Separation of aniline and N-**amines
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Aniline has a boiling point of 184 degrees, while N-**amine has a boiling point of 196 degrees. The number of plates I calculated using a plate distillation column is 63. It seems quite high to me; could you advise if there are any better separation methods?
I checked the production materials, and distillation is used as the separation method in all cases. As a reminder, aniline and water can form an azeotrope; the original poster might want to look into some information on this. When asked technical personnel involved in aniline production, the azeotrope temperature of aniline and water is 97.8 degrees at normal pressure, with an azeotopic composition (on a molar basis) of approximately 0.91 water and 0.09 aniline. This post was last edited by zhangyong6404 on 2009-2-19 12:39.]
We also use plate distillation towers for separation, and the results are quite good
For organic compounds with high boiling points, we use negative pressure to lower their boiling point