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Method and device for reducing self-polymerization of tank vinyl chloride monomers

A vinyl chloride monomer and monomer technology, applied in cooling fluid circulation devices, separation methods, household refrigeration devices, etc., can solve problems such as self-polymerization of vinyl chloride spherical tank monomer pipelines, and reduce production safety risks and operating costs , pressure drop, self-aggregation reduction effect

Pending Publication Date: 2021-02-02
新疆圣雄氯碱有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a method and device for reducing the self-polymerization of vinyl chloride monomer in a spherical tank, which overcomes the above-mentioned deficiencies in the prior art, and can effectively solve the problem of self-polymerization of vinyl chloride spherical tanks and monomer pipelines in the existing production of vinyl chloride. poly serious problem

Method used

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  • Method and device for reducing self-polymerization of tank vinyl chloride monomers

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1: as attached figure 1 As shown, the method for reducing the self-polymerization of vinyl chloride monomer in the spherical tank includes: first, install a refined monomer cooler 1 before feeding the spherical tank 2, and use 0 ° C water to feed the vinyl chloride monomer fed into the spherical tank 2 The temperature of the monomer is lowered to reduce the temperature of the spherical tank 2; secondly, an automatic drainage device is installed at the bottom of the spherical tank 2, and the spherical tank 2 is drained on time to reduce the acidic substances produced by the hydrolysis of the peroxide, and reduce the monomer pipeline and the spherical tank 2. Vinyl chloride monomer is self-polymerized.

[0022] On the one hand, the present invention installs a refined monomer cooler 1 between the front hand valve and the regulating valve of the feed regulating valve of the spherical tank 2, and uses 0°C water for cooling, so that the temperature of the monomer ...

Embodiment 2

[0023] Embodiment 2: as attached figure 1 As shown, the device for implementing the method for reducing the self-polymerization of vinyl chloride monomer in a spherical tank includes a refined monomer cooler 1, a spherical tank 2 and a drain tank 3, and the bottom tube side inlet of the refined monomer cooler 1 is fixedly connected to a refined Monomer pipeline 4, refined monomer cooler 1 top tube side outlet and spherical tank 2 bottom inlet are fixedly connected with refined monomer tank inlet pipeline 5, refined monomer cooler 1 bottom shell side inlet is fixedly connected with 0 degree water The water pipeline 6, the top shell side outlet of the fine monomer cooler 1 is fixedly connected with the 0 degree water return pipeline 7, the bottom drain of the spherical tank 2 and the top water inlet of the drain tank 3 are fixedly connected with the drain pipeline 8, and the drain tank 3 The water outlet at the bottom is fixedly connected with a sewage discharge pipeline 9 , the...

Embodiment 3

[0025] Embodiment 3: as the optimization of above-mentioned embodiment, as attached figure 1 As shown, a fifth valve 16 , a first automatic regulating valve 13 and a flow meter 14 are fixedly installed on the line 5 of the refined monomer into the tank in sequence.

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Abstract

The invention relates to the technical field of vinyl chloride production, particularly to a method and a device for reducing spherical tank vinyl chloride monomer self-polymerization. The method is characterized in that a fine monomer cooler is additionally arranged before feeding of a spherical tank, and an automatic drainage device is additionally arranged at the bottom of the spherical tank, so that the vinyl chloride monomer self-polymerization phenomenon of pipelines and equipment is reduced. The device comprises a fine monomer cooler, a spherical tank and a drainage tank, wherein a finemonomer pipeline is fixedly communicated with the bottom tube pass inlet of the fine monomer cooler, a fine monomer enter-tank pipeline is fixedly communicated between the top tube pass outlet of thefine monomer cooler and the bottom inlet of the spherical tank, a drainage pipeline is fixedly communicated between the bottom drainage port of the spherical tank and the top water inlet of the drainage tank, and the middle air inlet of the drainage tank is fixedly communicated with a low-pressure steam pipeline. According to the invention, by cooling the vinyl chloride monomer entering the spherical tank and automatically draining the spherical tank, the temperature and the pressure of the spherical tank are reduced, the standing water removal effect of the spherical tank is obvious, the self-polymerization phenomenon is reduced, the production is stable, and the production safety risk and the operation cost of an enterprise are greatly reduced.

Description

technical field [0001] The invention relates to the technical field of vinyl chloride production, and relates to a method and a device for reducing the self-polymerization of vinyl chloride monomer in spherical tanks. Background technique [0002] At present, there is no other cooling equipment for the refined monomer produced by ethylene distillation into the vinyl chloride spherical tank, which leads to high temperature of the spherical tank, especially in summer, high pressure of the spherical tank and poor standing water removal effect. Oxygen can react with monomers to produce peroxides, and water can hydrolyze peroxides to produce acidic substances such as hydrogen chloride, formic acid, and formaldehyde, which trigger the self-polymerization of vinyl chloride monomer spherical tanks and monomer pipelines, and the annual cost of cleaning self-polymers is relatively high high. [0003] At the same time, the drainage of the vinyl chloride spherical tank is manual draina...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J19/00F25D31/00F25D17/02B01D53/78B01D53/70
CPCB01J19/00B01J19/0053F25D31/00F25D17/02B01D53/78B01D53/70B01D2257/2064
Inventor 刘凯陈勇江王世刚汪福兵徐东红沈宗员单玲冯玉林李成杰
Owner 新疆圣雄氯碱有限公司