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-formin

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

Example Embodiment

[0137] Example 1

[0138] This example is adopted figure 1 The kettle reactor shown is hydrogenated.

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

[0140] (1) Cylinder:

[0141] The vessel reactor has a capacitor of 50 L, an inner diameter of 350 mm, and the length diameter ratio of the straight section is 1.5: 1, that is, the height of the straight section is 525 mm;

[0142] (2) agitator:

[0143] Gas distributor: in the bottom of the hollow stirring axis figure 2 The annular gas distributor shown in the circular gas distributor is 1 / 12 of the inner wall of the kettle reactor inside the inner wall of the kettle reactor, the ring diameter of the ring gas distributor is a kettle reactor. 3 / 5 of the inner diameter, the number of openings is 16, and the opening aperture is 2mm;

[0144]Stirring paddle: The number of stirring paddle is 2, from the ring-shaped gas distributor, and the distance from the ring gas distributor is installed at 1 / 6 position of t...

Example Embodiment

[0151] Example 2

[0152] Different from the examples of Example 1, the species of the stirring paddle are different from those of Example 1, specific:

[0153] The six-half tube disc turbo paddle using the same padded diameter instead of the six-slope disc turboxers in Example 1, and the position is constant.

[0154] The rest were the same as in Example 1, and sampled from the start of 6 hours, 8 hours, 10 hours, and 12 hours, respectively, and the hydrogenation of unsaturated polymers was detected, and the specific results are listed in Table 1.

Example Embodiment

[0155] Example 3

[0156] Different from the examples of Example 1, the position of the gas distributor is different from those of Example 1, specific:

[0157] The vacuum stirring shaft is moved so that the gas distributor is 1 / 6 of the inner wall of the inner wall of the kettle reactor kettle.

[0158] The rest were the same as in Example 1, and sampled from the start of 6 hours, 8 hours, 10 hours, and 12 hours, respectively, and the hydrogenation of unsaturated polymers was detected, and 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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