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AssigneesChina Petroleum & Chemical Corporation, Beijing Research Institute of Chemical Industry, China Petroleum & Chemical Corporation
InventorsXianzhi Xia, Tianyi Zhang, Yuexiang Liu, Jin Zhao
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Disclosed is a catalyst pre-contact method for the continuous polymerization of an olefin, wherein a primary catalyst, a co-catalyst and, optionally, an external electron donor are mixed and then undergo a pre-contact reaction, with the pre-contact reaction temperature being −30° C. to 35° C. and adjustable, and the pre-contact reaction time being 0.5 min to 10 min and adjustable, and the pre-contacted catalyst is brought into a catalyst prepolymerization system and then into a catalyst polymerization system, or is directly brought into the catalyst polymerization system. Further disclosed is a catalyst pre-contact device for the continuous polymerization of an olefin, which can adjust the pre-contact time and pre-contact temperature of the catalyst so that the performance of the catalyst achieves a better level according to the process.
A catalyst pre-contact method for continuous polymerization of olefins, comprising:
A catalyst pre-contact device, comprising:
A catalyst pre-contact device, comprising:
A catalyst pre-contact device comprising a plurality of catalyst pre-contact tanks connected in series, each of the plurality of catalyst pre-contact tanks being provided with a temperature adjustable jacket, wherein a catalyst, a cocatalyst and an optional external electron donor pass through one or more of the catalyst pre-contact tanks in series prior to entering a pre-polymeriztion unit or a polymerization unit, thereby a pre-contact time is controlled.
Dependencies are inferred from the claim text.