Fuel preheat as NOx abatement strategy for oxygen enriched turbulent diffusion flames

Emir M. Amin, Mohammed Pourkashanian, Andrew P. Richardson, Alan Williams, Loo T. Yap, Richard A. Yetter, N. Albert Moussa

Research output: Contribution to conferencePaper

2 Citations (Scopus)

Abstract

The high thermal efficiencies achievable in industrial furnaces through oxygen enrichment has attracted much interest. As a result, oxygen-enrichment techniques are used in various processes such as glass melting, ferrous as well as non-ferrous melting, cement production, lime production, etc. With the higher temperatures and the availability of oxygen, generally increased emissions of NOx have to be tolerated. In this study measurements in a laboratory scale oxygen enriched turbulent diffusion flames of preheated methane are presented. An axisymmetric burner with coflowing oxygen enriched air is used which employs direct electrical heating of the methane. Experimental techniques included the measurement of the radiant fluxes from the flame using pyrometry, on-line gas analysis for combustion products and a laser extinction technique for the measurement of soot concentration. The flow field was computed using the k-ε model with two step global reaction scheme. A simplified mechanistic model for soot formation is used. The model for soot and thermal NO was based on the laminar flamelet model. The fluctuations in the mixture fraction was a clipped Gaussian pdf. Results have shown that fuel preheating can locally reduce the temperature through enhanced soot formation. The result is a reduction in the EINOx emission as a result of reduced thermal NO formation.

Original languageEnglish (US)
Pages259-269
Number of pages11
StatePublished - Dec 1 1995
EventProceedings of the 1995 International Joint Power Generation Conference. Part 1 (of 4) - Minneapolis, MN, USA
Duration: Oct 8 1995Oct 12 1995

Other

OtherProceedings of the 1995 International Joint Power Generation Conference. Part 1 (of 4)
CityMinneapolis, MN, USA
Period10/8/9510/12/95

Fingerprint

Soot
Oxygen
Methane
Melting
Pyrometry
Industrial furnaces
Gas fuel analysis
Preheating
Fuel burners
Lime
Flow fields
Cements
Availability
Fluxes
Heating
Glass
Temperature
Lasers
Air
Hot Temperature

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering
  • Environmental Engineering

Cite this

Amin, E. M., Pourkashanian, M., Richardson, A. P., Williams, A., Yap, L. T., Yetter, R. A., & Moussa, N. A. (1995). Fuel preheat as NOx abatement strategy for oxygen enriched turbulent diffusion flames. 259-269. Paper presented at Proceedings of the 1995 International Joint Power Generation Conference. Part 1 (of 4), Minneapolis, MN, USA, .
Amin, Emir M. ; Pourkashanian, Mohammed ; Richardson, Andrew P. ; Williams, Alan ; Yap, Loo T. ; Yetter, Richard A. ; Moussa, N. Albert. / Fuel preheat as NOx abatement strategy for oxygen enriched turbulent diffusion flames. Paper presented at Proceedings of the 1995 International Joint Power Generation Conference. Part 1 (of 4), Minneapolis, MN, USA, .11 p.
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abstract = "The high thermal efficiencies achievable in industrial furnaces through oxygen enrichment has attracted much interest. As a result, oxygen-enrichment techniques are used in various processes such as glass melting, ferrous as well as non-ferrous melting, cement production, lime production, etc. With the higher temperatures and the availability of oxygen, generally increased emissions of NOx have to be tolerated. In this study measurements in a laboratory scale oxygen enriched turbulent diffusion flames of preheated methane are presented. An axisymmetric burner with coflowing oxygen enriched air is used which employs direct electrical heating of the methane. Experimental techniques included the measurement of the radiant fluxes from the flame using pyrometry, on-line gas analysis for combustion products and a laser extinction technique for the measurement of soot concentration. The flow field was computed using the k-ε model with two step global reaction scheme. A simplified mechanistic model for soot formation is used. The model for soot and thermal NO was based on the laminar flamelet model. The fluctuations in the mixture fraction was a clipped Gaussian pdf. Results have shown that fuel preheating can locally reduce the temperature through enhanced soot formation. The result is a reduction in the EINOx emission as a result of reduced thermal NO formation.",
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Amin, EM, Pourkashanian, M, Richardson, AP, Williams, A, Yap, LT, Yetter, RA & Moussa, NA 1995, 'Fuel preheat as NOx abatement strategy for oxygen enriched turbulent diffusion flames', Paper presented at Proceedings of the 1995 International Joint Power Generation Conference. Part 1 (of 4), Minneapolis, MN, USA, 10/8/95 - 10/12/95 pp. 259-269.

Fuel preheat as NOx abatement strategy for oxygen enriched turbulent diffusion flames. / Amin, Emir M.; Pourkashanian, Mohammed; Richardson, Andrew P.; Williams, Alan; Yap, Loo T.; Yetter, Richard A.; Moussa, N. Albert.

1995. 259-269 Paper presented at Proceedings of the 1995 International Joint Power Generation Conference. Part 1 (of 4), Minneapolis, MN, USA, .

Research output: Contribution to conferencePaper

TY - CONF

T1 - Fuel preheat as NOx abatement strategy for oxygen enriched turbulent diffusion flames

AU - Amin, Emir M.

AU - Pourkashanian, Mohammed

AU - Richardson, Andrew P.

AU - Williams, Alan

AU - Yap, Loo T.

AU - Yetter, Richard A.

AU - Moussa, N. Albert

PY - 1995/12/1

Y1 - 1995/12/1

N2 - The high thermal efficiencies achievable in industrial furnaces through oxygen enrichment has attracted much interest. As a result, oxygen-enrichment techniques are used in various processes such as glass melting, ferrous as well as non-ferrous melting, cement production, lime production, etc. With the higher temperatures and the availability of oxygen, generally increased emissions of NOx have to be tolerated. In this study measurements in a laboratory scale oxygen enriched turbulent diffusion flames of preheated methane are presented. An axisymmetric burner with coflowing oxygen enriched air is used which employs direct electrical heating of the methane. Experimental techniques included the measurement of the radiant fluxes from the flame using pyrometry, on-line gas analysis for combustion products and a laser extinction technique for the measurement of soot concentration. The flow field was computed using the k-ε model with two step global reaction scheme. A simplified mechanistic model for soot formation is used. The model for soot and thermal NO was based on the laminar flamelet model. The fluctuations in the mixture fraction was a clipped Gaussian pdf. Results have shown that fuel preheating can locally reduce the temperature through enhanced soot formation. The result is a reduction in the EINOx emission as a result of reduced thermal NO formation.

AB - The high thermal efficiencies achievable in industrial furnaces through oxygen enrichment has attracted much interest. As a result, oxygen-enrichment techniques are used in various processes such as glass melting, ferrous as well as non-ferrous melting, cement production, lime production, etc. With the higher temperatures and the availability of oxygen, generally increased emissions of NOx have to be tolerated. In this study measurements in a laboratory scale oxygen enriched turbulent diffusion flames of preheated methane are presented. An axisymmetric burner with coflowing oxygen enriched air is used which employs direct electrical heating of the methane. Experimental techniques included the measurement of the radiant fluxes from the flame using pyrometry, on-line gas analysis for combustion products and a laser extinction technique for the measurement of soot concentration. The flow field was computed using the k-ε model with two step global reaction scheme. A simplified mechanistic model for soot formation is used. The model for soot and thermal NO was based on the laminar flamelet model. The fluctuations in the mixture fraction was a clipped Gaussian pdf. Results have shown that fuel preheating can locally reduce the temperature through enhanced soot formation. The result is a reduction in the EINOx emission as a result of reduced thermal NO formation.

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Amin EM, Pourkashanian M, Richardson AP, Williams A, Yap LT, Yetter RA et al. Fuel preheat as NOx abatement strategy for oxygen enriched turbulent diffusion flames. 1995. Paper presented at Proceedings of the 1995 International Joint Power Generation Conference. Part 1 (of 4), Minneapolis, MN, USA, .