SORBENT INVENTORY AND PARTICLE SIZE DISTRIBUTION IN AIR-BLOWN CIRCULATING FLUIDIZED BED COMBUSTORS: THE INFLUENCE OF PARTICLE ATTRITION AND FRAGMENTATION

摘要：

Attrition and fragmentation of limestone during FB combustion of sulphur-bearing fuels have a profound influence on sorbent inventory and particle size distribution establishing at steady state in the bed. A population balance model is presented aiming at the prediction of the inventory and of the particle size distribution of sorbent particles establishing at steady state in the bed of an air-blown CFBC. The core of the model is represented by a population balance equation on sorbent particles which embodies terms expressing the extent/rate of each attrition/fragmentation process. The effect of the progress of sulphation on attrition/fragmentation is also taken into account. Constitutive equations needed to quantify attrition/fragmentation are developed on the basis of published data. Model results are presented and discussed with the aim of clarifying the influence of particle attrition/fragmentation on sorbent inventory and particle size distribution in a CFBC and on the closely related variables. Research needs and priorities within the specific field of investigation are also discussed.

关键词： SO2 capture sorbent inventory attrition fragmentation population balance

作者: Fabio Montagnaro Piero Salatino Fabrizio Scala Massimo Urciuolo

作者单位: Dipartimento di Chimica, Universitàdegli Studi di Napoli Federico II, Complesso Universitario del Mo Dipartimento di Ingegneria Chimica, Universitàdegli Studi di Napoli Federico II, Piazzale Vincenzo T Istituto di Ricerche sulla Combustione, Consiglio Nazionale delle Ricerche (CNR), Piazzale Vincenzo Dipartimento di Ingegneria Chimica, Universitàdegli Studi di Napoli Federico II, Piazzale Vincenzo T

会议类型: 国际会议

会议名称: 第20届国际流化床燃烧会议(20th International Conference on Fluidized Bed Combustion)

会议地点: 西安

会议语种:英文

页码: 966-971

在线出版日期: 2009-05-18（万方平台首次上网日期，不代表论文的发表时间）