Continuous ursol dissolving device and method

A p-phenylenediamine and dissolving device technology, which is applied in the direction of dissolving, dissolving, and driving the agitator to dissolve, can solve the problems of unfavorable stability of PPTA resin, and achieve the effect of ensuring color consistency, ensuring stability, and achieving stability

Inactive Publication Date: 2016-06-22
AFCHINA CORP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, dissolving PPD intermittently is not good for maintaining the stability of PPTA resin produced continuously and stably in large quantities.

Method used

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  • Continuous ursol dissolving device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A continuous dissolving device for p-phenylenediamine, which comprises a weighing system, a dissolving system, a cooling system and a storage system;

[0021] Described weighing system comprises feed bin 1;

[0022] The dissolving system comprises a continuous dissolving tank 2, the continuous dissolving tank 2 is provided with a feed inlet 3, a gas inlet 4, a discharge port 5 and a gas outlet 6; the continuous dissolving tank 2 is provided with a stirring device and a grid 7; The stirring device includes a motor 8, a stirring shaft 9 and a stirring paddle 10; the grid 7 is a porous disk fixed on the wall of the kettle; the stirring shaft 9 passes through the center of the grid 7 and is kept with the grid 7 1mm gap;

[0023] The feed bin 1 is connected with the feed port 3 through a pipeline;

[0024] The discharge port 5 is sequentially connected with the cooling system 11 and the storage system 12 through pipelines.

[0025] The aspect ratio of the continuous disso...

Embodiment 2

[0031] A continuous dissolving device for p-phenylenediamine, which comprises a weighing system, a dissolving system, a cooling system and a storage system;

[0032] Described weighing system comprises feed bin 1;

[0033] The dissolving system comprises a continuous dissolving tank 2, the continuous dissolving tank 2 is provided with a feed inlet 3, a gas inlet 4, a discharge port 5 and a gas outlet 6; the continuous dissolving tank 2 is provided with a stirring device and a grid 7; The stirring device includes a motor 8, a stirring shaft 9 and a stirring paddle 10; the grid 7 is a porous disk fixed on the wall of the kettle; the stirring shaft 9 passes through the center of the grid 7 and is kept with the grid 7 10mm gap;

[0034] The feed bin 1 is connected with the feed port 3 through a pipeline;

[0035] The discharge port 5 is sequentially connected with the cooling system 11 and the storage system 12 through pipelines.

[0036] The aspect ratio of the continuous diss...

Embodiment 3

[0042] A continuous dissolving device for p-phenylenediamine, which comprises a weighing system, a dissolving system, a cooling system and a storage system;

[0043] Described weighing system comprises feed bin 1;

[0044]The dissolving system comprises a continuous dissolving tank 2, the continuous dissolving tank 2 is provided with a feed inlet 3, a gas inlet 4, a discharge port 5 and a gas outlet 6; the continuous dissolving tank 2 is provided with a stirring device and a grid 7; The stirring device includes a motor 8, a stirring shaft 9 and a stirring paddle 10; the grid 7 is a porous disk fixed on the wall of the kettle; the stirring shaft 9 passes through the center of the grid 7 and is kept with the grid 7 5mm gap;

[0045] The feed bin 1 is connected with the feed port 3 through a pipeline;

[0046] The discharge port 5 is sequentially connected with the cooling system 11 and the storage system 12 through pipelines.

[0047] The aspect ratio of the continuous dissol...

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Abstract

The invention belongs to the technical field of synthesis of high polymer and relates to a continuous ursol dissolving device and method, in particular to a continuous dissolving device and method for monomer ursol during continuous polymerization of resin for para-aramid fibers, that is, conventional intermittent dissolving is substituted by PPD continuous dissolving. Therefore, all processes of PPTA polymerization are continuous, and stability in resin molecular weight is ensured, and consistency in resin luster is achieved.

Description

technical field [0001] The invention belongs to the technical field of polymer synthesis, and relates to a continuous dissolving device and method for p-phenylenediamine, in particular to a continuous dissolving device and method for monomer p-phenylenediamine in the continuous polymerization process of resin for para-aramid fiber . Background technique [0002] Para-aramid fiber is a high-performance fiber with many excellent properties such as high strength, high modulus, high temperature resistance and solvent resistance, and has important applications in national defense and civilian fields. Among them, the continuous and stable production of polyparaphenylene terephthalamide (PPTA) resin for para-aramid fibers is one of the keys. The commonly used PPTA polymerization method in industry is low temperature solution polycondensation method. That is, low-temperature polymerization reaction of monomer terephthaloyl dichloride (TPC) and p-phenylenediamine (PPD) in a suitabl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F7/04B01F7/18B01F15/04B01F15/06B01F1/00
CPCB01F21/10B01F27/625B01F27/70B01F27/87B01F27/90B01F35/881B01F35/92B01F35/90
Inventor 庹新林崔庆海
Owner AFCHINA CORP CO LTD
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