Biogas plant and biogas treatment

The present invention relates to a biogas plant (10) including a fermenter (12), a biogas processing unit (16) and a thermal engine (19). The biogas processing unit (16) includes a gas separation unit (32) and a compression unit (33) for the separation of raw biogas (26) from the fermenter (12) into...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: BECKER, Jens, WIEGERS, Jan
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:The present invention relates to a biogas plant (10) including a fermenter (12), a biogas processing unit (16) and a thermal engine (19). The biogas processing unit (16) includes a gas separation unit (32) and a compression unit (33) for the separation of raw biogas (26) from the fermenter (12) into two gas streams, whereby the first gas stream includes a product gas (28) that is enriched in biomethane with respect to the composition of the raw biogas (26) and the second gas stream includes a residual gas (30) that is enriched with carbon dioxide with respect to the composition of the raw biogas (26) and has a biomethane concentration of less than 20%. The thermal engine (19) produces energy (39) that is used for operation of the compression unit (33).