Hi,
I am trying to simmulate separation of ethanol and water( xEth = 0,85 molar % in feed to xEth = 0,99 in bottoms ) at 2000 kPa in a distillation colum. I am using NRTL /SRK as fluid package in HYSYS 8.8
This mixture has a positive azeotrope. Therefore the alcohol rich stream should be the bottom stream of the distillation column. While the colum does converge, I am not able to concentrate up to xEth = 0,99 molar %.
Can anyone help?