PROCESS FOR PREPARING ETHYLENE POLYMERS IN A SLURRY POLYMERIZATION
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United States of America
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Feb 13, 2025
app pub date -
Dec 20, 2022
filing date -
Dec 20, 2022
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Abstract
A process for polymerizing or copolymerizing ethylene in a slurry polymerization in a reactor system including a polymerization reactor, one or more first heat exchangers located outside the polymerization reactor, and a closed loop of a tempering medium for cooling or heating the first heat exchangers, which closed loop is equipped with second heat exchangers for cooling the tempering medium and third heat exchangers for heating the tempering medium, and wherein, during the polymerization, the slurry is cooled in the first heat exchangers, the temperature of the tempering medium cooling the first heat exchangers is in the range from 20° C. to 50° C., and the tempering medium is cooled in the second heat exchangers by a coolant, having a temperature from −20° to 45°° C.
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