Étude expérimentale et modélisation dynamique d'un réacteur catalytique modulaire pour l'hydrogénation du CO2 en méthane

Abstract : This work is within the Power-to-Gas framework, which aims to store the electrical energy surpluses from renewable energy in chemicals, here the methane. The intermittency of the electrical production requires the methanation system to have a certain level of flexibility with respect to temporal changes of operational conditions. In this context, the work carried out during this thesis is dedicated to the study of the dynamic behavior of a catalytic fixed-bed heat-exchanger methanation reactor. A reactor-exchanger highly equipped with thermocouples is designed and is used for the experimental study of the performances and the dynamics behavior of such a reactor. In particular, phenomena of thermal wave fronts, overshoot and inverse responses are found. The hydrodynamic and thermal parameters of the bed have been experimentally characterized. Modeling of the reactor-exchanger is also established and simulations of the reactor behavior are done. The experimental results are compared with the simulation results, allowing the precise analysis of the behaviors observed in the reactor
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Rasmey Try. Étude expérimentale et modélisation dynamique d'un réacteur catalytique modulaire pour l'hydrogénation du CO2 en méthane. Energie électrique. Université de Lyon, 2018. Français. ⟨NNT : 2018LYSE1038⟩. ⟨tel-01807801⟩

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