600MWe直接空冷机组精处理工艺选择探讨

Discussion on Precision Processing Technology Selection for Condensation Water of 600MWe Direct air Cooling Unit

直接空冷机组的凝结水在温度、氢电导率、溶解氧和含铁量等方面与湿冷机组相比有明显不同。凝结水处理采用2×50%分床精处理工艺,在精处理进水温度高于54℃之后,精处理出水品质开始劣化,分析认为这是水温超过54℃之后,NH4+与阳树脂的结合能力发生了逆转,结合能力大增,导致阳树脂不能有效结合甚至是释放其他有害离子。

Comparing with water-cooling unit,the condensate water of direct air cooling unit is different in the temperature,conductivity of hydrogen,iron content and others.The 2×50% separated bed precision processing technology is adopted for condensate water treatment,When the temperature of entering water of polishing device was higher than 54℃,the quality of output water began to deteriorate;the reason was found by analysis that the binding ability of ion NH4+ with cation exchange resin will increase greatly afte...