Destruction and formation of no in low pressure stoichiometric CH4/O2 flames

T. Etzkorn; S. Muris; J. Wolfrum; C. Dembny; H. Bockhorn; P. F. Nelson; A. Attia-Shahin; J. Warnatz

doi:10.1016/S0082-0784(06)80110-4

Destruction and formation of no in low pressure stoichiometric CH4/O2 flames

T. Etzkorn^*, S. Muris, J. Wolfrum, C. Dembny, H. Bockhorn, P. F. Nelson, A. Attia-Shahin, J. Warnatz

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

31 Citations (Scopus)

Abstract

A low pressure (10 Torr) stoichiometric CH₄/O₂ flame seeded with NO was investigated using LIF, REMPI and laser absorption spectroscopy. Relative concentration frofiles of OH, CH, CN and the temperature profile were obtained by laser-induced fluorescence. Relative concentration profiles of CH₃ radicals were detected using the REMPI technique. Multipath absorption measurements were used to obtain absolute NO concentrations. The experimental results show that in the low pressure methane-oxygene flame nearly complete removal of the added NO and intermediate formation of CN occurs in the main reaction zone. Furthermore, partial reappearance of NO in the flue gas was observed. In flame structure computations it was not possible to reproduce the experimentally determined NO and CN profiles using the currently available kinetic data on reburn reactions. Further experimental and theoretical studies on the CH₁ + NO reactions are therefore required.

Original language	English
Pages (from-to)	925-932
Number of pages	8
Journal	Symposium (International) on Combustion
Volume	24
Issue number	1
DOIs	https://doi.org/10.1016/S0082-0784(06)80110-4
Publication status	Published - 1992
Externally published	Yes

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10.1016/S0082-0784(06)80110-4

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title = "Destruction and formation of no in low pressure stoichiometric CH4/O2 flames",

abstract = "A low pressure (10 Torr) stoichiometric CH4/O2 flame seeded with NO was investigated using LIF, REMPI and laser absorption spectroscopy. Relative concentration frofiles of OH, CH, CN and the temperature profile were obtained by laser-induced fluorescence. Relative concentration profiles of CH3 radicals were detected using the REMPI technique. Multipath absorption measurements were used to obtain absolute NO concentrations. The experimental results show that in the low pressure methane-oxygene flame nearly complete removal of the added NO and intermediate formation of CN occurs in the main reaction zone. Furthermore, partial reappearance of NO in the flue gas was observed. In flame structure computations it was not possible to reproduce the experimentally determined NO and CN profiles using the currently available kinetic data on reburn reactions. Further experimental and theoretical studies on the CH1 + NO reactions are therefore required.",

author = "T. Etzkorn and S. Muris and J. Wolfrum and C. Dembny and H. Bockhorn and Nelson, {P. F.} and A. Attia-Shahin and J. Warnatz",

year = "1992",

doi = "10.1016/S0082-0784(06)80110-4",

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T1 - Destruction and formation of no in low pressure stoichiometric CH4/O2 flames

AU - Etzkorn, T.

AU - Muris, S.

AU - Wolfrum, J.

AU - Dembny, C.

AU - Bockhorn, H.

AU - Nelson, P. F.

AU - Attia-Shahin, A.

AU - Warnatz, J.

PY - 1992

Y1 - 1992

N2 - A low pressure (10 Torr) stoichiometric CH4/O2 flame seeded with NO was investigated using LIF, REMPI and laser absorption spectroscopy. Relative concentration frofiles of OH, CH, CN and the temperature profile were obtained by laser-induced fluorescence. Relative concentration profiles of CH3 radicals were detected using the REMPI technique. Multipath absorption measurements were used to obtain absolute NO concentrations. The experimental results show that in the low pressure methane-oxygene flame nearly complete removal of the added NO and intermediate formation of CN occurs in the main reaction zone. Furthermore, partial reappearance of NO in the flue gas was observed. In flame structure computations it was not possible to reproduce the experimentally determined NO and CN profiles using the currently available kinetic data on reburn reactions. Further experimental and theoretical studies on the CH1 + NO reactions are therefore required.

AB - A low pressure (10 Torr) stoichiometric CH4/O2 flame seeded with NO was investigated using LIF, REMPI and laser absorption spectroscopy. Relative concentration frofiles of OH, CH, CN and the temperature profile were obtained by laser-induced fluorescence. Relative concentration profiles of CH3 radicals were detected using the REMPI technique. Multipath absorption measurements were used to obtain absolute NO concentrations. The experimental results show that in the low pressure methane-oxygene flame nearly complete removal of the added NO and intermediate formation of CN occurs in the main reaction zone. Furthermore, partial reappearance of NO in the flue gas was observed. In flame structure computations it was not possible to reproduce the experimentally determined NO and CN profiles using the currently available kinetic data on reburn reactions. Further experimental and theoretical studies on the CH1 + NO reactions are therefore required.

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DO - 10.1016/S0082-0784(06)80110-4

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EP - 932

JO - Symposium (International) on Combustion

JF - Symposium (International) on Combustion

SN - 0082-0784

IS - 1

ER -

Destruction and formation of no in low pressure stoichiometric CH4/O2 flames

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