Progress in the study of corrosion characteristics of water-wall tubes of power station boilers by Cl⁻/SO₄ ^2-

Abstract

The higher the unit parameters, the more sensitive water-wall tubes are to the impurity ions in the feed water, especially when the feed water contains aggressive ions such as Cl−, SO4 2-, etc., which often cause severe corrosion to equipment. A great deal of research has been carried out to understand the characteristics of power plant boiler water wall tubes corroded by Cl−/SO4 2-, which is essential to keep industrial boilers running and power stations safe.In this paper, the author firstly elaborates on the furnace water treatment condition and the source of Cl−/SO4 2- in power plant furnace water; then, the development of water-wall tubes of the power plant corrosion study in Cl−/SO4 2- solution is summarized and discussed.