基于经验的循环流化床锅炉统一热力计算模型  

The Study of Unified Thermal Calculation Model of Circulating Fluidized Bed Boiler Based on Experience

作　　者：周鸿波[1] 钟崴[1] 童水光[1] 

机构地区：[1]浙江大学化工机械研究所,浙江省杭州市310027

出　　处：《中国电机工程学报》2006年第17期94-99,共6页Proceedings of the CSEE

基　　金：浙江省科技计划项目(2006C21SA160008)

摘　　要：循环流化床锅炉尚缺少成熟的热力计算理论,文中提出了一种简化的、基于经验的计算模型。该模型用经验性的参数取值依据来弥补循环流化床理论与工程应用之间的差距。采用分区段的计算方法,有效地解决炉膛中固体颗粒浓度和受热面不均匀分布的问题;筛选出传热系数、烟气中的固体颗粒浓度、燃料的燃烧份额等需要凭经验取值的热力参数,推导了区段热量衡算的通用计算公式。以此计算模型开发的热力计算系统不受锅炉结构、分离器类型、燃料、容量等级和几何参数的限制,不仅能进行石灰石脱硫计算,而且能计算带再热蒸汽、炉膛内布置受热面和带外置式换热器等特殊结构。已在多家锅炉制造企业中用于生产实践,主要参数的计算误差小于3%。There is no mature theory of thermal calculation for CFB boiler. A simplified model based on experience was introduced, which supplied the gap between theory and industrial operation with experience parameters. By dividing furnace into sections, the model solved the problem that ash concentration and heat transfer parts were not evenly distributed. It picked out heat transfer coefficient, ash concentration in smoke, fuel percentage and other parameters based on experience, summed up general formulas for heat balance in furnace section. The thermal calculation system, developed on the basis of this model, has no restrictions from furnace structure, the type of separator, fuel and volume. Furthermore, it can calculate limestone-desulfurization, reheater, heat transfer parts in furnace and external heat exchanger. The system has been put into industrial operation, and calculation error of main parameter is less than 3%.

关 键 词：动力机械工程 循环流化床锅炉 锅炉设计 热力计算 

分 类 号：TK212[动力工程及工程热物理—动力机械及工程]