Gas separation: processes – Solid sorption – Inorganic gas or liquid particle sorbed
Reexamination Certificate
2005-01-04
2005-01-04
Spitzer, Robert H. (Department: 1724)
Gas separation: processes
Solid sorption
Inorganic gas or liquid particle sorbed
C095S143000, C095S144000, C095S902000, C423S237000, C423S239200, C423S245100
Reexamination Certificate
active
06837917
ABSTRACT:
A process for removal of ethylene oxide (EO) from ambient air laden with EO is passed through a zeolite-based removal media, which preferrably consists of the acid form of zeolite ZSM-5, herein referred to as “H-ZSM-5.” The process described herein may be applied to many forms, configurations and uses, such as, for example, gas masks, fume hood ventilation filters, cartridge filters, etc. Preferably, the H-ZSM-5 is configured within an apparatus in such a manner that the stream containing EO is brought into sufficient contact with the zeolite to remove the EO from the airstream.
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Karwacki Christopher A.
Rossin Joseph A.
Baker & Botts L.L.P.
Guild Associates, Inc.
Spitzer Robert H.
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