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A kind of production method and device of nylon 66 saline solution

A technology of brine solution and production equipment, applied in chemical instruments and methods, preparation of organic compounds, organic chemistry, etc., can solve problems such as disadvantages that cannot be ignored, achieve convenient polycondensation reaction, improve storage stability, and simplify production process Effect

Active Publication Date: 2020-02-07
HENAN SHENMA NYLON CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The nylon 66 salt product obtained by the above production process is dry nylon 66 salt, which has the advantage of convenient transportation, but its disadvantages cannot be ignored

Method used

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  • A kind of production method and device of nylon 66 saline solution
  • A kind of production method and device of nylon 66 saline solution
  • A kind of production method and device of nylon 66 saline solution

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Such as figure 1 Shown, a kind of production system of nylon 66 brine solution comprises a refining reaction unit and aging tank 13, and described refining reaction unit comprises refining reactor 6, and the bottom of described refining reactor 6 is provided with second discharge pipeline 7 And through the second discharge pipe 7, it is connected with the aging tank 13, the tops of the refining reactor 6 and the aging tank 13 are connected to the nitrogen blanketing device 11, and the upper part of the refining reactor 6 is respectively provided with a second upper-level material inlet. material pipeline 14, the second hexamethylenediamine feed pipeline 8 and the second water inlet pipeline 9; the refining reactor 6 is provided with a second circulation pipeline 7003, and the second circulation pipeline 7003 communicates with the second outlet in a branched manner. On the feed pipeline 7, the second circulation pipeline 7003 connects the bottom and the top of the refini...

Embodiment 2

[0038] Such as figure 2 As shown, the difference between embodiment two and embodiment one is: on the basis of embodiment one, embodiment two is provided with two crude reaction units after the refining reaction unit, and the two crude reaction units are connected in parallel and each The first discharge pipeline 5 of the crude reactor 1 is all connected to the second upper material feed pipeline 14 of the refining reactor 6 of the refining reaction unit; the top of the crude reactor 1, the refining reactor 6 and the aging tank 13 Both are connected to the nitrogen blanketing device 11;

[0039] The structural description of the crude reaction unit is as follows:

[0040] Described crude reaction unit comprises crude reactor 1, and the bottom of described crude reactor 1 is provided with the first discharge pipe 5, and the top of crude reactor 1 is respectively provided with the first superior material feed pipe 2, The first hexamethylenediamine feed pipeline 3 and the firs...

Embodiment 3

[0046] Such as image 3 As shown, the difference between Embodiment 3 and Embodiment 2 lies in the following points: (1) only one crude reaction unit is provided; (2) an intermediate storage tank 15 is provided between the crude reaction unit and the refined reaction unit, The discharge pipeline 5 of the crude reactor 1 is connected to the intermediate storage tank 15, and the bottom of the intermediate storage tank 15 is provided with a feed pipeline 16, and the feed pipeline 16 is connected to the second upper material feed pipeline of the refining reactor 6 14, and the delivery pipeline 16 is provided with 3# pump 1600, 5# shut-off valve 1601, 1# filter 10 and 2# filter 12 from back to front, and the aperture of the 1# filter 10 is greater than 2# The pore size of the filter 12, the pore size of the 1# filter 10 is preferably 75-250 μm, and the pore size of the 2# filter 12 is preferably 1-20 μm; (3) There is no filter on the discharge pipe 7 of the refining reaction unit r...

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Abstract

The invention provides a production system for a nylon 66 salt water solution. The system comprises a plurality of reaction units, control systems corresponding to the reaction units and a maturation tank. The reaction units comprises reactors, each reactor is provided with a material discharging pipeline and a plurality of material feeding pipelines, the material discharging pipeline of the reactor of the headmost reaction unit is communicated with the maturation tank, a circulating pipeline is arranged outside each reactor and used for making the bottom and the top of the reactor communicated, and each circulating pipeline is sequentially provided with a heat exchanger and a pump from front to back. The production system is suitable for the production requirements of nylon 66 salt with water as a solvent, flexible control over temperature, pH, concentration and other industrial parameters in the production process can be achieved, meanwhile, no by-products are generated, the water also becomes one part of the nylon 66 salt product, the storage stability of the nylon 66 salt is improved, and convenience is brought to the subsequent polycondensation reaction.

Description

technical field [0001] The invention belongs to the technical field of nylon 66 salt preparation, and in particular relates to a production system of nylon 66 salt solution and a method for producing nylon 66 salt using the production system. Background technique [0002] Nylon 66 resin includes nylon 66 synthetic fibers and nylon 66 engineering plastics. Nylon 66 synthetic fibers include various civilian silks, high-strength ropes, tire cords, etc. Nylon 66 engineering plastics are widely used in injection molding of various machinery, automobiles, chemicals and electrical devices. High-strength components such as gears, pulleys, bearings, pump bodies, impellers, valve seats, joysticks, sealing rings, gaskets, bushings, handles, housings, and support frames. In addition, nylon 66 can also be used to make various medical equipment, sporting goods, etc. [0003] Nylon 66 salt is the monomer of nylon 66 resin. In order to ensure that adipic acid and hexamethylenediamine react...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C231/02C07C233/36C07C231/24
CPCC07C231/02C07C231/24C07C233/36
Inventor 乔思怀赵铎陈聚良李本斌潘强刘镇江李渊博金保国孙浩杰赵瑞郭卫东欧玲吕国辉余峰董晓凯华东旭高扬杨萌徐志锋
Owner HENAN SHENMA NYLON CHEM
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