High-Temperature Corrosion in Gas Turbine and Steam Boilers by Fuel Impurities—Part VI: A Statistical Study of the Effects of Sodium, Temperature and Additive on Corrosion Rate and Slag Friability

[+] Author and Article Information
W. R. May, M. J. Zetlmeisl, R. R. Annand

Tretolite Division, Petrolite Corp., St. Louis, Mo.

J. Eng. Power 98(4), 506-510 (Oct 01, 1976) (5 pages) doi:10.1115/1.3446228 History: Received July 31, 1975; Online July 14, 2010


Corrosion rate and slag friability data on several systems containing Na2 SO4 , V2 O5 , PbO, MgSO4 , and SiO2 have been examined with a stepwise regression correlation procedure. Correlations were developed relating Na/V, additive/V and temperature as independent variables to corrosion rate and slag friability as dependent variables. The superiority of magnesium over silicon as a corrosion inhibitor was demonstrated while the opposite was shown for slag friability. A critical Na/V ratio was found for certain additive levels and temperature. Below this level, the corrosion rate can be reduced to a minimum. Threshold temperatures were also established. Above these temperatures, the corrosion rate cannot be reduced to zero regardless of the Na/V ratio.

Copyright © 1976 by ASME
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