Mild Combustion of Methane-Derived Fuel Mixtures: Natural Gas and Biogas

Effuggi, Alessandro; Gelosa, D.; Derudi, Marco; Rota, Renato

doi:10.1080/00102200701741368

Cited by 72 publications

(52 citation statements)

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“…La temperatura de las paredes de la cámara de combustión debe permanecer mayor a la temperatura de autoignición del combustible que se está utilizando, así por ejemplo, para el metano cuya temperatura de autoignición es 580 ºC, el rango mínimo de temperatura a que deben permanecer las paredes está entre 800 ºC y 850 ºC (Effuggi et al, 2008).…”

Section: Condiciones Para Obtención De La Combustión Sin Llamaunclassified

“…Effuggi et al (2008) encontraron que para generar el fenómeno de combustión sin llama se requieren factores de recirculación entre 4 y 10. Este factor se define como el cociente entre el flujo másico de productos de combustión recirculados y la suma de los flujos másicos de aire y combustible.…”

Section: Condiciones Para Obtención De La Combustión Sin Llamaunclassified

“…Se caracteriza porque la zona de reacción ocurre en todo el volumen de la cámara de combustión, sin la formación de frente de llama, ni ocurrencia de gradientes de temperatura significativos. Con la combustión sin llama se logra alcanzar simultáneamente alta eficiencia energética y muy reducidas emisiones de óxidos nitrosos (NOx) y monóxido de carbono (CO), así como calentamiento más uniforme, entre otras ventajas (Lupant et al, 2007;Szegö et al, 2008;Effuggi et al, 2008).…”

Section: Introductionunclassified

“…Si bien en los últimos diez años la combustión sin llama ha sido intensamente estudiada, aun su fenomenología y características no han sido del todo comprendidas (Effuggi et al, 2008;Szegö et al, 2008). Sin embargo, el desarrollo tecnológico de equipos de combustión y calentamiento que operan en este nuevo régimen de combustión se ha incrementado significativamente y cada día se identifican nuevos campos para su aplicación (Szegö et al, 2008).…”

Section: Introductionunclassified

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Metodología para el Desarrollo de Sistemas de Combustión Sin Llama

et al. 2010

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ResumenEste trabajo presenta el desarrollo de una metodología para el diseño de equipos de calentamiento de combustión sin llama. El diseño de equipos de combustión sin llama requiere de metodologías apropiadas que garanticen las condiciones necesarias para alcanzar este modo de combustión. No obstante, estas metodologías no se encuentran disponibles en la literatura científica. Para esto se ha empleado la combinación del escalamiento dinámico, en función de la relación de impulsos de aire/gas, y el uso de la simulación numérica con el software FLUENT® para obtener configuraciones y dimensiones geométricas adecuadas para la descarga del combustible y comburente. La metodología desarrollada ha sido aplicada en el diseño de un horno experimental de 20 kW que utiliza gas natural, verificándose experimentalmente su validez con la obtención del régimen de combustión sin llama de forma estable. Palabras clave: combustión sin llama, equipos de calentamiento, transferencia de calor, simulación numérica Methodology to Develop Flameless Combustion Devices AbstractA methodology to design flameless combustion heating equipment is presented. The design of flameless combustion devices requires an appropriate methodology to guarantee the necessary conditions to obtain this combustion mode. Nevertheless, such methodologies are not available in the scientific literature. For this, a combination of dynamic scaling, based on air/gas impulse ratio, and numerical simulation with FLUENT® has been employed to get suitable geometric configurations and dimensions for discharging fuel and comburent air. The proposed methodology has been applied to the design of a 20 kW experimental furnace using natural gas as fuel. The validity of the methodology has been verified with stable flameless combustion operation in the furnace.

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Section: Condiciones Para Obtención De La Combustión Sin Llamaunclassified

Section: Introductionunclassified

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Metodología para el Desarrollo de Sistemas de Combustión Sin Llama

et al. 2010

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“…The temperature and composition of combustion product gases are also important parameters in equipment design of biogas system. Previous researches had studied the combustion characteristic of biogas, many researchers studied the combustion performance of biogas in internal combustion SI and CI engine [8,[12][13][14][15][16][17][18][19][20], the characteristics in microgas turbine [21][22][23] and also specifically on the characteristics in biogas burner [5,[24][25][26][27][28][29][30]. Largely, the previous researches of combustion in biogas burner were done in a certain methane content of biogas, i.e.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Product and Temperature of Biogas Combustion in Various Air Biogas Equivalence Ratio and Methane Content

Wresta

Saepudin

2018

Indones. J. Chem.

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Biogas resulted from anaerobic digestion of organic compounds have various methane content depend on the type of the degraded material. The methane content of biogas is range between 40–80% that influence the heating value and combustion characteristic of that biogas. The higher methane content can be obtained through upgrading biogas by removing CO2 and other trace components like H2S, NH3, and water vapor. This research was a simulation of product composition and temperature of biogas combustion in various methane content and air biogas equivalence ratio. Biogas combustion was done in combustion chamber at constant pressure of 1 atm. Biogas and air enter into combustion chamber at temperature approximately of 30 °C as the common ambient temperature in Indonesia. The input air was designed higher than stoichiometric need in order to reach complete combustion. Combustion reaction between methane and O2 then carried out in the combustion chamber to produce CO2 and H2O. The product gases consisting of CO2, H2O, N2, and excess O2, bring heat from combustion reaction and exit from combustion chamber at the higher temperature. The analysis was done for methane content range between 20 and 100% with air biogas equivalence ratio from 1 until 3. The simulation result showed that for V m3 biogas, the combustion gases could reach 0.12271 until 1.26798V gmol with temperature above 700 °C until above 1900 °C. More than 50% component in the combustion gases is N2 as inert material from input air to combustion chamber.

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Flameless combustion role in the mitigation of NO_Xemission: a review

Abuelnuor

Wahid

Mohammed

et al. 2014

Int. J. Energy Res.

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SUMMARYNitrogen oxide formation is one source of pollution emission in fossil fuel combustion. Numerous technologies, such as flameless combustion, have been introduced to prevent such formation. This paper presents a panorama of flameless combustion and its principles. The influence of this technology on air preheats and gas diluents is discussed, as well as the effect of the firing mode on thermal NO X . The benefits of flameless combustion, including its energy conservation capability and capability to reduce pollutant emissions such as NO X emission to overcome environmental dilemmas in combustion, are discussed in this paper.

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Mild Combustion of Methane-Derived Fuel Mixtures: Natural Gas and Biogas

Cited by 72 publications

References 6 publications

Metodología para el Desarrollo de Sistemas de Combustión Sin Llama

Metodología para el Desarrollo de Sistemas de Combustión Sin Llama

Analysis of Product and Temperature of Biogas Combustion in Various Air Biogas Equivalence Ratio and Methane Content

Flameless combustion role in the mitigation of NO_Xemission: a review

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Mild Combustion of Methane-Derived Fuel Mixtures: Natural Gas and Biogas

Cited by 72 publications

References 6 publications

Metodología para el Desarrollo de Sistemas de Combustión Sin Llama

Metodología para el Desarrollo de Sistemas de Combustión Sin Llama

Analysis of Product and Temperature of Biogas Combustion in Various Air Biogas Equivalence Ratio and Methane Content

Flameless combustion role in the mitigation of NOXemission: a review

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Flameless combustion role in the mitigation of NO_Xemission: a review