Condensate Polishing Unit (CPU)

Condensate Polishing Unit The Ionberg Condensate polishing is employed for purifying return steam condensate. This is essential for meeting the quality requirements of high pressure thermal cycles. It also minimizes consumption of make-up water. Condensate polishing is applied in places where the condensate is the major portion of the Boiler Feed Water. It is also applied if the risk of contamination of return condensate is persistent. The Condensate Polishing removes following types of impurities: Corrosive impurities Oxides of iron, copper and nickel are the major corrosive products. These products could be either in the form of particulate matter or in solution. They are removed by filtration of the condensate. Cartridge or precoat filters can be used for filtering these corrosive products. Dissolved Salts Sometimes due to leakage of cooling water the impurities caused by dissolved salts arise. The use of ion exchange demineralizers these impurities can be cleared. For low-contamination levels mixed-bed ion exchangers are commonly used. Separate cation and anion exchangers can be used only when there is higher level of mineral contamination.