Fluidized bed desulfurization using lime obtained after slow calcination of limestone particles (Articolo in rivista)

Type
Label
  • Fluidized bed desulfurization using lime obtained after slow calcination of limestone particles (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.fuel.2012.11.072 (literal)
Alternative label
  • F. Scala, R. Chirone, P. Meloni, G. Carcangiu, M. Manca, G. Mulas, A. Mulas (2013)
    Fluidized bed desulfurization using lime obtained after slow calcination of limestone particles
    in Fuel (Guildf.)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • F. Scala, R. Chirone, P. Meloni, G. Carcangiu, M. Manca, G. Mulas, A. Mulas (literal)
Pagina inizio
  • 99 (literal)
Pagina fine
  • 105 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 114 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Istituto di Ricerche sulla Combustione - CNR Università di Cagliari, Dipartimento di Ingegneria Chimica e Materiali Istituto di Geoingegneria e Tecnologie Ambientali - CNR Calcidrata S.p.A (literal)
Titolo
  • Fluidized bed desulfurization using lime obtained after slow calcination of limestone particles (literal)
Abstract
  • In this work we have tested the fluidized bed desulfurization performance of lime particles obtained by means of a limestone slow calcination pre-treatment technique. This performance was compared to that of the parent untreated limestone particles. The occurrence of particle fragmentation and attrition during the fluidized bed operation was also investigated with a specific test protocol for both raw limestone and pre-treated lime sorbent. Two particle size ranges were tested under typical fluidized bed coal combustion conditions (T = 850°C; SO2 = 1800 ppm). The experiments were complemented by porosimetric and morphological (SEM) analyses of the sorbent. Results showed that limestone pre-treatment was able to preserve the high mechanical strength of the parent particles as opposed to the fast in situ calcination typically active in fluidized beds. In addition, a high calcium reactivity and final conversion were observed for the pre-treated lime particles, leading to a SO2 capture capacity per unit mass of sorbent much higher than that obtained with the untreated limestone. Simple economic evaluations suggest that the use of the pre-treated lime in place of limestone can involve significant economies for fluidized bed coal combustor operators. (literal)
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