干排渣系统降氮节能改造技术研究及应用  

Research and Application of Nitrogen Reduction and Energy Saving Renovation Technology for Dry Slag Removal System

作　　者：何彦鹏 刘宏举 郝峰 HE Yanpeng;LIU Hongju;HAO Feng(State Grid Handan Thermal Power Plant)

机构地区：[1]国电电力邯郸热电厂

出　　处：《上海节能》2021年第6期619-623,共5页Shanghai Energy Saving

摘　　要：电站锅炉干排渣系统由于热渣冷却风入炉风温偏低、风量大,且以“无序”的炉膛底部漏风形式直接排入炉膛,对NOx的生成浓度和锅炉热效率、炉膛稳定燃烧,尤其是低负荷稳燃都产生严重影响。通过对干排渣系统脱硝深度减排降氮节能改造技术的分析研究,将与热渣完成对流换热的冷却风送入送风机风箱,最终将冷却风由炉膛底部“无序”漏风改造为由燃烧器组织的“有序”用风,实现脱硝深度减排降氮和节能降耗。Due to the low temperature and large air volume of hot slag cooling air into the furnace,and the"disordered"air leakage at the bottom of the furnace,the dry slag removal system of power plant boiler directly discharges into the furnace,which has a serious impact on the NOx generation concentration,boiler thermal efficiency and stable combustion in the furnace,especially the stable combustion under low load.Through the analysis and Research on the deep denitration reduction and nitrogen reduction energy-saving transformation technology of dry slag removal system,the cooling air which completes convection heat exchange with hot slag is sent to the air box of forced draft fan,and finally the cooling air is transformed from"disorderly"air leakage at the bottom of furnace to"orderly"air consumption organized by burner,so as to realize deep denitration reduction and nitrogen reduction and energy saving.

关 键 词：干排渣 NOx 炉底漏风 排烟温度 锅炉效率 

分 类 号：TM621.2[电气工程—电力系统及自动化]