Ecolab USA Inc.

Bhaskar R Aluri

Jerome Vachon

Anthoni Van Zijl

Theodore C Arnst

Fabrice Cuoq

Russell P Watson

Steven Leen

Javier Florencio

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.

Method to disperse byproducts formed in dilution steam systems

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Hyderabad Telangana, India

Bhaskar R Aluri