Olefin polymerization process with optimized product discharge

Details Olefin polymerization process with optimized product discharge Olefin polymerization process with optimized product discharge

2011-03-08

2011-03-08

Wu, David (Department: 1762)

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

Synthetic resins

Polymerizing in tubular or loop reactor

C526S072000, C526S088000, C526S089000, C422S106000, C422S108000

Reexamination Certificate

active

07902307

ABSTRACT:
The present invention relates to a polymerization process for producing olefin polymers in a loop reactor comprising the steps of: introducing into the loop reactor one or more olefin reactants, polymerization catalysts and diluents, and while circulating said reactants, catalysts and diluents, polymerizing said one or more olefin reactants to produce a polymer slurry comprising essentially liquid diluent and solid olefin polymer particles, said process further comprising one or more cycles of: (a) allowing said polymer slurry to settle in one or more setting legs connected to said reactor, and (b) discharging from a setting leg a predetermined volume of polymer slurry substantially equal to the volume of polymer slurry settled in said settling leg since its previous discharge.

REFERENCES:
patent: 3242150 (1966-03-01), Scoggin
patent: 3293000 (1966-12-01), Marwil

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