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Modélisation, simulation et optimisation des réacteurs de production d'acroléine à partir du propylène ou du glycérol

Abstract : In this work, modeling, simulation and optimization of multitubular gas/solid fixed bed catalytic reactors for acrolein production from propylene or from glycerol are investigated. The first part of the work deals with the catalytic oxidation of propylene to acrolein. Different kinetic and reactor models are developed and the unknown parameters involved are identified from experimental measurements. A set of operating variables that maximize the yield of key products then determined using the validated reactor model. The second part of the work is devoted to the production of acrolein from glycerol. This part consists of two steps: a glycerol dehydration step and a catalyst regeneration step. A two-dimensional heterogeneous model is developed. In the catalyst regeneration step, a kinetic model enabling the identification of the concentration and initial compositions of the coke and the prediction of its combustion process is developed and identified using experimental measurements. The optimization of the operating conditions of the regeneration step is then carried out. In the dehydration step, a kinetic model that allows the simultaneous simulation of glycerol dehydration, coke formation and catalyst activity variation is developed and identified by means of experimental measurements.
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Submitted on : Tuesday, September 24, 2019 - 11:48:18 AM
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Minghai Lei. Modélisation, simulation et optimisation des réacteurs de production d'acroléine à partir du propylène ou du glycérol. Alimentation et Nutrition. Université de Lorraine, 2014. Français. ⟨NNT : 2014LORR0088⟩. ⟨tel-01750811⟩



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