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First Assessment of Biogas Co-Firing on the GE MS9001FA Gas Turbine Using CFD

[+] Author Affiliations
J. A. Lycklama à Nijeholt, E. M. J. Komen

NRG Petten, Petten, The Netherlands

A. J. L. Verhage

KEMA-Power Generation & Sustainables, Arnhem, The Netherlands

M. C. van Beek

Electrabel, Zwolle, The Netherlands

Paper No. GT2003-38804, pp. 267-273; 7 pages
doi:10.1115/GT2003-38804
From:
  • ASME Turbo Expo 2003, collocated with the 2003 International Joint Power Generation Conference
  • Volume 1: Turbo Expo 2003
  • Atlanta, Georgia, USA, June 16–19, 2003
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 0-7918-3684-3 | eISBN: 0-7918-3671-1
  • Copyright © 2003 by ASME

abstract

Replacement of fossil fuel by biomass-derived fuel is currently under study in the Netherlands within the context of CO2 -neutral electricity production. In view of this, co-firing biogas in the natural-gas fired Eems gas turbine power plant is being considered. This would entail extension of the power station with a biomass gasification plant for the production of biogas. The main unit of the Electrabel Eemshaven Power Station consists of five GE MS9001FA-gas turbines. A target is to replace up to 13% of natural gas consumption by biogas. The objective of the current project was to determine the impact of co-firing on the flame behavior. Therefore various options for biogas co-firing using combinations of pilot and premix burners have been studied. Computational Fluid Dynamics (CFD) simulations of the combustion process using a geometrical model of the complete combustion chamber have been performed. The flow conditions at the premix burner outlets were determined with a separate, detailed CFD model of the burner, simulating the fuel-air mixing with the required high accuracy. Advanced combustion modeling with help of the detailed GRI 3.0-reaction mechanism was used, as well as simpler models for fast chemical kinetics. A method was devised for calibrating the applied combustion models. Various firing strategies involving the premix and pilot burners were analyzed. Safe ranges for biogas co-firing have been determined in this first feasibility study.

Copyright © 2003 by ASME

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