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:
Mar. 21, 2023
Filed:
Feb. 08, 2019
Bl Technologies, Inc., Minnetonka, MN (US);
Paul Michael Smigelski, Jr., Niskayuna, NY (US);
David Olson, Minnetonka, MN (US);
Rachel Gettings, Niskayuna, NY (US);
Jack Howson, Niskayuna, NY (US);
David Moore, Niskayuna, NY (US);
Deborah De La Cruz, Vista, CA (US);
Hua Wang, Niskayuna, NY (US);
Joel Caraher, Niskayuna, NY (US);
BL TECHNOLOGIES, INC., Minnetonka, MN (US);
Abstract
A spiral wound membrane module is suitable for use with high temperature water that may also have a high pH, for example steam injection produced water. The module uses a membrane with a polyphenylene sulfide (PPS) backing material. The feed spacer of the module may be made from polyphenylene sulfide (PPS) or ethylene chlorotrifluoroethylene (ECTFE). The permeate carrier may be made of a woven nylon (i.e. nylon 6, 6) fabric coated with high temperature epoxy. The core tube and anti-telescoping device may be made of polysulfone. In some examples, the module may be used at a temperature of up to 130° C. Optionally, the module may be used at a pH of 9.5 or more. In a filtration method, the module may be operated at a pressure in the range of 150 to 450 psi. The module may be operated at a generally constant pressure.