Process for improving the devolatilization of polymer slurry produced in a polymerization reactor
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United States of America Patent
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Dec 31, 2013
Grant Date -
Apr 25, 2013
app pub date -
Dec 4, 2012
filing date -
Oct 30, 2006
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Abstract
The present invention relates to a process for improving the devolatilization of polymer slurry produced in an olefin polymerization reactor. The process is characterized in that it involves an adjustment of the temperature of the interior surface of the flash line for periodically transferring polymer slurry from the polymerization reactor to a downstream processing unit. In particular, in accordance with the present process, the temperature of the interior surface of the flash line is adjusted to a temperature which is equal to or higher than the softening temperature of the polymer passing through said flash line whereby said temperature is higher in a first half of the length of the flash line than in the remaining length of the flash line.
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