Surface finish of reactor

US7473743B2 · kind B2 · utility

Assignee

• Total Petrochemicals Research Feluy · BE

Inventors

• Louis Fouarge · Dilbeek, BE
• Marc Van der Auwera · Tervuren, BE

Key dates

• Filing date: Jul 27, 2006
• Grant date: Jan 6, 2009
• Expiry date: Jul 27, 2026

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F110/02
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

This invention discloses the use in the production of a polyolefin of a slurry loop reactor wherein all internal parts in contact with the slurry are polished first by a mechanical process to a level of at most 70 RMS roughness value and are subsequently polished by a chemical or electrochemical process, to a final level of at most 40 RMS roughness value.