MODELLING SORBENT CONVERSION AND ATTRITION DURING FLUIDIZED BED CALCIUM LOOPING
In this paper we present a population balance model on sorbent particles in a dual fluidized bed calcium looping process for CO2 capture.The model is based on material balances on the sorbent as it is recirculated between the calciner and the carbonator.The carbonation step is modelled by assuming a well-stirred behavior in the carbonator with a suitable expression for the rate of CO2 uptake.Sorbent regeneration is modelled under the assumption of extremely fast calcination.Sorbent attrition is also considered to account for modifications in the particle size distribution during both calcination and carbonation, using purposely-derived constitutive expressions validated against results of a parallel experimental campaign.The influence of the relevant process parameters on the degree of particle carbonation, on the CO2 capture efficiency, on the rate of sorbent elutriation, and on the thermal power demand associated with sorbent regeneration in the calciner is assessed.
Fabio Montagnaro Piero Salatino Fabrizio Scala Massimo Urciuolo
Dipartimento di Scienze Chimiche,Università degli Studi di Napoli Federico Ⅱ,Complesso Universitario Dipartimento di Ingegneria Chimica,dei Materiali e della Produzione Industriale,Università degli Stu Istituto di Ricerche sulla Combustione,CNR,P.le V.Tecchio 80,80125 Naples,Italy
国际会议
The 11th International Conference on Fluidized Bed Technology(CFB-11)(第十一届流化床技术国际会议)
北京
英文
869-874
2014-05-14（万方平台首次上网日期，不代表论文的发表时间）