广东电力2016，Vol.29Issue(7)：16-23,8.DOI:10.3969/j.issn.1007-290X.2016.07.004
墙式分离燃尽风对660 MW切圆燃烧锅炉烟温偏差影响的数值模拟研究
Numerical Study of Effect of Wall Separated Over-fire Air on Flue Gas Temperature Deviation in 660 MW Tangentially Coal-fired Boiler
摘要
Abstract
To study the effect of wall separated over-fire air (SOFA)on flue gas temperature deviation,numerical simulation on furnace flow,combustion and pollutant emission under multiple loading conditions for a 660 MW tangentially coal-fired boiler was carried out. The effect of SOFA air rate and swinging angle onthe flue gas temperature deviation was investigated carefully. The simulation results indicate that increase of air rate of SOFA causes sectional temperature unevenness coeffi-cient of smokestack at the furnace exit and sectional flue gas temperature deviation at the furnace exit both decrease and makes for reducing NOx emission without large impact on burn-off rate of pulverized coal. Meanwhile,level swinging angle of SOFA nozzle extends and SOFA nozzle swings downward,which are both good to reduce flue gas temperature deviation of the boiler.关键词
锅炉/分离燃尽风/摆角方式/风量配比/烟温偏差/数值模拟Key words
boiler/separated over-fire air(SOFA)/swinging angle/air flow rate/flue gas deviation/numerical simulation分类
能源科技引用本文复制引用
陈前明,方庆艳,张成,陈刚..墙式分离燃尽风对660 MW切圆燃烧锅炉烟温偏差影响的数值模拟研究[J].广东电力,2016,29(7):16-23,8.基金项目
国家自然科学基金资助项目(51006042) （51006042）
广东省省部产学研结合项目(2013B090500008) （2013B090500008）
