Spouted bed reactor and olefin polymerization method thereof

A technology of reactor and spouted bed, which is applied in the field of olefin polymerization, can solve the problems of slowing down flow velocity, deterioration of solid particle axial flow mixing, and failure to eliminate stagnation zone, so as to promote flow and improve particle movement , Improve the effect of heat transfer efficiency and mass transfer efficiency

Inactive Publication Date: 2013-07-24
ZHEJIANG UNIV
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Problems solved by technology

However, when the amount of gas diffused into the annular particle layer increases, the downward flow velocity of the solid particles in th

Method used

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  • Spouted bed reactor and olefin polymerization method thereof
  • Spouted bed reactor and olefin polymerization method thereof
  • Spouted bed reactor and olefin polymerization method thereof

Examples

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[0049] Example 1

[0050] Example 1 and Comparative Example 1 are the results of laboratory cold model experiments. The main purpose is to investigate the influence of the external circulation of solid particles on the movement speed of solid particles in the annulus zone and the axial particle mixing in the reactor by comparison with Comparative Example 1.

[0051] The structure of the spouted bed reactor cold model experimental device is as follows figure 1 Shown. versus figure 1 The difference is that the cold mold experimental device does not have an external gas circulation system. The compressed air from the air compressor is measured by a glass rotor flowmeter and divided into three streams, one as the main airflow, the other as the auxiliary airflow, and the third as the auxiliary airflow. Delivery gas of gas-solid jet pump. The diameter of the spouted bed reactor in the cold model experimental device is D=150 mm, and the cylinder height H=1000 mm. The size parameters of ...

Example Embodiment

[0061] Example 2

[0062] Example 2 and Comparative Example 2 are the results of industrial test thermal model experiments. The main purpose is to compare with Comparative Example 2 to investigate the influence of solid particles external circulation on particle agglomeration.

[0063] The structure of the industrial test device is as figure 2 Shown. In the industrial experimental device, the diameter of the spouted bed reactor is D=420 mm, and the cylinder height H=2500 mm. The size parameters of other parts of the spouted bed reactor and the main parameters of the solid particle external circulation system are shown in Table 3.

[0064] Table 3 Main parameters of industrial experimental equipment

[0065] Cylinder diameterD Bottom diameter of cone baffle0.4D Cylinder heightH Cone baffle height0.05H Diameter of enlarged section1.8D Number of solid particle conveying systems2 Expanded section height0.2H Diameter of solid particle circulation pipe0.1D Reduced diameterD Heig...

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Abstract

The invention discloses a spouted bed reactor and an olefin polymerization method thereof. The spouted bed reactor comprises a spouted bed reactor main body, a circulation gas system, and a solid particle conveying device. With the solid particle conveying device, solid particles in the spouted fluidized bed is subjected to external circulation, such that the flowing of solid particles and gas in bed layer and especially annulus areas is promoted, particle mixing in the reactor is enhanced, retention area is eliminated, heat transfer efficiency and mass transfer efficiency are improved, and possibilities of wall adhesion agglomeration is reduced. A material outlet port is arranged on an external circulation pipe, and is connected to a material discharge system, such that material discharge efficiency can be improved. Auxiliary gas flow is delivered to a reaction bottom diameter-reduction section. Production performance can be adjusted by changing the composition of main gas flow and auxiliary gas flow.

Description

Technical field [0001] The invention involves the field of olefin aggregation, especially a method of spraying bed reactor and its olefin polymerization. technical background [0002] The adhesive wall block of polymers is often encountered in olefin polymerization production, but it has not yet been solved well.Taking the gas polymerization reactor widely used in polyolefin production as an example, the adhesive wall block of the polymer seriously affects the stable operation of the long cycle of the gas polymerization reactor, which will even block the pipeline in severe cases, resulting in parking.Especially with the emergence of condensate operation technology, the condensation solution is injected into the gas phase aggregation reactor to enhance the heating ability in the reactor, thereby achieving the goal of greatly increase the time and space revenue of the reactor.Due to the existence of liquid and the enhancement of the viscosity between particles, it will exacerbate t...

Claims

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Application Information

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IPC IPC(8): B01J8/24C08F10/00C08F2/34C08F2/01
Inventor 黄正梁顾玉彬周业丰王靖岱阳永荣廖祖维蒋斌波訾灿杨勇柳莺
Owner ZHEJIANG UNIV
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