C - Chemistry – Metallurgy – 01 – B
Patent
C - Chemistry, Metallurgy
01
B
C01B 13/08 (2006.01) A61M 16/10 (2006.01) B01D 53/047 (2006.01) C01B 13/02 (2006.01)
Patent
CA 2732147
A method for producing an oxygen-rich product gas comprising (a) providing a primary gas mover including a first compressor for compressing atmospheric air to provide pressurized feed air and a second compressor adapted to compress an oxygen-depleted waste gas from subatmospheric pressure to atmospheric pressure, a drive motor for driving the first and second compressors, and a rechargeable battery for providing power to the drive motor, wherein the rechargeable power supply is characterized by an operating run time between maximum and minimum working charge; (b) providing a pressure/vacuum swing adsorption unit adapted to separate the pressurized feed air into the oxygen-rich product gas and the oxygen-depleted waste gas, wherein the adsorption unit comprises a plurality of adsorber beds containing adsorbent selective for the adsorption of nitrogen from air; and (c) operating each of the adsorber beds in turn through an adsorption cycle including at least the repeating steps of feed/provide product, depressurization, evacuation, and repressurization; wherein the minimum pressure in the evacuation step is between 0.35 and 1.00 atma.
Labuda Matthew James
Occhialini James Michael
Steigerwalt Craig E.
Wagner Glenn Paul
Whitley Roger Dean
Air Products And Chemicals Inc.
Mcfadden Fincham
LandOfFree
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