Fermentation device comprising a coupled substrate and...

Details Fermentation device comprising a coupled substrate and... Fermentation device comprising a coupled substrate and...

C - Chemistry, Metallurgy

12

M

C12M 1/113 (2006.01)

Patent

CA 2635376

The invention relates to a fermentation device for the biological degradation of a substrate containing organic material and for the recovery of the biogas that is produced in the degradation process. To circulate the substrate in the fermentation device and simultaneously remove deposited sediment, mixing units with transversal shafts (11) are arranged one behind the other in the fermentation device, the distance between their axes being smaller than the mixing unit diameter. This permits the mixing impellers (7) of the mixing units to pass through an overlap region (13) as the mixing unit shafts (11) rotate. Any sediment that has been deposited on the floor of the fermentation device can thus be transported from the front end to the removal end of said device.

Dispositif de fermentation qui permet la décomposition biologique d'un substrat contenant de la matière organique et la récupération du biogaz produit par la décomposition. L'objet de la présente invention est de permettre simultanément la circulation du substrat dans le dispositif de fermentation et l'évacuation de sédiments déposés. A cet effet, des dispositifs d'agitation pourvus d'axes d'agitation transversaux (11) sont situés les uns derrière les autres dans le dispositif de fermentation avec des écarts qui sont inférieurs au diamètre des agitateurs. Ainsi, les flancs (7) des dispositifs d'agitation se chevauchent lors de la rotation des axes (11) des dispositifs d'agitation sur une zone de chevauchement (13). Les sédiments qui se sont déposés sur le fond du dispositif de fermentation sont transportés de cette manière à partir de l'extrémité avant vers la zone d'évacuation du dispositif de fermentation.

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