A carregar...
Publicação
Torrefaction of Forest Residues Using a Lab-Scale Reactor
| Nome: | Descrição: | Tamanho: | Formato: | |
|---|---|---|---|---|
| 4.92 MB | Adobe PDF |
Orientador(es)
Resumo(s)
Forest residues have been gaining interest as a source of renewable fuels due to their
availability and the risks they represent for increasing forest fires. A major drawback for their
removal and processing is the cost of transportation, which can be overcome through densification
procedures, e.g., torrefaction. To optimize the torrefaction parameters, Cistus ladanifer residues
from the Portuguese forest were torrefied for 30 min in a lab-scale reactor at 250 and 350 ◦C. The
quality of the torrefied material was assessed, and its energy and mass yields were determined
through thermal analysis. The changes in morphological structure occurring during torrefaction
were analysed through scanning electron microscopy. When compared to the original biomass, the
charcoal obtained at 350 ◦C had a substantial increase in energy density accompanied by a significant
mass reduction. Increasing the mass in the reactor had a positive effect on the energy yield. For the
highest mass tested, a mass reduction of around 30% was obtained and a char with no loss in energy
content (with a cumulative heat flow (CHF) of 9.0 MJ/kg compared to 5.8 MJ/kg of the original
biomass). Modelling of the reactor allowed the analysis of the heat profile required for torrefaction.
Descrição
Palavras-chave
torrefaction biomass mass yield energy yield fuels Cistus ladanifer
Contexto Educativo
Citação
Martins, M.; Lemos, M.A.; Lemos, F.; Pereira, H. Torrefaction of Forest Residues Using a Lab-Scale Reactor. Environments 2023, 10, 202
Editora
MDPI