Process for separating components of a reaction mixture obtained by high-pressure polymerization of ethylenically unsaturated monomers with improved level control

US9637568B2 · kind B2 · utility

Assignee

• Basell Polyolefine GmbH · DE

Inventors

• Danir Khayrullin · Zeven, DE
• Michael Deuerling · Weilerswist, DE
• Christoph Wolf · Pulheim, DE
• Erich Neumann · Braunschweig, DE
• Claudio Fibla · Königstein, DE

Key dates

• Filing date: Dec 3, 2014
• Grant date: May 2, 2017
• Expiry date: Dec 3, 2034

Classification

• Technology area (CPC G): Physics
• CPC primary: G01F23/2885
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present disclosure generally relates to a process for separating polymeric and gaseous components of a reaction mixture obtained by high-pressure polymerization of ethylenically unsaturated monomers in the presence of free-radical polymerization initiators into a gaseous fraction and a liquid fraction in a separation vessel, wherein the filling level of the liquid fraction in the separation vessel is measured by a radiometric level measurement system comprising at least two radioactive sources and at least three radiation detectors, and the filling level is controlled by a product discharge valve which operates based on data coming from the level measurement system.