Gas separation: processes – Solid sorption – Including reduction of pressure
Reexamination Certificate
2004-02-12
2009-10-20
Hopkins, Robert A (Department: 1797)
Gas separation: processes
Solid sorption
Including reduction of pressure
C096S130000
Reexamination Certificate
active
07604682
ABSTRACT:
A gas purification unit includes a gas purification vessel (12) and at least one of inlet conduit means (18, 20, 34) for connecting a feed gas source (16) to the gas purification vessel and outlet conduit means (36, 22, 24) for connecting the gas purification vessel (12) to at least one downstream gas processing unit. Each of said inlet and outlet conduit means includes at least two subsidiary pipes arranged in parallel and a common pipe (34, 36), each subsidiary pipe being in fluid flow communication with the common pipe and having a flow control valve (18, 20, 22, 24) operating in unison with the flow control valve of the or each other subsidiary pipe. The use of at least two valves in unison increases the reliability of the unit. The use of at least two smaller valves in place of a single large valve also increases the reliability.
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patent: 5133787 (1992-07-01), Diot et al.
patent: 1235861 (1999-11-01), None
patent: 19506760 (1996-01-01), None
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patent: WO 00/59826 (2000-10-01), None
International Search Report for PCT/GB2004/000530.
Air Products & Chemicals, Inc.
Caesar Rivise Bernstein Cohen & Pokotilow Ltd.
Hopkins Robert A
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