600MW“W”型火焰锅炉NO_x的排放特性  

NO_x emission characteristics in a 600 MW W-shaped flame boiler

作　　者：曹小玲[1] 皮正仁[1] 彭好义[2] 蒋绍坚[2] 

机构地区：[1]长沙理工大学能源与动力工程学院,湖南长沙410004 [2]中南大学能源科学与工程学院,湖南长沙410083

出　　处：《中南大学学报（自然科学版）》2013年第6期2569-2574,共6页Journal of Central South University:Science and Technology

基　　金：国家自然科学基金资助项目(51276023);湖南省高校创新平台基金资助项目(09K069);湖南省科技厅计划项目(2011GK3111)

摘　　要：以某电厂1台超临界600 MW"W"火焰锅炉NOx排放量过高为背景,对锅炉炉内燃烧过程进行数值模拟,研究不同负荷、不同煤种及不同配风方式对NOx排放量的影响。研究结果表明:不对称停运前后拱燃烧器会使NOx排放量升高,NOx排放量随燃料中N质量分数增大而增大;当前、后拱上气流或前后墙分级风量不同时,会使得NOx排放量升高。Based on the fact that a 600 MW supercritical W-shape flame boiler of one power plant has high NOx emission, numerical simulation of the boiler on combustion process was conducted to study the effect of the NOx emissions with different loads, coals and air distributions. The results show that asymmetry outage burner make NOx emission increase, N content of the fuel is the most important factor affecting NOx formation, a mound of air on the front and rear arch or a mound of grading wind on the front and rear wall causes NOx emissions increase.

关 键 词：“W”型火焰锅炉 数值模拟 NOX排放量 

分 类 号：TK224[动力工程及工程热物理—动力机械及工程]