Gas Turbines: Combustion, Fuels, and Emissions

Gas Turbine Emission Characteristics in Perfectly Premixed Combustion

[+] Author and Article Information
A. M. Elkady, J. Herbon

 Combustion Aero Technology and Design,  GE - Aviation, Evendale, OH, 45241

D. M. Kalitan, G. Leonard

 Energy and Propulsion Technologies,  GE Global Research Center, Niskayuna, NY, 12309

R. Akula

BEC-ATO,GE Energy,  JFW Technology Center, 560 066, Bangalore, India

H. Karim, M. Hadley

 GE Energy, Greenville, SC, 29615

J. Eng. Gas Turbines Power 134(6), 061501 (Apr 12, 2012) (7 pages) doi:10.1115/1.4006058 History: Received April 13, 2011; Accepted October 18, 2011; Published April 09, 2012; Online April 12, 2012

In the present study, a simple perfectly premixed research burner was utilized at temperatures, pressures and residence times representative of an industrial gas turbine cycle to identify the lower limit of NOx and CO emissions, and to establish an emissions benchmark for practical gas turbine combustors. In addition to experimental data, a chemical reactor model has been utilized for the prediction of the NOx and CO, based on detailed chemical reaction mechanisms. Several current kinetics mechanisms were evaluated and subsequently compared to the experimental data. In addition, sensitivity analysis was performed to identify important reactions at the conditions tested, and will be discussed.

Copyright © 2012 by American Society of Mechanical Engineers
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Figure 1

Experimental setup

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Figure 2

Perforated plate design. Dimensions are in [cm].

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Figure 3

Chemical kinetic reactor network for flame simulation

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Figure 4

NOx emissions as function of flame temperature. Comparison with Leonard and Correa [1].

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Figure 5

NOx emissions at P3 ∼ 12.58 atm, T3 ∼ 688 K, and τ ∼ 20 ms compared to GRI-Mech 3.0 [7] model

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Figure 6

Combustor heat loss analysis: (a) heat loss model used to represent the experiment, (b) test section instrumentation for quantification of heat losses

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Figure 7

Comparison of the data and model [7] after accounting for the heat loss through the combustor walls

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Figure 8

Comparison of heat loss corrected chemical kinetics mechanisms [7-12] and experimental data at conditions listed in Table 2

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Figure 9

Effect of pressure on NOx production. (a) Experimental results; (b) model results.

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Figure 10

Pressure Effect on ROP of NOx

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Figure 11

Effect of residence time on NOx production: (a) experimental results, (b) model results

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Figure 12

Effect of pressure on CO emission

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Figure 13

Effect of residence time on CO emissions

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Figure 14

Comparison of CO experimental and modeled results



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