超临界单炉膛CFB锅炉床压失稳故障分析
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摘要
分析了350 MW超临界循环流化床机组出现的床压波动现象,通过对一次风量控制逻辑的优化调整,有效地抑制了床压大幅波动,降低了床压失稳故障的发生几率。提出解决床压失稳的根本途径是优化入炉煤的粒径,并通过合理的煤质掺配,改善床料的粒径分布,以获得良好的炉内流化特性。
The fluctuation of bed pressure of supercritical circulating fluidized bed in 350 MW unit is analyzed. By optimizing and adjusting the primary air flow control logic, the large fluctuation of bed pressure is effectively restrained and the probability of bed pressure instability is reduced. The basic way to solve the instability of bed pressure is to optimize the particle size of coal into the furnace, improve the particle size distribution of bed material through reasonable coal blending, and obtain good fluidization characteristics in the furnace.
The fluctuation of bed pressure of supercritical circulating fluidized bed in 350 MW unit is analyzed. By optimizing and adjusting the primary air flow control logic, the large fluctuation of bed pressure is effectively restrained and the probability of bed pressure instability is reduced. The basic way to solve the instability of bed pressure is to optimize the particle size of coal into the furnace, improve the particle size distribution of bed material through reasonable coal blending, and obtain good fluidization characteristics in the furnace.
引文
1蒋茂庆,高洪培,邝伟,等.300MW循环流化床锅炉床料翻床原因分析及运行对策[J].热力发电,2007,36(6):127-129.
2 吴玉平,周嗣林,蒋茂庆.300MW循环流化床锅炉翻床现象及处理方法[J].热力发电,2007,36(8):55-57.
3 刘剑,董志乾,朱劲松.300MW循环流化床锅炉两床失稳及翻床的特性分析[J].热力发电,2007,36(4):53-55.
4 李金晶,吕俊复,龚鹏,等.大型循环流化床锅炉炉膛内床压摆动的机理[J].动力工程学报,2013,33(4):245-249.
5 杨彦卿,鞠录权.300MW双支腿型循环流化床锅炉一次风自动控制策略优化[J].内蒙古电力技术,2014,32(2):45-48.
2 吴玉平,周嗣林,蒋茂庆.300MW循环流化床锅炉翻床现象及处理方法[J].热力发电,2007,36(8):55-57.
3 刘剑,董志乾,朱劲松.300MW循环流化床锅炉两床失稳及翻床的特性分析[J].热力发电,2007,36(4):53-55.
4 李金晶,吕俊复,龚鹏,等.大型循环流化床锅炉炉膛内床压摆动的机理[J].动力工程学报,2013,33(4):245-249.
5 杨彦卿,鞠录权.300MW双支腿型循环流化床锅炉一次风自动控制策略优化[J].内蒙古电力技术,2014,32(2):45-48.