The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 02, 2021
Filed:
Nov. 10, 2016
Waga Energy, Meylan, FR;
Guénaël Prince, Saint Egreve, FR;
Mathieu Lefebvre, Saint-Nazaire les Eymes, FR;
Pierre Briend, Seyssinet Pariset, FR;
Nicolas Paget, Saint Martin d'heres, FR;
Other;
Abstract
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.