Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

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
View PDF4 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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 the annular layer slows down, making the axial flow mixing of the solid particles worse
This solution also does not eliminate the "stuck area"

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • 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

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Example 1 and Comparative Example 1 are the results of laboratory cold model experiments. The main purpose is to compare the effect of external circulation of solid particles on the velocity of solid particles in the annulus area and the mixing of axial particles in the reactor by comparing with Comparative Example 1.

[0051] The structure of the spouted bed reactor cold model experimental device is as follows: figure 1 shown. and figure 1 The difference is that the cold mold experimental device does not have a gas external circulation system. The compressed air from the air compressor is measured by a glass rotameter and divided into three strands, one as the main airflow, the other as the auxiliary airflow, and the third as the auxiliary airflow. Gas-solid jet pump delivery gas. 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 other parts of the spouted bed reac...

Embodiment 2

[0062] Example 2 and Comparative Example 2 are the results of industrial pilot thermal model experiments, the main purpose of which is to investigate the effect of external circulation of solid particles on particle agglomeration through comparison with Comparative Example 2.

[0063] The structure of the industrial test device is as follows 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 external circulation system of solid particles are shown in Table 3.

[0064] Table 3 The main parameters of the industrial experimental device

[0065] cylinder diameter D Conical Baffle Bottom Diameter 0.4D cylinder height H Conical Baffle Height 0.05H Expanded section diameter 1.8D Quantity of solid particle conveying system 2 Extended section height 0.2H Solid p...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Diameteraaaaaaaaaa
Heightaaaaaaaaaa
Diameteraaaaaaaaaa
Login to View More

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
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
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com