Tangential filter with a supporting element including a set of channels

A tangential filter for the filtration of a fluid, comprising a support element made from a porous inorganic material, said element having a tubular shape delimited by an outer surface and comprising in its inner portion a set of adjacent channels, having axes that are parallel to one another and separated from one another by walls of said porous inorganic material, wherein said channels are covered over their inner surface with a membrane separation layer intended to come into contact with said fluid to be filtered circulating in said channels, wherein, along a transverse plane perpendicular to a central axis of said tubular support element:

• a) said support element comprises in its central portion only inner channels that do not share a common wall with its outer surface, said inner channels having a substantially equivalent hydraulic diameter,
• b) said support element additionally comprises peripheral channels, including at least two adjacent peripheral first and second channels, each of said first and second channels sharing a common wall with said outer surface,
• c) a ratio Dh of:
• a hydraulic diameter DhA of the first channel to
• a hydraulic diameter DhB of the second channel,
• is greater than or equal to 1.1,
• d) a number of peripheral second channels is greater than or equal to a number of peripheral first channels,
• e) the second channel has a hydraulic diameter DhB substantially identical to a hydraulic diameter of the inner channels,
• wherein at least one inner channel does not share a common wall with a peripheral first channel.