Extended rate-based model validation for polyester synthesis by reactive distillation

Mayank Shah*, Anton A. Kiss, Edwin Zondervan, André B. de Haan

*Corresponding author for this work

Research output: Contribution to journalConference articleAcademicpeer-review

3 Citations (Scopus)


The state of the art equilibrium and rate-based models for reactive distillation (RD) are well developed and have been used for a couple of decades. However, these models are not sufficient to represent a kinetically controlled process. This shortcoming is due to neglecting the effect of liquid back mixing (LBM). In earlier work,. 1 we have extended the rate-based model to account for LBM. The extended rate-based model clearly demonstrated significant improvements on the prediction of process description as compared to the traditional rate-based model. In this work, the extended rate-based model is validated experimentally in order to quantify the gained improvements. The experiments were performed for the kinetically controlled polyester synthesis in a reactive distillation pilot column. The predictions of the extended rate-based model - in terms of acid value, conversion, isomerization and saturation fraction, number-average molecular weight and degree of polymerization - are in very good agreement with the experimental data obtained from the reactive distillation pilot plant.

Original languageEnglish
Pages (from-to)1182-1186
Number of pages5
JournalComputer Aided Chemical Engineering
Publication statusPublished - 2012
Externally publishedYes
Event22nd European Symposium on Computer Aided Process Engineering, ESCAPE 2012 - University College London, London, United Kingdom
Duration: 17 Jun 201220 Jun 2012
Conference number: 22


  • Aspen ACM
  • Liquid back mixing
  • Polyester synthesis
  • Reactive distillation

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