Pressure swing adsorption with direct and indirect pressure equa

Details Pressure swing adsorption with direct and indirect pressure equa Pressure swing adsorption with direct and indirect pressure equa

1982-10-19

1984-08-28

Spitzer, Robert H.

Gas separation

Means within gas stream for conducting concentrate to collector

55 62, 55 68, 55 75, B01D 5304

Patent

active

044682379

ABSTRACT:
In pressure swing adsorption systems having at least five adsorbent beds, three or more cocurrent depressurization-pressure equalization steps are employed in each processing cycle. At least one indirect equalization step is employed between two direct pressure equalizations in which void space gas released from the product end of a bed is passed directly to another bed initially at lower pressure so as to equalize the pressure therebetween. In such indirect pressure equalization step, said void space gas is introduced into an external storage tank from which it is passed to a bed being repressurized for indirect pressure equalization between two direct equalization steps in the repressurization of said bed. Sequential direct-indirect-direct-indirect or indirect-direct-indirect-direct processing steps are preferred.

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patent: 4350500 (1982-09-01), Esselink

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