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Recycling system for stripping wastewater in polyvinyl chloride production process

A production process, polyvinyl chloride technology, applied in the direction of water pollutants, filtration treatment, water/sewage treatment, etc., can solve the problems of high energy consumption, complex process, high investment cost, etc., to achieve low energy consumption, low cost, waste water The effect of high recycling rate

Pending Publication Date: 2018-08-24
XINJIANG HUATAI HEAVY CHEM CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This process has high investment cost, high energy consumption and complex process

Method used

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  • Recycling system for stripping wastewater in polyvinyl chloride production process

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Embodiment Construction

[0020] In order to better understand the present invention, the content of the present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments, but the content of the present invention is not limited to the following embodiments.

[0021] Such as figure 1 As shown, the present invention provides a recycling system for stripping waste water in the production process of polyvinyl chloride, including a cooling system 1, a decolorization system 2, and an acetylene generating system 3, and the cooling system 1 includes a heat exchanger 11 and a preheater Sedimentation tank 12, the water inlet of the heat exchanger 11 communicates with the discharge device of stripping waste water in the polyvinyl chloride production process, the water inlet of the pre-sedimentation tank 12 communicates with the water outlet of the heat exchanger 11, and the decolorization System 2 comprises decolorization tank 21, and the water outlet of desc...

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Abstract

The invention provides a recycling system for stripping wastewater in a polyvinyl chloride production process. The recycling system comprises a cooling system, a decolorizing system and an acetylene generating system, wherein the cooling system comprises a heat exchanger and a pre-sedimentation tank, a water inlet of the heat exchanger is communicated with a stripping wastewater drain device in the polyvinyl chloride production process, and a water inlet of the pre-sedimentation tank is communicated with a water outlet of the heat exchanger; the decolorizing system comprises a decolorizing tank, and a water outlet of the pre-sedimentation tank is communicated with a water inlet of the decolorizing tank; the acetylene generating system comprises an acetylene generator, and a water outlet ofthe decolorizing tank is communicated with a water inlet of the acetylene generator. The recycling system has the advantages of low cost, low energy consumption, high wastewater recycling rate and zero discharge.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and in particular relates to a recycling system for stripping waste water in the production process of polyvinyl chloride. Background technique [0002] The stripping wastewater in the polyvinyl chloride process is mainly the waste water produced after the PVC polymer resin slurry is stripped and then sent to the centrifugal filter to separate the filtered mother liquor to rinse the wall of the polymerization tank and drain, and the VCM is recovered after the waste water stripping. This type of wastewater organic pollutants comes from chemicals such as initiators, dispersants and a small amount of wall coating agents added in the polymerization reaction, as well as a small amount of raw material vinyl chloride (VCM), polymerized isomer products and oligomers. This type of wastewater has the characteristics of large discharge, high content of suspended solids, turbidity and colloids, hig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04C02F101/30
CPCC02F9/00C02F1/001C02F1/5236C02F1/56C02F2001/007C02F2101/30
Inventor 王喜平冯斌宫正李强师海峰冶明宇胡应能
Owner XINJIANG HUATAI HEAVY CHEM CO LTD
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