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Author(s): N. Tomé
N. Rangel
C. Pinho
Title: Reactivity of Biomass Chars from Mozambique in a Fluidized Bed Combustor
Issue Date: 2013
Abstract: Wood samples of Mozambican origin were carbonized in a flow of nitrogen attemperature of 850 ºC. The obtained vegetable chars were crushed and burned in batches of 1.5g in a bubbling fluidized bed (at 1.5Umf) to obtain the kinetic and mass transfer data. Batches ofchar particles with an average diameter in the range 1.6-3.6 mm were tested in a bed of silicasand with 283 μm average diameter, for the range of temperatures 750-900 ºC. The resultsshowed that the fragmentation phenomena were not relevant and no effect of bed agglomerationwas observed for the tested chars, in spite of their higher reactivity when compared with otherwood chars. Sherwood numbers and kinetic constants of the chemical reaction were determinedand are presented as correlations, which can be used to predict these parameters both for designand for CFD-based simulations purposes.
Document Type: Artigo em Revista Científica Internacional
Rights: restrictedAccess
Appears in Collections:FEUP - Artigo em Revista Científica Internacional

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