Device for cross-flow filtration

Details Device for cross-flow filtration Device for cross-flow filtration

B - Operations, Transporting

01

D

B01D 63/06 (2006.01) B01D 61/14 (2006.01) B01D 61/18 (2006.01) B01D 61/20 (2006.01) B01D 65/00 (2006.01) B01D 65/02 (2006.01) B01D 65/08 (2006.01)

Patent

CA 2490906

A device for cross-flow filtration includes a plurality of linear filtration modules arranged parallel to each other and branching from a manifold arranged such that a flow transverse to the front surface of the filtration module is generated in front of all filtration modules. A constant flow velocity transverse to the front faces of the filtration modules is achieved by reducing the open cross-section of the manifold in the direction of flow, the reduction being continuous or stepwise. By avoiding the build-up of fibrous clumps, the fault-free operating time of filtration device can be significantly lengthened with relation to a conventionally embodied filtration device.

L'invention concerne un dispositif de filtrage transversal comportant une pluralité de modules de filtrage parallèles (1) se détachant d'un distributeur (20). Selon l'invention, le distributeur (20) est conçu de manière à créer un flux perpendiculaire à la surface frontale des modules de filtrage (1), au niveau desdites surfaces frontales (1). De manière avantageuse, le dispositif selon l'invention comporte des éléments (26) destinés à régler la vitesse d'écoulement perpendiculairement à la surface frontale des modules de filtrage (1). De manière plus avantageuse, le flux perpendiculaire à la surface frontale des modules de filtrage (1) est le même sur tous les modules de filtrage (1). A cet effet, la section intérieure du distributeur (20) diminue dans le sens d'écoulement, de façon continue ou graduelle. La suppression de toute formation de paquets de fibres (7) permet d'augmenter la durée d'utilisation sans défauts d'un tel dispositif de filtrage, et donc d'améliorer la productivité.

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