Storage of acrylic acid and addition of antipollution agents
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I have just added an acrylic storage tank; external jacketing is used for cooling, with the cooling water at 32 degrees. Out of concern over polymerization, I read that a polymerization inhibitor is necessary. I would like to know how much inhibitor should be used or what kind of stabilization system would be appropriate.
The temperature is a bit high; the higher the temperature, the easier it is for polymerization to occur. A temperature of 20-25 degrees Celsius is more suitable. Hydroquinone can be used as a polymerization inhibitor – it is a commonly used substance for this purpose – but it needs to be in an oxygen-rich environment to exert its inhibitory effect. Storage tanks should not be sealed with nitrogen.
Keep the temperature under control; generally, there is no need to add a polymerization inhibitor. Polymerization inhibitors are used in the acrylic acid production process as well, usually at around 200 ppm
The acrylic underground tanks we produce have separate constant-temperature deionized water tanks, with the coils inside these tanks. The constant-temperature deionized water tanks are maintained at 25°C, and they feature double jackets for hot and cold water. p-Hydroxyanisole for polymerization inhibitors