公开(公告)号：US10828605B2

公开(公告)日：2020-11-10

申请号：US15125294

申请日：2015-03-13

Applicant: BL Technologies Inc.

Inventor： Hua Wang ,  Hareesh Kumar Reddy Kommepalli ,  Andrew Philip Shapiro

IPC: B01D61/02 ,  B01D61/08 ,  C02F1/44 ,  E21B43/20 ,  C02F1/00

Abstract: A reverse osmosis unit for processing a feed solution is provided. The unit includes a pressure vessel includes an inlet end, an outlet end, and a vessel body extending between the inlet end and the outlet end. The reverse osmosis unit further includes a plurality of first membrane modules positioned within the pressure vessel. Each first membrane module of the plurality of first membrane modules has a first salt permeance value. At least one second membrane module is positioned within the pressure vessel and coupled in flow communication to the plurality of first membrane modules. The at least one second membrane module has a second salt permeance value that is different from the first salt permeance value.

公开(公告)号：US11607649B2

公开(公告)日：2023-03-21

申请号：US16961906

申请日：2019-02-08

Applicant: BL TECHNOLOGIES, INC.

Inventor： Paul Michael Smigelski, Jr. ,  David Olson ,  Rachel Gettings ,  Jack Howson ,  David Moore ,  Deborah De La Cruz ,  Hua Wang ,  Joel Caraher

IPC: B01D61/02 ,  B01D63/10 ,  B01D69/10 ,  B01D69/12 ,  B01D71/56

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.