摘要
采用英国Malvern公司的MAM5004型激光粒度分析仪测定了合山、晋城各4种不同粒径煤样的粒度分布.采用美国LECO公司的MAC-500型工业分析仪分别测得各煤样的固定碳及挥发分含量.根据实验数据研究了煤粉颗粒的分形特征及其煤粉粒度分布分形维数与其固定碳及挥发分含量的关系,提出了基于考虑能量、环境、安全的煤粉燃烧锅炉的煤粉经济细度新概念.煤粉的分形维数可以反映煤粉的物理结构特性,并提供反映煤粉燃烧特性与炉内的燃烧状况的信息.煤粉颗粒的分形维数愈大,细度愈小,愈均匀,煤粉燃烧性能愈好,超细化煤粉燃烧技术是一种极具潜力的煤粉洁净高效燃烧新技术.
The pulverized coals of four different particle sizes, which are taken from Heshan and Jincheng respectively under investigation. Particle sizes of pulverized coals are analyzed by Malwern MAM5004 Laser Mastersizer made in United Kingdom and LECO MAC 500 proximate analysis apparatus made in United States analyzes fixed carbon and volatile. Fractal dimension and its relation with fixed carbon and volatile have been studied. Bring up a new concept of economic granule of coal powder in coal fired thermal power plant. The results show that the bigger the fractal dimension is, the more finesse and uniform is. Super fine coal particle combustion is new pulverized coal combustion technology of clean and high efficiency.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
2003年第4期414-418,共5页
Journal of China Coal Society
基金
煤燃烧国家重点实验室开放基金(9803)
国家电力公司东北分公司电力工业重点科技基金项目(96HB-02)
关键词
煤粉
颗粒分布
分形
经济细度
pulverized coal
particle size distribution
fractal
economical finesse
