ASPEN PLUS TUTORIALS: INTRODUCTION COURSE - DISTILLATION DSTWU & RADFRAC #6

Опубликовано: 26 Март 2026
на канале: ScuolaTech

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ASPEN TUTORIALS: • ASPEN PLUS

Aspen Tutorial 6: DISTILLATION DSTWU & RADFRAC
Outline:
• Aspen Distillation Options
• DSTWU Distillation
• RadFrac Distillation

In this tutorial we will be learning about the various distillation calculation methods that Aspen uses. We will be completing the separation of our acetone/MIBK streams based on one of the simplified distillation methods, DSTWU and one of the more rigorous distillation calculation methods, RadFrac. From this we will be able to compare the results of the two distillation methods.

Aspen Distillation Options:
Aspen has multiple unit operations options for completing distillation problems, based on the complexity of the user's application. Open up your existing Aspen simulation and click on the Separators tab in the Equipment Model Library. In this tab you will see the first option that users can choose for completing a distillation process, SEP2. This unit operation can be used to model separation processes with only two possible outlet streams. This process can be used to simulate distillations, but it does not provide the level of detail that is available when using some of the other distillation options. Some key variables it does not consider include the number of trays and the reflux ratio. For this reason this option is not recommended except as a very general screening process.
Now select the Columns tab in the Equipment Model Library. You will notice a number of distillation column options. This tutorial will focus on introducing you to the three general distillation choices, DSTWU, Distl, and RadFrac. The other six unit operation choices complete much more rigorous calculations than we require for our application and they are intended for use in more difficult separations and specific applications.

Thanks to the Prof. Rene Overney for the material for these tutorials.
courses.washington.edu/overney