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

A high-viscosity, polyester technology, applied in the direction of chemical/physical/physicochemical fixed reactors, etc., to improve product quality and reduce production costs

Inactive Publication Date: 2004-01-28
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 manufacturing method of chemical container, and connect kettle body (7) and kettle cover (3) by bolt and flange (4), support (14) is welded on the kettle body (7) and supports kettle body (7) ), the biphenyl heating on the periphery of the kettle body (7) enters the heat medium jacket (19) through the heat medium interface (1) (11) (16), and the inlet and outlet (5) (12) are located on the top of the kettle body and the bottom, the level gauge (13) is installed on the top of the cone, and the vacuum interface (15) is welded on the top of the devolatilizer. Inside the device, the stirring shaft (2) and rolling bearings are fixed on the bottom and top of the kettle body, and the top of the kettle is driven by a motor. On the stirring shaft (2) in the middle and upper part of the still body, a planetary carri...

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Abstract

The present invention discloses a high-viscosity polyester (PET) liquid phase continuous polycondensation production equipment, which utilizes the motor mounted in the top of reactor to drive the rotating shaft fixed in bottom of reactor and top of reactor by bearings, and in the reactor a self-cleaning stirring system formed from planetary gear and helicoid, a devolatilization system and vacuum-pumping pipeline are mounted, and the exterior of the reactor is closed to a homogenization viscosity-increasing reactor which is heated by biphenyl steam. Said reactors can be individually operated, also can be series-connected or parallelly-connected together for operation, and the material can be fed into and discharged out between all the reactors by means of metering pump.

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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IPC IPC(8): B01J19/18C08G63/78
Inventor 王泽新
Owner 王泽新
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