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Anti erosion enhancement of economizer tubes in power plant boilers
Date:2025-11-12 11:21     Source:daokedao     Browse:16

The economizer tubes of power plant boilers are subject to erosion from fly ash and corrosion from flue gas, resulting in 3-4 shutdowns and maintenance due to leaks each year. The annual loss of a single boiler exceeds 5 million yuan. Daokedao has melted Ni-Al-Y alloy coating on the windward side of the economizer tube, which has 6 times the erosion resistance of the original tube and a smoke corrosion resistance of up to 6000 hours. After being applied in a thermal power plant in India, the leakage cycle of the economizer tube has been extended from 1 year to 5 years, the annual shutdown maintenance frequency has been reduced to 0.5 times, and a single boiler has saved an annual loss of 3 million yuan. The thermal conductivity of the coating is close to that of the original pipe, and the boiler thermal efficiency decreases by less than 0.1%, which does not affect the operating efficiency of the unit at all.

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