04770676 is referenced by 78 patents and cites 19 patents.

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 CO.sub.2 from methane. Regeneration of the impurity-laden adsorbent bed of the TSA section is carried out using part of the CO.sub.2 product gas recovered from the PSA section which gas is heated to thermal regeneration temperature.

Title
Recovery of methane from land fill gas
Application Number
864178
Publication Number
4770676
Application Date
September 3, 1987
Publication Date
September 13, 1988
Inventor
John VanSloun
Allentown
PA, US
William R Koch
Fleetwood
PA, US
Ravi Kumar
Allentown
PA, US
Shivaji Sircar
Wescosville
PA, US
Agent
James C Simmons
William F Marsh
Geoffrey L Chase
Assignee
Air Products and Chemicals
PA, US
IPC
B01D 53/04
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