Polymer reactor for synthesizing rubber

Abstract

The invention discloses a polymer reactor for synthesizing rubber, which mainly comprises a reactor, wherein a plurality of groups of condensing or heating pipe bundles are uniformly arranged around the inside of the reactor, a plurality of feeding holes are uniformly distributed in the radial direction and the height direction of a reaction cylinder body, the bottom of the reactor is provided with a helical propeller, the helical propeller is connected with a first motor at the outer end of the reactor, the feeding holes are provided with catalyst feeding pipes and blade type stirrers, and connecting shafts of the blade stirrers are connected with a second motor at the outer end of the reactor. The helical propeller and the catalyst feeding pipes are covered with fluorine coatings using polytetrafluoroethylene matrix resin on partial surface in the reactor, the inner circumferential surface of the reactor, the inner circumferential surface of a discharging pipeline and the outer circumferential surfaces of the condensing or heating pipe bundles. An axial flow wiper heat radiating stirring blade of a length penetrating an agitated reactor in the original polymerization agitated reactor is replaced with a short helical propeller to ensure that the stirring power reaching up to 315kw is reduced to about 100-175kw / h, thus the electric energy is saved by above 40 percent.

Description

technical field [0001] The invention relates to a polymerization reactor for synthetic rubber, in particular to a polymerization reactor for synthesizing butyl rubber and ethylene-propylene rubber. Background technique [0002] The polymerization temperature of butyl rubber has a great influence on the copolymerization reaction of isobutylene and isoprene. High temperature will reduce the relative molecular weight of the polymer and reduce the physical and mechanical properties of the resulting rubber. Therefore, in order to obtain polymers with high commercial value, the polymerization temperature must be controlled below -100°C. The characteristic of the butyl rubber production process of the existing slurry method is that the polymerization reactor is a tank reactor. There are multiple groups of condenser tube bundles arranged around the reactor, and the bottom of the reactor center is equipped with an axial-flow scraper heat dissipation stirring paddle, which plays ...

AI Technical Summary

Problems solved by technology

There are multiple groups of condenser tube bundles arranged around the reactor, and the bottom of the reactor center is equipped with an axial-flow scraper heat dissipation stirring blade, which plays the role of mixing, stirring and heat dissipation. The length of the stirring shaft is straight from the bottom of the reactor center. At the top of the reaction kettle, the stirring power is as high as 315kw or more; and because the generated slurry moves upward in an irregular turbulent flow, the colloidal particles stick to the condensation tube bundle and block the slurry output pipe

Under normal operating conditions, work must be stopped every 2 months for glue removal and cleaning, which affects production

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