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Modélisation cinétique des dépôts de pyrocarbone obtenus par pyrolyse d'hydrocarbures

Abstract : This research work consists in developing a detailed homogeneous mechanism coupled to a heterogeneous mechanism describing the pyrolysis of propane and the reactions of pyrocarbon deposition at low pressure and high temperature. The experimentations, carried out in an ideal reactor, allow to deposit pyrocarbon, by propane pyrolysis, on carbon fibers. ln addition to pyrocarbon, more than 25 hydrocarbons are quantified. This work shows the influence of the operating conditions on the kinetics of deposition and the composition of the gas phase. The reactions of pyrolysis are included in a homogeneous mechanism, which depends on the kinetic data of the literature. This model is validated on our experimental results in a wide range of temperature and residence time. A flow rate analysis allows to show the importance of some radicals. A pseudo-homogeneous approach is also proposed, it consists in modeling the de position reaction like a homogeneous reaction in gas phase.
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http://docnum.univ-lorraine.fr/prive/INPL_T_2004_ZIEGLER_I.pdf
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https://hal.univ-lorraine.fr/tel-01750078
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Submitted on : Thursday, March 29, 2018 - 12:37:21 PM
Last modification on : Wednesday, March 24, 2021 - 10:38:02 AM

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  • HAL Id : tel-01750078, version 1

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Isabelle Ziegler. Modélisation cinétique des dépôts de pyrocarbone obtenus par pyrolyse d'hydrocarbures. Alimentation et Nutrition. Institut National Polytechnique de Lorraine, 2004. Français. ⟨NNT : 2004INPL045N⟩. ⟨tel-01750078⟩

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