Aspen is not as good as HYSYS for distillation column calculations
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Today I tried using Aspen to model a distillation column, but it doesn’t seem as effective as HYSYS; convergence is difficult. Could someone please advise me on techniques to improve convergence for distillation columns!
HYSYS was originally the DOS version of HYSIM, and its feature is easy convergence. Aspen also converges quickly for simple distillation columns; for those with multiple side streams, setting a design space can sometimes accelerate convergence.
It’s still more convenient to use Aspen for tower calculations; Aspen allows for detailed calculation of tower parameters such as tower diameter and packing. It seems that HYSYS doesn’t have this functionality