The influence of reactivation by hydration of spent SO2 sorbents on their impact fragmentation in fluidized bed combustors (Articolo in rivista)

Type

• Prodotto della ricerca (Classe)
• Articolo in rivista (Classe)

Label

• The influence of reactivation by hydration of spent SO2 sorbents on their impact fragmentation in fluidized bed combustors (Articolo in rivista) (literal)

Anno

• 2010-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

• 10.1016/j.cej.2010.06.042 (literal)

Alternative label

• Montagnaro, F; Salatino, P; Santoro, L, Scala F. (2010)
  The influence of reactivation by hydration of spent SO2 sorbents on their impact fragmentation in fluidized bed combustors
  in Chemical engineering journal ( Print)
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Montagnaro, F; Salatino, P; Santoro, L, Scala F. (literal)

Pagina inizio

• 1067 (literal)

Pagina fine

• 1074 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 162 (literal)

Rivista

• Chemical engineering journal (Rivista)

Note

• ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• Dipartimento di Chimica, Università degli Studi di Napoli Federico II Istituto di Ricerche sulla Combustione, Consiglio Nazionale delle Ricerche Dipartimento di Ingegneria Chimica, Università degli Studi di Napoli Federico II (literal)

Titolo

• The influence of reactivation by hydration of spent SO2 sorbents on their impact fragmentation in fluidized bed combustors (literal)

Abstract

• The relationship between calcination/sulphation and attrition/fragmentation of calcium-based SO2 sorbents in fluidized bed (FB) combustors has long been recognized, but only recently did attrition by impact receive due consideration. There is limited available information in the literature on the propensity of exhausted calcium-based sorbents to undergo high-velocity impact fragmentation after they have been reactivated by steam or water hydration. The present study addresses the relationship between hydration-induced reactivation of spent Ca-based sorbents and attrition by impact loading. The sorbent used in this work (a high-calcium Italian limestone) was pre-processed (sulphation at 850 oC in a lab-scale FB, water hydration for 3 h at 25 oC in a thermostatic bath, steam hydration for 3 h at 250 oC in a tubular reactor, dehydration at 850 oC in the FB) and subjected to impact tests in a purposely designed impact test rig, operated with particle impact velocities ranging from 4 to 45ms-1. The particle size distribution of the debris was worked out to define a fragmentation index and a probability density function of the size of generated fragments. The effect of hydration/reactivation of spent sorbent on propensity to undergo impact fragmentation was assessed, and results are discussed in the light of a mechanistic framework. It was observed that the prevailing particle breakage pattern was splitting/chipping for water-reactivated samples, disintegration for steam-reactivated samples. Characterization of sorbent microstructure by porosimetry and microscopic investigation on the reactivated samples highlighted a clear relationship between the extent of fragmentation and the cumulative specific volume of mesopores. (literal)

Prodotto di

• Studio dei processi e tecnologie di combustione a basso impatto ambientale (ET.P01.003.001) (Modulo)
• Sviluppo di tecnologie di gasificazione con riguardo anche ai problemi di sicurezza e impatto ambientale (ET.P01.003.002) (Modulo)
• Istituto di ricerche sulla combustione (IRC) (Istituto)

Autore CNR

• PIERO SALATINO (Unità di personale interno)
• FABRIZIO SCALA (Persona)

Insieme di parole chiave

• Keywords of "The influence of reactivation by hydration of spent SO2 sorbents on their impact fragmentation in fluidized bed combustors" (Insieme di parole chiave)

Incoming links:

Autore CNR di

• FABRIZIO SCALA (Persona)
• PIERO SALATINO (Unità di personale interno)

Prodotto

• Istituto di ricerche sulla combustione (IRC) (Istituto)
• Studio dei processi e tecnologie di combustione a basso impatto ambientale (ET.P01.003.001) (Modulo)
• Sviluppo di tecnologie di gasificazione con riguardo anche ai problemi di sicurezza e impatto ambientale (ET.P01.003.002) (Modulo)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Chemical engineering journal (Rivista)

Insieme di parole chiave di

• Keywords of "The influence of reactivation by hydration of spent SO2 sorbents on their impact fragmentation in fluidized bed combustors" (Insieme di parole chiave)