanded to about barometric pressure. Nitrogen vapors generated hereat are directed into cryogenic unit for additional cooling of low-pressure airflow prior to feeding it into rectification column for separation.

EFFECT: higher explosion safety.

1 dwg

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RU 2 460 952 C2

Authors

Akulov Leonid Alekseevich

Sychev Vladimir Nikolaevich

Zajtsev Andrej Viktorovich

Dates

2012-09-10—Published

2010-07-20—Filed