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Olefinic polymerization reactor and polymerization method

An olefin polymerization and reactor technology, applied in the field of polymer material synthesis, can solve problems such as complex structure and narrow molecular weight distribution, and achieve the effect of simple process, wide molecular weight distribution and good performance

Inactive Publication Date: 2012-09-19
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this reactor still has the disadvantages of complex structure and narrow molecular weight distribution

Method used

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  • Olefinic polymerization reactor and polymerization method
  • Olefinic polymerization reactor and polymerization method
  • Olefinic polymerization reactor and polymerization method

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Embodiment Construction

[0030] figure 1 A schematic diagram of a typical structure of a prior art polymerization reactor is shown. As shown in the figure, the reactor body 1 of the polymerization reactor 40 is a cylindrical vertical stirred tank, and both ends are closed with ellipsoidal heads. A jacket 5 is provided outside the kettle body 1 to remove part of the heat of reaction. A solid phase feed port 6, an overflow port 7, a jacket cooling water inlet 11 and a jacket cooling water outlet 12 are provided on the kettle wall. Preferably, a spiral deflector can also be provided between the jacket 5 and the kettle body 1 to enhance the degree of flow measurement of the cooling water in the jacket. A liquid-phase feed pipe 9 is provided at the upper end of the ellipsoid head of the reactor body 1 for supplying liquid-phase raw materials, such as hexane.

[0031] The reactor also includes a stirring device 2, which includes a driving mechanism 2a arranged outside the kettle, a stirring shaft 2b conn...

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Abstract

An olefinic polymerization reactor comprises a polymerization kettle body, wherein a stirring device and an air distributing device are arranged in the polymerization kettle body; and the air distributing device comprises a plurality of air inlet pipes which are uniformly distributed in the axial direction. The olefinic polymerization reactor is characterized in that a divider is also arranged in the polymerization kettle body and is used for dividing the area in the polymerization kettle body into a first area in the divider and a second area between the divider and the polymerization kettle body; and the temperature of the first area is different from that of the second area. The olefinic polymerization reactor provided by the invention has the advantages that multi-temperature-area reaction is realized through the single reactor, the process is simple and the operation is convenient; and obtained polyolefin has wider molecular weight distribution and favorable performance.

Description

technical field [0001] The invention relates to the field of polymer material synthesis, in particular to a polymerization reactor for olefin polymerization and a polymerization method using the polymerization reactor. Background technique [0002] It is well known that the polymerization of olefins is closely related to temperature. On the one hand, the molecular weight of the polymer is affected by the temperature. Polymerization at a lower temperature will form a polymer with a higher molecular weight, while polymerization at a higher temperature will form a polymer with a lower molecular weight. On the other hand, the activity of the catalyst is related to the reaction temperature. If the molecular weight of the polymer is changed by adjusting the temperature in a single polymerization reactor, the speed of the polymerization reaction will be uncontrollable. Therefore, in laboratory polymerization and industrial scale production, the temperature of the polymerization r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F10/00C08F2/01C08F210/16
Inventor 王靖岱阳永荣訾灿黄正梁蒋斌波孙婧元张擎何乐路陈美娟周业丰朱子川廖祖维
Owner ZHEJIANG UNIV
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