The effect of temperature and heating rate on char properties obtained from solar pyrolysis of beech wood

Kuo Zeng 1 Doan Pham Minh 2 Daniel Gauthier 1 Elsa Weiss-Hortala 2 Ange Nzihou 2 Gilles Flamant 1
1 PROMES - Procédés, Matériaux et Energie Solaire
2 RAPSODEE - Centre de recherche d'Albi en génie des procédés des solides divisés, de l'énergie et de l'environnement
Abstract : Char samples were produced from pyrolysis in a lab-scale solar reactor. The pyrolysis of beech wood was carried out at temperatures ranging from 600 to 2000 °C, with heating rates from 5 to 450 °C/s. CHNS, scanning electron microscopy analysis, X-ray diffractometry, Brunauer–Emmett–Teller adsorption were employed to investigate the effect of temperature and heating rate on char composition and structure. The results indicated that char structure was more and more ordered with temperature increase and heating rate decrease (higher than 50 °C/s). The surface area and pore volume firstly increased with temperature and reached maximum at 1200 °C then reduced significantly at 2000 °C. Besides, they firstly increased with heating rate and then decreased slightly at heating rate of 450 °C/s when final temperature was no lower than 1200 °C. Char reactivity measured by TGA analysis was found to correlate with the evolution of char surface area and pore volume with temperature and heating rate.
Keywords : Reactivity Combined effect Beech wood Solar pyrolysis Char structure
Type de document :
Article dans une revue
Bioresource Technology, Elsevier, 2015, 182, p.114-119. 〈10.1016/j.biortech.2015.01.112〉
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https://hal-univ-perp.archives-ouvertes.fr/hal-01176348
Contributeur : Olivier Savoyat <>
Soumis le : mercredi 15 juillet 2015 - 11:52:49
Dernière modification le : jeudi 19 avril 2018 - 13:36:01

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UNIV-PERP | RAPSODEE | PROMES

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Kuo Zeng, Doan Pham Minh, Daniel Gauthier, Elsa Weiss-Hortala, Ange Nzihou, et al.. The effect of temperature and heating rate on char properties obtained from solar pyrolysis of beech wood. Bioresource Technology, Elsevier, 2015, 182, p.114-119. 〈10.1016/j.biortech.2015.01.112〉. 〈hal-01176348〉

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