Cross-flow filter membrane and method of manufacturing it
AssigneeTechnologies Avancees & Membranes Industrielles
InventorsAndré Grangeon, Philippe Lescoche, Thomas Fleischmann, Bernd Ruschel
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Abstract
The invention provides a membrane for cross-flow filtering of a fluid to be treated, said membrane comprising an inorganic rigid porous support defining at least one flow channel for the fluid to be treated flowing in a given direction, the surface of the channel being covered in at least one separator layer separating out from the fluid to be treated a fraction referred to as the permeate which passes through the layer and the support. According to the invention, the separator layer presents a thickness gradient that decreases in the flow direction of the fluid to be treated.
Claims7
A method of making a membrane for cross-flow filtering of a fluid to be treated, comprising:
- providing an inorganic support having a first end and an opposite second end, and defining at least one flow channel being open therethrough and open at said first end and defining an inlet for the fluid to be treated, and open at the opposite end and defining an outlet for the fluid to be treated, the fluid being treated thereby flowing therethrough in a given direction from the open inlet end to the open outlet end, and
- covering the surface of the channel with at least one separator layer for separating the fluid to be treated, the layer presenting a thickness gradient that decreases from the oven inlet end to the opposite open outlet end in the flow direction of the fluid to be treated.
Dependencies are inferred from the claim text.