Since the 1970s, nothing substantially new has been published in the gas turbine community about the hot corrosion by vanadium and its inhibition, after the “inhibition orthodoxy” based on the formation of magnesium vanadate, was established. However, the experience acquired since the late 1980s with heavy-duty gas turbines burning ash-forming fuels in southern China, shows that the combustion of very contaminated fuels does not entail corrosion nor abundant ash-deposit on gas turbines buckets. Analyses of deposits collected from gas turbines fired with these crude oils showed that the ash-deposit contains a large amount of nickel. These new facts led to revisit the role played by nickel and envisage its possible inhibiting action against the vanadium-induced hot corrosion. A thorough review of the literature on the vanadium-induced corrosion have been carried out, and the study of the nickel effects with respect to magnesium effects on the ash deposit have been performed. Results show that nickel presents an interesting way to substitute magnesium for the inhibition of vanadium-induced hot corrosion. The advantages of nickel with respect to magnesium are to be efficient at alow Ni/V ratio, to produce less abundant, less adherent ash and to act, to some extent, as a self-cleaning agent for the blades of the turbine.
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July 2003
Technical Papers
Revisiting the Inhibition of Vanadium-Induced Hot Corrosion in Gas Turbines
E. Rocca,
e-mail: emmanuel.rocca@lcsm.uhp-nancy.fr
E. Rocca
Universite´ Henri Poincare´–Nancy I, Laboratoire de Chimie du Solide Mine´ral, UMR CNRS 7555, B. P. 239, 54506 Vandoeuvre-Le`s-Nancy, France
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P. Steinmetz,
P. Steinmetz
Universite´ Henri Poincare´–Nancy I, Laboratoire de Chimie du Solide Mine´ral, UMR CNRS 7555, B. P. 239, 54506 Vandoeuvre-Le`s-Nancy, France
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M. Moliere
M. Moliere
GE Energy Products–Europe, 1, Avenue Charles Bohn, B. P. 379, 90007 Belfort, France
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E. Rocca
Universite´ Henri Poincare´–Nancy I, Laboratoire de Chimie du Solide Mine´ral, UMR CNRS 7555, B. P. 239, 54506 Vandoeuvre-Le`s-Nancy, France
e-mail: emmanuel.rocca@lcsm.uhp-nancy.fr
P. Steinmetz
Universite´ Henri Poincare´–Nancy I, Laboratoire de Chimie du Solide Mine´ral, UMR CNRS 7555, B. P. 239, 54506 Vandoeuvre-Le`s-Nancy, France
M. Moliere
GE Energy Products–Europe, 1, Avenue Charles Bohn, B. P. 379, 90007 Belfort, France
Contributed by the International Gas Turbine Institute (IGTI) of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS for publication in the ASME JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Paper presented at the International Gas Turbine and Aeroengine Congress and Exhibition, New Orleans, LA, June 4–7, 2001; Paper 01-GT-005. Manuscript received by IGTI, December 2000, final revision, March 2001. Associate Editor: R. Natole.
J. Eng. Gas Turbines Power. Jul 2003, 125(3): 664-669 (6 pages)
Published Online: August 15, 2003
Article history
Received:
December 1, 2000
Revised:
March 1, 2001
Online:
August 15, 2003
Citation
Rocca, E., Steinmetz, P., and Moliere, M. (August 15, 2003). "Revisiting the Inhibition of Vanadium-Induced Hot Corrosion in Gas Turbines ." ASME. J. Eng. Gas Turbines Power. July 2003; 125(3): 664–669. https://doi.org/10.1115/1.1456095
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