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Etude des équilibres de phases et des procédés de séparation de l'huile de pyrolyse pour l'optimisation des bioraffineries de 2ème génération

Abstract : Lignocellulosic biomass pyrolysis produces a large number of valuable products. Pyrolysis oil is a liquid with a great valorization potential as fuel and as chemicals. The general objective of this PhD is to study the fractionation of pyrolysis oil with a thermodynamic approach, in order to provide tools for the conception of bioraffineries. The development of a methodology and the study of a typical bio-oil were carried out, so that this work can be extrapolated to real biooils. A representative mixture of the pyrolysis oils was synthesized by grouping the compounds by chemical families. Two new pyrolysis oils biorefining flowsheets were proposed for acetol, acetic acid and furfural valorization. A solvent screening method was developed. It is based on physicochemical criteria, on dangerousness, economic and efficiency criteria. NRTL thermodynamic model parameters were regressed on experimental data measured during this thesis, together with literature data, in order to represent the phases equilibria of biooil+solvent systems.The proposed biorefinery processes were simulated with Aspen PlusTM using the developed thermodynamic models. Their economic performances were compared.
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Charlie Stephan. Etude des équilibres de phases et des procédés de séparation de l'huile de pyrolyse pour l'optimisation des bioraffineries de 2ème génération. Génie des procédés. Université Paris sciences et lettres, 2018. Français. ⟨NNT : 2018PSLEM087⟩. ⟨tel-02466340⟩

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