Feeding device for esterification reactor

A technology of esterification reaction kettle and feeding device, which is applied in feeding device, chemical instrument and method, chemical/physical process, etc., can solve the problems of long processing time, reduced output efficiency, etc., and shorten the time of alcoholysis , the effect of improving efficiency

Inactive Publication Date: 2015-04-29
江苏宝田新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, in the polyester production process, the PET raw material is usually first heated to a molten state, and then added to the esterification reactor together with the alcohol. The alcohol and the PET raw material are first subjected to alcoholysis, and then the esterification reaction, which leads to The process takes a long time, which reduces the efficiency of the output

Method used

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  • Feeding device for esterification reactor

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Embodiment Construction

[0010] The feeding device of the esterification reactor according to the present invention will be further described in detail through specific examples below.

[0011] like figure 1 As shown, the feeding device of the esterification reactor includes a barrel 1, one end of the barrel 1 is provided with a feed hopper 2, the bottom of the feed hopper 2 is connected with the barrel 1, and the upper part of the feed hopper 2 is PET The bottle flake inlet 3, the side of the feed hopper 2 is provided with an alcohol feed pipe 4, the other end of the barrel 1 is a discharge port 5, the barrel 1 is provided with a screw 6, and the outside of the barrel 1 is provided with a screw Driving device, in this embodiment, the screw driving device is a motor 7, and a heating device is arranged on the wall of the barrel 1. In this embodiment, the heating device is an electric heating sheet arranged on the wall of the barrel 1 8.

[0012] The feeding device of the above-mentioned esterificatio...

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Abstract

The invention relates to a feeding device for an esterification reactor. The feeding device comprises a barrel, wherein one end of the barrel is provided with a feeding hopper, the bottom of the feeding hopper is connected with the barrel, the upper part of the feeding hopper is provided with a PET (polyethylene terephthalate) bottle piece inlet, the side part of the feeding hopper is provided with an ethanol feeding pipe, and the other end of the barrel is provided with a discharging port; and a screw rod is arranged in the barrel, a screw rod driving device is arranged outside the barrel, and a heating device is arranged on the wall of the barrel. The feeding device for the esterification reactor adopts the mode of screw rod extrusion by feeding PET bottle pieces and ethanol together at the feeding port, so that the melting of PET bottle pieces as well as alcoholysis in advance is achieved in the barrel, the alcoholysis time in the esterification reactor is shortened, and the output efficiency is improved.

Description

technical field [0001] The invention relates to the field of polyester production equipment, in particular to a feeding device for an esterification reactor. Background technique [0002] In the polyester production process, PET raw materials and alcohol are sent into the esterification reaction tank for esterification reaction, and then the PBT finished product is obtained after the pre-shrinking tank and the final shrinking tank. At present, in the polyester production process, the PET raw material is usually first heated to a molten state, and then added to the esterification reactor together with the alcohol. The alcohol and the PET raw material are first subjected to alcoholysis, and then the esterification reaction, which leads to The process takes a long time, which reduces the efficiency of the output. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a feeding device for an esterification reactor capable ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J4/00
Inventor 蒋云
Owner 江苏宝田新材料股份有限公司
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