Macromolecular material polymerization reaction kettle

Abstract

The invention discloses a macromolecular material polymerization reaction kettle. The kettle comprises a kettle body, an upper closed cover, a drive sealing device, a stirring device, a feed and discharge port, wherein the upper part of the kettle body is an inverted cone-shaped wide mouth; the middle part of the kettle body is of a bucket shape; the lower part of the kettle body is cone; the kettle body is provided with a heating jacket 14 with a spiral flow channel and a heat insulation layer 9; the upper closed cover 6 is provided with a heating jacket 7, a heat insulation layer 9, a vacuum port 8 and a feed port 12; the stirring device consists of a stirring shaft 5, an inner strip-shaped spiral stirring paddle 3, an outer strip-shaped spiral stirring paddle 2, a scraping blade 16 and a supporting oar 18; the drive sealing device consists of a motor, a retarder and a sealing machine; and the upper part of the stirring shaft is connected with the drive sealing device. The macromolecular material polymerization reaction kettle has good stirring effect and high heat and mass transferring efficiency, can solve the difficult problems of pole climbing and devolatilization of high-viscosity fusant and is in particular suitable for the polymerization reaction of a high-viscosity macromolecular material.

Description

technical field [0001] The invention relates to tank-type reaction equipment, in particular to a polymer material polymerization reactor. Background technique [0002] At present, the polymerization reactor mostly adopts the agitator of paddle type, anchor type or a combination of the two. The Chinese invention "butadiene rubber polymerization reaction kettle" (application number: 200520022805.2) proposes a butadiene rubber polymerization reaction kettle, which includes a kettle body, and a stirring device is provided on the top of the kettle body. The stirring shaft in the middle, the stirring shaft located in the kettle body is provided with a plurality of stirring paddles from top to bottom, the outer surface of each stirring paddle matches the inner wall of the kettle body, and the adjacent stirring paddles are staggered with each other Arrangement, the bottom of the kettle body is provided with a bottom stirring device, the bottom stirring device includes a lower stirr...

AI Technical Summary

Problems solved by technology

[0005] For polymer polymerization, the heat and mass transfer in the reaction process greatly affects the reaction process and the molecular weight of the polymer; the high-viscosity liquid in the later stage of polymerization is prone to "climbing rod" effect (the material moves upward along the stirring axis) under the action of stirring. "Climbing"), resulting in failures such as mechanical failure and stirring failure; the traditional paddle type, anchor type or a combination of the two structure of the agitator has low stirring efficiency, scattered distribution and slow update of the liquid level, which cannot meet the mass transfer requirements of large reactors. Heat transfer requirements, in summary, the existing technology has not yet been involved in solving the problem of "climbing poles" in the polymerization reaction of molecular materials

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