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Vapor phase polymerization system and nozzle device thereof

A nozzle device and gas-phase polymerization technology are applied in the field of gas-phase polymerization system and nozzle device, which can solve problems such as easy blockage, and achieve the effect of overcoming a large amount of sheet polymer waste.

Active Publication Date: 2015-08-05
CHNA ENERGY INVESTMENT CORP LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The main purpose of the present invention is to provide a gas phase polymerization system and its nozzle device, to solve the problem of easy blockage in the gas phase polymerization system in the prior art

Method used

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  • Vapor phase polymerization system and nozzle device thereof
  • Vapor phase polymerization system and nozzle device thereof
  • Vapor phase polymerization system and nozzle device thereof

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Embodiment Construction

[0031] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0032] According to one aspect of the present invention, a nozzle device is provided, please refer to Figure 1 to Figure 6 , the nozzle device comprises: a catalyst feed pipe 10; an auxiliary gas injection pipe 20, the auxiliary gas injection pipe 20 is inserted in the catalyst feed pipe 10, and a mixing chamber is formed between the catalyst feed pipe 10 and the auxiliary gas injection pipe 20 Chamber 11, the mixing chamber 11 extends toward the nozzle device's ejection outlet direction; wherein, the pipe wall of the pipe section of the auxiliary gas injection pipe 20 located in the catalyst feed pipe 10 is provided with a first through hole 21 and a second through hole Hole 22, the extensio...

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Abstract

The invention provides a vapor phase polymerization system and a nozzle device thereof. The nozzle device comprises a catalyst feeding pipe and an auxiliary gas injection pipe, wherein the auxiliary gas injection pipe is inserted in the catalyst feeding pipe, and a mixing chamber is formed between the catalyst feeding pipe and the auxiliary gas injection pipe and extends towards the direction of an injection opening of the nozzle device; a first through hole and a second through hole are formed in a pipe wall of a pipe section, positioned in the catalyst feeding pipe, of the auxiliary gas injection pipe, and extending directions of the first through hole and the second through hole are inclined to the material flowing direction in the nozzle device; in the material moving direction, the outlet of the first through hole faces the outer side of the auxiliary gas injection pipe, and the outlet of the second through hole faces the inner side of the auxiliary gas injection pipe. According to the nozzle device, a catalyst and auxiliary gas can be mixed uniformly, and the problems that the existing nozzle device generates multiple sheet polymer wastes, and polymer fine powder blocks condenser distribution plates are overcome.

Description

technical field [0001] The invention relates to the technical field of gas phase polymerization, in particular to a gas phase polymerization system and a nozzle device thereof. Background technique [0002] At present, liquid catalysts such as Ziegler-Natta, metallocene, chromium series, and rare earth metals are widely used in gas-phase polymerization reactions such as ethylene and propylene due to their high catalytic efficiency and strong adaptability. [0003] During gas-phase polymerization, liquid catalysts form larger catalyst droplets in injection tubes and reactors, resulting in the formation of a large number of spherical hollow polymer particles and sheet-like polymer structures, resulting in high yields of off-spec products and high operating costs. Smaller liquid catalyst droplets form a large amount of resin fine powder during the polymerization process. Since the fine powder is difficult to separate from the circulating gas, it will enter the condenser, circul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J19/26
Inventor 司天保王鹤鸣关丰忠李国锋杜善明肖健凌云志张箭飞吕海蛟董传雷林海吴国祥郭晓东刘义
Owner CHNA ENERGY INVESTMENT CORP LTD
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