Patent · US Active

Apparatus and process for the gas-phase polymerization

US12330147B2 · kind B2 · utility

0Cited by

1References

20Claims

0Family size

Assignee

Basell Polyolefine GmbH · DE

Inventors

Giuseppe Penzo · Mantova, IT
Maurizio Dorini · Mantova, IT
Riccardo Rinaldi · Ferrara, IT
Silvia Soffritti · Ferrara, IT
Giulia Mei · Ferrara, IT

Key dates

Filing date	Dec 9, 2020
Grant date	Jun 17, 2025
Priority date	—
Expiry date	Apr 26, 2042

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F10/00
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

Apparatus for carrying out a catalytic gas-phase olefin polymerization having a first polymerization zone for growing polymer particles to flow upward under fast fluidization or transport conditions, a second polymerization zone for the growing polymer particles to flow downward, and a gas/solid separation zone; wherein the second polymerization zone has an upper part being connected to the separation zone and a lower part being connected to the upper part; wherein the ratio of the height H01 of the separation zone to the diameter D01 of the separation zone is 2.5 to 4.5.

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