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Etude expérimentale de l'influence des mélanges gazeux sur la combustion sans flamme

Abstract : An experimental study of the influence of the aerodynamic mixing on flameless combustion regime has been carried out on the CORIA lab-scale facility with the collaboration of GDF SUEZ. A detailed characterisation of this innovating combustion mode, using pure methane as fuel, with and without air preheating is the first part of this study. Temperature and stable species concentrations measurements have been performed with fine wire thermocouple and sampling probe. Imaging techniques have been developed and adapted for in-furnace measurements: OH* chemiluminescence imaging for reaction zone visualization and endoscopic PIV in order to obtain large dimensions velocity fields in spite of the confinement. The results enable us to put in evidence the leading role of aerodynamic of the turbulent jets to ensure the stabilisation of this massive diluted combustion regime. The second part of this study concerns the use of hydrogen as fuel in the pilot furnace operating in flameless combustion regime. The main characteristics of this combustion regime have been found again: high efficiency and very low pollutant emissions (CO and NOx) associated to CO2 emissions reduction while increasing content of hydrogen in the fuel. With pure hydrogen and without air preheating, the furnace produces no carbon-species and nearly no NOx, condition close to a “zero-emission” furnace.
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  • HAL Id : tel-00557903, version 1

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Christiane Rottier. Etude expérimentale de l'influence des mélanges gazeux sur la combustion sans flamme. Autre [cond-mat.other]. INSA de Rouen, 2010. Français. ⟨NNT : 2010ISAM0003⟩. ⟨tel-00557903⟩

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