Equipment and process for gas-phase olefin polymerization
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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May 2, 2000
Grant Date -
N/A
app pub date -
Aug 21, 1997
filing date -
Aug 23, 1996
priority date (Note) -
Expired
status (Latency Note)
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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.
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