Encontro de Energia no Meio Rural

Abstract

FELFLI, Felix Fonseca, LUENGO, Carlos Alberto, SOLER, Pedro Beaton et al. Mathematical modelling of wood and briquettes torrefaction.. In: ENCONTRO DE ENERGIA NO MEIO RURAL, 5., 2004, Campinas. Proceedings online... Available from: <http://www.proceedings.scielo.br/scielo.php?script=sci_arttext&pid=MSC0000000022004000200014&lng=en&nrm=abn>. Acess on: 28 Apr. 2024.

A mathematical model valid for the torrefaction of wood logs and biomass briquettes is presented. The model described both chemical and physical processes, which take place in a moist piece of wood heated at temperatures between 503 and 573K. Calibration measurements of the temperature profile and mass loss, were performed on dry cyllinders of wood samples during torrefaction in an inert atmosphere at 503, 533, and 553K. The calculated data shows a good agreement with experiments. The model can be a useful tool to estimate projecting and operating parameters for torrefaction furnaces such as minimum time of torrefaction, energy consumption and the mass yield.

Keywords : Modelling; Torrefaction; Biomass.