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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 March 2011/23 March 2011.

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Abstract : 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. (Résumé d'auteur)

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 - Processing of forest products
P06 - Renewable energy resources

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)

Autres liens de la publication

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

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