中国电机工程学报2018，Vol.38Issue(2)：348-355,8.DOI:10.13334/j.0258-8013.pcsee.171657
超/超临界循环流化床锅炉整体数值模型
Integrated Numerical Model for Ultra/Supercritical CFB Boilers
摘要
Abstract
This work introduced a newly developed integrated numerical model for ultra/supercritical CFB boilers,which can predict the combustion,temperature profile,heat transfer,emissions with considering the heat transfer coupling between the thermal hydraulics in wall-tube and furnace in a large-scale ultra/supercritical CFB boiler.Based on the gas-solid hydrodynamics results computed by the Euler-Euler model and EMMS drag model,the coal combustion is taken into consideration by species reaction model,which consists of evaporation,devolatilization,char combustion,gas homogeneous reaction and pollutants emission.In the model,heat transfer process between heat-exchange surfaces and furnace is based on the cluster renewal model and the discrete ordinate radiation model.To consider the boiler operating under supercriticai condition,the thermal hydraulics in the membrane wall tube is coupled with wall heat transfer.This integrated numerical model was successfully applied to a 350MWe supercritical boiler.The reasonable 3D distributions of gas-solid suspension density,temperature profile in furnace and heat flux on waterwall were obtained.关键词
循环流化床/超/超临界/燃烧模拟/数值模型Key words
circulating fluidized bed(CFB)/ultra/supercritical/combustion simulation/numerical model分类
能源科技引用本文复制引用
许霖杰,程乐鸣,季杰强,王勤辉,聂立,宋畅,骆仲泱..超/超临界循环流化床锅炉整体数值模型[J].中国电机工程学报,2018,38(2):348-355,8.基金项目
十三五国家重点研发计划项目(2016YFB0600202-2).Key Project of the National Research Program of China (2016YFB0600202-2). （2016YFB0600202-2）
