Re: Matlab HDA model Date: 01 Mar 2009 Dear Sigurd, This model was given to me by Marius. I did some little fixing (things I do not remember anymore) long time ago. It is not still suitable for steady-state (optimization) computations, and I think there are too many equations/variables that, I presume, are of no use. I'm afraid I haven't had the time to adjust it more properly so we could utilize it as a testbed. Maybe your PhD student can do something to improve its usage. I did not use the Matlab model in my thesis. Instead, I used Aspen Plus and did the optimization in it only for the reaction-recycle section. The distillation section we assumed perfect separation. Cheers, Antonio