Process for monitoring the polymerization of ethylene or ethylene and comonomers in a tubular-reactor at high-pressures

US9273162B2 · kind B2 · utility

Assignee

• Basell Polyolefine GmbH · DE

Inventors

• Sebastian Weiand · Cologne, DE
• Wolfgang Gsella
• Victor Kuhne · Cologne, DE
• Christian Schmidt · Bonn, DE
• Tom Zimmermann · Niederkassel, DE

Key dates

• Filing date: Dec 19, 2011
• Grant date: Mar 1, 2016
• Expiry date: Dec 30, 2032

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F2400/02
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A process for monitoring the polymerization of ethylene or ethylene and comonomers in the presence of free-radical polymerization initiator at pressures in the range of from 160 MPa to 350 MPa and temperatures in the range of from 100° C. to 350° C. in a tubular reactor with one or more reaction zones, which is equipped with cooling jackets for cooling the tubular reactor with a cooling medium, comprising a step of measuring as process parameters the temperature profile and the pressure of the reaction medium and the flow and temperature profile of the cooling medium along the reactor.