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

B - Operations, Transporting

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183/1, 162/123

B01D 53/22 (2006.01) B01D 53/04 (2006.01) B01D 53/26 (2006.01) F25J 3/04 (2006.01)

Patent

CA 2016569

- 29 - DRY, HIGH PURITY NITROGEN PRODUCTION PROCESS AND SYSTEM Abstract of the Disclosure 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, with 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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