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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.:

US 11718540 B1

PDFFull Text
Date of Patent:
Aug. 08, 2023

Filed:

Aug. 28, 2019

Enhanced foam fractionation of oil phase from aqueous/oil mixed phase via increased viscoelasticity

Applicant:

Ecolab Usa Inc., Saint Paul, MN (US);

Inventors:

Victor Fuk-Pong Man, Saint Paul, MN (US);

Michael Charles Denoma, Saint Paul, MN (US);

Steven E. Lentsch, Saint Paul, MN (US);

Assignee:

Ecolab USA Inc., Saint Paul, MN (US);

Attorney:

McKee, Voorhees & Sease, PLC

Primary Examiner:

Christopher Upton

Int. Cl.
CPC ...
C02F 1/24 (2023.01); B01D 17/04 (2006.01); B01D 19/02 (2006.01); B01D 19/04 (2006.01); B03D 1/004 (2006.01); B03D 1/008 (2006.01); B03D 1/24 (2006.01); B09C 1/08 (2006.01); B03D 1/01 (2006.01); B03D 1/012 (2006.01); B03D 1/014 (2006.01); C02F 1/00 (2023.01); C02F 1/32 (2023.01); C02F 1/44 (2023.01); C02F 1/68 (2023.01); C02F 101/20 (2006.01); C02F 101/32 (2006.01); C02F 103/00 (2006.01); C02F 103/30 (2006.01); C02F 103/32 (2006.01); E02B 15/04 (2006.01);
U.S. Cl.
CPC ...
C02F 1/24 (2013.01); B01D 17/047 (2013.01); B01D 19/02 (2013.01); B01D 19/0404 (2013.01); B03D 1/008 (2013.01); B03D 1/0043 (2013.01); B03D 1/24 (2013.01); B09C 1/08 (2013.01); B03D 1/01 (2013.01); B03D 1/011 (2013.01); B03D 1/012 (2013.01); B03D 1/014 (2013.01); B03D 2201/04 (2013.01); B03D 2203/006 (2013.01); C02F 1/004 (2013.01); C02F 1/32 (2013.01); C02F 1/444 (2013.01); C02F 1/682 (2013.01); C02F 1/683 (2013.01); C02F 2101/20 (2013.01); C02F 2101/32 (2013.01); C02F 2103/007 (2013.01); C02F 2103/30 (2013.01); C02F 2103/32 (2013.01); C02F 2303/24 (2013.01); C02F 2305/04 (2013.01); E02B 15/041 (2013.01);
Abstract

The present invention provides improved methods for purifying and/or removing oily particles, and/or contaminants suspended or dissolved in water. In particular the process relates to an additive composition that has the appropriate surfactant characteristics for effectively removing an oil phase from an oil/aqueous mixed phase via foam fractionation. According to the invention, a hydrophobically modified polymer that acts as an associative thickener is combined with surfactant in appropriate ratios to facilitate oil removal for water purification in any of a number of commercial, environmental and industrial applications.

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