Patent · US Expired

Gas-phase fluidized-bed reactor

US6699438B1 · kind B1 · utility

1Cited by

5References

8Claims

0Family size

Assignee

Basell Polyolefine GmbH · DE

Inventors

Benno Knauer · Ludwigshafen, DE
Peter Hennenberger · Freinsheim, DE
Klaus Hilligardt · Schifferstadt, DE
Eckard Schauss · Heuchelheim, DE
Horst Bullack · Wesseling, DE

Key dates

Filing date	Jun 8, 1999
Grant date	Mar 2, 2004
Priority date	—
Expiry date	May 12, 2020

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S526/901
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

Ethylenically unsaturated monomers are polymerized in a gas-phase fluidized-bed reactor comprising a reactor space (1) in the form of a vertical tube, a calming zone (2) adjoining the upper part of the reactor space, a circulated gas line (3), a circulated gas compressor (4), a cooling apparatus (5), a gas distributor plate (6) which forms the lower boundary of the reactor space and, if desired, a flow divider (7), wherein the gas distributor plate (6) has a plurality of gas flow orifices (8) whose outlet sides are widened conically.

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