流化床燃烧煤的成灰磨耗特性

循环流化床燃烧条件下，煤的成灰磨耗特性是影响床的流化特性和锅炉整体性能的重要因素之一。将煤在床内爆裂和燃尽引起的尺寸减损和颗粒的磨耗视为相互独立的两个过程，利用静态燃烧然后冷态流化的方法，得到成灰与磨耗参数，提出煤种的本征成灰数据概念，认为煤种的本征成灰数据应视为只与煤种本身特性有关的燃料特性参数，建议将其作为设计循环流化床锅炉的燃料数据。

Investigation on the Ash Size Distribution and Attrition During the Coal Combustion in Fluidized Bed

The character of ash formation and its attrition under the condition of circulating fluidized bed (CFB) combustion is one of the key factors that affect not only the fluidization character but also the CFB boiler performance. It is suggested that the fragmentation process would have no effect on the particle attrition, which is much different from the previous work. Then the experimental method of coal static combustion and ash cold fluidizing is proposed to get the intrinsic ash formation data and attrition data. For the first time, a new concept of intrinsic ash formation is proposed. The intrinsic ash formation data is only dependent on the fuel itself, which should be considered as a parameter of fuel during the CFB boiler design.