330MW四角切圆锅炉燃烧器分层布置防结焦优化研究

准东高钠煤灰熔点较低,针对某厂330 MW四角切圆锅炉燃烧器分层布置上层燃烧器区域严重结焦的问题,采用试验与模拟相结合的方法进行研究。研究表明:稳定运行时,炉内温度场与速度场分布呈"蝴蝶型",在上层燃烧器区域有较强还原性气氛。针对此问题,采用改变上层燃烧器一、二次风配风方式的燃烧优化调整方案,对炉内燃烧进行优化调整。优化后上层燃烧器区域氧化性气氛增强,还原性气氛减弱,抑制结焦能力增强。该方法可供燃用准东高钠煤锅炉的防结焦运行和改造参考借鉴。

330MW Tangentially Boiler Burners layered arrangement

Low sodium Zhundong high ash melting point, this paper factory 330MW Tangentially Boiler Burners layered arrangement of the upper burner region coking serious problem, using a combination of experimental and simulation methods for research. Research shows: stable operation, the furnace temperature field and velocity field was "butterfly" in the upper region of the burner there is a strong reducing atmosphere. To solve this problem, by changing the upper burner a secondary air distribution combustion optimization adjustment programs, for the combustion to optimize the adjustment. After optimizing the upper burner region oxidizing atmosphere enhanced reductive atmosphere weakened, inhibiting coking capacity enhancement. Anti-coking operation of the method for burning coal boiler Zhundong high sodium and reference for transformation.