LrgpV1, Hal, Corpus, bibRecord, 000472

Experimental and modeling study of premixed laminar flames of ethanol and methane

Identifieur interne : 000472 ( Hal/Corpus ); précédent : 000471; suivant : 000473

Experimental and modeling study of premixed laminar flames of ethanol and methane

Auteurs : Luc Sy Tran ; Pierre-Alexandre Glaude ; René Fournet ; Frederique Battin-Leclerc

Source :

Energy and Fuels [ 0887-0624 ] ; 2013-04-18.

RBID : Hal:hal-00866205

English descriptors

mix :
- Acetone, Argon, Branching ratio, Ethanol, Fuels, Gas chromatography, Laminar burning velocity, Laminar premixed flames, Methane, Modeling studies, Online gas chromatography, Premixed laminar flames, Reaction pathways, Theoretical calculations, combustion.

Abstract

To better understand the chemistry of the combustion of ethanol, the structure of five low pressure laminar premixed flames has been investigated: a pure methane flame (φ = 1), three pure ethanol flames (φ = 0.7, 1.0, and 1.3), and an ethanol/methane mixture flame (φ = 1). The flames have been stabilized on a burner at a pressure of 6.7 kPa using argon as a dilutant, with a gas velocity at the burner of 64.3 cm/s at 333 K. The results consist of mole fraction profiles of 20 species measured as a function of the height above the burner by probe sampling followed by online gas chromatography analyses. A mechanism for the oxidation of ethanol was proposed. The reactions of ethanol and acetaldehyde were updated and include recent theoretical calculations while that of ethenol, dimethyl ether, acetone, and propanal were added in the mechanism. This mechanism was also tested against experimental results available in the literature for laminar burning velocities and laminar premixed flame where ethenol was detected. The main reaction pathways of consumption of ethanol are analyzed. The effect of the branching ratios of reaction C 2H5OH + OH → Products + H2O is also discussed.

Url:

https://hal.archives-ouvertes.fr/hal-00866205

DOI: 10.1021/ef301628x

Links to Exploration step

Hal:hal-00866205

Le document en format XML

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<idno type="DOI">10.1021/ef301628x</idno>
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<term>Gas chromatography</term>
<term>Laminar burning velocity</term>
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<term>Modeling studies</term>
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<front><div type="abstract" xml:lang="en">To better understand the chemistry of the combustion of ethanol, the structure of five low pressure laminar premixed flames has been investigated: a pure methane flame (φ = 1), three pure ethanol flames (φ = 0.7, 1.0, and 1.3), and an ethanol/methane mixture flame (φ = 1). The flames have been stabilized on a burner at a pressure of 6.7 kPa using argon as a dilutant, with a gas velocity at the burner of 64.3 cm/s at 333 K. The results consist of mole fraction profiles of 20 species measured as a function of the height above the burner by probe sampling followed by online gas chromatography analyses. A mechanism for the oxidation of ethanol was proposed. The reactions of ethanol and acetaldehyde were updated and include recent theoretical calculations while that of ethenol, dimethyl ether, acetone, and propanal were added in the mechanism. This mechanism was also tested against experimental results available in the literature for laminar burning velocities and laminar premixed flame where ethenol was detected. The main reaction pathways of consumption of ethanol are analyzed. The effect of the branching ratios of reaction C 2H5OH + OH → Products + H2O is also discussed.</div>
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<author role="aut"><persName><forename type="first">René</forename>
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<author role="crp"><persName><forename type="first">Frederique</forename>
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<textClass><keywords scheme="author"><term xml:lang="en">Branching ratio</term>
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<term xml:lang="en">Laminar premixed flames</term>
<term xml:lang="en">Modeling studies</term>
<term xml:lang="en">Online gas chromatography</term>
<term xml:lang="en">Premixed laminar flames</term>
<term xml:lang="en">Reaction pathways</term>
<term xml:lang="en">Theoretical calculations</term>
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<term xml:lang="en">Acetone</term>
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<abstract xml:lang="en">To better understand the chemistry of the combustion of ethanol, the structure of five low pressure laminar premixed flames has been investigated: a pure methane flame (φ = 1), three pure ethanol flames (φ = 0.7, 1.0, and 1.3), and an ethanol/methane mixture flame (φ = 1). The flames have been stabilized on a burner at a pressure of 6.7 kPa using argon as a dilutant, with a gas velocity at the burner of 64.3 cm/s at 333 K. The results consist of mole fraction profiles of 20 species measured as a function of the height above the burner by probe sampling followed by online gas chromatography analyses. A mechanism for the oxidation of ethanol was proposed. The reactions of ethanol and acetaldehyde were updated and include recent theoretical calculations while that of ethenol, dimethyl ether, acetone, and propanal were added in the mechanism. This mechanism was also tested against experimental results available in the literature for laminar burning velocities and laminar premixed flame where ethenol was detected. The main reaction pathways of consumption of ethanol are analyzed. The effect of the branching ratios of reaction C 2H5OH + OH → Products + H2O is also discussed.</abstract>
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Experimental and modeling study of premixed laminar flames of ethanol and methane

Experimental and modeling study of premixed laminar flames of ethanol and methane

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