Boiler Feedwater - Demineralizer

A boiler recovers heat from burned fuels. This is accomplished when high pressure boiler feedwater inside tubes located throughout the boiler is heated and turns into steam or hot water. The steam or hot water is then used in a variety of facility processes. Boiler feedwater often contains inorganic salts, dissolved impurities, and foreign particles, which generate corrosion problems and decrease efficiency due to damage to heat transfer surfaces. Demineralizers use ion exchange resins to remove these impurities in the raw water used for makeup in boiler feedwater.

•Identify and describe the safety hazards and safe work practices associated with boiler feedwater demineralizers •Explain the purpose of boiler feedwater demineralizers •Describe the ion exchange process •Identify and describe the two most common types of demineralizer designs •Explain the regeneration process used in demineralizers