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Separation of a water-methanol mixture using a four stage batch distillation column

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Separation of a water-methanol mixture using a four stage batch distillation column

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27 Feb 2006 (Updated )

Computes mole fractions and temperatures in the still, condenser and plates

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We use a batch column with four theoretical plates to separate a binary mixture of water and methanol at 1 bar. Temperature and concentration profiles versus time are obtained for a reflux ratio equal to 10. In addition, the total moles in the still and distillate are plotted versus time. This demo shows how one can use ode15s to treat a complex system of 13 differential algebraic equations very easily. This problem is solve using Berkeley-Madonna Language in the reference indicated below. We get the same results as Ingham et al. (2000).

Reference: Example BUBBLE in page 559 by J. Ingham, I. J. Dunn, E. Heinzle and J. E. Prenosil, Chemical Engineering Dynamics, Wiley-VCH, Weinheim, Second Edition, 2000.

For a similar treatment using Mathematica 5.2, please visit:

http://library.wolfram.com/infocenter/MathSource/5929/

A Mathematica demonstration using version 6.0 is available at:

http://demonstrations.wolfram.com/StudyOfAFourStageBatchDistillationColumn/

MATLAB release MATLAB 7.0.1 (R14SP1)
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Comments and Ratings (13)
21 Oct 2014 mamoon  
25 Jun 2013 Deepak Ingole

Hi,
I am working on Binary Batch Distillation Column of Ethanol & Water. I have plant with
1. Still
2. Packed Column
3. Condenser
4. Reflux Drum
5. Three Way Valve.
I have to control
1. Temperature in Still
2. Condenser Cooling Water Flow
3. Reflux Ratio
Can you please help me getting the equation for the same. Please suggest me some reference where I will get the equations.

Thanks!

10 May 2013 ahmed hashim  
07 May 2007 kelvind zheng  
11 Oct 2006 Sanjeev Guddad  
07 Sep 2006 Agustin Galetti  
09 Aug 2006 Anwaruddin Hisyam

i'm now working on batch distillation, but for multicomponent separation. So far, I'm trying to use MS Excel with VBA. And thanks a lot, this is a useful information.

27 Jun 2006 Sanjeev Guddad

good information

10 Mar 2006 jatin vadher

i m workinf my project with methanol water system so send me column design

10 Mar 2006 jatin vadher  
04 Mar 2006 Vhahangwele Lilimu

would you please send a distillation column design of separating ethanol using water

04 Mar 2006 Vhahangwele Lilimu

would you please send a distillation column design of separating ethanol using water

27 Feb 2006 John D'Errico

The comments are reasonable in the code, although I'd argue that more comments in a context like this are always better. The figues could use axis labels to indicate what is shown, possibly a legend for figures 1 & 2. In an educational setting, I'd look for some note of why a stiff ode solver is used - I.e., does the author expect stiff behavior? (Yes, I am picky. I think think even the best code leaves room to be better.)

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