Tubular plug flow reactor with material internal circulation and preparation method for preparing continuous bulk ABS (Acrylonitrile-Butadiene-Styrene) resin

Abstract

The invention relates to a tubular plug flow reactor with material internal circulation and a preparation method for preparing continuous bulk ABS (Acrylonitrile-Butadiene-Styrene) resin, which are mainly used for solving the prominent problems that a multistage reactor in the current normal bulk ABS production process has large reactive state difference, and the reactor system has poor stability. A continuous bulk polymerization method is adopted, and the multistage reactor is connected in parallel or in series to synthesize the high-performance ABS resin. The production process comprises four parts: a sol system, a reaction system, a vacuum pumping system and an extrusion granulating system, wherein the reaction system comprises four plug flow reactors, the reactors R1, R2 and R3 are in series arranged in the reactor system, and the fourth reactor R4 is in parallel connected between the inlet of the reactor R1 and the outlet of the reactor R2; and the reaction material is distributed from the R2 outlet, one part of the reaction material enters the reactor R4 and then reflows to the inlet of the reactor R1 for completing the circulation, the other part of the reaction material passes through the reactor R3 to complete the polymerization, and an ABS resin product with stable performance is obtained by vacuum de-volatilization and extrusion granulating. The reactor system with the series-parallel structure solves the problems that a conventional series plug flow bulk ABS polymerization device has large process volatility and poor system stability, and can produce the ABS resin product with the stable production performance.

Description

technical field [0001] The invention belongs to the field of polymer material synthesis and preparation, relates to the field of synthetic resins, in particular to a plug flow reactor system based on series-parallel structure arrangement and a method for preparing high-performance ABS resin. Background technique [0002] ABS resin has the characteristics of heat resistance, high surface hardness, stable size, chemical resistance and good electrical properties. It is easy to form and has excellent machining performance. It is widely used in the fields of electronic appliances, instruments and meters, automobiles, building materials industry and daily products. Applications. ABS applications in my country are highly concentrated in refrigerators, televisions, telephones, office supplies and other electronic and electrical accessories, accounting for 80% of consumption, and toys and auto parts each accounting for 10%. In recent years, the rapid development of automobiles, elec...

AI Technical Summary

Problems solved by technology

[0007] The present invention adopts multi-stage plug-flow tube reactors, which are arranged in series and parallel to realize the internal circulation of some materials in the polymerization system, and solve the problem of the current multi-stage series-connected plug-flow tube reactors, which have high requirements for mass transfer and heat transfer. To solve the problem of poor stability of the reaction system, provide an ABS polymerization process with a multi-stage plug-flow tubular reactor with internal circulation, improve and improve the stability of the reaction system and the performance of ABS resin products

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