Gas separation: processes – Solid sorption – Including reduction of pressure
Patent
1995-03-24
1996-04-09
Spitzer, Robert
Gas separation: processes
Solid sorption
Including reduction of pressure
95103, 95105, 95138, 96130, 96133, B01D 53053
Patent
active
055057659
ABSTRACT:
A method of separating nitrogen-enriched gas is performed by PSA with the use of an apparatus which comprises a plurality of adsorbers (1, 2), a balance tank (3), and a product receiver (4). The method is characterized by comprising the steps of (a) passing, at a predetermined flow rate, high-purity nitrogen gas from the balance tank (3) to an outlet of an adsorber (2) undergoing regeneration; (b) establishing communication between the outlets of both adsorbers (1, 2) through a pressure equalization line while opening the inlets of both adsorbers to atmospheric pressure; (c) after the above step (b), causing a predetermined amount of high-purity nitrogen gas in the balance tank (3) to reversely pass via the outlet of the adsorber (2) which is to be switched from regeneration to adsorption while also supplying the crude gas through its inlet.
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Haruna Kazuo
Kaji Shin-ichi
Bednarek Michael D.
Spitzer Robert
Sumitomo Seika Chemicals Co. Ltd.
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