卓资电厂670t/h锅炉结渣原因分析及解决方法

Cause analysis and solutions about slagging of 670 t/h boiler in Zhuozi Power Plant

针对卓资电厂670t/h锅炉结渣严重的问题,进行了燃烧调整试验,利用热电偶对燃烧器区温度场进行了测量。试验结果表明:在燃烧器中心区域,煤粉着火点距燃烧器喷口都在1m以上;在燃烧器二次风区域,煤粉着火点在距燃烧器喷口±0.1m内。通过增大外二次风风门开度和一次风量,能够降低燃烧器喷口附近水冷壁区域的温度,减轻燃烧器喷口附近水冷壁结渣。

To solve the slagging problem of a 670 t/h boiler in Zhuozi Power Plant, combustion adjustment experiment were performed and the temperature field in burner region was measured by a thermocouple. The result shows that the distance between the coal ignition point and the burner nozzle is more than 1.0 m in the center area of the burner, and that is in the range of-0.1 m to ＋0.1 m in the secondary air area of the burner. By increasing outer secondary air box damper opening and primary air flow can lower the temperature in the burner region near the water wall and the slagging near the burner nozzle.