Inverted pressure swing adsorption process

Details Inverted pressure swing adsorption process Inverted pressure swing adsorption process

1981-10-09

1982-11-16

Spitzer, Robert H.

Gas separation

Means within gas stream for conducting concentrate to collector

55 58, 55 62, 55 68, B01D 5304

Patent

active

043593283

ABSTRACT:
A gas mixture, having a more readily adsorbable gas component to be recovered and a less readily adsorbable gas component, is introduced to an adsorption zone at low pressure, with the pressure being increased prior to purging the less readily adsorbable gas component from the adsorption zone at high pressure. Upon depressurization, the readily adsorbable gas component is recovered at enhanced purity levels. In multiple adsorption zone operations, each zone is passed through the low pressure adsorption, pressurization, high pressure purging and depressurization cycle, in sequence, with pressure equalization steps advantageously being employed between the zones to be pressurized following adsorption and those being depressurized following purging. The invention can be used to recover nitrogen of enhanced purity from air, and to recover high purity methane from mixtures thereof with nitrogen.

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