Materials Selection for Superheater Tubes in Municipal Solid Waste Incineration Plants

被引:18
|
作者
Morales, M. [1 ]
Chimenos, J. M. [1 ]
Fernandez, A. I. [1 ]
Segarra, M. [1 ]
机构
[1] Univ Barcelona, Ctr DIOPMA, Dept Ciencia Mat & Engn Met, E-08028 Barcelona, Spain
关键词
corrosion; heat exchanger tube; material selection; municipal solid waste incineration plant; Ni-alloys; stainless steel; CORROSION; OXIDATION; TEMPERATURE; ALLOYS; EXPERIENCE; MECHANISMS; CHLORIDES; DESIGN; STEEL; IRON;
D O I
10.1007/s11665-014-1100-y
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
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 400 A degrees C, 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 a,not sign/kg) and a good thermal conductivity (23-27 W/m K). Meanwhile, Nitronic 50/XM-19 stainless steel is the most promising candidate for long-term selection, as it presents high corrosion resistance with a relatively low price (4.86-5.14 a,not sign/kg) compared to Ni-alloys.
引用
收藏
页码:3207 / 3214
页数:8
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