The influence of sorbent properties and reaction conditions on attrition of limestone by impact loading in fluidized beds (Contributo in atti di convegno)

Type
Label
  • The influence of sorbent properties and reaction conditions on attrition of limestone by impact loading in fluidized beds (Contributo in atti di convegno) (literal)
Anno
  • 2009-01-01T00:00:00+01:00 (literal)
Alternative label
  • Scala F., Salatino P. (2009)
    The influence of sorbent properties and reaction conditions on attrition of limestone by impact loading in fluidized beds
    in Proc. of 20th Int. Conf. on Fluidized Bed Combustion, Xi'an, China
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Scala F., Salatino P. (literal)
Pagina inizio
  • 486 (literal)
Pagina fine
  • 491 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 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 sorbent properties and reaction conditions on attrition of limestone by impact loading in fluidized beds (literal)
Abstract
  • The extent of attrition associated with impact loading was studied for five different limestones pre-processed in fluidized bed under different reaction conditions. The experimental procedure was based on the measurement of the amount and the particle size distribution of the debris generated upon impact of sorbent samples against a target at velocities between 10 and 45 m/s. The effect of calcination, sulfation and calcination/re-carbonation on impact damage was assessed. Fragmentation by impact loading of the limestones was significant and increased with the impact velocity. Lime samples displayed the largest propensity to undergo impact damage, followed by sulfated, re-carbonated and raw limestones. Fragmentation of the sulfated samples followed a pattern typical of the failure of brittle materials. On the other hand, the behavior of lime samples better conformed to a disintegration failure mode, with extensive generation of very fine fragments. Raw limestone and re-carbonated lime samples followed either of the two patterns depending on the sorbent nature. The extent of particle fragmentation increased after multiple impacts, but the incremental amount of fragments generated upon one impact decreased with the number of successive impacts. (literal)
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