Ethanol Water Azeotropic Distillation at High pressure using HYSYS 3.2

[salman20]

I need HYSYS case study for Ethanol Water Azeotropic Distillation to achieve 99% purity from 80% purity. At what pressure column should be operated to break the aezotrope? I m operating the column at 10 atm. Which Activity Model ( Fluid package ) should be used? I am using NTRL but column is un-converged. What Binary Coefficients should be used ?
Anyone can give any other suggestion.

[Speereht]

I need HYSYS case study for Ethanol Water Azeotropic Distillation to achieve 99% purity from 80% purity. At what pressure column should be operated to break the aezotrope? I m operating the column at 10 atm. Which Activity Model ( Fluid package ) should be used? I am using NTRL but column is un-converged. What Binary Coefficients should be used ?
Anyone can give any other suggestion.

Hi Salman20; Ethaol and water can be separated using azeotropic distillation; using a distillation agent like benzene in this case( and you will need a new collum to recovery the benzene) or modify the pressure, in this case you need two colums, the first one is to achieve a 95%wt of ethanol (azeotropic point) and now you send the ethanol vapour phase to another colum at different pressure( 0.2 Bar, for example) and here you can obtain a pure ethanol.
If you need more help send me an e-mail. (Sorry for my poor English)

[haih5]

Hi Salman20; Ethaol and water can be separated using azeotropic distillation; using a distillation agent like benzene in this case( and you will need a new collum to recovery the benzene) or modify the pressure, in this case you need two colums, the first one is to achieve a 95%wt of ethanol (azeotropic point) and now you send the ethanol vapour phase to another colum at different pressure( 0.2 Bar, for example) and here you can obtain a pure ethanol.
If you need more help send me an e-mail. (Sorry for my poor English)

Hello
Speereht

Could you tell me how many theoretical plate there are in the beer column (Bioethanol plant) and in the rectified colum, normally? Or overall coefficient of these towers. I'm simulating the rectifier column to get a mixture of 95% alcohol on top.

Thank you very much, looking forward to your reply soon.