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Bottom stirring device of PET solid phase polycondensation tower

A solid-phase polycondensation, stirring device technology, applied in mixers with rotary stirring devices, chemical/physical/physical-chemical stationary reactors, dissolution, etc. Affect the continuous flow of materials and other problems, to achieve the effect of improving reliability and preventing material agglomeration

Inactive Publication Date: 2014-02-19
占协琼
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0006] However, PET pellets are easy to agglomerate during the heating period in the tower, so there is often material blocking at

Method used

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  • Bottom stirring device of PET solid phase polycondensation tower

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[0015] The following describes the present invention in further detail with reference to the accompanying drawings and specific embodiments, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

[0016] Such as figure 1 As shown, the stirring device at the bottom of the PET solid-phase polycondensation tower includes a motor 1, a reducer 2, a coupling 3, a stirring shaft 4, a stirrer 5, and a sealing shaft 6. The motor 1 is connected to the reducer 2, and the coupling The agitator 3 is arranged at the port of the reducer 2, the stirring shaft 4 is connected with the reducer 2 through a coupling 3, the agitator 5 is arranged on both sides of the stirring shaft 4, and the sealing shaft 6 is arranged at the end of the stirring shaft 4.

[0017] Preferably, the coupling 3 adopts a rigid connection.

[0018] As a further stirring device, the stirr...

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Abstract

The invention discloses a bottom stirring device of a PET solid phase polycondensation tower. The bottom stirring device comprises a motor, a speed reducer, a shaft coupling, a stirring shaft, a stirrer and a shaft seal. The motor is connected to the speed reducer; the shaft coupling is arranged at a port of the speed reducer; the stirring shaft is connected to the speed reducer via the shaft coupling; the stirrer is arranged on the both sides of the stirring shaft; and the shaft seal is arranged on the tail end of the stirring shaft. Compared with existing technology, the improved PET solid phase polycondensation tower is capable of avoiding material caking effectively, increasing reliability of equipment operation, and ensuring smooth progress of continuous solid phase polycondensation.

Description

technical field [0001] The invention relates to a PET solid-phase polycondensation tower, in particular to a stirring device for the PET solid-phase polycondensation tower. Background technique [0002] PET solid-state polycondensation is to heat PET slices with a small molecular weight (intrinsic viscosity is about 0.67dL / g) above the glass transition temperature, and under the condition of 30-60°C lower than the melting point, undergo solid-state polycondensation under the protection of nitrogen. Make its molecular weight increase, and its intrinsic viscosity increase to above 0.95dL / g, the purpose is to improve the breaking strength of its fiber. The structure and performance of solid-state polycondensation equipment directly affect the quality of PET industrial yarn. [0003] The main technological process of PET solid-state polycondensation is as follows: [0004] PET slice-1 pre-crystallization 1-I crystallizer II preheating tower 1-I solid phase polycondensation tow...

Claims

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Application Information

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IPC IPC(8): B01J19/18B01F7/04C08G63/80
Inventor 占协琼
Owner 占协琼
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