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Liquid-phase continuous condensation polymerization apparatus of high-viscosity polyester (PET)

A high-viscosity, polyester technology, applied in chemical/physical/physical-chemical stationary reactors, etc., to reduce production costs and improve product quality

Inactive Publication Date: 2005-07-13
王泽新
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The one-step production of high-modulus low-shrinkage polyester industrial yarn device and process development was listed as a scientific and technological development project of the chemical fiber industry in the "Tenth Five-Year Plan" and has not yet been fully resolved.

Method used

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  • Liquid-phase continuous condensation polymerization apparatus of high-viscosity polyester (PET)
  • Liquid-phase continuous condensation polymerization apparatus of high-viscosity polyester (PET)
  • Liquid-phase continuous condensation polymerization apparatus of high-viscosity polyester (PET)

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Embodiment Construction

[0025] Below in conjunction with accompanying drawing and embodiment the present invention is described in further detail:

[0026] Manufacture this device according to the manufacture method of chemical container, and connect kettle body 7 and kettle cover 3 by bolt and flange 4, bracket 14 is welded on kettle body 7 and supports kettle body 7, and the biphenyl heating of kettle body 7 periphery is through The heat medium interface 1, 11, 16 enters into the heat medium jacket 19, the inlet and outlet ports 5, 12 are set on the upper and lower parts of the kettle body, the material level gauge 13 is installed on the upper part of the cone body, and the vacuum interface 15 is welded on the devolatilizer upper part. Inside the device, the stirring shaft 2 and rolling bearings are fixed on the bottom and top of the kettle body, and a motor is installed on the top of the kettle. The upper and middle stirring shaft 2 in the kettle body is connected with a planetary carrier 6 by a ...

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Abstract

The invention discloses a liquid-phase continuous polycondensation production device for high-viscosity polyester (PET). The self-cleaning mixing system, devolatilization system and vacuum port pipeline composed of planetary gear and spiral body, and the homogenizing thickening tank heated by biphenyl steam outside. It can be run alone or several in series or in parallel, and the materials are used in and out of each kettle by metering pumps. The device is compatible with the advantages of the current polyester (PET) continuous production polycondensation kettle and batch production polycondensation kettle. The molten low-viscosity polymer is continuously fed into the kettle, scraped off from the heat transfer surface of the kettle wall after devolatilization, mixed and sheared to form local microscopic full mixing, and the overall macroscopically presents a plug flow of continuous production in the form of flat push , The polymer is continuously mixed, kneaded and cut during the whole process. After the thickening reaction is completed, it is continuously sent out of the kettle in a very uniform form.

Description

technical field [0001] The invention relates to a polymer polymerization device, in particular to a high-viscosity polyester (PET) liquid-phase continuous polycondensation device. Background technique [0002] At present, polyester (PET) liquid-phase polycondensation can only produce low-viscosity products with an intrinsic viscosity of about 0.65. For raw materials for bottles with an intrinsic viscosity of 0.75 to 0.85, both domestic and foreign production methods are produced by solid-state polycondensation, or by special-structure final polycondensation tanks equipped with cage-type agitators without central shafts. [0003] The intrinsic viscosity is required to be above 0.90, and it is used to produce high-strength, high-modulus, low-shrinkage industrial filament and cord PET. At present, solid-state polycondensation is used for production both at home and abroad. Due to the inherent characteristics of the solid-state polycondensation process, the difference in intrin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J19/18C08G63/78
Inventor 王泽新
Owner 王泽新
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