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Macromolecular material polymerization reaction kettle

A technology for polymerization reactors and polymer materials, applied in chemical/physical/physical-chemical stationary reactors, mixers, mixers with rotary stirring devices, etc., can solve the problems affecting the reaction process and polymer molecular weight, stirring failure , mechanical failure and other problems, to achieve the effect of improving the efficiency of mass transfer activities such as devolatilization, increasing heat transfer efficiency, and improving stirring efficiency

Active Publication Date: 2011-09-21
SICHUAN KEXIN MECHANICAL & ELECTRICAL EQUIPCO
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  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Macromolecular material polymerization reaction kettle
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Embodiment 1

[0045] Describe a polymer material reaction kettle according to the present invention. The height of the barrel part of the reaction kettle is 1200mm, the inner diameter is 1100mm, the height of the wide mouth part is 390m, the bottom angle of the wide mouth is 60°, the bottom angle of the conical part is 90°, and the diameter of the outlet at the center of the bottom of the kettle is 100mm. Outlet valve. The jacket gap is 16mm, and the thickness of the insulation layer is 50mm. The diameter of the stirring shaft is 160mm, the width of the inner propeller blade is 100mm, and the width of the outer propeller blade and scraper blade is 100mm. The diameter of the feed pipe is 200mm, extending into the kettle by 150mm. Equipped with a water ring Roots vacuum unit with a maximum pumping capacity of 300L / s.

[0046] When the thermoplastic polyester elastomer polycondensation process with a hard segment content of 58% is carried out in the reactor, the absolute pressure is 100Pa, ...

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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 anda 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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J19/18B01F7/24
Inventor 赵丕龙陈双辉李勇潘玉林赵海英
Owner SICHUAN KEXIN MECHANICAL & ELECTRICAL EQUIPCO
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