大容量燃煤锅炉低氮燃烧与脱硝系统优化运行浅析

Large-capacity Coal-fired Boiler with Low-NO_x Combustion System Optimization Run Denitrification Analysis

采用炉内低氮燃烧和烟气脱硝是降低燃煤锅炉烟气中氮氧化物的主要手段。低氮燃烧的空气分级技术在降低氮氧化物的同时对锅炉效率有不利的影响,采用电力科学研究院锅炉性能测试试验的数据,通过对采用低氮燃烧技术降低氮氧化物供电煤耗的成本增加和采用脱硝技术降低氮氧化物还原剂成本的增加对比分析,总结出低氮燃烧和脱硝系统相互配合优化运行的基本方法。在保证燃煤锅炉达标排放的同时,最大化地实现了锅炉的经济运行。

The use of low-NOxcombustion furnace and flue gas denitrification is to reduce nitrogen oxides in flue gas fired boiler primary means. Low NOxcombustion air classification technology to reduce nitrogen oxides simultaneously adversely affect boiler efficiency,the use of EPRI boiler performance test trial data,through the use of low-NOxcombustion technology to reduce nitrogen oxides increase the cost of electricity and coal consumption using technology to reduce nitrogen oxides NOxreductant increased cost comparison analysis,summed up the low NOxcombustion and denitrification systems complement each other optimal operation of the basic method. Emissions from coal-fired boilers in ensuring compliance while maximizing the realization of economic operation of the boiler.