Phosphate Dozing System Problems Water Analysis From Intake Well To Boiler Drum N Pptx

Author Dalbo 21 Mar 2026

Small quantities of phosphate solution injection called ‘phosphate dozing’ into boiler drums (below figure) precipitate the bfw residual salts Corrosion can weaken boiler components and lead to. Continuous or periodic small quantities drum water blow down rids of these precipitates and maintains bfw.

phosphate dosing system for industrial water treatment

Phosphate Dozing System Problems Water Analysis From Intake Well To Boiler Drum N Pptx

Learn how boiler phosphate treatment works, which phosphate types are used, how to control dosage and phosphate residual, and when treatment should be adjusted for different boiler conditions. It can be caused by factors such as exposure to oxygen, acids, or bases When we try intermittent blow down, there is a heavy drain of boiler water & phosphate

We will not be able to make up for the drained phosphate with regular dosage rates of chemicals

Ppchem 76 ppchem hints from the experts the phenomenon of hideout with increasing load and pressure (a decrease in phosphate and an increase in ph) and hideout return. A symptom of such corrosion can be when the residue, caused by oxidisation of the metal pipes, turns tap water brown The document discusses modifications made to the phosphate dosing system of a boiler at rtps unit 5 Due to a blocked dosing header inside the boiler drum, phosphate could not be dosed to maintain.

Acid phosphate corrosion occurs in units experiencing phosphate hideout problems and thus the mechanism is most often active in the high pressure boilers and hp hrsg evaporators operating. Corrosion is the deterioration of a metal surface due to a chemical reaction