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vol.80 número180DETERMINATION OF LAMINAR FLAME SPEED OF METHANE-AIR FLAMES AT SUBATMOSPHERIC CONDITIONS USING THE CONE METHOD AND CH* EMISSIONNUMERICAL CALCULATION OF THE RECIRCULATION FACTOR IN FLAMELESS FURNACES índice de autoresíndice de assuntospesquisa de artigos
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DYNA

versão impressa ISSN 0012-7353

Resumo

CARDONA, CÉSAR; AMELL, ANDRÉS  e  BURBANO, HUGO. LAMINAR BURNING VELOCITY OF NATURAL GAS/SYNGAS-AIR MIXTURE. Dyna rev.fac.nac.minas [online]. 2013, vol.80, n.180, pp.136-143. ISSN 0012-7353.

This study suggests the equimolar mixture of Natural Gas (100% CH4) and Synthesis Gas (40% H2 + 40% CO + 20% CO2) as an alternative to reduce hydrocarbons consumption and reduce pollutant emissions. As a key parameter to characterize this combustible mixture, the laminar burning velocity was studied based on numerical simulations and experimental measurements in flames generated using a contoured slot-type nozzle burner and the Schlieren technique, varying the air-fuel ratio at standard temperature and pressure. It was found that the flame speed of the equimolar mixture increases with respect to that of pure methane. This behavior can be explained by the presence of hydrogen in the fuel mixture, which has a direct effect on the combustion kinetics, generating H and OH radicals that increase the global reaction rate of the mixture and consequently the burning velocity.

Palavras-chave : Laminar burning velocity; Atmospheric burner; Natural Gas; Synthesis Gas.

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