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Combustion Turbine Deposition Observations From Residual and Simulated Residual Oil Studies PUBLIC ACCESS

[+] Author Affiliations
G. A. Whitlow, S. Y. Lee, P. R. Mulik, R. A. Wenglarz

Westinghouse Research and Development Center, Pittsburgh, PA

T. P. Sherlock

Westinghouse Combustion Turbine Systems, Concordville, PA

A. Cohn

Electric Power Research Institute, Palo Alto, CA

Paper No. 82-GT-87, pp. V005T11A001; 11 pages
doi:10.1115/82-GT-87
From:
  • ASME 1982 International Gas Turbine Conference and Exhibit
  • Volume 5: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; Process Industries; Technology Resources; General
  • London, England, April 18–22, 1982
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7960-3
  • Copyright © 1982 by ASME

abstract

Burning residual oil in utility combustion turbines and the consequent deposition on blades and vanes may adversely affect reliability and operation. Corrosion and deposition data for combustion turbine materials have been obtained through dynamic testing in pressurized passages. The deposition produced by the 1900°F (1038°C) combustion gases from a simulated and a real residual oil on cooled Udimet 500 surfaces is described. Higher deposition rates for the doped fuel than for the real residual oil raised questions of whether true simulation with this approach can be achieved. Particles 4–8 μ m in dia predominated in the gas stream, with some fraction in the 0.1–12 μ m range. Deposition rates seemed to be influenced by thermophoretic delivery of small molten particles, tentatively identified as magnesium pyro and metavanadates and free vanadium pentoxide, which may act to bond the larger, solid particles arriving by inertial impaction to turbine surfaces. Estimated maintenance intervals for current utility turbines operating with washed and treated residual oil agreed well with field experience.

Copyright © 1982 by ASME
Topics: Combustion , Turbines
This article is only available in the PDF format.

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