Simulation of dilute ethanol concentration
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How to simulate the concentration of a 65 wt %/35 wt % ethanol/water mixture to a 95 wt % ethanol solution? Previously, the processes of producing anhydrous ethanol using heterogeneous azeotropic distillation and extractive distillation were successfully simulated; this issue was never considered back then. However, now that we want to take the concentration column into account as well, it turns out to be difficult to achieve 95 wt% ethanol. I hope fellow sailors can help!
It’s difficult to achieve it in one step; first perform ordinary distillation to reach the azeotrope, and then use special distillation
There is no change in direction; it’s just an issue related to the direction.
Thank you for the reply. What I want to ask is that it’s basically very difficult to achieve 95 wt% of ethanol using conventional distillation (the azeotrope temperature should be 95.4/4.6 wt% ethanol/water); I’m not sure why Now I’ve found the reason.
Physical property method/Petrochemical calculation options/Changing the water solubility from the default value of 3 to 2 results in the aforementioned issue； If we change it back now, there will be no problem. But I still don’t know what use this option has!