Gas separation: processes – Solid sorption – Including reduction of pressure
Reexamination Certificate
2008-02-12
2010-10-26
Lawrence, Frank M (Department: 1797)
Gas separation: processes
Solid sorption
Including reduction of pressure
C095S138000
Reexamination Certificate
active
07819947
ABSTRACT:
Adsorption process for recovering ozone from a feed gas mixture containing at least ozone and oxygen comprising (a) introducing the feed gas mixture into a first end of an adsorber vessel containing a zeolite adsorbent and selectively adsorbing ozone on the adsorbent; (b) withdrawing from a second end of the vessel a stream of oxygen essentially free of ozone; (c) terminating the flow of the feed gas mixture, introducing a purge gas into the second end of the vessel, and withdrawing from the first end of the vessel an outlet gas mixture containing at least purge gas and desorbed ozone; and (d) introducing an additional component into the feed gas mixture and/or the purge gas and adsorbing the additional component on the zeolite adsorbent. The additional component when adsorbed reduces the decomposition of ozone that would occur in the absence of the additional component adsorbed on the zeolite adsorbent.
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Weist, Annmarie et al; U.S. Appl. No. 12/358,310; Ozone Production by Pressure Swing Adsorption Using a Noble Gas Additive; filed Jan. 23, 2009.
Weist Annemarie Ott
Weist, Jr. Edward Landis
Air Products and Chemical, Inc.
Lawrence Frank M
Morris-Oskanian Rosaleen
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