Residue Curve Computation for Methyl Tert-Butyl Ether (MTBE) Chemistry

The following reaction is used to produce methyl tert-butyl ether (MTBE): isobutene+MeOH ⇄ MTBE. The reacting mixture contains -butane, an inert component, in addition to methanol (MeOH), isobutene, and MTBE.
Azeotropes between MeOH and isobutene and MTBE and MeOH are reacted away. The azeotrope, A, between MeOH and -butane is shown in the figure with a red dot. This azeotrope is an unstable node and contains 2.21 mole% MeOH.
This Demonstration plots the residue curve passing through a user-specified location in the triangular diagram. The and axes of the figure are related to liquid phase compositions by the following relations:
and ,
where , , and are the mole fractions of isobutene, MeOH, and MTBE, respectively.
The position of pure MTBE, shown by a green dot in the diagram, is given by .


  • [Snapshot]
  • [Snapshot]
  • [Snapshot]


M. Niang and P. Mikitenko, "Analyse de Faisabilité d'une Distillation Réactive par la Méthode des Courbes de Résidus," Revue de l'Institut Français du Pétrole, 53(4), 1998 pp. 439–462.
    • 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+