BOILER CHEMICALS AND METHOD OF PREVENTING CORROSION OF BOILERS

摘要

Disclosed is a boiler chemical having both oxygen scavenging function and softening function. The boiler chemical contians a starch phosphate and/or a water-soluble salt thereof. A starch phosphate and/or a water-solbule salt thereof are/is added to the boiler feed water in a given amount or an amount as determined by the phosphate ion concentration in the boiler water and scaled, as measured, whereby the boiler is prevented from being corroded.