Rigorous Simulation for Distillation of Non-Ideal Binary Mixture

Consider a distillation column with 10 stages, a partial reboiler, and a total condenser operating at . This column is used to separate a non-ideal mixture of ethanol and water. Deviation from ideal behavior in the liquid phase is taken into account by using the Wilson model and a modification of Raoult's law. The feed is a saturated liquid with a composition of 50 mole% ethanol. The feed is introduced at stage 8. You can change the values of the reboil and reflux ratios, and , respectively. This rigorous simulation computes the composition profile by solving both material and energy balance equations. For and , the results obtained are compared to those provided by HYSYS, a major chemical process simulator (http://www.aspentech.com/hysys/). HYSYS results for the composition of ethanol and water in the column are shown with open orange and blue circles, respectively. For such a feed (i.e. relatively rich in water) and for large values of and , the bottom is almost pure water and the distillate approaches the composition of the positive azeotrope between ethanol and water, which is equal to 89 mole% ethanol or 95 weight% ethanol.


  • [Snapshot]
  • [Snapshot]
  • [Snapshot]
    • Share:

Embed Interactive Demonstration New!

Just copy and paste this snippet of JavaScript code into your website or blog to put the live Demonstration on your site. More details »

Files require Wolfram CDF Player or Mathematica.

Mathematica »
The #1 tool for creating Demonstrations
and anything technical.
Wolfram|Alpha »
Explore anything with the first
computational knowledge engine.
MathWorld »
The web's most extensive
mathematics resource.
Course Assistant Apps »
An app for every course—
right in the palm of your hand.
Wolfram Blog »
Read our views on math,
science, and technology.
Computable Document Format »
The format that makes Demonstrations
(and any information) easy to share and
interact with.
STEM Initiative »
Programs & resources for
educators, schools & students.
Computerbasedmath.org »
Join the initiative for modernizing
math education.
Step-by-Step Solutions »
Walk through homework problems one step at a time, with hints to help along the way.
Wolfram Problem Generator »
Unlimited random practice problems and answers with built-in step-by-step solutions. Practice online or make a printable study sheet.
Wolfram Language »
Knowledge-based programming for everyone.
Powered by Wolfram Mathematica © 2018 Wolfram Demonstrations Project & Contributors  |  Terms of Use  |  Privacy Policy  |  RSS Give us your feedback
Note: To run this Demonstration you need Mathematica 7+ or the free Mathematica Player 7EX
Download or upgrade to Mathematica Player 7EX
I already have Mathematica Player or Mathematica 7+