Membrane stack unit for multichamber processes

US4990230A · kind A · utility

Assignee

• Forschungszentrum Geesthacht · DE

Inventors

• Hartwig Voss · Bischofswerda, DE
• Klemens Kneifel · Geesthacht, DE
• Uwe Martens · Duisburg, DE

Key dates

• Filing date: Mar 5, 1990
• Grant date: Feb 5, 1991
• Expiry date: Mar 5, 2010

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01D63/084
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A membrane stack unit for performing a multichamber treatment of plural component fluids, composed of a plurality of sealing frames, membranes interposed between the frames, and two end plates with integrated electrodes disposed at respective opposite ends of the unit with the frames and membranes interposed therebetween. Each frame has four side edges enclosing a region constituting a treatment chamber, with one pair of opposed side edges being provided with a set of through bores for conducting fluid, a set of second bores, and inlet and discharge channels each communicating with a respective second bore and with the chamber, and the second pair of opposed side edges being provided with through bores for conducting fluid. Each membrane is provided with openings aligned with all of the bores. The sealing frames are oriented relative to one another such that at least some of the through bores in one frame are aligned with respective ones of the second bores of another frame. Each end plate is provided with a plurality of bores forming flow paths with selected ones of the bores in the sealing frames, and a plurality of fluid flow channels communicating with the bores in that end pla…