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Article Dans Une Revue Fuel Année : 2013

Experimental study on fast pyrolysis of free-falling millimetric biomass particles between 800 degrees °C and 1000 degrees °C

Résumé

Pyrolysis experiments were performed between 800 degrees °C and 950 degrees °C on wood particles with diameters from 350 to 800 $\mu$m in a lab-scale drop tube reactor to reproduce surface heat flux representative of gasifiers conditions. It was shown that particle size affected the required pyrolysis time but changed neither gas/tar/char mass yields nor composition of the products at the end of pyrolysis. The initial particle size also affected the resulting char morphology: the larger the biomass particles, the more fibrous the char. Temperature had influence neither on gas/tar/char mass yields nor on gas and solid elemental composition at the end of pyrolysis, but significantly changed the yields of individual gas species. Whatever the conditions tested, a significant shrinkage could be observed on particles during pyrolysis. These experimental results confirm the strong coupling between chemical reactions, particle geometrical properties and heat transfers during pyrolysis under these conditions.
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Dates et versions

hal-01688105 , version 1 (23-03-2018)

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Li Chen, Capucine Dupont, Sylvain Salvador, Maguelone Grateau, Guillaume Boissonnet, et al.. Experimental study on fast pyrolysis of free-falling millimetric biomass particles between 800 degrees °C and 1000 degrees °C. Fuel, 2013, 106, pp.61-66. ⟨10.1016/j.fuel.2012.11.058⟩. ⟨hal-01688105⟩
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