Abstract: Generally, resin particle aggregation, resin floating and the reduction of cycling water production often occur when the ion exchange resin is contaminated by the oil in the condensate polishing system, which endangers the safe operation of the units. In this paper, aiming at these problems, through the analysis of the performance and status of the contaminated resin, the economic and feasible recovery method is developed. The practice shows that no aggregation or floating is observed in the oil contaminated resin after the treatment with the new recovery method. The resin separation is effective and the water quality is recovered to the pre-contaminated level, meeting GB/T 12145-2008 requirements.

Key words: power plant, condensate polishing system, resin, oil pollution, recovery