Method for suppressing corrosion fatigue of boiler evaporation tube
AssigneeKurita Water Industries Ltd.
InventorsMizuyuki SAKAI, Kazuyoshi UCHIDA
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Abstract
This invention effectively suppresses the corrosion fatigue of a boiler evaporation tube that is associated with repeated stress attributed to the presence of a corrosive environment and scales. This method for suppressing corrosion fatigue of a boiler evaporation tube includes maintaining the dissolved oxygen concentration of the boiler water at 1.0 mg/L or less. Preferably deionized water is used for the boiler water and a scale dispersant is present in the boiler water.
Claims6
A method for inhibiting corrosion fatigue of an evaporation tube in a boiler, comprising controlling a dissolved oxygen concentration of water in the boiler to 1.0 mg/L or less.
Dependencies are inferred from the claim text.