空预器堵灰预防及处理

由于三分仓受热面旋转容克式空气预热器有着较好的性价比,几乎被所有的大容量火力发电机组采用。通过对600 MW机组的空气预热器蓄热元件进行三层布置,蓄热元件呈双波浪形。由于烟气中的硫酸蒸汽和水蒸气在低温换热元件上凝结,将灰粒黏聚而成积灰,这种积灰导致流通阻力不断的增加,直到流通部分及完全堵塞为止。探索空预器蓄热元件的堵灰原因,并通过采取防范措施控制空预器蓄热元件的堵灰程度,以控制其一、二次风侧出入口差压正常,保证锅炉的安全运行。

Air preheater Clogging prevention and treatment

As the third position in the heating surface rotating Ljungstrom air preheater has a good price,almost all large-capacity thermal power generating units used.600MW unit by regenerative air preheater arrangement of three components,heat storage components,double-wave shape. As the flue gas sulfuric acid vapor and water vapor condenses on the cold heat exchanger components,the cohesive ash particles from fouling,the fouling resistance led to a steady increase in circulation until the flow of parts and complet...