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Conversion thermique des goudrons provenant de la gazéification de la biomasse

Abstract : Tars are compounds limiting the optimal operation of thermochemical processes of biomass conversion. The reactions of these compounds were studied to better understand their formation, maturation and decay. The study of the decomposition of three model compounds from biomass was conducted with a jet stirred reactor. The studied compounds were anisole and guaiacol, representing the primary tars from lignin and the 5-methylfurfural, representing the primary tars from cellulose. The pyrolysis and the oxidation of these compounds were performed at atmospheric pressure, at a residence time of 2 s and at high dilution, and for a wide range of temperatures. The oxidation was carried out in stoichiometric conditions ([phi]= 1). Reaction products were quantified by gas chromatography and identified using mass spectrometry. Detailed kinetic mechanisms for the pyrolysis and oxidation (based on a combustion model for light aromatics) have been developed for each compound. Models predict well the conversion of reactants and the formation of the main products.
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Submitted on : Thursday, March 29, 2018 - 12:55:33 PM
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Milena Nowakowska. Conversion thermique des goudrons provenant de la gazéification de la biomasse. Autre. Université de Lorraine, 2014. Français. ⟨NNT : 2014LORR0092⟩. ⟨tel-01750814⟩



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