Pressure type ACR (acrylate copolymer resin) emulsion polymerization reaction kettle

Abstract

The invention relates to a pressure type ACR (acrylate copolymer resin) emulsion polymerization reaction kettle, belonging to the technical field of chemical equipment. The reaction kettle comprises an upper seal head, a reaction kettle body, a feeding hole and a discharge hole, wherein a motor is arranged on the top of the upper seal head, and the motor drives a stirring shaft of a stirring device to rotate; the stirring device stretches into the reaction kettle body, and a three-leaf sweepback stirring blade is arranged at each of the end and middle of the stirring shaft; a coil is arranged in the reaction kettle body, the coil is arranged in a U shape on the inner wall of the reaction kettle body, and the inlet and outlet of the coil are respectively sealed at the joint of the reaction kettle body and the upper seal head through elliptical seal heads; and a safety valve is arranged at the upper part of the upper seal head, and a rupture disc is arranged at the inlet of the safety valve. The reaction kettle is simple in structure, good in stability and high in safety, and has good characteristics of mixing, heat transfer and mass transfer.

Description

technical field [0001] The invention relates to a pressure-type ACR emulsion polymerization reactor, which belongs to the technical field of chemical equipment. Background technique [0002] Acrylate copolymer resin (ACR) is a PVC impact modifier with excellent comprehensive performance, and the core equipment for its production is the emulsion polymerization reactor. At present, the production process of ACR products at home and abroad is mainly a normal pressure ceramic reactor, which performs reaction polymerization under normal pressure, but because it is an ordinary open ceramic reactor, it is not a sealed pressure type, and there are certain shortcomings. During the polymerization reaction, the exothermic reaction is strong, and the contradiction between the reaction exotherm and heat dissipation adjustment is very prominent. If good control cannot be imposed, it is easy to cause violent polymerization or reaction termination. Reactors have high requirements for tempe...

AI Technical Summary

Problems solved by technology

At present, the production process of ACR products at home and abroad is mainly an ordinary pressure-type ceramic reactor, which performs reaction polymerization under normal pressure, but because it is an ordinary open-type ceramic reactor, it is not a sealed pressure type, and there are certain shortcomings.

The exothermic reaction is strong during the polymerization reaction, and the contradiction between the reaction exotherm and heat dissipation adjustment is very prominent. If good control cannot be applied, it is easy to cause violent polymerization or reaction termination

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