http://www.cnr.it/ontology/cnr/individuo/prodotto/ID193167
The effect of pelletization on the attrition of wood under fluidized bed combustion and gasification conditions (Articolo in rivista)
- Type
- Label
- The effect of pelletization on the attrition of wood under fluidized bed combustion and gasification conditions (Articolo in rivista) (literal)
- Anno
- 2013-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1016/j.proci.2012.06.008 (literal)
- Alternative label
P. Ammendola, R. Chirone, G. Ruoppolo, F. Scala (2013)
The effect of pelletization on the attrition of wood under fluidized bed combustion and gasification conditions
in Proceedings of the Combustion Institute
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- P. Ammendola, R. Chirone, G. Ruoppolo, F. Scala (literal)
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- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
- Rivista
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- Istituto di Ricerche sulla Combustione - CNR (literal)
- Titolo
- The effect of pelletization on the attrition of wood under fluidized bed combustion and gasification conditions (literal)
- Abstract
- This work reports on a study, carried out in a lab-scale fluidized bed apparatus, on fragmentation and
attrition of two biomass fuels, namely wood chips and wood pellets, under both combustion and gasification
conditions. The aim was to highlight the effect of their different mechanical strength on the fuel particle
size distribution and overall carbon conversion. Primary fragmentation tests showed that for wood pellets
limited fragmentation occurred during devolatilization, with a fragmentation probability around 30% and
particle multiplication factor of 1.4. On the contrary, wood chips were subject to extensive fragmentation
as witnessed by large values of the particle multiplication factor and of the fragmentation probability.
Results of char attrition experiments carried out under inert, combustion and gasification conditions
showed that the carbon loss by elutriation is critical only during gasification, especially for the wood chips
char. A gasification-assisted attrition mechanism was proposed to explain the experimental results, similar
to the well known combustion-assisted attrition patterns already documented for coal under oxidizing conditions.
The higher mechanical strength of the wood pellets appears to be beneficial for reducing carbon
elutriation and for obtaining a higher carbon conversion. (literal)
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