Recycle gas cooler systems for gas-phase polymerization processes
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United States of America Patent
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Aug 9, 2016
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app pub date -
Nov 11, 2013
filing date -
Nov 12, 2012
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Abstract
Disclosed herein are improvements in recycle gas cooler systems in gas-phase polymerization processes that reduce the tendency for cooler fouling, including a recycle gas cooler system comprising a shell-and-tube heat exchanger. One or more of the tubes of the shell-and-tube heat exchanger may have a flared tube inlet at the tube sheet. The shell-and-tube heat exchanger may also be coupled to a straight inlet pipe having a length that is either at least about 5 times the inner diameter of the straight inlet pipe or at least about 15 feet, whichever is greater.
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