Granulation method and granulation system of 1,3-bis(citraconimidemethyl)benzene

A technology of citraconimide methylation and granulation, applied in the direction of granulating raw materials, chemical instruments and methods, organic chemistry, etc., can solve the problems of short granulation time, long extrusion granulation time, and poor appearance It can reduce the workload, speed up the granulation speed, and achieve the effect of good market prospect.

Active Publication Date: 2017-05-10
SHANDONG YANGGU HUATAI CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a 1,3 - The granulation method of bis(citraconimidemethyl)benzene, the granulation time of this method is short, continuous production can be realized, the color of the obtained granules is uniform, and it is not easy to be grainy, and has good practicability

Method used

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  • Granulation method and granulation system of 1,3-bis(citraconimidemethyl)benzene
  • Granulation method and granulation system of 1,3-bis(citraconimidemethyl)benzene

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] use figure 1The continuous granulation system shown is for continuous granulation of 1,3-bis(citraconimidemethyl)benzene. The continuous granulation system includes kettle 1 and kettle 2, and the bottom of kettle 1 and kettle 2 are equipped with outlet Material valve, the bottom of kettle 1 is connected with the upper part of kettle 2 through the feeding pipe, and pump 1 is installed on the feeding pipe, and pump 1 sends the material from kettle 1 to kettle 2; the bottom of kettle 2 is connected with the upper part of kettle 1 through the return pipe The return pipe is provided with a return valve and a granulation valve. The granulation valve is connected with the granulator so that the material flowing out of the kettle 2 enters the granulator for granulation. The return valve controls the flow of the material back into the kettle 1. There is also a pump 2 on the return pipe, and the pump 2 sends the material flowing out of the kettle 2 back to the kettle 1 through th...

Embodiment 2

[0049] Using the same continuous granulation system as in Example 1, 1,3-bis(citraconimidemethyl)benzene is continuously granulated, and the continuous granulation method is as follows:

[0050] (1) The powdery material of 1,3-bis(citraconimidemethyl)benzene is sent to Kettle 1 by a continuous conveying device, and Kettle 1 is heated to a temperature of 80°C and kept at a constant temperature for 1 hour.

[0051] (2) Open the discharge valve at the bottom of kettle 1, pump the material to kettle 2 through pump 1, close the granulation valve, fully open the return valve, and return the material in kettle 2 to kettle 1 through the return pipe through pump 2;

[0052] (3) According to the step (2), the materials are continuously circulated in the kettle 1 and the kettle 2. The kettle 2 adopts a water bath. Continue to circulate between kettle 1 and kettle 2 to keep kettle 2 at 43°C, and at the same time, close the return valve so that the materials flowing into kettle 2 can stay ...

Embodiment 3

[0056] Using the same continuous granulation system as in Example 1, 1,3-bis(citraconimidemethyl)benzene is continuously granulated, and the continuous granulation method is as follows:

[0057] (1) The powdery material of 1,3-bis(citraconimidemethyl)benzene is sent to Kettle 1 by a continuous conveying device, and Kettle 1 is heated to a temperature of 80°C and kept at a constant temperature for 1 hour.

[0058] (2) Open the discharge valve at the bottom of kettle 1, pump the material to kettle 2 through pump 1, close the granulation valve, fully open the return valve, and return the material in kettle 2 to kettle 1 through the return pipe through pump 2;

[0059] (3) According to the step (2), the materials are continuously circulated in the kettle 1 and the kettle 2. The kettle 2 adopts a water bath. Part of the material continues to circulate between the kettle 1 and the kettle 2 to keep the kettle 2 at 45°C. At the same time, the return valve is closed so that the materia...

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Abstract

The invention discloses a granulation method for 1, 3-bis(citraconoyl formimino) benzene. The method comprises the following steps: heating the 1, 3-bis(citraconoyl formimino) benzene to be completely molten into a liquid state; then carrying out heat preservation on the liquid-state 1, 3-bis(citraconoyl formimino) benzene for 1-2 hours at 43-45 DEG C, so that the liquid-state 1, 3-bis(citraconoyl formimino) benzene is converted into glassy-state 1, 3-bis(citraconoyl formimino) benzene; adding the glassy-state 1, 3-bis(citraconoyl formimino) benzene into a granulator, and carrying out granulation. The invention also discloses a granulation system. Continuous granulation can be realized by the granulation system. According to the granulation method and the granulation system, the defects that an existing granulation method is long in extrusion and granulation time and incapable of realizing continuous production are overcome; the 1, 3-bis(citraconoyl formimino) benzene is converted into a glassy state and is then granulated, so that the operation environment is greatly improved, and the production efficiency is improved; the granulation method and the granulation system have a favorable market prospect.

Description

technical field [0001] The invention relates to a granulation method of an anti-reversion agent 1,3-bis(citraconimide methyl)benzene, and also relates to an anti-reversion agent 1,3-bis(citraconimide methyl) ) The continuous granulation method of benzene belongs to the technical field of anti-reversion agent. Background technique [0002] 1,3-bis(citraconimidemethyl)benzene, also known as 1,3-bis(citraconimidemethyl)benzene, PK900, was put into the market by Akzo-Nobel in the Netherlands in 1995. The world's first product sold under the name of anti-reversion agent, its chemical structure is as follows. 1,3-bis(citraconimidemethyl)benzene will change from solid state to liquid state with good fluidity directly when it melts at high temperature. If the temperature is raised slowly, it will change from solid state to glass state first, and then from glass state to state becomes liquid again, and vice versa. [0003] [0004] At present, the granulation process of this pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J2/00C07D207/448
Inventor 潘琳琳马松杜孟成吕寻伟孙庆刚
Owner SHANDONG YANGGU HUATAI CHEM
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