Recovery of methane from land fill gas

Details Recovery of methane from land fill gas Recovery of methane from land fill gas

C - Chemistry, Metallurgy

07

C

183/24

C07C 9/04 (2006.01) B01D 53/04 (2006.01) B01D 53/047 (2006.01) C07C 7/12 (2006.01)

Patent

CA 1312552

211-P-US03764 ABSTRACT OF THE DISCLOSURE High purity methane and carbon dioxide are recovered from landfill gas in an integrated multi-column adsorption system having a temperature swing adsorption section (TSA) for pretreatment of the crude landfill gas to remove trace impurities therefrom the thus cleaned gas being fed to a pressure swing adsorption section (PSA) for bulk separation of CO2 from methane. Regeneration of the impurity-laden adsorbent bed of the TSA section is carried out using part of the CO2 product gas recovered from the PSA section which gas is heated to thermal regeneration temperature.

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