Why is boiler water treated?

Boiler water is treated to prevent scaling, corrosion, foaming, and priming. Chemicals are put into boiler water through the chemical feed tank to keep the water within chemical range. Scale is precipitated impurities out of the water and then forms on heat transfer surfaces.Click to see full answer. In this regard, what is boiler water treatment chemicals?Boiler Water Treatment Chemicals. A complete water treatment programme for a steam boiler will usually include a chemical oxygen scavenger, alkalinity builder and polymer sludge conditioner and, depending on the application, may also incorporate a phosphate treatment and a condensate line treatment.One may also ask, what is boiler water conductivity? For boiler water, the conductivity increases at the rate of approximately 2% (of the value at 25°C) for every 1°C increase in temperature. This can be written as: Example 3.12.3. A boiler water sample has an unneutralised conductivity of 5 000 μS/cm at 25°C. Simply so, what are the methods use in the treatment of boiler water? Filtration and ultrafiltration. Ion exchange/softening. Membrane processes such as reverse osmosis and nanofiltration. Deaeration/degasification. Coagulation/chemical precipitation. Why sodium triphosphate is added in boiler water?Phosphate buffers the boiler water, reducing the chance of large pH changes due to the development of high caustic concentrations. Excess caustic combines with disodium phosphate and forms trisodium phosphate. Elevated temperatures at the boiler tube wall or deposits can result in some precipitation of phosphate.