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

Housam Binous
Organization: National Institute of Applied Sciences and Technology
Department: Chemical Engineering Department
URL: http://pageperso.aol.fr/binoushousam/index.html
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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 NDSolve to treat a complex system of 13 differential algebraic equations very easily. This problem is solved using the 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.

*Engineering > Chemical Engineering
*Science > Chemistry

mass balance equation, reflux ratio, activity coefficient, vapor pressure, Van Laar equation, binary mixture: water-methanol, molar holdup, system of differential algebraic equations, Vapor-Liquid equilibrium
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Batch_Column_Methanol_Water.nb (234.5 KB) - Mathematica Notebook [for Mathematica 5.0]

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