华电技术 ›› 2012, Vol. 34 ›› Issue (5): 4-7.

• 专题综述 • 上一篇    下一篇

660MW机组W形火焰锅炉燃烧优化调整

贾永会   

  1. 河北省电力研究院,河北石家庄050021
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2012-05-25

Optimized adjustment of combustion for Wshape flame boiler in 660MW unit

JIA Yonghui   

  1. Hebei Electric Power Research Institute, Shijiazhuang 050021, China
  • Received:1900-01-01 Revised:1900-01-01 Published:2012-05-25

摘要: 针对某电厂660MW机组W形火焰锅炉燃用煤种与设计煤质偏差较大、锅炉效率偏低的问题进行了燃烧优化调整试验。首先通过调整F挡板对省煤器出口氧量分布进行调平,然后从影响锅炉运行经济性的主要因素入手,结合该锅炉的特点,分析了负荷变化、二次风变化、煤质变化和C挡板开度等参数对锅炉效率的影响,指出了合理的运行工况。

关键词: W形火焰锅炉, 燃烧调整试验, 锅炉效率, 工况

Abstract:

Due to that the practically fired coal of the boiler deviates greatly from the designed coal grade, the efficiency of the Wshape flame boiler of the 660MW unit in a power plant is lower. Aiming at this problem, the combustion optimized adjustment experiment was carried out. As first step, the F damper was regulated to balance the oxygen distribution in the outlet of the coal economizer. Then, starting from the main factors influencing on the operational economical efficiency of the boiler, combining with the features of the boiler, the influences of the load variation, the second air flow variation, the coal quality variation and the open degrees of C damper on the boiler efficiency were analyzed; and a rational operating condition was proposed.

Key words: W-shape flame boiler, experiment of combustion adjustment, boiler efficiency, operating condition