AN OVERVIEW OF STEAM BOILERS CHEMICAL TREATMENT STRATEGIES

The Feed water usage in Boiler has the limitation for Iron, Copper, Total hardness Silica and dissolved solids. The operation of the Boiler will be affected due to the presence of Calcium and Magnesium salts in the water. The presence of excess Oxygen and Carbon dioxide in Boiler feed water tend to make corrosion in the Boiler parts. The use of chemicals in treating Boiler water tend to improve the Boiler efficiency, reduced maintenance cost, increased Equipment life, reduce the Fuel cost and minimize the water usage. When the Boiler water becomes steam which leaves the impurities like salts of calcium and Magnesium and the same impurities shall be removed from the Boiler by blowdown and addition of makeup water. This paper outlines detrimental effects of dissolved salts, ions and gases present in the Boiler feed water and condensate water and remedial solution such as chemical treatment strategies which eventually increases the life of the Boiler system.