METHOD AND APPARATUS FOR CONTROLLING THE RECOVERY OF SOLID POLYOLEFIN FROM A CONTINUOUS REACTION ZONE

METHOD AND APPARATUS FOR CONTROLLING THE RECOVERY OF SOLID POLYOLEFIN FROM A CONTINUOUS REACTION ZONE

A polymerisation process and a loop reactor comprising polymerising olefins in a liquid diluent to produce a liquid slurry containing particles of normally solid polymer within the loop reactor, allowing the polymer to settle in a settling leg, periodically opening a 180 DEG rotating product take-of...

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1. Verfasser: VERLEYSEN, MARK
Format: Patent
Sprache:eng ; fre ; ger
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CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
THEIR RELEVANT APPARATUS
TRANSPORTING
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creator VERLEYSEN, MARK
description A polymerisation process and a loop reactor comprising polymerising olefins in a liquid diluent to produce a liquid slurry containing particles of normally solid polymer within the loop reactor, allowing the polymer to settle in a settling leg, periodically opening a 180 DEG rotating product take-off valve located at the end of the settling leg to allow a charge of particles to flow out of the settling leg, the product take-off valve being operated by a pneumatically driven double-acting actuator, the pneumatic system being regulated by a system comprising pneumatic control valves, the improvement which consists in using automatic control valves, which are automatic V-ball valves.
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subjects CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
THEIR RELEVANT APPARATUS
TRANSPORTING
title METHOD AND APPARATUS FOR CONTROLLING THE RECOVERY OF SOLID POLYOLEFIN FROM A CONTINUOUS REACTION ZONE
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