#165 Distillation column does not meet the mass balance

[Juan Ignacio Manassaldi]

Hi, the distillation column does not meet the mass balance but figures as resolved.

[Daniel Medeiros]

Replace the Reboiled Absorber by a ChemSep column.

[Juan Ignacio Manassaldi]

I can't find the chem sep column.

[Daniel Medeiros]

CAPE-OPEN Unit Operation, then select ChemSep.

[Juan Ignacio Manassaldi]

Ok, i'm testing... Thanks You!

[Juan Ignacio Manassaldi]

I was able to make it work.
What is the problem with the native distillation collum?

[Daniel Medeiros]

I'm not supporting Reboiled/Refluxed Absorber columns in DWSIM anymore, they're there only for compatibility reasons.

[Juan Ignacio Manassaldi]

ok.
I will try to use the native distillation collum with full reflux condenser
Thanks!

[Daniel Medeiros]

If you're on Windows there's no reason not to use ChemSep unless you're working with compounds that it doesn't support. Other than that, ChemSep's column model is much superior to DWSIM's internal model.

[Juan Ignacio Manassaldi]

Yes, i use ChemSep without problems but we are introducing your simulator in our course.
For teaching I prefer stay only in DWsim.
Thanks!

[Daniel Medeiros]

I see. I usually try my column models first when I need them, if they fail to converge after a few tweaks, I change it to a ChemSep column. Even ChemSep has trouble converging in some cases...