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Hexamethylene diamine synthesis reaction system

A synthesis reaction and hexamethylenediamine technology, applied in the preparation of amino compounds, organic compounds, chemical instruments and methods, etc., can solve the problems of poor material contact, inconvenient maintenance, low reaction efficiency, etc., to achieve full contact Good, rapid response, high yield effect

Inactive Publication Date: 2018-09-07
淄博恒亿化工科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The purpose of the present invention is to provide a hexamethylenediamine synthesis reaction system aimed at the technical defects of the prior art, so as to solve the technical problems of poor material contact and low reaction efficiency in the prior art hexamethylenediamine synthesis reaction device
[0014] Another technical problem to be solved by the present invention is that in the prior art hexamethylenediamine synthesis reaction device, its stirring mechanism easily leads to material leakage, and it is not easy to maintain

Method used

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  • Hexamethylene diamine synthesis reaction system

Examples

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Effect test

Embodiment 1

[0036] A kind of hexamethylenediamine synthetic reaction system, such as figure 1 As shown, it consists of a hexamethylenediamine loop reactor 1, a catalyst settling tank 2, and a catalyst circulation pipe 3.

[0037]The hexamethylenediamine loop reactor 1 consists of a reactor tower body 18, a draft tube 11, a bell mouth 12, a hydrogen distributor 13, adiponitrile distributor 14, a heat exchange coil 15, a material outlet 16, and a hydrogen outlet 17. .

[0038] The reactor 1 is in the shape of a tower with an aspect ratio of 5-50, preferably 10-30.

[0039] The guide tube 11 has a tower shape with an aspect ratio of 10-50, preferably 20-40, and its upper part is connected with the bell mouth 12 . One or more can be set. The reactor tower body 18 and part of the area are reaction area and heat transfer area, vapor-liquid separation area, liquid circulation area

[0040] The bell mouth 12 is connected with the guide tube 11, its lower part has the same diameter as the guid...

Embodiment 2

[0054] A kind of hexamethylenediamine synthetic reaction system, such as figure 1 Shown, comprise hexamethylenediamine loop reactor 1, catalyst settling tank 2, catalyst circulation pipe 3, wherein one end of catalyst circulation pipe 3 links to each other with the bottom of catalyst settling tank 2, and the other end links to each other with diamine loop reactor 1; The hexamethylenediamine loop reactor 1 comprises a draft tube 11, a bell mouth 12, a hydrogen distributor 13, an adiponitrile distributor 14, a heat exchange coil 15, a discharge port 16, a hydrogen outlet 17, and a reactor tower body 18 , wherein the guide tube 11 is vertically arranged inside the reactor tower body 18, and the upper end of the guide tube 11 is connected with a bell mouth 12, and the wide mouth of the bell mouth 12 faces upwards, and inside the reactor tower body 18 is also A hydrogen distributor 13 and an adiponitrile distributor 14 are respectively provided with, the hydrogen distributor 13 is ...

Embodiment 3

[0057] A kind of hexamethylenediamine synthetic reaction system, such as figure 1 Shown, comprise hexamethylenediamine loop reactor 1, catalyst settling tank 2, catalyst circulation pipe 3, wherein one end of catalyst circulation pipe 3 links to each other with the bottom of catalyst settling tank 2, and the other end links to each other with diamine loop reactor 1; The hexamethylenediamine loop reactor 1 comprises a draft tube 11, a bell mouth 12, a hydrogen distributor 13, an adiponitrile distributor 14, a heat exchange coil 15, a discharge port 16, a hydrogen outlet 17, and a reactor tower body 18 , wherein the guide tube 11 is vertically arranged inside the reactor tower body 18, and the upper end of the guide tube 11 is connected with a bell mouth 12, and the wide mouth of the bell mouth 12 faces upwards, and inside the reactor tower body 18 is also A hydrogen distributor 13 and an adiponitrile distributor 14 are respectively provided with, the hydrogen distributor 13 is ...

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Abstract

The invention provides a hexamethylene diamine synthesis reaction system. The system comprises a hexamethylene diamine loop reactor, a catalyst sedimentation tank and a catalyst circulation pipe. Thehexamethylene diamine loop reactor is internally provided with a flow guiding pipe, and the interior of the reactor can be divided a reaction area, a heat transfer area, a vapor-liquid separation areaand a liquid circulation area. In the catalyst sedimentation tank, reaction liquid from the hexamethylene diamine loop reactor enters a flow guiding device in the middle of the catalyst sedimentationtank and dispersed in the flow guiding device, entrained gas is released, a catalyst heavy phase and a hexamethylene diamine oil phase are separated, and the catalyst heavy phase is concentrated under the effect of a sedimentation block and used for recycling; a light phase obtains the hexamethylene diamine oil phase hardly containing catalysts. By adopting the catalyst circulation pipe and the function of cooling water in a jacket, the density of the liquid is increased, the normal decrease of the liquid in the circulation pipe is maintained, and the catalysts are recycled.

Description

technical field [0001] The invention relates to the technical field of chemical equipment, further relates to the gas, liquid and solid three-phase continuous reaction and production of hydrogenation of adiponitrile, in particular to a synthesis reaction system of hexamethylenediamine. Background technique [0002] Hexamethylenediamine is a strong organic base, which can react with electrophilic compounds such as H, haloalkane, hydroxyl and other compounds. As an important bifunctional compound, its molecule contains two reactive functional groups, which can generate a variety of important chemicals. [0003] Currently, there are three main technical routes for the production of hexamethylenediamine: [0004] Hexylene glycol method: 1,6-hexanediol is used for ammoniation dehydration reaction using skeleton nickel catalyst, reaction temperature is 200°C, pressure is 23MPa, and 1,6-hexanediol reacts with ammonia in the presence of skeleton nickel as catalyst This produces 1,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J8/00B01J8/22C07C211/12C07C209/48
CPCB01J8/0035B01J8/007B01J8/1809B01J8/1827B01J8/1836B01J8/1845B01J8/228B01J2208/00132C07C209/48C07C211/12
Inventor 郝树洪赵慧倪志虎
Owner 淄博恒亿化工科技有限公司
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