Why use deoxygenated water for boiler feed water?
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Why does boiler feed water use deoxygenated water instead of desalted water? What is the purpose of deoxygenating deoxygenated water?
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Oxygen corrosion is the most common and serious corrosion in boiler systems. Since the water supply is generally in contact with the atmosphere, the dissolved oxygen in the water is basically saturated, so the pipelines and equipment through which the water supply flows are subject to oxygen corrosion. The form of oxygen corrosion is generally ulcer-type corrosion and small hole-type local corrosion, so this kind of corrosion can seriously damage the strength of metal components. A considerable proportion of boilers are damaged and scrapped due to corrosion caused by poor boiler feed water deoxygenation. Therefore, in order to eliminate the corrosion and harm of dissolved oxygen to the boiler water and steam system, * * Standard regulations: For boilers with an evaporation capacity greater than 2t/h, deoxygenation measures must be taken for the feed water, and the dissolved oxygen in the feed water is required to be controlled within a qualified range based on the boiler operating pressure.