On the Estimation of Oxide Scale Growth in T22 Superheater and Reheater Tubes

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In this paper, an iterative procedure was performed for the prediction of scale growth in T22 superheater and reheater tubes, which utilized empirical formulae for oxide-growth kinetics in steam and heat transfer analysis. Several expressions for oxide-growth kinetics and different thermal conductivities of scale were considered in calculations. The results indicate that the expression for oxide-growth kinetics can affect the estimated results significantly, and the thermal conductivity of scale has relatively small influence on the prediction of scale growth, but the influence degree increases with time.

Info:

Periodical:

Advanced Materials Research (Volumes 516-517)

Edited by:

Jinyue Yan, Charles C. Zhou, Rutang Liao and Jianwen Wang

Pages:

364-369

DOI:

10.4028/www.scientific.net/AMR.516-517.364

Citation:

C. X. Bian et al., "On the Estimation of Oxide Scale Growth in T22 Superheater and Reheater Tubes", Advanced Materials Research, Vols. 516-517, pp. 364-369, 2012

Online since:

May 2012

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Price:

$35.00

[1] Program on technology innovation: oxide growth and exfoliation on alloys exposed to steam, EPRI, Palo Alto, CA: 2007. 1013666.

[2] R. B. Dooley, Opening remarks at the EPRI-NPL workshop on scale growth and exfoliation in steam plant, National Physical Laboratory, Teddington, England, Sept. 3-5, (2003).

[3] T.J. Wardle, Creep-rupture assessment of superheater tubes using nondestructive oxide thickness measurements, in: International Conference on Life Management and Life Extension of Power Plant, China, May (2000).

[4] S.R. Paterson, T.W. Rettig, Remaining life estimation of boiler pressure parts-2¼Cr-1Mo superheater and reheater tubes, Project RP 2253-5, Final Report, Electric Poweer Research Institute, Palo Alto, CA, (1987).

[5] A.S. Sabau, I.G. Wright, On the estimation of thermal strains developed during oxide growth, Journal of Applied Physics 106, 023503(2009).

DOI: 10.1063/1.3157199

[6] J. Purbolaksono, A. Khinani et al., Prediction of oxide scale growth in superheater and reheater tubes, Corrosion Science, 51(2009), 1022-1029.

DOI: 10.1016/j.corsci.2009.02.025

[7] I.M. Rehn, W. Apblett, Corrosion problems in coal fired fossil boiler superheater and reheater tubes, Report CS 1811, EPRI, Palo Alto, CA, (1981).

[8] S.R. Paterson, R. Moser, and T.R. Rettig, pp.8-8.

[9] M. Montgomery, A. Karlsson, Survey of oxidation in steamside conditions, VGB Kraftswerkstechnik, 75(3), 235-240(1995).

[10] R. Viswanathan, Gamage mechanisms and life assessment of high-temperature components, (1989).

[11] J. Armitt, R. Holmes, M.I. Manning, D.B. Meadowcroft, and E. Metcalfe, The Spalling of Steam-Grown Oxide from Superheater and Reheater Tube Steels. EPRI, Palo Alto, CA: February 1978. FP-686.

[12] J. Molgaard, W.W. Smeltzer, Thermal conductivity of magnetite and hematite, Journal of Applied Physics, Vol. 42, pp.3644-3647, (1971).

[13] M.P. Manahan, Thermal expansion and conductibity of magnetite flakes from the Oconee-2 steam generator, Journal of Materials Science, 25(1990), pp.3424-3428.

DOI: 10.1007/bf00575366

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