Reactor systems and processes for using the same

Details Reactor systems and processes for using the same Reactor systems and processes for using the same

2009-04-21

2011-11-29

Teskin, Fred M (Department: 1762)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymerizing in tubular or loop reactor

C526S068000, C526S918000, C422S132000

Reexamination Certificate

active

08067509

ABSTRACT:
A process for the polymerization of olefin's, including: introducing an olefin and a polymerization catalyst into a polymerization reactor to form a polyolefin, the polymerization reactor including: a fluidized bed region having a top and a bottom; and a motive bed region; wherein a first end of the motive bed region is fluidly connected to the top of the fluidized bed region; and wherein a second end of the motive bed region is fluidly connected to the bottom of the fluidized bed region; and wherein a diameter of the fluidized bed region is greater than a diameter of the motive bed region; circulating at least a portion of the olefin, the catalyst, and the polyolefin through the fluidized bed region and the motive bed region; maintaining a dense-phase fluidized bed within the fluidized bed region; recovering polyolefin from the fluidized bed region, is provided. A reactor system directed to the process is also provided.

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Cai, P. et al. 2005, “Polymerization Simulation Under Different Fluidization Regimes”,Proceedings of the 8thInternational Conference on Circulating Fluidized Beds, Hangzhou, China, pp. 410-417.

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