Equipment and process for gas-phase olefin polymerization

Chemical apparatus and process disinfecting – deodorizing – preser – Chemical reactor – Fluidized bed

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422144, 422145, B01J 824, C08F 234

Patent

active

060569271

ABSTRACT:
The invention relates to an equipment for gas-phase polymerization of olefin(s), including a reactor with a fluidized and optionally mechanically stirred bed, and a conduit for withdrawing polymer, provided with an isolation valve, and a conduit for emptying polymer, provided with an isolation valve, the said conduits connecting the side wall of the reactor to a single recovery gas lock equipped with a discharge valve, equipment characterized in that the withdrawal conduit leaves the side wall of the reactor at a height of the reactor wall, above the fluidization grid, ranging from 0.60.times.H to 0.95.times.H, while being directed downwards, with the result that any part of the said conduit forms with a horizontal plane an angle A ranging from 35 to 90.degree., and in that the emptying conduit leaves the side wall of the reactor at a height of the reactor wall, above the fluidization grid, ranging from 0.01.times.H to 0.20.times.H.

REFERENCES:
patent: 4003712 (1977-01-01), Miller
patent: 5171541 (1992-12-01), Raufast
patent: 5382638 (1995-01-01), Bontemps et al.
patent: 5633333 (1997-05-01), Chinh

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