Patent · US Active

Ethylene polymerization process having improved heat exchanger performance

US9809659B2 · kind B2 · utility

0Cited by

1References

24Claims

0Family size

Assignee

Basell Polyolefine GmbH · DE

Inventors

Giuseppe Penzo · Mantova, IT
Rodrigo Carvajal · Bonn, DE
Reinhard Kuehl · Bornheim, DE
Elke Damm · Bad Vilbel, DE

Key dates

Filing date	Jun 22, 2015
Grant date	Nov 7, 2017
Priority date	—
Expiry date	Jun 22, 2035

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P20/10
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A process for the preparation of polyethylene by polymerizing in a slurry ethylene and optionally one or more C3 to C10 alpha-olefins in a reactor system comprising a polymerization reactor and one or more first heat exchangers located outside the polymerization reactor where the slurry in the polymerization reactor is cooled by withdrawing slurry from the polymerization reactor, cooling the slurry in the one or more first heat exchangers and returning the cooled slurry to the polymerization reactor, wherein the one or more first heat exchangers are cooled by a first coolant having a temperature of 29° C. or higher.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.