Why should the phosphate be added to the boiler feed water or in the boiler water?
The so-called calcium phosphate is a kind of soft water residue, it is easy to go away with the boiler.Therefore, as long as the control of the amount of PO43- in the furnace, you can make the furnace water Ca2 + content is very small
The method of adding phosphate to the boiler feed water is called phosphate treatment of boiler feed water, adding phosphate solution to boiler feed water, controlling a certain amount of phosphate (PO43-), producing the following reaction under alkaline condition:
In order to prevent the production of calcium and alkaline corrosion in the boiler, adding phosphate to the boiler feed water, so that with the boiler feed water into the furnace Ca2 + does not form scale, but the formation of water slag, and through the boiler to be excluded.
Is a soft water residue, it is easy to go away with the boiler.Therefore, as long as the control of the amount of PO43- in the furnace water, you can make the furnace water Ca2 + content is very small.In actual production, usually with trisodium phosphate
