B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
B01D 69/10 (2006.01) B01D 63/06 (2006.01)
Patent
CA 2503691
The invention relates to a membrane for the tangential filtration of a fluid. The inventive membrane comprises a porous support (2) which defines at least one flow channel (3) for the fluid flowing in a given direction (f) between an inlet (6) and an outlet (7). Moreover, the inner surface (4) of the porous support (2) defining the channel (3) is covered with at least one separation layer (5) for the fluid. The invention is characterised in that the support comprises variable partial clogging (c) which extends from the inner surface (4) of the support, comprising the separation surface. According to the invention, the aforementioned clogging creates an average porosity gradient on a section (8) of the support (2), extending from the inner surface (4) thereof and having a given constant section (e), the minimum average porosity being located at the inlet (6) and the maximum average porosity being located at the outlet (7).
Membrane pour la filtration tangentielle d'un fluide, ladite membrane comportant un support poreux (2) délimitant au moins un canal de circulation (3) pour le fluide circulant dans un sens donné (f) entre une entrée (6) et une sortie (7), la surface interne (4) du support poreux (2) délimitant le canal (3) étant recouverte par au moins une couche de séparation (5) pour le fluide, caractérisée en ce que le support présente un colmatage (c) partiel variable s'étendant à; partir de la surface interne (4) du support (2) sur laquelle la couche de séparation (5) est déposée, cedit colmatage créant, sur une tranche (8) du support (2) d'épaisseur constante donnée (e) s'étendant à partir de la surface interne (4) du support (2), un gradient de porosité moyenne, la porosité moyenne minimale étant située à l'entrée (6) et la porosité moyenne maximale à la sortie (7).
Robic
Technologies Avancees & Membranes Industrielles
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