智能吹灰技术研究及其在超超临界锅炉中的应用  

Intelligent Soot-Blowing Technology and Its Application in Ultra-Supercritical Boilers

作　　者：陈建忠 孙晓琪 林楚伟[1] 江永[1] 陈韶华[1] CHEN Jianzhong;SUN Xiaoqi;LIN Chuwei;JIANG Yong;CHEN Shaohua(Huaneng Haimen Power Plant,Shantou 515132,Guangdong Province,China)

机构地区：[1]华能海门电厂,广东汕头515132

出　　处：《电力与能源》2020年第2期239-243,257,共6页Power & Energy

摘　　要：目前定时定量的吹灰方式会导致吹灰频繁而使蒸汽损耗过大或导致吹灰不及时而使受热面传热效率持续降低,如何实现受热面灰污的有效实时监控及吹灰优化方案的制定,成为电厂落实节能减排方针的重要研究课题。通过采用反映受热面(除屏过、水冷壁外)积灰程度的积灰热阻(以积灰因子表示),屏式过热器通过屏过在设计状态清洁度时的吸热量与当时工况下屏过吸热量的比值,获得采用污染度描述其积灰与结焦的程度,水冷壁的积灰情况通过高过的换热情况计算,采用漏光系数来表示水冷壁积灰情况的方法,并结合电厂实际运行情况制定了科学合理的智能吹灰方案。At present, the regular and quantitative soot blowing method will lead to frequent soot blowing and the consequent excessive steam loss, or lead to untimely soot blowing and the consequent continuous reduction of heat transfer efficiency on the heating surface. How to realize the effective real-time monitoring of the soot pollution on the heating surface and the optimization of soot blowing scheme has become an important research topic for the power plant to implement the policy of energy conservation and emission reduction. By adopting the soot thermal resistance(expressed by the soot formation factor) that reflects the degree of soot accumulation on the heating surface(except the screen and the water-cooled wall), and the ratio of the heat absorption during the designed cleanliness of the screen to the excess heat absorption of the screen under the current working condition, the degree of soot accumulation and coking is described by the pollution degree. The soot accumulation of the water wall is calculated by the heat transfer condition and represented by the coefficient of light leakage. A scientific and reasonable intelligent soot blowing scheme is developed based on the actual operation of Huaneng Haimen Power Plant.

关 键 词：智能吹灰 积灰因子 污染度 漏光系数 节能降耗 

分 类 号：TM621[电气工程—电力系统及自动化]