The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 28, 1995
Filed:
Sep. 16, 1994
Thomas J Eckman, Hockessin, DE (US);
E. I. Du Pont de Nemours and Company, Wilmington, DE (US);
Abstract
A cartridge containing a plurality of hollow fiber membranes is disclosed. The cartridge comprises a plurality of fibers arranged in a bundle and at least one end of the bundle embedded in a tubesheet. The tubesheets are fitted with end caps to provide a chamber for the permeate. A feed tube extends longitudinally through the bundle and a permeate discharge tube is housed, preferably concentrically, within a feed tube. The cartridge does not require a high pressure seal, such as an O-ring seal, against the inner wall of the pressure vessel. The cartridge is configured as a single unit adapted for simple drop-in installation into a pressure vessel. Multiple cartridges may readily be inserted into a pressure vessel, and arranged so as to operate in series or in parallel. The hollow fiber membrane cartridge is adapted for industrial performance with high volumetric efficiency and high solute rejection. In addition, a process for installing the cartridges in a pressure vessel previously using spiral wound elements is disclosed.