classic extractive distillation with 2 simple columns,  with water, ethanol and benzene

Hello everyone,

I wanna do a classic extractive distillation with water, ethanol and benzene.

So I send water and ethanol as feed in column 1, the top product goes in column 2 and I add a second feed with benzene.

Now I expect water, ethanol and benzene to be the top product and ethanol bottom product, but I get 99% benzene as bottom product.

Can anyone help?

DWSIM 29-04-19, 1:40 a.m. SvenderMacher

Can you elaborate more regarding your problem? Which column(shortcut, rigorous or Chemsep) are you using and What are the column specifications you are giving?

30-04-19, 12:24 p.m. Pravin_Dalve

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