Emergency treatment method for refined vinyl acetate

A technology of refined vinyl acetate and vinyl acetate, which is applied in the field of chemical safety, can solve problems such as accidents, major production safety responsibilities, explosions, etc., and achieve the effect of preventing violent polymerization accidents and eliminating the risk of violent polymerization

Active Publication Date: 2013-10-30
CHINA PETROLEUM & CHEM CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The vinyl acetate storage tanks in most vinyl acetate storage devices cannot withstand these pressure environments. The crude vinyl acetate storage tanks of Guangxi Vinylon Factory exploded for this reason, causing major production safety liability accidents. Other major vinyl acetate manufacturers also Near miss accident involving runaway polymerization of vinyl acetate storage tanks

Method used

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  • Emergency treatment method for refined vinyl acetate
  • Emergency treatment method for refined vinyl acetate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] The vinyl acetate storage device of the present invention comprises a vinyl acetate storage tank 1, a vinyl acetate material feed valve 2 arranged on the vinyl acetate storage tank, a thermometer 3 arranged on the vinyl acetate storage tank, a cooler 4, an outlet Material pump 5, emergency discharge valve 6, discharge valve 7, material feed pipeline, discharge pipeline, spray water device and spare storage tank 10 composed of spray head 8 and water supply pipeline 9, the material The feed valve 2 is connected to the vinyl acetate storage tank 1 through the material feed pipeline, one end of the discharge pump 5 is connected to the vinyl acetate storage tank 1 through the discharge pipeline, and the other end is connected to the vinyl acetate storage tank 1 through the discharge pipe. One branch of the pipeline is connected with the emergency discharge valve 6, the other branch of the discharge pipeline is connected with the discharge valve 7, and the emergency discharge ...

Embodiment 2

[0063] Refined vinyl acetate material is housed in the vinyl acetate storage tank in the vinyl acetate storage device in embodiment 1, determines that this refined vinyl acetate reaches the required time TMRad=24h of maximum reaction rate under adiabatic condition, judges the refined vinyl acetate In the state of existence, when the purified vinyl acetate is in a dynamic state, its emergency treatment temperature is set at 57.5°C. The temperature of the refined vinyl acetate material in the vinyl acetate storage tank is measured in real time by the thermometer 3 provided on the refined vinyl acetate storage tank 1; when the temperature of the refined vinyl acetate material in the storage tank reaches the emergency treatment temperature of 57.5°C, Close the refined vinyl acetate material feed valve 2, cut off the feed, open the polymerization inhibitor feed valve at the same time, add a large amount of polymerization inhibitor hydroquinone in the vinyl acetate storage tank 1, an...

Embodiment 3

[0065]In the vinyl acetate storage tank 1 in the vinyl acetate storage device in embodiment 1, the refined vinyl acetate material is housed, and the time TMRad=24h that this refined vinyl acetate reaches the maximum reaction rate required under adiabatic conditions is determined, and the refined vinyl acetate is judged In the state of existence of refined vinyl acetate in a static state, when the initial storage temperature of the refined vinyl acetate material stored in the storage tank is detected by the thermometer 3 on the vinyl acetate storage tank 1 at 20°C, the emergency treatment temperature Set to 43.5°C. The temperature of the refined vinyl acetate material in the vinyl acetate storage tank 1 is measured in real time by the thermometer 3 installed on the refined vinyl acetate storage tank; when the temperature of the refined vinyl acetate material in the storage tank reaches the emergency treatment temperature of 43.5°C, Close the refined vinyl acetate material feed ...

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PUM

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Abstract

The invention provides a vinyl acetate storage device, which comprises a vinyl acetate storage tank, a vinyl acetate material feeding valve, a temperature detecting device, a cooler and a standby device, wherein the vinyl acetate material feeding valve and the temperature detecting device are arranged on the vinyl acetate storage tank, the vinyl acetate storage tank is connected with the standby device via the cooler, the feeding valve is of an automatic valve structure, the standby device is a standby storage tank, and the temperature detecting device is a thermometer. When the vinyl acetate storage device is used for storing refined vinyl acetate, reasonable emergency treatment temperature is set and effective emergency treatment measurements are put forward for the refined vinyl acetate stored in the vinyl acetate storage device during operation and stoppage of the vinyl acetate storage device, so that flash polymerization danger of the refined vinyl acetate stored in the vinyl acetate storage tank facing incontrollable polymerization is eliminated, and flash polymerization accidents are prevented.

Description

technical field [0001] The invention relates to the technical field of chemical safety, in particular to an emergency treatment method for purified vinyl acetate. Background technique [0002] Vinyl acetate is one of the 50 largest chemical raw materials in the world. A synthetic polymer compound obtained by polymerization or copolymerization of vinyl acetate. Because it can produce a series of derivatives such as polyvinyl acetate, polyvinyl alcohol, and acetal resin, vinyl acetate has been widely used in the fields of coatings, synthetic fibers, leather processing, and soil improvement. more and more widely used. [0003] Vinyl acetate monomer (VA) is a readily polymerizable chemical intermediate and a building block for many polymer and emulsion applications. Laboratory data shows that under normal circumstances, the storage of specification grade vinyl acetate monomer (VA) will not form polymers, but experience has shown that polymerization initiators are easily introd...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B65D88/12B65D90/22B65D90/48
Inventor 姜杰刘世均张晨谢传欣石宁付武华王东强徐伟张宏哲张铁
Owner CHINA PETROLEUM & CHEM CORP
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