Experimental study on the effect of H2S and SO2 on high temperature corrosion of 12Cr1MoV |
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| Authors: | Hong Xu Shangkun Zhou Yiming Zhu Weigang Xu Xiaohe Xiong Houzhang Tan |
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| Affiliation: | 1.Jiangsu Fangtian Electric Technology Co. Ltd., Nanjing 211102, China;2.MOE Key Laboratory of Thermo-Fluid Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, China;3.School of Mechanical Engineering, Changzhou University, Changzhou 213164, China |
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| Abstract: | Aiming at the high temperature corrosion in a coal-fired boiler, the effect of H2S and SO2 on the corrosion of 12Cr1MoV under the water wall condition has been investigated by experiments. The results indicate that H2S can promote the corrosion significantly, and the coarse porous oxide film formed cannot stop the progress of corrosion. While SO2 presents little effect on the corrosion. The main composition of the surface of 12Cr1MoV corrosion products is Fe2O3. With H2S in the atmosphere, the corrosion gradually develops into deeper layers by forming FeS, FeO and Fe2O3 alternately. The corrosion rate is doubled for every 50 °C increase in temperature at 400–500 °C. |
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| Keywords: | Corresponding author. High temperature corrosion Water wall 12Cr1MoV 2 2 |
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