电厂燃煤飞灰粒度特征研究  

Study on the size character of fly ash in coal-fired power plant

作　　者：薛兴华[1] 王运泉[2] 肖晨生 周水良 

机构地区：[1]长江大学园艺园林学院,湖北荆州434325 [2]广州大学地理科学学院,广东广州510006 [3]广州恒运企业集团股份有限公司,广东广州510730

出　　处：《煤炭学报》2006年第5期635-639,共5页Journal of China Coal Society

摘　　要：利用MS2000激光粒度仪对电厂燃煤飞灰粒度特征以及煤质因素对飞灰粒度分布的影响进行了研究.结果表明,煤粒燃烧破裂使>75μm的飞灰减少,而<75μm的飞灰增加,残焦燃烧破裂程度不同使得飞灰粒度分布的变化加大;煤岩相特征较工业分析指标对飞灰粒度分布特征影响大,特别是镜质组和反射率,但高位发热量对残焦破裂过程的影响也不容忽视.飞灰粒度特性综合指数表明,煤质主要影响到粗粒度飞灰的形成及飞灰的体积平均粒度,而对细粒度飞灰的形成影响很小.Utilizing Master Sizer 2000 （ MS2000）, studied the size distribution of fly ash （FA） and the affection of coal quality on it. The results show that combustion and fragmentation cause the increase of FA larger than 75 μm and the decrease of FA smaller than 75 μm. Coal petrologica characteristics, especially the vitrinite content and its reflection, make a more inportant effect on the FA size distribution than ultimate analysis, but the affection of net calorific value as received basis on the fragmentation of char can not be ignored. Index based on coal properties shows that coal properties principally affect the forming of big FA and the average volume size of FA, and less to small FA.

关 键 词：飞灰 粒度 破裂特性 指数 

分 类 号：TQ534[化学工程—煤化学工程]