Optimization of a cooling water system of a polyolefin...

B - Operations – Transporting – 01 – J

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Details

B01J 19/00 (2006.01) B01J 19/18 (2006.01) B01J 19/24 (2006.01) C08F 2/00 (2006.01) C08F 10/00 (2006.01)

Patent

CA 2276446

The invention relates to a method for cooling polymerization reactors in the production of polyolefins, whereby the polymerization takes place in one first and at least one further reactor, whereby this further reactor, or reactors, is connected downstream of the first reactor, and each reactor is cooled by means of an internal cooling circuit, in which a cooling agent circulates. The invention is characterized in that the cooling agent leaves the cooling circuit (9) of the first reactor (1) to be fed into the cooling circuit (10) of at least one other reactor (2), and the same amount of cooling agent is removed from the cooling circuit (10) of this reactor (2), cooled and returned to the cooling circuit (9) of the first reactor (1).

L'invention concerne un procédé pour refroidir des réacteurs de polymérisation lors de la production de polyoléfines, la polymérisation se déroulant dans un premier réacteur et dans au moins un autre réacteur monté en aval du premier, et chacun des réacteurs étant refroidi par un circuit de refroidissement interne dans lequel circule un agent réfrigérant. L'invention est caractérisée en ce que l'agent réfrigérant quitte le circuit de refroidissement (9) du premier réacteur (1) pour pénétrer dans le circuit de refroidissement (10) d'au moins un autre réacteur (2), et la même quantité d'agent réfrigérant est prélevée du circuit de refroidissement (10) de ce réacteur (2), refroidie et réintroduite dans le circuit de refroidissement (9) du premier réacteur (1).

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