不同煤种下循环流化床灰渣特性的试验研究

在一台 0 .5MW的循环流化床燃烧炉上对 4种不同煤种分别进行燃烧试验 ,对燃烧产生的灰渣的分析结果表明了煤种特性如挥发分、灰分和含碳量等对循环流化床燃烧过程的灰渣形成及其排放特性有很大影响 ,并获得了煤中挥发分、灰分及含碳量对底渣粒径及其含碳量、飞灰粒径及其含碳量、飞灰份额及燃烧效率等影响特性 ,对循环流化床锅炉的设计和运行有一定的指导意义。

Experiments on Ash Formation of Different Coals in Circulating Fluidized Bed Combustion

Experiments on ash formation of four different coals was completed on a 0.5MW circulating fluidized bed (CFB) combustion test rig. The results show that the coal properties such as volatile matter,ash content,and carbon content play an important role on the ash formation during circulating fluidized bed combustion. The experimental data of fly ash mass fraction,particle size distribution of bed ash and fly ash,carbon content in fly ash and bed ash of four coals with different properties were obtained. It is useful for the design and operation of circulating fluidized bed boiler.