Patent ID: 11628404

Abstract:
A monolithic membrane-type filtration structure for filtering liquids, includes a support formed of a porous inorganic material of permeability Ks, the support having a tubular overall shape with a main axis, an upstream base, a downstream base, a peripheral wall delimiting an internal part and a plurality of passages parallel to the main axis of the support, formed in the internal part of the support, a membrane of permeability Km and of mean thickness tm covering the internal surface of the passages; the external hydraulic diameter of the structure satisfying the relationship Øf=α×[A+B×log10 (Ks×tm/Km)]; in which α is a coefficient between 0.85 and 1.15, and A=−21570×entint2−18.6×Dh+19.0×eint−2.5×eext+0.1244 B=−11760×Dh×eint+9.7×eint+3.1×eext+0.04517. Dh is the mean hydraulic diameter of the passages, eint is the minimum thickness of the internal walls between the passages, eext is the minimum thickness of the peripheral wall of the filter.