Experimental and Modeling Study of the Effect of CF3CHFCF3on the Chemical Structure of a Methane—Oxygen—Argon Flame
| Autor: | Robert Akrich, Oumar Sanogo, Jean-Louis Delfau, Christian Vovelle |
|---|---|
| Rok vydání: | 1997 |
| Předmět: |
Reaction mechanism
Argon Chemistry General Chemical Engineering Inorganic chemistry Flame structure Analytical chemistry General Physics and Astronomy Energy Engineering and Power Technology chemistry.chemical_element General Chemistry Combustion Mole fraction Methane chemistry.chemical_compound Fuel Technology Combustor Stoichiometry |
| Zdroj: | Combustion Science and Technology. 122:33-62 |
| ISSN: | 1563-521X 0010-2202 |
| DOI: | 10.1080/00102209708935604 |
| Popis: | The chemical structure of stoichiometric methane–oxygen–argon flames seeded or not with 1% heptafluoropropane (CF3CHFCF3) was measured by the molecular beam-mass spectrometry technique. Both flames were stabilized on a water-cooled flat-flame burner under low pressure (4.2 kPa). Mole fraction profiles were computed by a simulation code as well. Modeling of the unseeded flame was performed with an updated version of a mechanism issued from Warnatz. Two submechanisms were considered to model the chemistry of fluorinated species: (i) a mechanism proposed by Westbrook to model flame inhibition by CF3Br, (ii) a modified version of (i) validated recently by Sanogo in a modeling study of the effect of C2F6 on a methane flame. Both submechanisms were compared on the basis of their reaction pathways. They have in common a key role played by CF2 in the consumption of the fluorinated additive. The consumption of this radical forms CF that is consumed very slowly with Westbrook mechanism,in contradiction with experim... |
| Databáze: | OpenAIRE |
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