Recovery of methane from land fill gas

Gas separation – Means within gas stream for conducting concentrate to collector

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55 58, 55 62, 55 68, B01D 5304

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active

047706767

ABSTRACT:
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.

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Pressure Swing Adsorption for Natural Gas or Methane Recovery from Landfill Gas--E. Richter, K. D. Henning, K. Knoblauch and H. Juntgen, Bergbau-Forschung GmbH, Franz-Fischer-Weg 61, 43 Essen 13.
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