07025803 is referenced by 17 patents and cites 31 patents.

A system and a process for recovering high concentrations of methane from crude natural gas and solid waste landfill exhaust gas uses a sequential combination of a pressure swing adsorber unit operation to remove volatile organic compounds from the crude feed gas mixture followed by a membrane separation unit operation. The membrane separation uses a membrane which is selectively gas permeable to reject transmission of methane and thus to produce a permeate depleted in methane relative to the feed mixture. The permeate is also free of volatile organic compounds and is recycled to the pressure swing adsorber unit operation to regenerate saturated adsorbers.

Title
Methane recovery process
Application Number
10/712620
Publication Number
7025803 (B2)
Application Date
November 13, 2003
Publication Date
April 11, 2006
Inventor
Charles L Anderson
Wilmington
DE, US
Kenneth J Wascheck
Wilmington
DE, US
Agent
Jeffrey C Lew
Assignee
L Air Liquide Societe Anonyme A Directoire et Counsel de Surveillance Pour L Etude et L Exploration des Procedes Georges Claude
FR
IPC
B01D 53/26
B01D 53/22
B01D 53/047
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