With an increasing interest in the burning of heavy fuels in gas turbines there is also concern with the precise determination of the corrosive effects which may arise from the use of these fuels. Of particular interest is a class of fuels known as ASTM Specification No. 3-GT which has a low level of metal contaminant, nominally up to 5 ppm alkali metal and 2 ppm vanadium. In this paper we describe experimental laboratory equipment and the program with which we determine the extent of corrosion to be expected when such fuels are burned in gas turbines. The results using several pieces of experimental apparatus are presented, and their correlation with available field experience is considered. In general, the amount of deposit which collects on the blade surface and precedes corrosive attack is proportional to the amount of contaminant in the gas stream. There is a significant influence of stream velocity and/or pressure on hot corrosion which must be considered in applying the results from low-velocity low-pressure rigs to operating gas turbines. According to the data obtained in a pressurized passage which realistically simulates the actual gas turbine, fuel containing 5 ppm Na and 2 ppm V is too corrosive to use in the gas turbine at a 1500 deg F metal temperature.
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July 1971
This article was originally published in
Journal of Engineering for Power
Research Papers
Laboratory Procedures for Evaluating High-Temperature Corrosion Resistance of Gas Turbine Alloys
S. Y. Lee,
S. Y. Lee
Westinghouse Research Laboratories, Pittsburgh, Pa.
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S. M. DeCorso,
S. M. DeCorso
Gas Turbine Division, Westinghouse Research Laboratories, Lester, Pa.
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W. E. Young
W. E. Young
Westinghouse Research Laboratories, Pittsburgh, Pa.
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S. Y. Lee
Westinghouse Research Laboratories, Pittsburgh, Pa.
S. M. DeCorso
Gas Turbine Division, Westinghouse Research Laboratories, Lester, Pa.
W. E. Young
Westinghouse Research Laboratories, Pittsburgh, Pa.
J. Eng. Power. Jul 1971, 93(3): 313-320 (8 pages)
Published Online: July 1, 1971
Article history
Received:
July 29, 1970
Online:
July 14, 2010
Citation
Lee, S. Y., DeCorso, S. M., and Young, W. E. (July 1, 1971). "Laboratory Procedures for Evaluating High-Temperature Corrosion Resistance of Gas Turbine Alloys." ASME. J. Eng. Power. July 1971; 93(3): 313–320. https://doi.org/10.1115/1.3445582
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