大型循环流化床锅炉燃烧系统数学模拟  

Modeling on the Combustion System of Large-Scale Circulating Fluidized Bed Boiler

作　　者：徐志[1] 王勤辉[1] 骆仲泱 倪明江[1] 

机构地区：[1]浙江大学能源清洁利用国家重点实验室,浙江杭州310027

出　　处：《工程热物理学报》2011年第4期711-714,共4页Journal of Engineering Thermophysics

基　　金：国家科技支撑计划课题(No.2006BAA03B01-06)

摘　　要：数学模型是研究和发展大型循环流化床锅炉的重要方法。在浙江大学提出的适用于中小型循环流化床锅炉的整体数学模型的基础上,建立了适用于大型循环流化床锅炉的数学模型。模型采用了基于环核结构的流体动力学模型,并考虑了宽筛分燃料颗粒所经历的破碎、燃烧等过程。模拟了国内一台300MWe循环流化床锅炉,模拟计算结果与锅炉的运行测量值基本吻合。Mathematical model is an important method in the study and the development of large-scale circulating fluidized bed（CFB） boiler.On the basis of the overall mathematical model for the medium and small scale CFB boiler,a mathematical model for large-scale CFB boiler is developed.In the modeling,the CFB riser is divided in two regions：the bottom zone in turbulent fluidization regime and the upper zone with core-annulus solids flow structure.The model takes into account the fragmentation and combustion process of the widely sized particles.The model results are in good agreement with the operational data of a 300 MWe CFB boiler.

关 键 词：循环流化床 大型锅炉 数学模型 

分 类 号：TK224[动力工程及工程热物理—动力机械及工程]