Control of fouling in high pressure polyethylene manufacture
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United States of America Patent
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Nov 19, 2019
Grant Date -
Oct 11, 2018
app pub date -
May 13, 2016
filing date -
Jun 30, 2015
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Abstract
Systems and processes for controlling fouling in the manufacture of ethylene polymers and copolymers at high pressure. Disclosed is a high pressure polyethylene polymerization system comprising a reactor, a primary compressor, and a secondary compressor, the secondary compressor comprising: a) a first stage, wherein the first stage comprises at least two cylinders, and the discharge pipes of the at least two cylinders are fluidly connected by a first stage discharge cross-connect pipe; b) a second stage; c) an interstage; and d) a first cooler applied to the interstage piping starting at a location within 10 meters downstream of the first stage discharge cross-connect pipe.
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