It has been few a years since I used Wolfram Mathematica. Here is a flow chart of a chemical process with fractional distillation and recycling.
Does System Modeler able to simulate a process with multiple process units where there is heat, material balance with chemical reactions and manipulate the heat and material input?
I will like to see a working sample.
I only see samples of single Stirr tank reactions, but nothing evoilving a recyclig process with dynamic processes.