Hollow fiber membrane separation device with a housing made from a flexible material

US5380433A · kind A · utility

Assignees

• E.I. DU PONT DE NEMOURS AND COMPANY · US
• L'Air Liquide, S.A. · FR

Inventors

• Billy J. Etienne · Newark, US
• Wayne Lee Mills · Janesville, US
• Bruno Leprince-Ringuet · Paris, FR
• Frederic Fillet · Issy-les-Moulineaux, FR

Key dates

• Filing date: Jun 1, 1993
• Grant date: Jan 10, 1995
• Expiry date: Jun 1, 2013

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01D2313/206
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The present invention is a hollow fiber separation assembly having one or more bundles of hollow fiber membranes with a tubesheet at each end enclosed by an end cap. An impermeable housing, preferably made from a flexible polymeric material, most preferably a shrinkable tubing, contacts and encloses the bundle, extending between the end caps. The polymeric, impermeable housing contacts and compacts the array of fibers in the bundle to enhance axial flow along the outside of individual fibers, protects the fiber bundle between the end caps, and contains the permeated fluid and diverts it to a port or ports at the end(s) of the bundle. This hollow fiber separation device provides a large capacity, and is also low cost, lightweight, may be used as a stand-alone separation device, and does not have a high-pressure section which requires testing.