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Titolo:
Demonstration test of new corrosion-resistant boiler tube materials in high efficiency waste incineration plant
Autore:
Kawahara, Y; Orita, N; Takahashi, K; Nakagawa, Y;
Indirizzi:
Mitsubishi Heavy Ind Co Ltd, Yokohama R&D Ctr, Kanazawa Ku, Yokohama, Kanagawa 2368515, Japan Mitsubishi Heavy Ind Co Ltd Yokohama Kanagawa Japan 2368515 368515, Japan
Titolo Testata:
TETSU TO HAGANE-JOURNAL OF THE IRON AND STEEL INSTITUTE OF JAPAN
fascicolo: 8, volume: 87, anno: 2001,
pagine: 544 - 551
SICI:
0021-1575(200108)87:8<544:DTONCB>2.0.ZU;2-W
Fonte:
ISI
Lingua:
JPN
Keywords:
waste incineration boiler; high-temperature corrosion; corrosion mechanisms; corrosion-resistant materials; weld overlay; metal splay coating; Ni-Cr-Mo alloy; boiler tube;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
11
Recensione:
Indirizzi per estratti:
Indirizzo: Kawahara, Y Mitsubishi Heavy Ind Co Ltd, Yokohama R&D Ctr, Kanazawa Ku, 1-8-1 Sachiura, Yokohama, Kanagawa 2368515, Japan Mitsubishi Heavy Ind Co Ltd1-8-1 Sachiura Yokohama Kanagawa Japan 2368515
Citazione:
Y. Kawahara et al., "Demonstration test of new corrosion-resistant boiler tube materials in high efficiency waste incineration plant", TETSU HAGAN, 87(8), 2001, pp. 544-551

Abstract

In order to develop a 9.8 MPa/500 degreesC highly efficient waste incineration boiler with 30% electric efficiency, application of highly corrosion-resistant materials for superheater and corrosion-resistant coatings for waterwall are indispensable. Corrosion life of six conventional and six newly developed superheater tube materials and two waterwall coatings were evaluated for two years in the NEDO waste incineration pilot plant. As the results of the test. an excellent durability of more than six years for Ni-Cr-Mo alloy seamless and composite tubes of tertiary superheater, for Ni-Cr-Fe alloy tubes and cermet spray coating of secondary superheater and for alloy625 weld overlay and NiCrSiB alloy HVOF coatings of waterwall were clarified. Also the corrosion rate equation capable of corrosion life estimation was suggested by multiple regression analysis. Particularly. an addition of Mo to Ni base alloy was elective to prevent corrosion in severe corrosive conditions. Furthermore. the effect of corrosion factors that important to design the plant, i.e. soot blower effect, gas/metal temperature, time dependence of corrosion thickness loss etc. were clarified quantitatively.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/04/20 alle ore 15:23:14