Datensatz

Zusammenfassung

Residue curve maps of propyl acetate synthesis reaction in the batch reactive distillation process are studied. In order to adapt the model equations of residue curve maps to a practicable heating policy, the theoretical analysis and experimental measurements in this paper are carried out isothermally instead of the autonomous heat policy first introduced by Venimadhavan et al. (1994). The chemical equilibrium constant of this reaction is determined by experiments to be 20 within the temperature range 80 °C ~ 110 °C. Using this equilibrium constant, the RCMs predicted by simulation are in good agreement with the experimental measurements. The results show that there is an unstable node branch emerging from the propyl acetate-water edge, moving toward the chemical equilibrium surface with the increasing Damköhler number (Da), and eventually reaches the quaternary reactive azeotrope when Da approaches infinity. Residue curves are measured with initial compositions around the unstable node, and thus the results verify the existence of this reactive azeotrope. Further bifurcation analysis shows that different heat policies will influence the singular points and topology of kinetically controlled RCMs, but not the cases when Da = 0 or Da approaches infinity. © 2005 Elsevier B.V. All rights reserved. [accessed 2013 November 27th]