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Published in: Journal of Material Cycles and Waste Management 1/2024

02-11-2023 | ORIGINAL ARTICLE

High-temperature corrosion mechanism analysis of 310S alloy in typical MSWI flue gas environment at 460–580 °C

Authors: Xiaobo Liu, Yin Duan, Lin Zheng, Ling Long, Zeinab Khalid, Qunxing Huang, Xuguang Jiang

Published in: Journal of Material Cycles and Waste Management | Issue 1/2024

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Abstract

To reveal the high-temperature corrosion mechanism of heating surfaces in the typical flue gas environment in the municipal solid waste incineration (MSWI) system, samples of 310S alloy, a commonly used boiler superheater heating surface material, were deposited with NaCl/50 wt.% K2SO4 and exposed to a typical MSWI flue gas atmosphere of 7% O2 + 600 ppm HCl + 100 ppm SO2 + N2 at 460, 510, 550, and 580 °C for 168 h for corrosion test. The macroscopic morphology, corrosion kinetics, phase composition of corrosion products, and the distribution and content of elements in the corrosion section were analyzed. Our results showed that the NaCl/50 wt. % K2SO4 salt mixture was an extremely corrosive reagent, and its corrosiveness was enhanced with the increase in temperatures. At 460 °C, the salt mixture did not melt, and the corrosion was induced by the reactions between alkali chlorides and alloy, plus the “active oxidation” catalyzed by chlorine. At 510–580 °C, the salt mixtures were completely melted, considerable metal chlorides and some metal sulfides were detected in corrosion products, and the corrosion was controlled by “electrochemical” reactions within the molten salt, coupled with the “active oxidation”. These findings provide new insights into high-temperature corrosion phenomena in MSWI plants.

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Literature
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go back to reference Karlsson S, Jonsson T, Hall J, Svensson J, Liske J (2014) Mitigation of fireside corrosion of stainless steel in power plants: a laboratory study of the influences of SO2 and KCl on initial stages of corrosion. Energ Fuel 28:3102–3109. https://doi.org/10.1021/ef402127hCrossRef Karlsson S, Jonsson T, Hall J, Svensson J, Liske J (2014) Mitigation of fireside corrosion of stainless steel in power plants: a laboratory study of the influences of SO2 and KCl on initial stages of corrosion. Energ Fuel 28:3102–3109. https://​doi.​org/​10.​1021/​ef402127hCrossRef
Metadata
Title
High-temperature corrosion mechanism analysis of 310S alloy in typical MSWI flue gas environment at 460–580 °C
Authors
Xiaobo Liu
Yin Duan
Lin Zheng
Ling Long
Zeinab Khalid
Qunxing Huang
Xuguang Jiang
Publication date
02-11-2023
Publisher
Springer Japan
Published in
Journal of Material Cycles and Waste Management / Issue 1/2024
Print ISSN: 1438-4957
Electronic ISSN: 1611-8227
DOI
https://doi.org/10.1007/s10163-023-01812-7

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