This application provides the simple McCabe-Thiele method for designing binary distillation systems.

Supports:

1. • Boiling Point Graph showing Vapour-Liquid Compositions.
   

2. • q-Line calculation from component thermodynamic properties.
   

3. • Manually defining the minimum reflux ratio.
   

4. • Loading of Data files.
   

5. • Plot of Reflux versus stages to help determine the optimal value.
   

6. • Drag and Drop graphs direct to desktop.
   

7. • Configurable printing of the 3 Graphs
   

8. • Much better checking of input data before the McCabe-Thiele graph can be plotted.
   

What’s new for version 1.1.1

1. • New data file format to allow extra data to be inputted.
   

2. • Ability to generate VLE data from constant relative volatility.
   

3. • Available on the Mac App Store.
   

4. • Ability to enter weight/weight distillate compositions.
   

5. • Ethanol/Water composition entered as a getting ‘started’ composition.
   

6. • Handles more (optional) component data.
   

7. • Exporting of all entered data into simple text based data files.
   

8. • Trackpad support for zooming.
   

9. • Data file repository to allow users to share their inputted binary compositions.
   

If sales are encouraging here are some ideas which could go into a future release:

1. • Make the application Applescript aware.
   

2. • Full Mass and Heat Balance calculation.
   

3. • Tray Efficiency Calculations.
   

4. • Editing of inputted data.
   

5. • Ponchon-Savarit Model.
   

6. • Multi-component distillation model! (Well one can dream!)...
   

Feedback and suggestions are very welcome.

If you have created a useful data set for others to benefit from please send it in and I’ll create a repository here.