MEMBRANE PERMEATION TREATMENT WITH ADJUSTMENT OF THE TEMPERATURE OF THE FIRST RETENTATE AS A FUNCTION OF THE CH4 CONCENTRATION IN THE THIRD AND/OR FOURTH PERMEATE

MEMBRANE PERMEATION TREATMENT WITH ADJUSTMENT OF THE TEMPERATURE OF THE FIRST RETENTATE AS A FUNCTION OF THE CH4 CONCENTRATION IN THE THIRD AND/OR FOURTH PERMEATE

A facility and method for membrane permeation treatment of a feed gas flow containing at least methane and carbon dioxide that includes a compressor, a pressure measurement device, at least one valve, and first, second, third, and fourth membrane separation units for separation of CO2 from CH4 to pe...

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Bibliographische Detailangaben
Hauptverfasser: ZICK, Golo, CHAREYRE, Jean-Marc, GRABIE, Veronique
Format: Patent
Sprache:eng
Schlagworte:
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
TRANSPORTING
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Beschreibung
Zusammenfassung:A facility and method for membrane permeation treatment of a feed gas flow containing at least methane and carbon dioxide that includes a compressor, a pressure measurement device, at least one valve, and first, second, third, and fourth membrane separation units for separation of CO2 from CH4 to permeates enriched in CO2 and retentates enriched in CH4, respectively. A temperature of the first retentate is adjusted at an inlet of the second membrane separation unit with at least one heat exchanger as a function of the measured CH4 concentration in such a way so as to reduce the determined difference.