High throughput reactor assembly for polymerization of olefins

US9192903B2 · kind B2 · utility

Assignee

• Borealis AG · AT

Inventors

• Gunter Weickert · Ahaus, DE
• Erik Eriksson · Helsinki, FI
• Michiel Bergstra · Berchem, BE
• Klaus Nyfors · Porvoo, FI

Key dates

• Filing date: Mar 2, 2012
• Grant date: Nov 24, 2015
• Expiry date: Aug 12, 2032

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J2219/1947
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Reactor assembly for the production of polymers including a fluidized bed reactor (1) comprising a bottom zone (5), a middle zone (6) and an upper zone (7), an inlet (8) for the fluidization gas located in the bottom zone (5), an outlet (9) for the fluidization gas located in the upper zone (7); the outlet (9) for the fluidization gas being coupled with the fluidized bed reactor (1) via inlet (8) via a gas circulation line; means for separation of solids from gas (2) being connected to said gas circulation line; the equivalent cross-sectional diameter of the upper zone (7) being monotonically decreasing with respect to the flow direction of the fluidization gas through the fluidized bed reactor; the middle zone (6) having an essentially constant equivalent cross-sectional diameter with respect to the flow direction of the fluidization gas through the fluidized bed reactor; the equivalent cross-sectional diameter of the bottom zone (5) being monotonically increasing with respect to the flow direction of the fluidization gas through the fluidized bed reactor; characterized in that the ratio of the height of the fluidized bed reactor to the equivalent cross-sectional diameter of the m…