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Recycled monomer processing device for polyvinyl chloride production and method for processing recycled monomer for polyvinyl chloride production

A polyvinyl chloride and processing device technology, applied in the field of recycled monomers for polyvinyl chloride production

Active Publication Date: 2019-10-01
XINJIANG ZHONGTAI CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a recycling monomer processing device for polyvinyl chloride production and a recycling monomer processing method for polyvinyl chloride production, which overcomes the deficiencies of the prior art and can effectively solve the problem that my country's PVC industry has not been concerned with recycling monomers. Specific treatment of residual initiators, initiator free radicals, high boilers and other residual additives, etc.

Method used

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  • Recycled monomer processing device for polyvinyl chloride production and method for processing recycled monomer for polyvinyl chloride production
  • Recycled monomer processing device for polyvinyl chloride production and method for processing recycled monomer for polyvinyl chloride production
  • Recycled monomer processing device for polyvinyl chloride production and method for processing recycled monomer for polyvinyl chloride production

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Effect test

Embodiment 1

[0024] Embodiment 1, as attached figure 1As shown, the recovered monomer treatment device for polyvinyl chloride production includes an alkali washing tower 1, a recovered primary condenser 4, a recovered secondary condenser 6, a liquid seal tank 9, a recovered monomer rectifying tower 12, and a recovered monomer Delivery pump 14 and polymerization inhibitor storage tank 18; Gas phase recovery monomer main pipe 2 is fixedly installed at the tower body bottom of alkali washing tower 1, and lye inlet pipeline 21 is fixedly installed at the tower body top of alkali washing tower 1, and The tower bottom of the alkali washing tower 1 is fixedly installed with a lye outlet pipeline 3, and a recovery monomer outlet pipeline 5 is fixedly installed between the tower top of the alkali washing tower 1 and the heat medium feed port of the recovery primary condenser 4 A condenser connection pipeline 7 is fixedly installed between the gas outlet at the top of the recovery primary condenser ...

Embodiment 2

[0025] Embodiment 2, as the optimization of above-mentioned embodiment, as attached figure 1 As shown, the recovered monomer treatment device for polyvinyl chloride production also includes an alkali preparation tank 22 and an alkali washing tower circulation pump 23; Together, an alkali washing tower circulation pump 23 is fixedly installed on the alkali liquor inlet tower pipeline 21, and an alkali liquor flowmeter is fixedly installed on the alkali liquor inlet tower pipeline 21 between the alkali washing tower circulation pump 23 and the alkali washing tower 1 respectively. 24 and lye flow regulating valve 25, the other end of the lye preparation tank 22 and the alkali washing tower circulation pump 23 between the lye preparation tower pipeline 21 and the other end of the lye discharge tower pipeline 3 is fixedly installed together; the lye preparation tank 22 The upper end of the lye preparation tank exhaust pipeline 26 is fixedly installed. The lye in the lye washing to...

Embodiment 3

[0026] Embodiment 3, as the optimization of embodiment 2, as attached figure 1 Shown, on the alkali lye inlet tower pipeline 21 after alkali lye flowmeter 24 and alkali lye flow control valve 25, be fixedly installed with alkali lye preheater 27, the cooling of alkali lye inlet tower pipeline 21 and lye preheater 27 The medium inlet and outlet are fixedly installed together; or / and, a self-control valve 28 is fixedly installed on the lye preparation tank exhaust pipeline 26; or / and, the other end of the lye preparation tank exhaust pipeline 26 is located at the lye security receiving cylinder 29 Inside. The lye preheater 27 can cool down and heat up the circulating lye.

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Abstract

The invention relates to the technical field of recycling monomers for polyvinyl chloride production and provides a recycling monomer treatment device for polyvinyl chloride production and a recycling monomer treatment method for polyvinyl chloride production. The device comprises an alkaline tower, a recycling first-stage condenser, a recycling second-stage condenser, a liquid seal trough, a recycling monomer rectification tower, a recycling monomer conveying pump and a polymerization inhibitor storage tank. A gaseous-phase recycling monomer main pipe is fixedly installed on the lower portion of a tower body of the alkaline tower, an alkaline liquid tower-entering pipeline is fixedly installed on the upper portion of the tower body of the alkaline tower, and an alkaline liquid tower-outgoing pipeline is fixedly installed at the tower bottom of the alkaline tower. The device and the method can effectively remove high-boiling residue impurities and residual auxiliaries in recycling monomers, so the quality of the recycling monomers is improved, quality running of the recycling monomers is stable, the use amount of initiator is kept balanced, resin whiteness is effectively improved, the following auto-agglutination problem of process pipelines and equipment is solved, raw materials for producing auxiliaries are saved, and product quality is improved.

Description

technical field [0001] The invention relates to the technical field of recovered monomers used in polyvinyl chloride production, and relates to a treatment device for recovered monomers used in polyvinyl chloride production and a treatment method for recovered monomers used in polyvinyl chloride production. Background technique [0002] At present, the competition in the domestic PVC industry is fierce. In order to adapt to the market environment, it is of great significance to reduce production costs through technological transformation and optimization to improve product quality and stable operation of packaging production equipment. The quality of recovered monomer is the key factor affecting the whiteness index of PVC product quality, the self-polymerization of pipeline equipment in process equipment and the large amount of initiator used in the polymerization production process, and the quality of recovered monomer can effectively control the residual initiator in it , ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J11/02C08F14/06
CPCC08F14/06C08J11/02C08J2327/06Y02P20/10Y02P20/50
Inventor 王世刚冯亮刘枫张宝华杨振波王志军赵爱民
Owner XINJIANG ZHONGTAI CHEM CO LTD
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