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目前我国的循环流化床锅炉大多采用8mm以下宽呼分的煤位，这不同于国外循环流化床锅炉使用的窄筛分物料，这种宽筛分煤位中的细粉部分和大领位部分在流化床内的运动特性和着火燃饶有不同的表现。本文从空气动力特性和燃烧特性两方面进行了初步的理论探讨，并由此对循环流化床的设计和运行提出了建议．
At present, most of circulating fluidized bed boilers in China adopt the coal width of 8mm wide and broadly divided, which is different from the narrow screen material used by foreign circulating fluidized bed boilers. The fine powder part and the large collar Part of the fluidized bed in the dynamic characteristics of burning and burning have different performance. In this paper, a preliminary theoretical discussion is made on both aerodynamic characteristics and combustion characteristics, and suggestions are put forward on the design and operation of CFB.