Membrane plant: automatic control of

Details Membrane plant: automatic control of Membrane plant: automatic control of

1993-01-07

1995-11-28

Spitzer, Robert

Gas separation: apparatus

Apparatus for selective diffusion of gases

55210, 95 12, 95 54, 96 8, B01D 5322

Patent

active

054703794

ABSTRACT:
Air is separated in a vessel housing gas separation membranes. A flow control valve controls the passage of air to an inlet header of the vessel. The setting of the valve is adjusted in accordance with the level of oxygen impurity in product nitrogen leaving the vessel for an outlet header. A second flow control valve is provided and is of a kind whereby product nitrogen is able to be delivered at a constant flow rate over a range of different pressures upstream thereof. Accordingly, the apparatus is able to deliver nitrogen at a desired purity and flow rate.

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Toray Ind. Inc., Patent Abstracts of Japan, "Generator of Oxygen-Enrich Air", vol. 13, No. 190 (C-593) (3538) (May 8, 1989) for JP-A-118,425 (Jan. 23, 1989).

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