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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 fl ames 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 fl ame 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.

Tipo de documento: Artículo - Article

Información adicional: Derechos de autor reservados

Palabras clave: Laminar burning velocity, Atmospheric burner, Natural Gas, Synthesis Gas





Fuente: http://www.bdigital.unal.edu.co


Introducción



LAMINAR BURNING VELOCITY OF NATURAL GAS-SYNGAS-AIR MIXTURE VELOCIDAD DE DEFLAGRACIÓN LAMINAR DE LA MEZCLA GAS NATURAL-GAS DE SÍNTESIS CON AIRE NORMAL CÉSAR CARDONA University of Antioquia, Master of Engineering student, ccardona@udea.edu.co ANDRÉS AMELL University of Antioquia, GASURE group Coordinator, anamell@udea.edu.co HUGO BURBANO University of Antioquia, Associate Researcher, hugoburbano@udea.edu.co Recibido para revisar December 11th , 2011, aceptado March 15th, 2013, versión final March 21th, 2013. ABSTRACT: 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. KEYWORDS: Laminar burning velocity, Atmospheric burner, Natural Gas, Synthesis Gas. RESUMEN: En este estudio se propone la mezcla equimolar de gas natural (100%CH4) y gas de síntesis (40%H2 40%CO 20%CO2) como alternativa para reducir el consumo de hidrocarburos y reducir las emisiones contaminantes.
Como parámetro principal para caracterizar esta mezcla combustible, se estudió la velocidad de deflagración laminar a partir de simulaciones de cinética detallada y mediciones experimentales en llamas generadas usando un quemador de perfil contorneado e imágenes Schlieren obten...






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