基于分区浓淡技术的电厂锅炉低氮燃烧改造技术  

Transformation Technology of Low Nitrogen Combustion in Power Plant Boiler Based on Zonal Shade Technology

作　　者：马宏飞 史良宵 孔祥皓 MA Hongfei;SHI Liangxiao;KONG Xianghao(Inner Mongolia Electric Power Survey&Design Institute Co.,Ltd.,Hohhot,Inner Mongolia 010011,China;Chinergy Co.,Ltd.,Beijing 100080,China)

机构地区：[1]内蒙古电力勘测设计院有限责任公司,内蒙古呼和浩特010011 [2]中核能源科技有限公司,北京100080

出　　处：《自动化应用》2023年第9期261-263,共3页Automation Application

摘　　要：为提高电厂锅炉节能改造后的效果,降低NOx排放浓度、提升锅炉热效率、降低烟气中的CO浓度,达到节能降耗的目的,本文提出基于分区浓淡技术的电厂锅炉低氮燃烧改造技术。基于NOx的形成类型,本文设计了电厂锅炉炉膛纵向三区与横向双区分布;燃尽风采用4层结构,布置锅炉高位燃尽风;增设低NOx燃烧器,采用分区浓淡技术,控制锅炉燃烧过程中的NOx排放,实现低氮燃烧改造。通过实例证明,新技术的应用可以有效降低NOx的排放浓度和烟气中的CO浓度,并提升了锅炉热效率,具备更加理想的节能改造效果。In order to improve the effect of energy-saving transformation of power plant boilers,reduce the concentration of NO emission,increase the thermal efficiency of boilers,and reduce the CO concentration in flue gas,so as to save energy and reduce consumption,this paper puts forward the transformation technology of low-nitrogen combustion of power plant boilers based on zonal dense-thin technology.Based on the formation type of NOx,this paper designs the vertical three-zone and horizontal two-zone distribution of the boiler hearth in power plant.Burn-out air is a four-layer structure with high-position burnout air of the boiler.Adding a low NO.burner and using zonal enrichment technology to control the NO,emission during the combustion process of the boiler will realize the transformation of low nitrogen combustion.The application of the new technology can effectively reduce the emission concentration of NOx and CO concentration in flue gas,improve the thermal efficiency of the boiler,and have a better energy-saving transformation effect.

关 键 词：电厂锅炉 低氮燃烧 分区浓淡技术 NOx排放浓度 

分 类 号：TK229.6[动力工程及工程热物理—动力机械及工程]