Batch extractive distillation under constant reflux ratio

P. Lang, H. Yatim, P. Moszkowicz, M. Otterbein

Research output: Contribution to journalArticle

77 Citations (Scopus)


The process of batch extractive distillation may provide the advantages of both batch and extractive distillation. So far this process has not been applied at all probably due to its complexity. An algorithm and a computer program were developed for simulating the experiments of a batch extractive distillation process (separation of acetone and methanol on a pilot-plant column containing 32 bubble cap trays applying water as solvent, the reflux ratio is kept constant) on a PC/AT/486. For the integration of the set of nonlinear differential equations (component material balances) the Runge-Kutta method was used. For saving computation time a 2-D linear interpolation method was applied for the ternary mixture when calculating VLE. The experimental and calculated results are compared. Thqe influence of the operational parameters on the process was studied by simulation. Calculations were carried out for another (nonazeotropic, low relative volatility) mixture with a new professional program "PROSIM BATCH".

Original languageEnglish
Pages (from-to)1057-1069
Number of pages13
JournalComputers and Chemical Engineering
Issue number11-12
Publication statusPublished - Jan 1 1994


ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Computer Science Applications

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