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Production process of brominated butyl rubber

A technology of bromobutyl rubber and production process, applied in the rubber field, can solve problems such as affecting production efficiency, easy hanging on walls, forced shutdown, etc., so as to improve hexane recovery efficiency, improve operation cycle, and reduce hexane unit consumption Effect

Active Publication Date: 2020-09-29
山东京博中聚新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to actual engineering experience, when the hexane removal effect is poor during the process, the residual hexane content in the glue will be high, causing the glue to be sticky, easy to hang on the wall, and easy to block the pump, resulting in a decrease in volume or forced shutdown , seriously affecting the overall production efficiency

Method used

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  • Production process of brominated butyl rubber
  • Production process of brominated butyl rubber
  • Production process of brominated butyl rubber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0111] On the basis of comparative example 1, before flashing, increase the temperature of glue liquid heating system, before bromination, increase nitrogen pressurization system, and flash tank structure is improved (using Figure 5 The shown flash tank, wherein, the angle α of the spray port is 60°, and the baffle is a triangular baffle), specifically according to figure 2 and image 3 The shown bromination-neutralization process and solvent recovery process are carried out, and the others are the same as in Comparative Example 1. details as follows:

[0112] S1. Preparation of sol: IIR basic colloidal water is obtained by cationic polymerization of isobutylene and isoprene, which is transported to the halogenated feed storage tank through the colloidal water pump, squeezed and dehydrated by vibrating screen and screw machine, and then passed through cold and hot hexane The glue concentration was prepared to obtain a sol with a set concentration (concentration is 20wt%). ...

Embodiment 2～3

[0120] The operation is carried out according to Example 1, the difference is that the hot water flow rate and steam flow rate of the steam-water mixer are different, resulting in different hot water temperature and glue temperature after mixing. The specific conditions are shown in Table 1.

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Abstract

The invention provides a production process of brominated butyl rubber. According to the invention, a solvent recovery system in a brominated butyl rubber production process is improved; a steam-watermixer and a glue static mixer are arranged in front of the flash tank; the process includes introducing hot water and steam into a steam-water mixer; introducing the steam-water mixture and the gluesolution into a glue static mixer; heating glue solution, then, and enabling the mixture to enter a flash tank for flash evaporation and subsequent processes, thus increasing the temperature of the materials entering the flash tank; supplying part of gasification heat to colloidal particles and a solvent in advance; forming a dispersion phase of glue liquid drops and water in the conveying pipeline; after entering a flash tank, performing rapid gasification and flash evaporation, forming the pore channels in the surfaces of the colloidal particles, and reducing the sizes of the colloidal particles furtherly under the stirring action in the flash tank, so that the flash solvent removal effect is improved, and the phenomenon that a glue solution adheres to the wall is also reduced, thereby improving the solvent recovery efficiency, reducing the unit consumption of the whole solvent, reducing the risks of pump blockage and shutdown and ensuring the production and operation period of brominated butyl rubber.

Description

technical field [0001] The invention relates to the field of rubber, in particular to a production process of brominated butyl rubber. Background technique [0002] Butyl rubber (IIR) is polymerized from isobutylene and a small amount of isoprene, has chemical and thermal stability, and has outstanding air and water tightness. Bromobutyl rubber (BIIR) is a product obtained after bromination modification of butyl rubber (IIR). Bromine atoms are introduced into IIR molecules, but the main chain structure of IIR is not changed, so BIIR has all the characteristics of IIR. For BIIR, due to the introduction of bromine atoms, not only the double bond is activated; but also a new cross-linking position is generated, which greatly speeds up the vulcanization speed, and the vulcanization method can be diversified; and it increases its own viscosity, strengthens and other Compatibility of rubber; in order to improve the mechanical and technological properties of rubber, white carbon ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F210/12C08F8/22B01F13/10B01D3/06B01D3/38
CPCC08F8/22B01D3/06B01D3/38B01F33/82C08F210/12
Inventor 许晓双王德恩葛良国滕杰王海矫栾波任学斌王衍金
Owner 山东京博中聚新材料有限公司
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