Prediction of higher heating values (HHVs) and energy yield during torrefaction via kinetics

Lin Bo-Jhih, Silveira Edgar, Colin Baptiste, Chen Wei-Hsin, Pétrissans Anélie, Rousset Patrick, Pétrissans Mathieu. 2019. Prediction of higher heating values (HHVs) and energy yield during torrefaction via kinetics. In : Innovative solutions for energy transitions. Jinyue Yan (ed.), Hong-xing Yang (ed.), Hailong Li (ed.), Xi Chen (ed.). Amsterdam : Elsevier, 111-116. (Energy Procedia, 158) International Conference on Applied Energy (ICAE 2018). 10, Hong Kong, Chine, 22 Août 2018/25 Août 2018.

Résumé : Torrefaction is a promising process to upgrade biomass and produce solid biofuel. The purpose of this study is to predict the higher heating values (HHVs) of biomass and energy yield during torrefaction. A two-step model and a direct method are adopted to obtain the torrefaction kinetics and the prediction of elemental composition in the present study. The experiments were performed at the temperature range of 200-230 °C in a pilot-scale reactor, which can record the mass loss dynamics during the treatment. The results point out that the prediction of solid yield and elemental composition profiles are in good agreement with the experiments. The predicted HHVs are calculated from C, H, and O based on an empirical equation. As a while, the HHVs of torrefied wood are in the range of 19.85-20.71 MJ kg-1 and the energy yields are in the range of 92.3-97.4 %.

Auteurs et affiliations

• Lin Bo-Jhih, Université de Lorraine (FRA) - auteur correspondant
• Silveira Edgar, Université de Lorraine (FRA)
• Colin Baptiste, Université de Lorraine (FRA)
• Chen Wei-Hsin, National Cheng Kung University (TWN)
• Pétrissans Anélie, Université de Lorraine (FRA)
• Rousset Patrick, CIRAD-PERSYST-UPR BioWooEB (FRA)
• Pétrissans Mathieu, Université de Lorraine (FRA)

Source : Cirad-Agritrop (https://agritrop.cirad.fr/595768/)

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