超临界煤粉锅炉炉膛出口受热面结渣特性分析  

Analysis on Slagging Characteristic of Heating Surfaces at Furnace Outlet of Supercritical Pulverized Coal-Fired Boiler

作　　者：王赫 赵斌 王琪霖 罗子莹 魏志强 韩承煜 WANG He;ZHAO Bin;WANG Qilin;LUO Ziying;WEI Zhiqiang;HAN Chengyu(China Energy Science and Technology Research Institute Co.,Ltd.,Shenyang Branch,Shenyang 110100,China;College of Energy and Power Engineering,Changsha University of Science and Technology,Changsha 410114,China)

机构地区：[1]国家能源集团科学技术研究院有限公司沈阳分公司,辽宁沈阳110100 [2]长沙理工大学能源与动力工程学院,湖南长沙410114

出　　处：《锅炉技术》2023年第3期10-15,共6页Boiler Technology

基　　金：国家重点研发计划资助项目(2016YFB0600201)。

摘　　要：针对某600 MW超临界煤粉锅炉炉膛出口屏式过热器和末级再热器严重结渣问题,综合分析了入炉煤种结渣综合判别指数、炉内空气动力场分布、烟气还原性气氛对炉膛出口受热面结渣特性的影响。结果表明:入炉煤种结渣综合判别指数影响较大,是该锅炉受热面结渣的重要原因;而提出的入炉煤种掺烧、燃烧优化调整等运行控制方法,可为同类锅炉预防受热面结渣提供解决方案。In view of the serious slagging problem of the platen superheater and the final reheater at the furnace outlet of a 600 MW supercritical pulverized coal-fired boiler,the influence of the comprehensive discrimination index for slagging of the burning coal,the distribution of aerodynamic field in the furnace and the reducing atmosphere of flue gas on the slagging characteristics of the heating surface at the furnace outlet were comprehensively analyzed.The results show that the comprehensive discrimination index for slagging of the burning coal is large,which is an important reason for slagging on the heating surface of the boiler.The proposed operation control methods such as co-combustion of the other coals and combustion optimization adjustment can provide solutions for preventing slagging on the heating surfaces of similar boilers.

关 键 词：超临界锅炉 旋流燃烧器 炉膛出口受热面 壁温监测 结渣综合判别指数R_(z) 

分 类 号：TK223.3[动力工程及工程热物理—动力机械及工程]