RT Journal Article
T1 Influence of ashes in the use of forest biomass as source of energy
A1 Rodríguez Somoza, Juan Luis
A1 Álvarez Bermúdez, Xana
A1 Valero Gutiérrez del Olmo, Enrique Maria
A1 Ortíz Torres, Luis
A1 Torre Rodríguez, Natalia de la
A1 Acuña Alonso, Carolina
K1 3312.13 Tecnología de la Madera
AB One of the main challenges using biofuels, such as pellets or wood chips in domestic boilers, is the slagging and fouling risks associated to the process, which could damage the boiler and limit its efficiency. The prediction of sintering and slagging in biomass combustion is essential to establish biofuel quality standards, and minimize their harmful effects. In this work, we analysed the chemical composition of 40 woodchips samples from different genera and origins in order to predict slagging. We studied two indexes of deposition (%B and the NaK/B) in order to limit sintering of biomass ashes. In addition, a new threshold classification was proposed for ratio-slag viscosity index. These indexes were validated with two different tests: a qualitative test, and a quantitative test (Bioslag). Our results showed that the species chosen did not have an impact in slagging and sintering. However, biomass with high concentrations of SiO2 and tree bark showed high risk of slagging. On the other hand, high CaO concentrations showed a low slagging risk. The results obtained from the validation tests showed similar results to the ones obtained from the indexes. It can be concluded that the %B and NaK/B indexes show good potential and should be considered as tools for predicting slagging in woody and herbaceous biomass.
PB Fuel
SN 00162361
YR 2021
FD 2021-01-01
LK http://hdl.handle.net/11093/4344
UL http://hdl.handle.net/11093/4344
LA eng
NO Fuel, 283: 119256 (2021)
DS Investigo
RD 10-sep-2024