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Control moisture problems in slurry-based polyolefin operations

05.01.2012  |  Mitra, S. ,  University of Newcastle, New South Wales, Australia

Proper moisture removal from the polymerization-reaction medium is key to successfully operating a HDPE plant designed on low-pressure, slurry-process technology.

Keywords: [polyethylene] [catalysts] [maintenance] [pumps] [hexane] [high density polyethylene]

Proper moisture removal from the polymerization-reaction medium is the key to successfully operating a high-density polyethylene (HDPE) plant designed based on low-pressure, slurry-process technology. Due to the low-pressure operation and no catalyst recovery system, the Ziegler-Natta catalyst is highly sensitive to moisture in the reaction medium. The reaction rate can be terminated due to a breakdown of the catalyst.

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