Combustion characteristics of chars from raw and torrefied willow

Fisher E.M., Darvell L.I., Saddawi A., Jones J.M., Dupont Capucine, Commandre Jean-Michel, Nocquet Timothée, Salvador Sylvain. 2011. Combustion characteristics of chars from raw and torrefied willow. In : 7th US National Meeting of the Combustion Institute, Atlanta, Etats-Unis, 20-23 March 2011. Combustion Institute. s.l. : s.n., 6 p. US National Meeting of the Combustion Institute. 7, Atlanta, États-Unis, 20 Mars 2011/23 Mars 2011.

Matériel d'accompagnement : 1 diaporama (26 vues)

Résumé : There is much interest in co-firing biomass with coal in power plants. Torrefaction is a mild thermal pretreatment (T < 300°C) that improves the milling and storage properties of biomass, making it more like coal, and thus more compatible with existing power plant equipment. We use non-isothermal thermogravimetric analysis to investigate the differences in oxidative reactivities between chars prepared from torrefied and raw willow. Both high- and low-heating-rate chars are investigated. High-heating-rate chars were prepared in a drop tube furnace at a temperature of 900°C with a residence time of 2 s. Low-heating-rate chars were prepared in a crucible in a tube furnace, with a heating rate of 33°C/min, a maximum temperature of 1000 ?C, and a residence time of 1 hour at the maximum temperature. We find that torrefaction has a minimal impact on char reactivities for the low-heating-rate chars, while for the high-heating-rate case the chars prepared from raw willow are over twice as reactive as those prepared from torrefied willow.

Mots-clés Agrovoc : produit dérivé du bois, traitement thermique, carbonisation du bois, bois, pyrolyse, Salix, charbon de bois, torréfaction

Mots-clés complémentaires : Bois torréfié

Classification Agris : K50 - Technologie des produits forestiers
P06 - Sources d'énergie renouvelable

Auteurs et affiliations

• Fisher E.M., Cornell University (USA)
• Darvell L.I., University of Leeds (GBR)
• Saddawi A., University of Leeds (GBR)
• Jones J.M., University of Leeds (GBR)
• Dupont Capucine, CEA (FRA)
• Commandre Jean-Michel, CIRAD-PERSYST-UPR Biomasse-énergie (FRA) ORCID: 0000-0001-9094-7879
• Nocquet Timothée, CEA (FRA)
• Salvador Sylvain, Ecole des mines d'Albi (FRA)

Source : Cirad - Agritrop (https://agritrop.cirad.fr/560539/)

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