PSA process and system using simultaneous top and bottom evacuat

Details PSA process and system using simultaneous top and bottom evacuat PSA process and system using simultaneous top and bottom evacuat

1997-12-09

2000-04-11

Spitzer, Robert H.

Gas separation: processes

Solid sorption

Including reduction of pressure

95101, 95102, 95105, 95130, B01D 53053

Patent

active

060483849

ABSTRACT:
The present invention relates to the recovery of low purity oxygen gas from the top of an adsorber vessel into a receiver tank to be used as a purge reflux gas. Recovery of void gas results in improved process efficiency. The invention may also employ a simultaneous evacuation from the top of the adsorber to remove the lower purity void gas while the main waste evacuation step is conducted. This simultaneous co-current top void gas recovery and counter-current waste evacuation from both ends of the adsorber allows for an overall increase in product recovery of between 3-5% over conventional processes.

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