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A kind of polymerization reaction device and its application

A technology of polymerization reaction and polymerization reactor, which is applied in chemical/physical/physicochemical processes, chemical instruments and methods, chemical/physical processes, etc., and can solve problems such as poor performance of isoprene rubber and difficulty in glue transportation

Active Publication Date: 2016-08-17
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the problem of difficulty in glue transportation and the poor performance of the obtained isoprene rubber when the existing device is used to produce isoprene rubber, and to provide a kind of isoprene rubber that is convenient for stable production and transportation, and can be obtained. Polymerization reaction device with excellent properties of pentamethylene rubber and application of said polymerization reaction device

Method used

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  • A kind of polymerization reaction device and its application
  • A kind of polymerization reaction device and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] This example is used to illustrate the preparation of the isoprene rubber provided by the present invention.

[0039] according to figure 2 The polymerization reaction device shown is for the preparation of isoprene rubber, wherein, the capacity of all polymerization reaction tanks is 5L. With the flow rate of isoprene monomer at 0.93L / h, the flow rate of n-hexane at 5L / h, the n-hexane solution of neodymium catalyst (the concentration of catalyst is 0.5×10 -2 mol / L) is passed into the first kettle 5 with a flow velocity of 0.29L / h. Based on the total weight of the isoprene monomer, n-hexane and catalyst, the total content of isoprene monomer and isoprene rubber in the first kettle 5 is 15.3% by weight. After 48 minutes of polymerization in the first kettle 5, the conversion rate of isoprene monomer was 58%, and the first supplementary solvent device 9 between the first kettle 5 and the second kettle 6 was opened. Adjust the frequency of the metering pump to be 28Hz,...

Embodiment 2

[0044] This example is used to illustrate the preparation of the isoprene rubber provided by the present invention.

[0045] according to figure 2 The polymerization reaction device shown is for the preparation of isoprene rubber, wherein, the capacity of all polymerization reaction tanks is 5L. With the flow rate of isoprene monomer at 1.1L / h, the flow rate of n-hexane at 4.9L / h, the n-hexane solution of neodymium catalyst (the concentration of catalyst is 0.6×10 -2mol / L) is passed into the first kettle 5 with a flow velocity of 0.278L / h. Based on the total weight of the isoprene monomer, n-hexane and catalyst, the total content of isoprene monomer and isoprene rubber in the first kettle 5 is 17.3% by weight. After 47.8 minutes of polymerization in the first kettle 5, the conversion rate of isoprene monomer was 60%, and the first additional solvent addition device 9 between the first kettle 5 and the second kettle 6 was opened. Adjust the frequency of the metering pump to...

Embodiment 3

[0050] This example is used to illustrate the preparation of the isoprene rubber provided by the present invention.

[0051] according to figure 2 The polymerization reaction device shown is for the preparation of isoprene rubber, wherein, the capacity of all polymerization reaction tanks is 5L. With the flow rate of isoprene monomer at 1.05L / h, the flow rate of n-hexane at 3.62L / h, the n-hexane solution of neodymium catalyst (the concentration of catalyst is 0.5×10 -2 mol / L) is passed into the first kettle 5 with a flow velocity of 0.33L / h. Based on the total weight of the isoprene monomer, n-hexane and catalyst, the total content of isoprene monomer and isoprene rubber in the first kettle 5 is 21% by weight. After 60 minutes of polymerization in the first kettle 5, the conversion rate of isoprene monomer was 60%, and the first additional solvent addition device 9 between the first kettle 5 and the second kettle 6 was opened. Adjust the frequency of the metering pump to b...

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Abstract

The invention provides a polymerization reaction device and an application for the same in preparation for isoprene rubber. The device comprises a plurality of polymerization reaction kettles which are mutually connected in series, wherein the plurality of polymerization reaction kettles which are mutually connected in series comprise a first kettle and the polymerization reaction kettles behind the first kettle. The device further comprises a solvent replenishing device communicated with at least one polymerization reaction kettle behind the first kettle. By using the polymerization reaction device provided by the invention for preparation for isoprene rubber, stable production and conveying are facilitated, and isoprene rubber with excellent performance can also be obtained.

Description

technical field [0001] The invention relates to a polymerization reaction device and the application of the polymerization reaction device in the preparation of isoprene rubber. Background technique [0002] Industrialized commodity isoprene rubber is similar in structure to natural rubber, has excellent raw rubber strength and vulcanized rubber properties, and can meet the development needs of tires in terms of high speed, energy saving, safety and environmental protection. The production of rare earth isoprene rubber is mainly obtained by continuous solution polymerization using rare earth as a catalyst. In order to realize continuous industrial production, a polymerization reactor is generally composed of several reactors connected in series, and the final conversion rate of isoprene monomer reaches about 90%. Due to the large heat release of isoprene monomer in the polymerization process, the viscosity of isoprene rubber glue is also very large, which limits the single ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F2/01C08F36/08C08F136/08B01J19/00
Inventor 张杰辛益双李传清赵姜维杨亮亮董新民谭金枚孙伟欧阳素芳徐林于国柱梁爱民
Owner CHINA PETROLEUM & CHEM CORP
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