Improved polymerization reactor

Abstract

The invention belongs to the technical field of chemical equipment, relates to a polymerization reactor, particularly relates to a reactor consisting of a shell pass barrel and a shell pass heat exchange tube, and is especially applied to a polymerization reaction in PAVC production. The improved polymerization reactor comprises a shell pass barrel and a shell pass heat exchange tube structure; the improved polymerization reactor is characterized in that a heat-conducting oil exit of the shell pass barrel is provided with an annular runner along the circumference of the shell pass barrel; the shell pass barrel in the annular runner is provided with multiple small holes for heat-conducting oil flowing; three baffle support plates are arranged in the shell pass barrel along the direction of a heat exchange tube, the middle of the middle baffle support plate is provided with a large hole, and the uppermost and bottommost baffle support plates are provided with multiple small holes. According to the invention, heat-conducting oil uniformly enters a shell pass, so that the temperature of the shell pass is controlled, and the temperature increasing and reducing is uniform; a catalyst is maximumly used while the production efficiency is improved. Through the improvement of an equipment structure, the temperature difference of the heat-conducting oil exit is controlled well, so that the temperature change is controlled within 1%, the activity of the catalyst is increased by 10%, and the production capacity is increased by more than 30%.

Description

technical field [0001] The invention belongs to the technical field of chemical equipment, and relates to a polymerization reactor, in particular to a reactor composed of a shell-side cylinder body and a tube-side heat exchange tube, especially for polymerization reaction in PAVC production. Background technique [0002] In the traditional polymerization reactor, the heat transfer effect of the reactor is poor, and the content of impurity acetaldehyde in the reaction product increases, so that the reaction polymer increases, the heat transfer effect is worse, and the impurity is further increased, thus forming a vicious circle . [0003] In addition, the polymerization reaction is an exothermic reaction, and the heat released by the reaction is only used to preheat the circulating air, and most of the remaining heat is taken away by the heat transfer oil cooler and the mixed cooling system, which consumes a lot of cooling water and causes precious natural waste . Contents...

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Problems solved by technology

[0002] In the traditional polymerization reactor, the heat transfer effect of the reactor is poor, and the content of impurity acetaldehyde in the reaction product increases, so that the reaction polymer increases, the heat transfer effect is worse, and the impurity is further increased, thus forming a vicious circle

[0003] In addition, the polymerization reaction is an exothermic reaction, and the heat released by the reaction is only used to preheat the circulating air, and most of the remaining heat is taken away by the heat transfer oil cooler and the mixed cooling system, which consumes a lot of cooling water and causes precious natural waste

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