Other

Waga Energy

Pierre Briend

Nicolas Paget

Guénaël Prince

Mathieu Lefebvre

A method for producing biomethane by purifying biogas from non-hazardous waste storage facilities involves compressing the initial gas flow, introducing the gas flow to be purified into at least one adsorber loaded with adsorbents capable of reversibly adsorbing the VOCs, and subjecting the VOC-depleted gas flow to at least one membrane separation step in order to partially separate the COand Ofrom the gas flow. The method also involves introducing the retentate from the membrane separation step into at least one adsorber loaded with adsorbents capable of reversibly adsorbing the major portion of the remaining CO, subjecting the CO-depleted gas flow exiting the adsorber loaded with adsorbents capable of reversibly adsorbing the major portion of the remaining COto a cryogenic separation step in a distillation column in order to separate the Oand Nfrom the gas flow, and recovering the CH-rich flow from the cryogenic separation step.

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Seyssinet-Pariset, France

Pierre Briend