Formation and consumption of NO in H2 + O2 + N2 flames doped with NO or NH3 at atmospheric pressure |
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| Authors: | AG Shmakov OP Korobeinichev IV Rybitskaya AA Chernov DA Knyazkov TA Bolshova AA Konnov |
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| Affiliation: | 1. Institute of Chemical Kinetics and Combustion, Novosibirsk, Russian Federation;2. Novosibirsk State University, Novosibirsk, Russian Federation;3. Division of Combustion Physics, Lund University, Lund, Sweden;1. IDMEC, Mechanical Engineering Department, Instituto Superior Técnico, University of Lisboa, Lisboa, Portugal;2. Physico Chemical Fundamentals of Combustion, RWTH Aachen University, 52056 Aachen, Germany;3. Flemish Institute of Technological Research (VITO), Boeretang 200, 2400 Mol, Belgium;4. Physikalisch Technische Bundesanstalt, Bundesallee 100, 38116 Braunschweig, Germany;1. Department of Chemical Engineering, Nagoya University, Nagoya, Aichi 464-8603, Japan;2. Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou, 510640, China;3. College of Science and Engineering, Kanazawa University, Kanazawa, Ishikawa 920-1192, Japan |
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| Abstract: | Flat premixed burner-stabilized H2 + O2 + N2 flames, neat or doped with 300–1000 ppm of NO or NH3, were studied experimentally using molecular-beam mass-spectrometry and simulated numerically. Spatial profiles of temperature and concentrations of stable species, H2, O2, H2O, NO, NH3, and of H and OH radicals obtained at atmospheric pressure in lean (? = 0.47), near-stoichiometric (? = 1.1) and rich (? = 2.0) flames are reported. Good agreement between measured and calculated structure of lean and near-stoichiometric flames was found. Significant discrepancy between simulated and measured profiles of NO concentration was observed in the rich flames. Sensitivity and reaction path analyses revealed reactions responsible for the discrepancy. Modification to the model was proposed to improve an overall agreement with the experiment. |
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