摘要
以循环流化床锅炉飞灰为研究对象,分析了飞灰的粒径和含碳量分布,并利用扫描电子显微镜观察了不同粒径飞灰的微观形貌。结果表明,循环流化床锅炉飞灰中碳的质量分数最高的区域分布在38-58μm、90-120μm和大于150μm的粒径段,具有峰值特征;且循环流化床锅炉焦炭颗粒的燃尽与燃烧室温度、颗粒的孔隙结构及旋风分离器的性能关系密切。
Taking CFB fly-ash as research object,this paper analyzed the size distribution and carbon content distribution of fly-ash,and characterized the microscopic morphology of the fly-ash of different size with scanning electron microscope.The results show that CFB fly-ash with highest carbon content lies in the range of 38~58 μm,90~120 μm,and 150 μm,exhibiting peah distribution;the burn-out of char pariticles in CFB is closely related to combustion chamber temperature,particle porosity and cyclone performance.
出处
《太原理工大学学报》
CAS
北大核心
2010年第2期194-196,共3页
Journal of Taiyuan University of Technology
关键词
循环流化床锅炉
焦炭颗粒
飞灰
燃烧机理
char
fly-ash
fractal
pore structure
circulating fluidized bed（CFB）
