I am trying to simulate a rigorous column distillation for benzene-toluene mixture.But when i specify Reboiler specification as Compound Fraction in product stream (toluene = .985).I get the error that "Bubble Point method of Wang and Henke doesn't support the defined specifications. Please use the IO method for full specification support".
Can you please let us know which video tutorial are you referring to? The error basically means that there are some particular specifications which is supported by some particular method. So as to converge the results using that method, those specifications are only allowed.