How to reduce the formation of melamine in dicyandiamide production?
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I would like to ask the experts: in the production of dicyandiamide (through cooling and crystallization), how can we reduce the contamination of melamine in the final product (dicyandiamide)? In our production process, the melamine content in dicyandiamide is generally 700 ppm; how can it be reduced to around 300 ppm? All experts are welcome to offer guidance! ! !
The formation of melamine is generally believed to occur as heat is released during hydrolysis and decalcification reactions, resulting in the production of melamine. Currently, the reaction temperature in our reaction towers is generally kept at 60 degrees (it used to be over 70 degrees), but the level of melamine remains high!