Oxidative Pyrolysis of a Large Wood Particle: Effects of Oxygen Concentration and of Particle Size

Abstract : In this study, the oxidative pyrolysis of large pine wood particles was analysed using a Macro-ThermoGravimetric apparatus (Macro-TGA). The effects of the concentration of oxygen in the surrounding gas and of particle size were investigated. Three different oxygen concentrations (0 %, 10 % and 20 %) and three sizes of cylindrical pine wood samples (4 mm, 8 mm and 12 mm in diameter) were tested at a heating rate of 20 degrees C/min. The results showed that oxygen had a strong influence on pyrolysis behaviour. We observed that the peak of wood pyrolysis was higher and appeared at a lower temperature with an increase in the oxygen concentration. When the size of the particle was increased, there was a short delay in DTG curve. But generally speaking, particle size had no significant influence on oxidative pyrolysis at this low heating rate. With the 4 mm diameter particles and at a heating rate of 20 degrees C/min, degradation behaviours (TG and DTG curves) were similar and resembled intrinsic degradation behaviours: heat and mass transfer phenomena did not limit the process.
Type de document :
Communication dans un congrès
Ranzi, E and KohseHoinghaus, K. ICONBM: INTERNATIONAL CONFERENCE ON BIOMASS, PTS 1 AND 2, May 2014, Florence, Italy. AIDIC SERVIZI SRL, Chemical Engineering Transactions, 37, p.73-78, 2014, 〈10.3303/CET1437013〉
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https://hal.archives-ouvertes.fr/hal-01625033
Contributeur : Imt Mines Albi Ecole Nationale Supérieure Des Mines d'Albi-Carmaux <>
Soumis le : vendredi 27 octobre 2017 - 09:43:54
Dernière modification le : jeudi 3 janvier 2019 - 09:54:11

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Elias Daouk, Laurent Steene, Frederic Paviet, Sylvain Salvador. Oxidative Pyrolysis of a Large Wood Particle: Effects of Oxygen Concentration and of Particle Size. Ranzi, E and KohseHoinghaus, K. ICONBM: INTERNATIONAL CONFERENCE ON BIOMASS, PTS 1 AND 2, May 2014, Florence, Italy. AIDIC SERVIZI SRL, Chemical Engineering Transactions, 37, p.73-78, 2014, 〈10.3303/CET1437013〉. 〈hal-01625033〉

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