Hydrogenation reaction device and method for continuously hydrogenating conjugated diene polymers using the device

Abstract

The invention provides a hydrogenation device and a method for applying the device to prepare continuous hydrogenation conjugated diolefine polymer. The hydrogenation device is used for leading a conjugated diolefine polymer, a hydrogenation catalyst and hydrogen to carry out hydrogenation. The hydrogenation device comprises at least a hydrogenation unit; each hydrogenation unit comprises at leasta hydrogenation reactor with a discharge hole and at least a heat exchanger. The hydrogenation unit leads the conjugated diolefine polymer, the hydrogenation catalyst and the hydrogen to mix in the form of non-mechanical mixing and carry out hydrogenation; the heat exchanger is connected with the discharge hole of at least a hydrogenation reactor.

Description

technical field [0001] The invention relates to a hydrogenation reaction device and a hydrogenation method using the device, in particular to a hydrogenation reaction device and method for continuous hydrogenation of conjugated diene polymers. Background technique [0002] Industrially, the use of conjugated diene monomers such as butadiene and isoprene for polymerization or copolymerization to prepare synthetic rubber has been widely used for commercial production, but due to the unsaturated bis The bond is easily oxidized, which in turn leads to the disadvantage of insufficient thermal stability and weathering stability of the polymer under high temperature or weathering test. [0003] In order to improve the shortcoming that the conjugated diene polymer containing unsaturated double bonds is easily oxidized, resulting in insufficient thermal stability and weather resistance stability, the conjugated diene polymer can be hydrogenated to reduce the number of conjugated dien...

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Problems solved by technology

[0006] However, the hydrogenation reaction of olefinic double bonds using the above-mentioned hydrogenation catalyst, since the hydrogenation reaction of conjugated diene polymer is an exothermic reaction, after the reaction lasts for a period of time, the reaction environment will be caused by the acceleration of hydrogenation rate and the increase of heat release. The temperature rises rapidly, so that the hydrogenation catalyst in it cannot continue to operate normally due to high temperature deactivation, shortening the time that the hydrogenation catalyst can act, thereby reducing the hydrogenation rate of the final conjugated diene polymer

It can be seen that although the above-mentioned hydrogenation catalyst can accelerate the hydrogenation rate of the conjugated diene polymer, it will also cause the hydrogenation catalyst to fail early due to high temperature. Hydrogenation reaction device and method capable of increasing hydrogenation rate without affecting hydrogenation catalyst life

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