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Production device for synthesizing small-molecular-weight polyphenyl ether

A production equipment and small molecular weight technology, applied in chemical instruments and methods, chemical/physical processes, etc., can solve the problems of low heat transfer efficiency, complicated product purification process, poor mass transfer effect, etc., and achieve the effect of simplifying the process flow

Active Publication Date: 2018-08-07
上海载正化工科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the traditional polyphenylene ether synthesis process, most of the reactors with agitation (or multi-stage agitation) and cooling jackets in series are used as catalysts with 2,6-dimethylphenol and oxygen (air) as raw materials. Although the oxidative coupling polymerization reaction under the action can realize the industrial production of polyphenylene ether, the oxidative coupling polymerization reaction of 2,6-dimethylphenol is a strong exothermic reaction (the heat of reaction is about 167KJ / mol), and The inherent shortcomings of the reactor, such as uneven dispersion of raw materials, catalysts and oxygen, poor mass transfer effect, low heat transfer efficiency, etc., can only produce large molecular weight polyphenylene ether, and there are many side reactions, and the heat of reaction is difficult to remove, resulting in product purification The process is complex, the process is long, and the product quality is not easy to be stable and other constraints
[0003] In addition, it is difficult to synthesize low-molecular-weight polyphenylene ether products in the above-mentioned traditional reactors, resulting in poor performance and color, which restricts the application field of polyphenylene ether

Method used

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  • Production device for synthesizing small-molecular-weight polyphenyl ether

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] use figure 1 Shown equipment, first reactor (1) structure:

[0069] Shell side of the first reactor: the height of the cylinder is 1000mm, the diameter is 50mm, the distance between the baffles is 100mm, and the quantity is 8 pieces;

[0070] The first reactor tube pass: the number of tube bundles is 1, the length is 1000mm, the diameter of the tube bundle is 20mm, the number of dispersed components in the tube bundle is 10, and the specific surface area is 500m 2 / m 3 , the porosity is 0.05%; the length is 100mm;

[0071] use figure 1 The equipment shown, the second reactor structure:

[0072] The second reactor cylinder has a height of 1500mm and a diameter of 150mm;

[0073] Inside the barrel of the second reactor,

[0074] The diameter of the main pipe is 20mm; the length is 120mm;

[0075] The diameter of the branch pipe is 10mm; the number is 6;

[0076] There are distribution caps on the branch pipes: the number is 12; metal sintered wire mesh hollow cyli...

Embodiment 2

[0086] use figure 1 Shown equipment, first reactor (1) structure:

[0087] Shell side of the first reactor: the height of the cylinder is 10000mm, the diameter is 500mm, the distance between the baffles is 180mm, and the quantity is 50 pieces;

[0088] The first reactor tube pass: the number of tube bundles is 1000, the length is 10000mm, the diameter of the tube bundle is 5mm, the number of dispersed components in the tube bundle is 10, and the specific surface area is 500m 2 / m 3 , the porosity is 0.05%; the length is 100mm;

[0089] use figure 1 The equipment shown, the second reactor structure:

[0090] The height of the second reactor cylinder is 10000mm, and the diameter is 5000mm;

[0091] Inside the barrel of the second reactor,

[0092] The diameter of the main pipe is 300mm; the length is 5000mm;

[0093] The diameter of the branch pipe is 20mm; the quantity is 200;

[0094] There are distribution caps on the branch pipes: the quantity is 400; metal sintered ...

Embodiment 3

[0104] use figure 1 Shown equipment, first reactor (1) structure:

[0105] Shell side of the first reactor: the height of the cylinder is 500mm, the diameter is 25mm, the distance between the baffles is 10mm, and the quantity is 45 pieces;

[0106] The first reactor tube pass: the number of tube bundles is 3, the length is 500mm, the diameter of the tube bundle is 5mm, the number of dispersed components in the tube bundle is 40, and the specific surface area is 1000m 2 / m 3 , the porosity is 0.1%; the length is 10mm;

[0107] use figure 1 The equipment shown, the second reactor structure:

[0108] The second reactor cylinder has a height of 500mm and a diameter of 50mm;

[0109] Inside the barrel of the second reactor,

[0110] The diameter of the main pipe is 20mm; the length is 50mm;

[0111] The diameter of the branch pipe is 5mm; the number is 8;

[0112] There are distribution caps on the branch pipes: the number is 16; metal sintered wire mesh hollow cylinder, th...

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Abstract

The invention discloses a production device for synthesizing small-molecular-weight polyphenyl ether. The production device comprises a first reactor and a second reactor, the first reactor is a tubular reactor, a first discharging port in the first reactor is connected with a second feeding port of the second reactor, a second discharging port of the second reactor is connected with a first feeding port in the first reactor, and the first reactor and the second reactor form a circular reaction system.

Description

technical field [0001] The application relates to a chemical engineering equipment, in particular to a production equipment for synthesizing low molecular weight polyphenylene ether. Background technique [0002] In the traditional polyphenylene ether synthesis process, most of the reactors with agitation (or multi-stage agitation) and cooling jackets in series are used as catalysts with 2,6-dimethylphenol and oxygen (air) as raw materials. Although the oxidative coupling polymerization reaction under the action can realize the industrial production of polyphenylene ether, the oxidative coupling polymerization reaction of 2,6-dimethylphenol is a strong exothermic reaction (the heat of reaction is about 167KJ / mol), and The inherent shortcomings of the reactor, such as uneven dispersion of raw materials, catalysts and oxygen, poor mass transfer effect, low heat transfer efficiency, etc., can only produce large molecular weight polyphenylene ether, and there are many side react...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J8/24C08G65/44
CPCB01J8/24C08G65/44
Inventor 安丽华
Owner 上海载正化工科技发展有限公司
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