0245796-A1 is referenced by 3 patents and cites 3 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 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 PSA section which gas is heated to thermal regeneration temperature.

Title
Recovery of methane from landfill gas.
Application Number
EP19870106712 19870508
Publication Number
0245796 (A1)
Application Date
May 8, 1987
Publication Date
November 19, 1987
Inventor
Koch William Rohrer
US
Sircar Shivaji
US
Assignee
Air Prod & Chem
US
IPC
C07C 09/04
C07C 07/12
C10L 03/00
C07C 07/00
B01J 08/00
B01D 53/04
B01J 08/04
C10L 03/06
C07C 07/12
B01J 08/00
B01D 53/04
B01J 08/04
View Original Source Download PDF