Investigation into high-temperature corrosion in a large-scale municipal waste-to-energy plant
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Author list: Phongphiphat A., Ryu C., Yang Y.B., Finney K.N., Leyland A., Sharifi V.N., Swithenbank J.
Publisher: Elsevier
Publication year: 2010
Journal: Corrosion Science (0010-938X)
Volume number: 52
Issue number: 12
Start page: 3861
End page: 3874
Number of pages: 14
ISSN: 0010-938X
Languages: English-Great Britain (EN-GB)
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Abstract
High-temperature corrosion in the superheater of a large-scale waste-to-energy plant was investigated. A comparison of nickel-/iron-based alloys and austenitic stainless steel probes placed in the furnace demonstrated that temperature and particle deposition greatly influence corrosion. Nickel-based alloys performed better than the other metal alloys, though an aluminide coating further increased their corrosion resistance. Sacrificial baffles provided additional room for deposit accumulation, resulting in vigorous deposit-induced corrosion. Computational modelling (FLUENT code) was used to simulate flow characteristics and heat transfer. This study has shown that the use of aluminide coatings is a promising technique for minimising superheater corrosion in such facilities. ฉ 2010 Elsevier Ltd.
Keywords
A. Alloys, A. Metal coatings, B. Modelling studies, B. SEM, B. XRD, C. High-temperature corrosion
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