We would like to ask for help with regard to our set-up in DWSIM because we kept getting an error like ''Invalid Value for Distillate Rate: Parameter D'' and other errors occurred while solving the flowsheet, most especially on the distillation column part.
You may access our DWSIM file (together with the original problem similar to our set-up) here: https://drive.google.com/drive/folders/1gR2ir5aWWkxigkZTpq1HFIjwEvsiZKjs?usp=sharing
We really need your help with this matter.
You are getting this error because the feed stream that is entering the shortcut column doesn't contain any ethylbenzene and styrene. Kindly check the composition of material stream EB,S.