Why is dissolved oxygen detrimental to feedwater?

Dissolved oxygen is detrimental to feedwater primarily because it can lead to corrosion of the boiler and piping. When oxygen is present in the feedwater, it reacts with iron and steel materials commonly used in boilers and piping systems, forming iron oxides or rust. This process not only weakens the structural integrity of these components over time but can also create deposits that further exacerbate corrosion and reduce efficiency.

Corrosion can create leaks, increase maintenance costs, and significantly shorten the lifespan of the equipment, leading to operational failures or costly repairs. Managing dissolved oxygen levels through pretreatment processes, such as deaeration, is essential to prevent these issues and ensure the longevity and efficiency of the boiler system.