Vapor Liquid equillibrium

[Veramocor]

Anyone know of any freeware programs that can do three component vapor liquid equilibrium calculations?

 

[CycloWizard]

No. The data for such systems is pretty sparse in the public literature, so it would be very difficult for anyone to write such a program unless they had access to proprietary data (in which case they probably wouldn't be allowed to publish the program). Or are you wanting a program that will predict the behavior using molecular theory/physical chemistry? I'm not sure if a freeware version of the latter exists, but it may be more likely.

 

[PsiStar]

I'll start off with ... I have long long ago forgotten what this is in any arguable detail, but that is better than "I have absolutely no idea". Not that that has stopped many other comments from others in forums.

Anyway, I googled "three component vapor liquid equilibrium calculations excel" and see some possibilities with comments how one would proceed in Excel. I often start with Excel as it does have a goal seek linear optimization addin. Depending on how that works I may move to MathCAD or Matlab. I think I also saw a Russian professor's work in MathCAD a couple of years ago for water vapor.