提升煤粉工业锅炉负荷调节能力实验研究  

Experimental Study on Improving the Load Regulation Capacity of Pulverized-coal-fired Industrial Boilers

作　　者：邢文朝 XING Wenzhao(China Coal Research Institute Company of Energy Conservation,Beijing 100013,China;National Energy Technology&Equipment Laboratory of Coal Utilization and Emission Control,Beijing 100013,China;China Coal Research Institute Company of Energy Conservation Jinan Branch,Jinan 250011,Shandong,China)

机构地区：[1]北京天地融创科技股份有限公司,北京100013 [2]国家能源煤炭高效利用与节能减排技术装备重点实验室,北京100013 [3]北京天地融创科技股份有限公司济南分公司,山东济南250011

出　　处：《工业锅炉》2024年第6期7-10,共4页Industrial Boilers

摘　　要：为研究提升煤粉工业锅炉负荷调节能力的技术措施,针对济南某热源厂80 MW煤粉工业锅炉存在的脱硝环节温度过高或者过低、排烟温度过高影响除尘器稳定运行等问题开展了实验研究,考察了不同技术措施对提升煤粉工业锅炉负荷调节能力的影响,分析了这些措施在锅炉长时间运行时脱硝SCR入口烟温、排烟温度、热效率以及NO_(x)排放变化趋势,结果表明,加装省煤器增加换热面积可有效降低脱硝SCR入口烟温和排烟温度,进而提升锅炉热效率,通过烟气旁路的方式调节换热烟气量可有效控制脱硝烟温。通过将烟温控制在催化剂最佳使用温度范围,在相同的脱硝还原剂用量时,NO_(x)排放指标下降。经过改造后的锅炉,负荷调节能力大幅提升。In order to study the technical measures to improve the load regulation capacity of pulverized-coal-fired industrial boilers,experimental research on the problems existing in the 80 MW hot water boiler of a heat source plant in Ji-nan has been conducted,such as high or low temperature in the denitrification process,and high exhaust gas temperature affecting the stable operation of the dust collector.The effects of different technical measures on improving the load regulation capacity of industrial boilers has been investigated,and the changes in SCR inlet flue gas temperature,exhaust gas temperature,thermal efficiency,and NO_(x) emissions during long-term boiler operation has been analyzed.The results indicate that adding an economizer to increase the heat exchange area can effectively reduce the inlet smoke temperature and exhaust gas temperature of the denitration SCR,thereby improving the thermal efficiency of the boiler.Adjusting the heat exchange flue gas volume through flue gas bypass can effectively control the denitrification flue gas temperature.By controlling the smoke temperature within the optimal temperature range for catalyst use,the NO_(x) emission index decreases at the same amount of denitration agent.After renovation,the boiler has significantly improved its load regulation capacity.

关 键 词：煤粉工业锅炉 负荷调节 脱硝温度 热效率 NO_(x)排放 

分 类 号：TK229.63[动力工程及工程热物理—动力机械及工程]