Nitrogen PSA with intermediate pressure transfer

Details Nitrogen PSA with intermediate pressure transfer Nitrogen PSA with intermediate pressure transfer

1996-12-20

1998-04-14

Spitzer, Robert

Gas separation: processes

Solid sorption

Including reduction of pressure

95105, 95138, B01D 53047

Patent

active

057387095

ABSTRACT:
A process for pressure swing adsorption of oxygen from a gas mixture containing at least oxygen and nitrogen to recover an unadsorbed nitrogen enriched product from a plurality of parallel piped adsorbent beds undergoing adsorption, depressurization and repressurization wherein the improvement is conducting a pressure transfer from one bed to another from an intermediate point of the bed finishing adsorption to a point closer to the feed end of a bed that is repressurizing to improve productivity and recovery of nitrogen enriched gas in the process.

REFERENCES:
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patent: 4715867 (1987-12-01), Vo
patent: 4925461 (1990-05-01), Gemba et al.
patent: 5176722 (1993-01-01), Lemcoff et al.
patent: 5441558 (1995-08-01), Lee et al.
patent: 5520720 (1996-05-01), Lemcoff
patent: 5540758 (1996-07-01), Agrawal et al.

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