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Second-Generation Low-Emission Combustors for ABB Gas Turbines: Field Measurements With GT11N-EV FREE

[+] Author Affiliations
M. Aigner, G. Müller

ABB Power Generation Ltd., Baden, Switzerland

Paper No. 92-GT-322, pp. V004T10A016; 6 pages
doi:10.1115/92-GT-322
From:
  • ASME 1992 International Gas Turbine and Aeroengine Congress and Exposition
  • Volume 4: Heat Transfer; Electric Power; Industrial and Cogeneration
  • Cologne, Germany, June 1–4, 1992
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7896-5
  • Copyright © 1992 by ASME

abstract

In February 1991 a type GT11N gas turbine (Midland U.S.A.) was retrofitted with ABB’s new EV-Silo-Combustor. Tests were then carried out to examine the operation concept, to demonstrate the technical reliability and to confirm the low emission performance of this new technology. This paper will describe:

1.) The combustor design:

- one single silo combustor mounted on the turbine and equipped with 37 EV-burners.

2.) The results of the extensive field measurements:

The operation concept (lean premix combustion without any pilot diffusion flames, 7 burner groups) is simple and reliable:

- The emission targets

NOx < 25 ppmv (15% O2, natural gas)

CO < 8 ppmv

UHC < 5 ppmv

were reached. NOx-values are even lower than 15 ppmv at base load.

- The NOx-predictions for the GT11N-EV, based on the results of high pressure tests in Cologne (ASME PAPER 90-GT-308), compare very well with the results of field measurements.

Copyright © 1992 by ASME
This article is only available in the PDF format.

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