Numerical Study on CO2 Pollution in an Ignition Chamber by Oxygen Enrichment
In this study, a 3D combustion chamber was simulated
using FLUENT 6.32. Aims to obtain accurate information about the
profile of the combustion in the furnace and also check the effect of
oxygen enrichment on the combustion process. Oxygen enrichment is
an effective way to reduce combustion pollutant. The flow rate of air
to fuel ratio is varied as 1.3, 3.2 and 5.1 and the oxygen enriched
flow rates are 28, 54 and 68 lit/min. Combustion simulations
typically involve the solution of the turbulent flows with heat
transfer, species transport and chemical reactions. It is common to
use the Reynolds-averaged form of the governing equation in
conjunction with a suitable turbulence model. The 3D Reynolds
Averaged Navier Stokes (RANS) equations with standard k-ε
turbulence model are solved together by Fluent 6.3 software. First
order upwind scheme is used to model governing equations and the
SIMPLE algorithm is used as pressure velocity coupling. Species
mass fractions at the wall are assumed to have zero normal
gradients.Results show that minimum mole fraction of CO2 happens
when the flow rate ratio of air to fuel is 5.1. Additionally, in a fixed
oxygen enrichment condition, increasing the air to fuel ratio will
increase the temperature peak. As a result, oxygen-enrichment can
reduce the CO2 emission at this kind of furnace in high 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, 0300/7307, 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, 0300/7307, 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:54625", author = "Zohreh Orshesh", title = "Numerical Study on CO2 Pollution in an Ignition Chamber by Oxygen Enrichment", abstract = "In this study, a 3D combustion chamber was simulated
using FLUENT 6.32. Aims to obtain accurate information about the
profile of the combustion in the furnace and also check the effect of
oxygen enrichment on the combustion process. Oxygen enrichment is
an effective way to reduce combustion pollutant. The flow rate of air
to fuel ratio is varied as 1.3, 3.2 and 5.1 and the oxygen enriched
flow rates are 28, 54 and 68 lit/min. Combustion simulations
typically involve the solution of the turbulent flows with heat
transfer, species transport and chemical reactions. It is common to
use the Reynolds-averaged form of the governing equation in
conjunction with a suitable turbulence model. The 3D Reynolds
Averaged Navier Stokes (RANS) equations with standard k-ε
turbulence model are solved together by Fluent 6.3 software. First
order upwind scheme is used to model governing equations and the
SIMPLE algorithm is used as pressure velocity coupling. Species
mass fractions at the wall are assumed to have zero normal
gradients.Results show that minimum mole fraction of CO2 happens
when the flow rate ratio of air to fuel is 5.1. Additionally, in a fixed
oxygen enrichment condition, increasing the air to fuel ratio will
increase the temperature peak. As a result, oxygen-enrichment can
reduce the CO2 emission at this kind of furnace in high air to fuel
rates.", keywords = "Combustion chamber, Oxygen enrichment, Reynolds
Averaged Navier- Stokes, CO2 emission", volume = "6", number = "8", pages = "1516-4", }