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. 16, 2021
Filed:
Aug. 23, 2017
Ecolab Usa, Inc., St. Paul, MN (US);
Sabic Global Technologies B.v., Bergen op Zoom, NL;
Jerome Vachon, Maastricht, NL;
Anthoni van Zijl, Eindhoven, NL;
Fabrice Cuoq, Beverwijk, NL;
Steven Leen, Bree, BE;
Carlo Geijselaers, Eindhoven, NL;
Andrew R. Neilson, Richmond, TX (US);
Russell P Watson, Idaho Falls, ID (US);
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. 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 total of a first polymerization inhibitor and second polymerization inhibitor to the process water to form a treated process water, wherein the first polymerization inhibitor has a pygas-water partition coefficient of about 0.0001 to 9 and the second polymerization inhibitor has a pygas-water partition coefficient of about 1000 to 50,000.