Vacuum swing adsorption for air fractionation

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

1979-02-28

1981-04-28

Hart, Charles N.

Gas separation

Means within gas stream for conducting concentrate to collector

55 31, 55 33, 55 58, 55 68, 55 75, B01D 5100, B01D 5300

Patent

active

042643406

ABSTRACT:
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 fractionating column with desorbed process nitrogen.

REFERENCES:
patent: 3085379 (1963-04-01), Kiyonaga et al.
patent: 3140931 (1964-07-01), McRobbie
patent: 3533221 (1970-10-01), Tamura
patent: 3720042 (1973-03-01), Simonet
patent: 3796022 (1974-03-01), Simonet et al.
patent: 3891411 (1975-06-01), Meyer
patent: 3923477 (1975-12-01), Armond et al.
patent: 4013429 (1977-03-01), Sircar et al.

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