EVALUATING THE CONCENTRATION OF NITROGEN OXIDES AT THE MODEL GAS TURBINE COMBUSTION CHAMBER OUTLET
DOI:
https://doi.org/10.14529/power200302Keywords:
GAS TURBINE, NITROGEN OXIDESAbstract
The study applies a new technique for evaluating the NOx concentration when burning syngas in the gas turbine combustion chamber. The technique allows correlating the complete detailed mechanism of the Grimech 3.0 array of parallel reactions with the computer hydrodynamics equations (motion, heat and mass transfer, turbulence, and molecular diffusion equations for an ideal gas flow). Selectivity diagrams of the NOx formation process including eleven key reactions are built based on the specific reaction rates for lean and rich fuel mixtures. Verification calculations have been performed based on a model gas turbine combustion chamber within a fuel-air equivalence ratio of 0.5-2. The new technique has been applied for determining the NOx emissions and the maximum temperature of the industrial combustion chamber fire tube wall. The GE gas composition showed the best NOx emission result. The most problematic is Polk Power and Texaco syngas (oxygen process). When burning LCV gases in the primary air suction area, a recirculation zone is observed; due to the high heat release in this area, the maximum wall temperature is about 500 °С.
Downloads
References
Giuffrida A., Romano M.C. Lozza G. Thermodynamic Analysis of Air-Blown Gasification for IGCC Applications. Applied Energy, 2011, vol. 88, pp. 3949–3958. DOI: 10.1016/j.apenergy.2011.04.009
Ryzhkov A. Technological solutions for an advanced IGCC plant. Fuel, 2018, vol. 214, pp. 63–72. DOI:
1016/j.fuel.2017.10.099
Stopper U. PIV, 2D-LIF and 1D-Raman measurements of flow field, composition and temperature in premixed gas turbine flames. Experimental Thermal and Fluid Science, 2010, vol. 34, pp. 396–403. DOI:
1016/j.expthermflusci.2009.10.012
Xia Y. Simulating Flame Response to Acoustic Excitation for an Industrial Gas Turbine Combustor.
th International Congress on Sound and Vibration, 23–27 July, 2017, London.
Fedina E. Assessment of Finite Rate Chemistry Large Eddy Simulation Combustion Models. Flow Turbul.
Combust, 2017, vol. 99. DOI: 10.1007/s10494-017-9823-0
Bulat G. NO and CO formation in an industrial gas-turbine combustion chamber using LES with
the Eulerian sub-grid PDF method. Combustion and Flame, 2014. DOI: 10.1016/j.combustflame.2013.12.028
Eun-Seong Cho. Numerical Evaluation of NOx Mechanisms in Methane-Air Counter Flow Premixed Flames.
Journal of Mechanical Science and Technology, 2009, vol. 23, pp. 659–666. DOI: 10.1007/s12206-008-1222-y
Bose D., Candlert G.V. Kinetics of the N2 + O NO + N Reaction Under Thermodynamic Nonequilibrium. Journal of thermophysics and heat transfer, 1996, vol. 10, no. 1, p. 148. DOI: 10.2514/3.765
Waldman C.H., Wilson R.P., Jr., and K.L Maloney. Kinetic Mechanism of methane/air combustion with
pollutant formation. EPA-650/2-74-045, June 1994, pp. 23–24.
Grimech 3.0. Available at: http://combustion.berkeley.edu/gri-mech/version30/text30.html (accessed
06.2020).
Park J., Hershberger J.F. Kinetics and product branching ratios of the CN + NO2 reaction. The Journal of
Chemical Physics, 1993, vol. 99, 3488. DOI: 10.1063/1.466171
Webinar Recording: ANSYS Chemkin Pro and Energico. Reaction Design Product Overview. Available
at: https://www.youtube.com/watch?v=ee_uY5cHG2U&t=1293s (accessed 01.06.2020).
Hasegawa T. Gas Turbine Combustion Technology Reducing Both Fuel-NOx and Thermal-NOx Emissions for Oxygen-Blown IGCC WithHot/Dry Synthetic Gas Cleanup. Journal of Engineering for Gas Turbines and
Power, 2007, vol. 129, pp. 358–369. DOI: 10.1115/1.2432896
Filippov P. Validation of the thermal NOx emissions model from a gas fuel combustor under atmospheric
pressure. Journal of Physics: Conference Series, 2017, vol. 899, pp. 1–5. DOI: 10.1088/1742-6596/899/9/092005
Howe G. et al. RTI Warm Syngas Cleanup Operational Testing at Tampa Electric Company’s Polk 1
IGCC Site: Final Scientific: Technical. Pittsburgh, PA, 2018. 197 р.
Woods M.C. Reaction kinetics and simulation models for novel high-temperature desulfurization sorbents.
Research Triangle Inst., Research Triangle Park, NC; Louisiana State Univ., Baton Rouge, USA, 1989,
no. DOE/MC/24160-2671.
Downloads
Published
How to Cite
Issue
Section
