Dry, high purity nitrogen production process and system

Details Dry, high purity nitrogen production process and system Dry, high purity nitrogen production process and system

1989-05-12

1990-06-19

Capossela, Ronald C.

Refrigeration

Processes

Circulating external gas

55 16, 62 17, F25J 302

Patent

active

049341480

ABSTRACT:
Feed air to a prepurifier adsorption system/cryogenic air separation system for dry, high purity nitrogen and/or oxygen production is dried in a membrane dryer preferably characterized by a countercurrent flow path. Drying is enhanced by the use of purge gas on the permeate side of the membrane dryer, which adsorption system or cryogenic air separation system product or waste gas, dried feed air or ambient air being used as purge gas.

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