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简述了石洞口二电厂两台超临界６００ＭＷ机组的凝结水精处理系统的运行、维护管理、存在的问题及其解决方法。该系统系由美国Ｇｒａｖｅｒ公司提供，为体外再生中压三罐系统，采用ＳｅｐｒｅｘⅡ再生工艺；阳、阴树脂分别为Ｄｏｗ公司的ＨＧＲ—Ｗ２及５５０Ａ均粒阴树脂，容积比为１．５∶１。正常运行时，混床在Ｈ型时的出水Ｈ＋导电率达０．０８μＳ／ｃｍ，Ｎａ＋和Ｆｅ均小于５μｇ／Ｌ。凝汽器微量泄漏（即凝结水Ｋ＋Ｈ导电度上升至０．３～０．５μＳ／ｃｍ）时，精除盐器出水的Ｋ＋Ｈ导电度仍可保持在０．２μＳ／ｃｍ以下。存在的问题主要是：１．由于阳再生罐结构方面的原因使阴树脂混入阳树脂中而产生交义污染（阳树脂混入阴树脂中，Ｓｅｐｒｅｘ法能很好的加以解决）；２．ＨＧＲ—Ｗ２阳树脂性能较差，容易破碎，中压精除盐系统最好使用均拉型树脂
The operation, maintenance and management of the condensate polishing system of two supercritical 600MW units in Shidongkou No.2 Power Plant are briefly described. The existing problems and solutions are summarized. The system is provided by the United States Graver company for the regeneration of medium pressure three tank system, the use of Seprex Ⅱ regeneration process; positive and negative resins were Dow’s HGR-W2 and 550A average particle resin, the volume ratio of 1.5: 1 . In normal operation, the H + conductivity of effluent from the mixed bed reached 0.08μS / cm, and both Na + and Fe were less than 5μg / L. Condenser trace leakage (ie Condensed water K + H conductivity increased to 0.3 ~ 0.5μS / cm), the K + H conductivity of the desalination water can still be maintained below 0.2μS / cm. The main problems are: 1. Due to the structure of the positive regenerative tank, the anion resin is mixed with the cation resin to produce the cross-contamination (the cation resin is mixed into the anion resin, and the Seprex method can be well solved); HGR-W2 positivity resin is poor, easy to break, the pressure desalination system is best to use the average resin