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. 31, 2020
Filed:
Dec. 27, 2016
Ecolab Usa Inc., St. Paul, MN (US);
Sabic Global Technologies B.v., Bergen op Zoom, NL;
Steven Leen, Bree, BE;
Fabrice Cuoq, Beverwijk, NL;
Anthoni van Zijl, Eindhoven, NL;
Jerome Vachon, Maastricht, NL;
Russell P. Watson, Idaho Falls, ID (US);
Theodore C. Arnst, Sugar Land, TX (US);
Javier Florencio, Reus, ES;
Bhaskar R. Aluri, Hyderabad, IN;
Ecolab USA Inc., St. Paul, MN (US);
Abstract
Disclosed herein are methods for reducing fouling caused by process water present within a water recycling loop of a pyrolysis plant. The process water includes water, a pygas, and in some cases pygas byproducts. Fouling is caused by phase separation and accumulation of materials from the process water on equipment surfaces. The method includes applying a total of about 5 ppm to 500 ppm of one or more antifouling polymers to the process water to form a treated process water. The one or more antifouling polymers are selected from the group consisting of copolymers of unsaturated fatty acids, primary diamines, and acrylic acid; copolymers of methacrylamidopropyl trimethylammonium chloride with acrylic acid and/or acrylamide; copolymers of ethylene glycol and propylene glycol; and blends of two or more thereof.