Process for ethylene polymerization with improved slurry pump performance

US9650454B2 · kind B2 · utility

Assignee

• Basell Polyolefine GmbH · DE

Inventors

• Harald Prang · Lechenich, DE
• Suresh Babu Vatti · Visakhapatnam, IN
• Peter Rohrbach · Remchingen, DE
• Mudit Ashtana · The Hague, NL

Key dates

• Filing date: May 13, 2015
• Grant date: May 16, 2017
• Expiry date: May 13, 2035

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L2205/025
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A slurry polymerization process comprising polymerizing monomers in a reactor comprising baffles, a first slurry feed line for returning cooled slurry from a cooler and optionally a second slurry feed line for transferring reactor slurry from a previous reactor of a cascade of polymerization reactors, wherein the baffle top, the first slurry feed line discharge end and the second slurry feed line end are located below the reactor liquid level.