630 MW机组低氮燃烧系统燃烧调整优化
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摘要
对某电厂630 MW亚临界汽包锅炉进行了低氮燃烧调整优化,通过主燃区二次风门及SOFA风门开度调整和提高运行氧量,CO含量控制在100μL/L左右,燃烧滞后现象明显改善,过热器及再热器减温水量降低,减温水量能够满足机组升降负荷速率的要求。解决了低氮燃烧器改造后出现的问题,找到了适合锅炉安全经济运行的最佳工况。
Low nitrogen combustion adjustment and optimization of 630 MW subcritical drum boiler in a power plant were carried out. By adjusting the opening of secondary air valve and SOFA air valve in main combustion zone and increasing the operating oxygen content, CO content was controlled at about 100, combustion lag was obviously improved, Superheater and reheater desuperheater water volume was reduced, and the desuperheater water volume could meet the requirement of unit load increasing and decreasing rate. The problems arising from the retrofit of low nitrogen burner have been solved, and the optimum working conditions suitable for the safe and economic operation of boiler have been found.
Low nitrogen combustion adjustment and optimization of 630 MW subcritical drum boiler in a power plant were carried out. By adjusting the opening of secondary air valve and SOFA air valve in main combustion zone and increasing the operating oxygen content, CO content was controlled at about 100, combustion lag was obviously improved, Superheater and reheater desuperheater water volume was reduced, and the desuperheater water volume could meet the requirement of unit load increasing and decreasing rate. The problems arising from the retrofit of low nitrogen burner have been solved, and the optimum working conditions suitable for the safe and economic operation of boiler have been found.
引文
[1] 方朝君,余美玲,郭常春. 煤煤电站脱硝喷氨优化研究[J]. 工业安全与环保,2014 (2):25-26.
[2] 王颖聪,卢坤. 600 MW 机组锅炉低NOx 燃烧系统改造数值模拟[J]. 热力发电,2014,43(8):122-123.
[3] 刘琦,吕国强,于存喜,等. 超超临界600 MW机组锅炉燃尽风调整对NOx排放及锅炉经济性的影响[J]. 热力发电,2009,38(9):52-53.
[4] 杨强. 电厂锅炉燃烧调整技术的发展与应用[J]. 科技创新与生产力,2013 (11):88-89.
[5] 胡志宏,李德功,邵红军,等. 600 MW机组锅炉低氮燃烧改造[J]. 热力发电,2014,44(4):133-134.
[6] 李明,欧宗现,崔金雷,等. 燃煤锅炉低NOx燃烧技术节点功能区的应用[J]. 热力发电,2013,43(11):28-29.
[7] 张春华,王士桥,刘峰. 300 MW 机组切圆燃烧锅炉低氮燃烧改造[J]. 热力发电,2015,44(3):125-126.
[2] 王颖聪,卢坤. 600 MW 机组锅炉低NOx 燃烧系统改造数值模拟[J]. 热力发电,2014,43(8):122-123.
[3] 刘琦,吕国强,于存喜,等. 超超临界600 MW机组锅炉燃尽风调整对NOx排放及锅炉经济性的影响[J]. 热力发电,2009,38(9):52-53.
[4] 杨强. 电厂锅炉燃烧调整技术的发展与应用[J]. 科技创新与生产力,2013 (11):88-89.
[5] 胡志宏,李德功,邵红军,等. 600 MW机组锅炉低氮燃烧改造[J]. 热力发电,2014,44(4):133-134.
[6] 李明,欧宗现,崔金雷,等. 燃煤锅炉低NOx燃烧技术节点功能区的应用[J]. 热力发电,2013,43(11):28-29.
[7] 张春华,王士桥,刘峰. 300 MW 机组切圆燃烧锅炉低氮燃烧改造[J]. 热力发电,2015,44(3):125-126.