Why cannot the storage temperature of acrylonitrile exceed 30 degrees?
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As stated in the title, GB 7717.1–194 specifies that \"5.4.2 When storing industrial acrylonitrile products, it is necessary to ensure proper ventilation, keep them away from sources of ignition, maintain a temperature below 30 degrees, and provide appropriate safety measures as well as fire-fighting facilities.\" ”May I ask why it shouldn’t exceed 30 degrees?
Not only is a temperature requirement necessary, but a polymerization inhibitor must also be added
Yes, acrylonitrile polymerizes if the temperature exceeds 30 degrees. Moreover, different inhibitors are used for the various applications of acrylonitrile.
Acrylonitrile is highly toxic and prone to polymerization; therefore, a polymerization inhibitor is added. However, the inhibitor is effective only in the presence of oxygen. As such, storage requires oxygenated nitrogen sealing along with external circulation cooling, and the delivery pipelines must be equipped with circulation systems to prevent polymerization.
Acrylonitrile is highly toxic, prone to self-polymerization, and volatile. Therefore, storage requires a nitrogen seal and controlled storage temperature.
What is the storage temperature for acrylonitrile?
Below 32 degrees, in northern regions, water spraying measures should be taken for acrylonitrile storage tanks during summer； In the southern regions, when the ambient temperature exceeds 32 degrees, a low-temperature solvent must be added to the spray water.
Well, thank you very much············ May I ask one more question? Is this based on your own experience, or did you read it in some book? Could you tell me a bit? Thank you so much········
Of course, it comes from practical experience in production facilities. In the south, during summer, the daytime temperatures usually exceed 35 degrees, and the water temperature is also above 32 degrees; in such conditions, using spray cooling is ineffective.
Where do you work? I’m in Nantong. Is this needed here?