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Développement d’un réacteur intensifié pour la production d’acroléine

Abstract : The catalytic oxidation of propylene to acrolein is a complex and highly exothermic process carried out in the gas phase, involving consecutive and competitive reactions. To maximize the efficiency of this process, the temperature needs to be rigorously controlled and the thermal transfers must be maximized, in order to evacuate the heat released by the reactions. A millistructured reactor-exchanger has thus been chosen to intensify this process. Indeed, millimetric channels washcoated with an industrial catalyst provide intensified heat and mass transfer. To carry out this design, a preliminary study of the kinetics of these reactions was carried out and a kinetic model was determined. This model was then used to identify the optimal operating conditions of a single reactive channel (temperature, number of channels, composition), and to extrapolate these conditions for the design of an intensified reactor exchanger. The shape of the distribution and collect chambers of these reactive channels were then optimized to minimize maldistribution, maximize the acrolein yield with an optimal control of the temperature, and to ensure the safety of the process. This intensified reactor-exchanger with complex geometry was finally manufactured by 3D printing, within the French project FAIR (Additive Manufacturing for the Intensification of Reactors).
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https://hal.univ-lorraine.fr/tel-02153865
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Submitted on : Wednesday, June 12, 2019 - 3:38:08 PM
Last modification on : Monday, February 17, 2020 - 3:35:43 PM

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  • HAL Id : tel-02153865, version 1

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Mathieu Chateau. Développement d’un réacteur intensifié pour la production d’acroléine. Génie des procédés. Université de Lorraine, 2018. Français. ⟨NNT : 2018LORR0290⟩. ⟨tel-02153865⟩

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