摘要
为提高机组运行的安全性和经济性,分析造成锅炉结焦的主要原因是入炉煤灰熔点偏低,运行氧量不足,燃烧切圆直径过大,火焰刷墙,风粉配合不佳及卫燃带敷设面积过大,燃烧器布置方式与燃用煤种不相适应。解决的对策是合理掺配燃用煤种,提高入炉煤灰熔点,保持充足的运行氧量,采用合适的燃烧切圆直径,减少卫燃带敷设面积,将燃烧器改为一次风集中布置方式;改造后1号炉运行稳定,消除了炉内大量结焦、结大焦现象。结论:保持充足的运行氧量及采用合适燃烧切圆直径,将燃烧器改为一次风集中布置方式是解决锅炉严重结焦的主要途径。
In order to improve the security and economical efficiency of unit operation,the main cause of slag buildup is analyzed,that is,low ash fusion temperature of the as fired coal,lacking oxygen content,too large diameter of firing tangential circle,flame brushing against wall,poor cooperation of pulverized coal and air flow,too large refractory belt area,and the layout of burner incompatible with burning coal.The countermeasures are proposed,that is,blending burning coal in a reasonable way,increasing ash fusion temperature of the as fired coal,maintaining adequate oxygen content,using appropriate diameter of firing tangential circle,reducing the area of refractory belt,and adopting concentrated disposal of primary air for burner.After the transformation,the operation of No.1 furnace is stable,and the phenomenon of slag buildup and large coke is eliminated.So the above-mentioned is the major way to solve the serious slag buildup of boiler.
出处
《四川电力技术》
2011年第1期83-86,共4页
Sichuan Electric Power Technology
