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Co-valorisation énergie et matière des résidus agricoles par pyro-gazéification

Abstract : Agricultural-residues are interesting bioenergy resources at the territory scale of Madagascar. Their use as feedstock is essential in order to solve energy precariousness especially in rural areas. Pyro-gasification is a promising thermochemical process which converts carbonaceous materials like biomass residues into syngas. Two types of agricultural-residue from rice production were studied: rice husk (RH) and rice straw (RS). Physico-chemical and thermal analysis revealed the low heating values of these residues but with high ash concentration due to inorganic elements. Experiments performed on reactor at laboratory scale showed that thermochemical conversion produces syngas, biochar and tar. Physico-chemical characterization analysis of these products were conducted while prospective analyses of their applications were suggested. A pyro-gasification model was developed based on equilibrium and kinetic reaction methods. The simulation results are in good agreement with data from literature. Global sensitivity analysis (GSA) was carried out in order to determine key parameters for exergy efficiency optimization of pyro-gasification process.
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Contributor : Mamy Harimisa Radanielina <>
Submitted on : Saturday, October 13, 2018 - 3:12:34 PM
Last modification on : Sunday, October 25, 2020 - 6:29:55 AM
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Mamy Harimisa Radanielina. Co-valorisation énergie et matière des résidus agricoles par pyro-gazéification. Génie des procédés. Université d'Antananarivo, 2018. Français. ⟨tel-01894975⟩



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