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Title: Materials selection for superheater tubes in municipal solid waste incineration plants
Author: Morales Comas, Miguel
Chimenos Ribera, Josep Ma.
Fernández Renna, Ana Inés
Segarra Rubí, Mercè
Keywords: Corrosió i anticorrosius
Eliminació de residus
Plantes de tractament de residus
Corrosion and anti-corrosives
Refuse and refuse disposal
Waste products
Refuse disposal facilities
Issue Date: 18-Jun-2014
Publisher: Springer Verlag
Abstract: Corrosion reduces the lifetime of municipal solid waste incineration (MSWI) superheater tubes more than any other cause. It can be minimized by the careful selection of those materials that are most resistant to corrosion under operating conditions. Since thousands of different materials are already known and many more are developed every year, here the selection methodology developed by Prof. Ashby of the University of Cambridge was used to evaluate the performance of different materials to be used as MSWI superheater tubes. The proposed materials can operate at steam pressures and temperatures over 40 bars and 400ºC, respectively. Two case studies are presented: one makes a balanced selection between mechanical properties and cost per thermal unit; and the other focuses on increasing tube lifetime. The balanced selection showed that AISI 410 martensitic stainless steel (wrought, hard tempered) is the best candidate with a good combination of corrosion resistance, a relatively low price (0.83-0.92 e/kg) and a good thermal conductivity (23-27 W/m K). Meanwhile, Nitronic 50/XM-19 stainless steel is the most promising candidate for longterm selection, as it presents high corrosion resistance with a relatively low price (4.86-5.14 e/kg) compared to Ni-alloys.
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It is part of: Journal of Materials Engineering and Performance, 2014, vol. 23, num. 9, p. 3207-3214
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ISSN: 1059-9495
Appears in Collections:Articles publicats en revistes (Ciència dels Materials i Química Física)

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