Conduite de la réaction chimique en réacteurs discontinus : application aux réactions catalytiques homogènes et hétérogènes stabilité thermique

Abstract : In order to better understand and control batch reactions, two exothermic catalytic reactions are studied: a homogeneous and a heterogeneous one. The kinetics of the dichromate catalysed decomposition of the hydrogene peroxide is first studied. An experimental definition of the stability conditions is proposed and makes it possible to define the conditions avoiding any thermal runaway. A method of identification of kinetic and thermic parameters for the solid catalysed nitrobenzene hydrogenation is then developed. This method is based only on light experimental procedure involving temperature and pressure measurements. A global model is first eveloped and the parameters that control the reaction and prevent thermal runways are defined. The key parameter which conditions the thermal stability of the system is shown to be the stirring speed. Lastly, a rigorous batch model, based on the film theory, is established. It shows that the results given by the global model are coherent with those of the rigorous approach
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Nader Frikha. Conduite de la réaction chimique en réacteurs discontinus : application aux réactions catalytiques homogènes et hétérogènes stabilité thermique. Autre. Institut National Polytechnique de Lorraine, 2005. Français. ⟨NNT : 2005INPL091N⟩. ⟨tel-01752534⟩

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