Open AccessStudy on the Effect of Additives on the Corrosion to Metal Heating Surface Caused by Alkali Metal Chloride and Sulfate in Biomass-fired Boilers
Author(s) -
Yungang Li,
Yongzheng Wang,
Ke Zhang,
Yu Sun
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/768/2/022050
Subject(s) - corrosion , bauxite , alkali metal , chloride , sulfate , metallurgy , fly ash , materials science , metal , red mud , dolomite , pulverized coal fired boiler , coal , chemistry , composite material , organic chemistry
In this paper, the horizontal tube furnace was used to study the inhibition effect of various additives on the corrosion to metal heating surface in biomass-fired boiler. The results showed that the corrosion rate of the metal samples was significantly reduced by kaolin, pulverized coal ash, silica fume, dolomite, limestone and bauxite. When kaolin, pulverized coal ash, silica fume and bauxite are used as additives, the corrosion is obviously inhibited. When dolomite and limestone are used as additives, the inhibition effect is poor, but the corrosion rate is also reduced. The corrosion ability of alkali metal chloride is greater than that of alkali metal sulfate. Different additives have different inhibitory effects on them.