Numerical Study of Oxygen Enrichment on NO Pollution Spread in a Combustion Chamber
In this study, a 3D combustion chamber was simulated
using FLUENT 6.32. Aim to obtain detailed information on
combustion characteristics and _ nitrogen oxides in the furnace and
the effect of oxygen enrichment in a combustion process. Oxygenenriched
combustion is an effective way to reduce emissions. This
paper analyzes NO emission, including thermal NO and prompt NO.
Flow rate ratio of air to fuel is varied as 1.3, 3.2 and 5.1 and the
oxygen enriched flow rates are 28, 54 and 68 lit/min. The 3D
Reynolds Averaged Navier Stokes (RANS) equations with standard
k-ε turbulence model are solved together by Fluent 6.32 software.
First order upwind scheme is used to model governing equations and
the SIMPLE algorithm is used as pressure velocity coupling. Results
show that for AF=1.3, increase the oxygen flow rate of oxygen
reduction in NO emissions is Lance. Moreover, in a fixed oxygen
enrichment condition, increasing the air to fuel ratio will increase the
temperature peak, but not the NO emission rate. As a result, oxygen
enrichment can reduce the NO emission at this kind of furnace in low
air to fuel rates.
[1] Y. Khazraii, K. Daneshvar, H. PoorkhademNamin, "Numerical
Simulation on Nox Emission in Liquid Fuel Spray Flames," Journal of
Modeling and Optimization, International, Vol. 1, No. 4, October 2011.
[2] Energy Center of Wisconsin, "Oxygen-Enriched Combustion
Technologies," fact sheet, 0300/7370, Publication number 1-426, 2000.
[3] Industrial Technologies Program Energy Efficiency and Renewable
Energy U.S.," Energy Tips - Process Heating," Department of Energy
Washington, DC 20585-0121, Tip Sheet #3
www.eere.energy.gov/industry, September 2005.
[4] A. Frassoldati, S. Firgerio, E. Colombo, F. Inzoli and T. Faravelli,
"Determination of Nox Emissions from Strong Swirling Confined
Flames with an Integrated Cfd-Based Procedure," Chem. Eng. Sci., Vol.
60. No. 11, 2851-2869, June 2005.
[5] Hamzeh Jafar Karimi, Mohammad Hassan Saidi, "Heat Transfer and
Energy Analysis of a Pusher Type Reheating Furnace Using Oxygen
Enhanced Air for Combustion," Journal of Iron and Steel Research,
International, Vol. 17, Issue 4, April 2010, Pages 12-17.
[6] S.S. Daood, W. Nimmo, P. Edge, B.M. Gibbs, "Deep-staged oxygen
enriched combustion of coal," Fuel, Available online 17 February 2011.
[7] L. Álvarez, M. Gharebaghi, J.M. Jones, M. Pourkashanian, A. Williams,
J. Riaza, C. Pevida, J.J. Pis, F. Rubiera, " numerical investigation of NO
emission from an entrained flow reactor under oxy-coal conditions,
"Fuel Processing Technology, Volume 93, Issue 1, January 2012, Pages
53-64.
[8] Fluent Inc., Fluent 6.3 User's Guide, 2007.
[9] B.E. Launder and D.B. Spalding, "The Numerical Computation Of
Turbulent Flows," Comp. Meth. Appl. Mech. Eng., Vol. 3, No. 2, 269-
289, March 1974.
[10] D.L. Baulch, D.D. Drysdall and D.G. Horne, "Evaluated Kinetic Data
For High Temperature Reactions," Butterworth, 1973.
[11] M. Darbandi, A. Banaeizadeh and G. E. Schneider, "Implicit Finite
Volume Method to Simulate Reacting Flow" 43rd AIAA Aerospace
Sciences Meeting and Exhibit, Reno, Nevada, 10-13 Jan, 2005.
[12] Elkaim, D., Reggio, M., and Camarero, R., "Control Volume Finite-
Element Solution of A Confined Turbulent Diffusion Flame,"
Numerical Heat Transfer, Vol. 23, 1993, pp.259-279.
[13] Smoot, J.L, and Lewis, H.M., "Turbulent Gaseous Combustion: Part 1,
Local Species Concentration Measurements," Combustion and Flame,
Vol. 42, 1981, pp.183-196.
[1] Y. Khazraii, K. Daneshvar, H. PoorkhademNamin, "Numerical
Simulation on Nox Emission in Liquid Fuel Spray Flames," Journal of
Modeling and Optimization, International, Vol. 1, No. 4, October 2011.
[2] Energy Center of Wisconsin, "Oxygen-Enriched Combustion
Technologies," fact sheet, 0300/7370, Publication number 1-426, 2000.
[3] Industrial Technologies Program Energy Efficiency and Renewable
Energy U.S.," Energy Tips - Process Heating," Department of Energy
Washington, DC 20585-0121, Tip Sheet #3
www.eere.energy.gov/industry, September 2005.
[4] A. Frassoldati, S. Firgerio, E. Colombo, F. Inzoli and T. Faravelli,
"Determination of Nox Emissions from Strong Swirling Confined
Flames with an Integrated Cfd-Based Procedure," Chem. Eng. Sci., Vol.
60. No. 11, 2851-2869, June 2005.
[5] Hamzeh Jafar Karimi, Mohammad Hassan Saidi, "Heat Transfer and
Energy Analysis of a Pusher Type Reheating Furnace Using Oxygen
Enhanced Air for Combustion," Journal of Iron and Steel Research,
International, Vol. 17, Issue 4, April 2010, Pages 12-17.
[6] S.S. Daood, W. Nimmo, P. Edge, B.M. Gibbs, "Deep-staged oxygen
enriched combustion of coal," Fuel, Available online 17 February 2011.
[7] L. Álvarez, M. Gharebaghi, J.M. Jones, M. Pourkashanian, A. Williams,
J. Riaza, C. Pevida, J.J. Pis, F. Rubiera, " numerical investigation of NO
emission from an entrained flow reactor under oxy-coal conditions,
"Fuel Processing Technology, Volume 93, Issue 1, January 2012, Pages
53-64.
[8] Fluent Inc., Fluent 6.3 User's Guide, 2007.
[9] B.E. Launder and D.B. Spalding, "The Numerical Computation Of
Turbulent Flows," Comp. Meth. Appl. Mech. Eng., Vol. 3, No. 2, 269-
289, March 1974.
[10] D.L. Baulch, D.D. Drysdall and D.G. Horne, "Evaluated Kinetic Data
For High Temperature Reactions," Butterworth, 1973.
[11] M. Darbandi, A. Banaeizadeh and G. E. Schneider, "Implicit Finite
Volume Method to Simulate Reacting Flow" 43rd AIAA Aerospace
Sciences Meeting and Exhibit, Reno, Nevada, 10-13 Jan, 2005.
[12] Elkaim, D., Reggio, M., and Camarero, R., "Control Volume Finite-
Element Solution of A Confined Turbulent Diffusion Flame,"
Numerical Heat Transfer, Vol. 23, 1993, pp.259-279.
[13] Smoot, J.L, and Lewis, H.M., "Turbulent Gaseous Combustion: Part 1,
Local Species Concentration Measurements," Combustion and Flame,
Vol. 42, 1981, pp.183-196.
@article{"International Journal of Mechanical, Industrial and Aerospace Sciences:51016", author = "Zohreh Orshesh", title = "Numerical Study of Oxygen Enrichment on NO Pollution Spread in a Combustion Chamber", abstract = "In this study, a 3D combustion chamber was simulated
using FLUENT 6.32. Aim to obtain detailed information on
combustion characteristics and _ nitrogen oxides in the furnace and
the effect of oxygen enrichment in a combustion process. Oxygenenriched
combustion is an effective way to reduce emissions. This
paper analyzes NO emission, including thermal NO and prompt NO.
Flow rate ratio of air to fuel is varied as 1.3, 3.2 and 5.1 and the
oxygen enriched flow rates are 28, 54 and 68 lit/min. The 3D
Reynolds Averaged Navier Stokes (RANS) equations with standard
k-ε turbulence model are solved together by Fluent 6.32 software.
First order upwind scheme is used to model governing equations and
the SIMPLE algorithm is used as pressure velocity coupling. Results
show that for AF=1.3, increase the oxygen flow rate of oxygen
reduction in NO emissions is Lance. Moreover, in a fixed oxygen
enrichment condition, increasing the air to fuel ratio will increase the
temperature peak, but not the NO emission rate. As a result, oxygen
enrichment can reduce the NO emission at this kind of furnace in low
air to fuel rates.", keywords = "Combustion chamber, Oxygen enrichment, Reynolds
Averaged Navier- Stokes, NO emission", volume = "6", number = "9", pages = "1856-6", }