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Tank reactor and method for unsaturated polymer hydrogenation and nitrile rubber hydrogenation method

A tank reactor, unsaturated technology, applied in the field of hydrogenation of nitrile rubber, can solve the problems of poor continuity, rise, uneven film forming effect, etc., and achieve the effect of improving hydrogenation efficiency

Pending Publication Date: 2021-11-26
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the unsaturated polymer solution has a certain viscosity, and the viscosity of the system shows an obvious upward trend with the increase of the degree of hydrogenation, so the film-forming effect under the action of centrifugal force is not uniform, and the continuity is not good, so the reaction The device has not been widely used in the unsaturated polymer hydrogenation industry

Method used

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  • Tank reactor and method for unsaturated polymer hydrogenation and nitrile rubber hydrogenation method
  • Tank reactor and method for unsaturated polymer hydrogenation and nitrile rubber hydrogenation method
  • Tank reactor and method for unsaturated polymer hydrogenation and nitrile rubber hydrogenation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0138] This example uses figure 1 The tank reactor shown carries out the hydrogenation reaction.

[0139] The structural parameters of the tank reactor are as follows:

[0140] (1) Cylinder:

[0141] The volume of the tank reactor is 50L, the inner diameter is 350mm, and the aspect ratio of the straight section is 1.5:1, that is, the height of the straight section is 525mm;

[0142] (2) Stirrer:

[0143] Gas distributor: at the bottom of the hollow stirring shaft, such as figure 2 The annular gas distributor shown in , the height of the annular gas distributor from the bottom inner wall of the tank reactor is 1 / 12 of the inner diameter of the tank reactor, and the ring diameter of the annular gas distributor is 1 / 12 of the inner diameter of the tank reactor 3 / 5 of the inner diameter, the number of holes is 16, and the hole diameter is 2mm;

[0144]Stirring paddles: The number of stirring paddles is 2, from the annular gas distributor upwards, the distance from the annu...

Embodiment 2

[0152] In a manner similar to Example 1, the difference is: the type of the stirring paddle is different from Example 1, specifically:

[0153] The six-half tube-blade disc turbine propeller with the same propeller diameter is used to replace the six-pitched-blade disc turbine propeller in Embodiment 1, and the position remains unchanged.

[0154] The rest are all the same as in Example 1, and samples were taken at 6 hours, 8 hours, 10 hours, and 12 hours since the reaction began to detect the degree of hydrogenation of the unsaturated polymer. The specific results are listed in Table 1.

Embodiment 3

[0156] In a manner similar to that of Example 1, the difference is that the position of the gas distributor is different from that of Example 1, specifically:

[0157] Move the hollow stirring shaft upwards so that the height of the gas distributor from the bottom inner wall of the tank reactor is 1 / 6 of the inner diameter of the tank reactor.

[0158] The rest are all the same as in Example 1, and samples were taken at 6 hours, 8 hours, 10 hours, and 12 hours since the reaction began to detect the degree of hydrogenation of the unsaturated polymer. The specific results are listed in Table 1.

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Abstract

The present invention relates to the field of unsaturated polymer hydrogenation, and discloses a tank reactor and a method for unsaturated polymer hydrogenation, and a nitrile rubber hydrogenation method. The tank reactor comprises a cylinder and a stirrer; the upper part of the cylinder is provided with at least one material inlet, a gas feeding hole I and a material discharging hole are formed in the lower part of the cylinder; the stirrer is arranged in the cylinder; the stirrer comprises a hollow stirring shaft, a stirring paddle and a gas distributor with open holes; the upper part of the hollow stirring shaft is provided with a gas feeding hole II capable of enabling gas to enter the hollow stirring shaft; the gas distributor is arranged around the hollow stirring shaft and is communicated with the internal space of the hollow stirring shaft; and at least one gas distributor is arranged at the lower part of the hollow stirring shaft. According to the method provided by the invention, the hydrogenation efficiency of unsaturated polymer can be remarkably improved.

Description

technical field [0001] The invention relates to the technical field of hydrogenation of unsaturated polymers, in particular to a tank reactor for hydrogenation of unsaturated polymers, a method for hydrogenation of unsaturated polymers and a hydrogenation of nitrile rubber Methods. Background technique [0002] For unsaturated polymers containing diene segments such as butadiene and isoprene, such as butadiene-styrene polymers, isoprene-styrene polymers, butadiene polymers, isoprene Polyethylene polymers and butadiene-acrylonitrile polymers, etc., because the polydiene segment contains unsaturated double bonds, the chemical properties are relatively active, and its thermal and oxygen stability and aging resistance are poor, so it is often used to add The method of hydrogen saturates the unsaturated double bonds of such polymers, thereby greatly increasing their environmental stability and giving them good thermal stability. [0003] The hydrogenation reaction of this type ...

Claims

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Application Information

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IPC IPC(8): B01J8/10B01J19/18C08C19/02C08F8/04C08F236/10
CPCB01J8/10B01J19/0053B01J19/18C08C19/02C08F8/04C08F236/10
Inventor 张国娟徐林邵明波王晨静赵英
Owner CHINA PETROLEUM & CHEM CORP
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