Hello everyone! I want to ask you about the optimization of distillation column using ASPEN PLUS. I used the sensitivity analysis and I change the number of stages and I try to see the effect on the reflux ratio, the condenser duty and the reboiler duty. But when I run the simulation, I get warnings that the reflux is not changing and also the condenser and reboiler do not change. Could you please help me?
Thank you in advance!