Effect of solvent concentration on extractive distillation in the acrylonitrile extraction method for butadiene
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I’m using ACN with an 8% water content here. A high water content, along with a reduced solvent concentration, causes alkynes to precipitate out of the solvent, resulting in stratification. This accelerates the hydrolysis of acetonitrile and also acts as a catalyst for that hydrolysis. But when the acetonitrile concentration is low, apart from the increase in the temperature at the bottom of the solvent recovery tower, which can lead to the formation of rubbery polymers, what other effects might occur? Let’s discuss it together. . .
Something that’s been confusing me lately. . I hope to be able to exchange ideas with everyone
If the solvent concentration is low, how can the temperature at the bottom of the solvent recovery tower be high?