论文部分内容阅读
炉膛卫燃带区域水冷壁管是循环流化床锅炉受热面磨损最严重的部位,描述了循环流化床锅炉炉膛内部含尘烟气的流动状态,以及沿炉膛四周水冷壁管的贴壁回流现象。由于贴壁回流现象的存在,一方面强化了炉内的传热和传质过程;另一方面由于炉内颗粒贴壁回流现象的存在,使得循环流化床对炉内凹凸不平的现象特别敏感,导致循环流化床锅炉炉膛卫燃带区域磨损严重。通过调研国内锅炉制造厂家所采取的各种防磨措施,以及各种防磨措施下的防磨效果,对循环流化床锅炉炉膛卫燃带磨损问题提出了一些观点。
Heater deflagration zone water wall tube is the most serious part of circulating fluidized bed boiler heated surface wear, describes the circulating fluidized bed boiler flue gas dust inside the flow state, and along the wall around the furnace water wall tube adherent reflux phenomenon. Due to the existence of adherent backflow phenomenon, on the one hand, the heat transfer and mass transfer in the furnace are strengthened; on the other hand, circulating fluidized bed is particularly sensitive to the unevenness in the furnace due to the particle backflow phenomenon in the furnace , Resulting in serious wear and tear of the hearth zone of the hearth of the circulating fluidized bed boiler. By investigating the various anti-wear measures taken by the domestic boiler manufacturers and the anti-wear effect under various anti-wear measures, some opinions are put forward on the wear and tear of the deflagration belt in the hearth of a circulating fluidized bed boiler.