High-pressure polymerization process of ethylenically unsaturated monomers

US10562986B2 · kind B2 · utility

Assignee

• Basell Polyolefine GmbH · DE

Inventors

• Andrei Gonioukh · Liblar, DE
• Thomas Herrmann · Cologne, DE
• Dieter Littmann · Heßheim, DE
• Andre-Armand Finette · Cologne, DE
• Sven Wolfram · Euskirchen, DE

Key dates

• Filing date: May 9, 2017
• Grant date: Feb 18, 2020
• Expiry date: May 9, 2037

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F2400/02
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A process for polymerizing or copolymerizing ethylenically unsaturated monomers at pressures in the range of from 110 MPa to 500 MPa in a production line comprising a continuously operated polymerization reactor, wherein the process comprises monitoring the surrounding of the production line with respect to an occurrence of a leakage of monomers or of reaction mixture by an IR point detector arrangement of at least three groups of IR point detectors which are capable of detecting hydrocarbons and the groups of IR point detectors are operating according to a voting logic and starting automatically an emergency pressure release program when a group of IR point detectors of the IR point detector arrangement detects the presence of hydrocarbons.