Production of dry, high purity nitrogen

Production of dry, high purity nitrogen

Wet feed air to, or high purity nitrogen (3) from, a pressure swing adsorption system (2) is dried in a dryer membrane system (9) preferably operated with a countercurrent flow path. Drying is enhanced by the use of a purge gas on the permeate side of the membrane, with waste gas (12) from the press...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: HAAS, OSCAR W, PRASAD, RAVI, SMOLAREK, JAMES
Format: Patent
Sprache:eng
Schlagworte:
CHEMISTRY
COMPOUNDS THEREOF
INORGANIC CHEMISTRY
METALLURGY
NON-METALLIC ELEMENTS
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
TRANSPORTING
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Beschreibung
Zusammenfassung:Wet feed air to, or high purity nitrogen (3) from, a pressure swing adsorption system (2) is dried in a dryer membrane system (9) preferably operated with a countercurrent flow path. Drying is enhanced by the use of a purge gas on the permeate side of the membrane, with waste gas (12) from the pressure swing adsorption system of a portion of the dry, high purity nitrogen product gas being used as purge gas.