Monolithic membrane filtration structure

US11628404B2 · kind B2 · utility

Assignee

• SAINT-GOBAIN CENTRE DE RECHERCHES ET D'ETUDES EUROPEEN · FR

Inventors

• Sébastien PINSON · Cavaillon, FR
• Paul LEPLAY · Robion, FR
• Malte MOELLER · Regensburg, DE
• Ronald Neufert · Aichach, DE
• Michael Faber · Braunschweig, DE

Key dates

• Filing date: Nov 29, 2018
• Grant date: Apr 18, 2023
• Expiry date: Apr 27, 2039

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01D2221/10
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

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.