传统的工艺流程是:软化水箱(池)—→工业水泵—→热力除氧器—→给水泵—→省煤器—→锅炉。该工艺较普遍地用于10t/h及以上工业锅炉和发电锅炉。铸铁省煤器属于非沸腾式省煤器,其出口水温应较饱和温度低40～50℃,否则会引起沸腾发生水冲击现象,导致省煤器损坏。按照沸腾式省煤器的要求,其出口水温度应符合下列 The traditional process is: softened water tank (pool) - → industrial pumps - → thermal deaerator - → feed water pump - → economizer - → boiler. This process is more commonly used in industrial boilers and power generation boilers of 10 t / h and above. Cast iron economizer belongs to the non-boiling economizer, the outlet water temperature should be lower than the saturation temperature 40 ~ 50 ℃, otherwise it will cause boiling phenomenon of water impact, resulting in economizer damage. In accordance with the requirements of boiling economizer, the outlet water temperature should meet the following