Modelling of homogeneously catalysed reactive distillation processes in packed columns: Experimental model validation |
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Affiliation: | 1. Paderborn University, Chair of Fluid Process Engineering, Pohlweg 55, 33098 Paderborn, Germany;2. Technical University Dresden, Institute of Power Engineering, 01069 Dresden, Germany;3. Helmholtz-Zentrum Dresden-Rossendorf, Institute of fluid dynamics, Bautzner Landstrasse 400, 01328 Dresden, Germany;4. Gubkin State University of Oil and Gas, Leninsky Prospect, 65/1, 119991 Moskau, Russland |
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Abstract: | The design of reactive distillation processes requires reliable and accurate models to significantly decrease the expensive and time consuming experimental work. Different modelling approaches of varying complexity are available in the open literature. However, only few publications exist in which the question of the optimal modelling depth is discussed for homogeneously catalysed processes. Unlike these publications, we used experimental data in the present study to compare them with simulation results using different modelling depths for homogeneous reactive distillation processes. The nonequilibrium-stage model using the Maxwell–Stefan equations, the nonequilibrium-stage model using effective diffusion coefficients, the equilibrium-stage model including reaction kinetics, and the equilibrium-stage model assuming chemical equilibrium were investigated. The homogeneously catalysed transesterification of dimethyl carbonate with ethanol, for which pilot-scale experimental data were available, was used as a test system. |
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