Patent ID: 9669362
Date: 2017-06-06
CPC Classifications: B01D

Claim:
1. A membrane for the cross-flow filtration of a fluid to be treated that contains abrasive particles, comprising a porous support covered over part of its surface with a separation layer having a pore diameter smaller than that of the support, over which the fluid to be treated flows, characterized in that the separation layer is based on or consists exclusively of TiO 2 , Al 2 O 3 , or ZrO 2 , either by itself or as a mixture, and in that the separation layer includes an agent for protection from the abrasive particles, intended to protect the separation layer from abrasive attack, the protection agent: being deposited on the surface of the separation layer or completely or partially incorporated into the latter, so as to be located flush with or extending beyond the surface of the separation layer over which the fluid to be treated flows, being of inorganic nature, and being in a form of individualized protection elements having a size from 1 μm to 1 mm.