Residue Curve Map for a Non-Ideal Ternary Mixture with a Distillation Boundary

Requires a Wolfram Notebook System

Interact on desktop, mobile and cloud with the free Wolfram CDF Player or other Wolfram Language products.

Requires a Wolfram Notebook System

Edit on desktop, mobile and cloud with any Wolfram Language product.

This Demonstration plots the residue curve of a non-ideal ternary mixture composed of benzene, -butanol and -propanol. Deviation from ideal behavior in the liquid phase is taken into account using the Wilson model in order to compute the activity coefficients. The total pressure is 101.325 kPa. This mixture presents two azeotropes: (1) between benzene and -propanol, marked in the ternary diagram by (77% mole fraction of benzene); (2) between benzene and -butanol, marked in the ternary diagram by (88.62% mole fraction of benzene). This ternary mixture has two distillation regions (the yellow and green shaded areas) with a distillation boundary connecting the two binary azeotropes (the straight red segment in the diagram). Benzene and -butanol are stable nodes; -propanol and are two saddle points, and finally is an unstable node. You can change the position of the locator to plot the residue curve passing at the locator position.

Contributed by: Housam Binous (March 2011)
Open content licensed under CC BY-NC-SA


Snapshots


Details

For more information, see

M. F. Doherty and M. F. Malone, Conceptual Design of Distillation Systems, New York: McGraw-Hill, 2001.



Feedback (field required)
Email (field required) Name
Occupation Organization
Note: Your message & contact information may be shared with the author of any specific Demonstration for which you give feedback.
Send