http://www.cnr.it/ontology/cnr/individuo/prodotto/ID42612
Reactivation by water hydration of spent sorbent for fluidized bed combustion application: the influence of hydration time (Articolo in rivista)
- Type
- Label
- Reactivation by water hydration of spent sorbent for fluidized bed combustion application: the influence of hydration time (Articolo in rivista) (literal)
- Anno
- 2004-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1021/ie034188h (literal)
- Alternative label
Montagnaro F., Scala F., Salatino P. (2004)
Reactivation by water hydration of spent sorbent for fluidized bed combustion application: the influence of hydration time
in Industrial & engineering chemistry research
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Montagnaro F., Scala F., Salatino P. (literal)
- Pagina inizio
- Pagina fine
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
- Rivista
- Note
- ISI Web of Science (WOS) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- CNR ISTITUTO DI RICERCHE SULLA COMBUSTIONE
UNIV. NAPOLI FEDERICO II FACOLTA' DI INGEGNERIA DIP. INGEGNERIA CHIMICA (literal)
- Titolo
- Reactivation by water hydration of spent sorbent for fluidized bed combustion application: the influence of hydration time (literal)
- Abstract
- A spent limestone sorbent, generated by fluidized-bed desulfurization under simulated combustion
conditions, was reactivated by means of hydration with water at 25 °C for times ranging
from 10 min to 24 h. A bench-scale fluidized-bed reactor was used to assess sulfur uptake of the
original and reactivated sorbent. A combination of XRD, porosimetric, and computer-controlled
SEM analyses was used to assess hydration-induced microstructural and chemical modifications
of sorbent samples. The ultimate degree of calcium conversion of the exhausted sorbent was
28%. The ultimate degrees of calcium conversion of reactivated/resulfated sorbents ranged from
45% to 53%. A nonmonotonic influence of the hydration time on the ultimate sulfur uptake of
reactivated sorbents was observed, which was explained in the light of the competition between
the following phenomena: particle swelling, change of pore volume, sulfur redistribution, particle
attrition/fragmentation. Two optimal hydration times were found, one on the order of minutes
and the other on the order of some hours. Samples hydrated for shorter time showed less
propensity to attrition/fragmentation than samples hydrated for long times. (literal)
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