Control phosphate in steam boiler is controlling process of phosphate which is supplied into steam boiler. Phosphate is soluble in water alkalinity in the boiler so that the concentration can be maintained by adding sodium phosphate which having different alkalinity.
Depending on the substances contained in the feed water and desired level of alkalinity in the boiler water and also the selected phosphate, so the control of phosphate can be equipped with add alkali in the form of sodium carbonate or sodium hydroxide.
The main function of phosphate in the application of high pressure is to provide a defense to alkalinity of boiler water. Phosphate solution can be mixed from three basic sources of phosphate are: sodium phosphate, disodium phosphate and trisodium phosphate.
The presence of hydrogen cation in the phosphate compound will affect amount of alkalinity of boiler water and relationship of boiler water pH. During the pressure of steam boiler increases, the number of reduced alkalinity in order to minimize ability to rust.
With the addition of certain chemicals, so the salts of calcium and magnesium as calcium phosphate and magnesium is precipitated as magnesium hydroxide or magnesium silica if there is silica ions.