摘要
比较了不同球形度概念对片状化石燃料的描述效果,研究了片状化石燃料球形度变 化对其流态化特征的影响.分析了Krumbein球形度为0.1-0.4的京西无烟煤在一台50MW循 环流化床锅炉上表现出来的特殊现象,如运行床温和炉膛压力大幅度波动、依靠排放冷渣保 持稳定运行,揭示了这些现象发生的原因.
The effectiveness of classical sphericity and Krumbein sphericity was compared to discribe chip-shaped fossil fuel, and the influence of sphericity on fiuidization characteristics was studied. Some special pheno-mina in a 50 MW circulating fluidized bed boiler using an anthracit with Krumbein sphericities of 0.2-0.4 were discussed such as obvious fluctuations of dense phase temperature and furnace pressure as well as draining cold ash during operation, which can be explained by particle mophology.
出处
《北京科技大学学报》
EI
CAS
CSCD
北大核心
2005年第2期159-163,共5页
Journal of University of Science and Technology Beijing
基金
国家自然科学基金资助项目(No.50476082)
关键词
流化床
燃烧
颗粒形貌
球形度
形状因子
fluidized bed
combustion
particle morphology
sphericity
shape index
