Vacuum swing adsorption for air fractionation

Details Vacuum swing adsorption for air fractionation Vacuum swing adsorption for air fractionation

B - Operations, Transporting

01

D

183/25

B01D 53/04 (2006.01) B01D 53/047 (2006.01) C01B 21/04 (2006.01)

Patent

CA 1134285

211-P-US02389 VACUUM SWING ADSORPTION FOR AIR FRACTIONATION ABSTRACT OF THE DISCLOSURE The water content of high purity nitrogen obtained by vacuum swing adsorptive fractionation of ambient air, is removed in a companion thermal swing drying system operated in association with the air fractionation system but at independent cycle time period, wherein water-laden nitrogen from the air fractionation system is passed through a desiccant bed of solid water-retaining adsorbent in said drying system while withdrawing dry nitrogen of high purity therefrom, and the adsorbed water is subsequently removed from said desiccant adsorbent by regeneration thereof with heated dry air effluent obtained in rinsing the air fraction- ating column with desorbed process nitrogen.

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