Experimental study of the combustion of natural gas and high-hydrogen content syngases in a radiant porous media burner

Arrieta, Carlos E.; García, Alex M.; Amell, Andrés

doi:10.1016/j.ijhydene.2017.03.078

Cited by 41 publications

(10 citation statements)

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“…Also, with the insertion of porous media, an increase in heat transfer accelerated the combustion process. Inspired by Alavandi and Agrawal, 40 Arrieta et al 42 studied the combustion of mixtures of methane and syngas inside a porous burner. Their experiments were focused on the emissions of CO and NO x , flame stability response to assigned thermal power, and the effects of volume fraction of the syngas mixtures under steady-state conditions.…”

Section: Introductionmentioning

confidence: 99%

“…Their experiments were focused on the emissions of CO and NO x , flame stability response to assigned thermal power, and the effects of volume fraction of the syngas mixtures under steady-state conditions. Arrieta et al 42 used methane as the basic fuel for all tests where the hydrogen to carbon monoxide ratio was varied. It was concluded that the addition of hydrogen-rich syngas to methane did not impact the flame stability or temperature profile drastically.…”

Section: Introductionmentioning

confidence: 99%

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On the Response of Ultralean Combustion of CH₄/H₂ Blends in a Porous Burner to Fluctuations in Fuel Flow—an Experimental Investigation

et al. 2021

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Fluctuations in the fuel flow rate may occur in practical combustion systems and result in flame destabilization. This is particularly problematic in lean and ultralean modes of burner operation. In this study, the response of a ceramic porous burner to fluctuations in the flow rate of different blends of methane and hydrogen is investigated experimentally. Prior to injection into the porous burner, the fuel blend is premixed with air at equivalence ratios below 0.275. The fuel streams are measured and controlled separately by programmable mass flow controllers, which impose sinusoidal fluctuations on the flow rates. To replicate realistic fluctuations in the fuel flow rate, the period of oscillations is chosen to be on the order of minutes. The temperature inside the ceramic foam is measured using five thermocouples located at the center of the working section of the burner. The flame embedded in porous media is imaged while the fuel flow is modulated. Analysis of the flame pictures and temperature traces shows that the forced oscillation of the fuel mixture leads to flame movement within the burner. This movement is found to act in accordance with the fluctuations in methane and hydrogen flows for both CH 4 (90%)–H 2 (10%) and CH 4 (70%)–H 2 (30%) mixtures. However, both fuel mixtures are noted to be rather insensitive to hydrogen flow fluctuation with a modulation amplitude below 30% of the steady flow. For the CH 4 (70%)–H 2 (30%) mixture, the flame in the porous medium can be modulated by fluctuations between 0 and 30% of steady methane flow without any noticeable flame destabilization.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

On the Response of Ultralean Combustion of CH₄/H₂ Blends in a Porous Burner to Fluctuations in Fuel Flow—an Experimental Investigation

et al. 2021

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“…The influence of operating parameters on flammability limits and pollutant concentrations was studied by Makmool et al 16 They concluded that the dominant heat transfer mechanism is convection. Arrieta et al 17 reported that they did their experiments on a radiant porous burner. They used natural gas and the blending of natural gas.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of premixed combustion and thermal efficiency in a porous heating burner

Omidi

Emami

2020

Int J Energy Res

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Summary In the present research, thermal efficiency and the amount of pollutant emissions of a metallic porous burner with a heat exchanger were investigated experimentally. A very important issue about these burners is the stability of flame on the surface of the porous medium. In the present research, through creating a surface flame in the porous medium, the performance of the burner was observed. In this article, by changing the factors like thermal power and equivalence ratio, thermal efficiency and the amount of pollutants were studied. Results showed that the best performance of the burner occurred when the equivalence ratio was 0.8. The maximum thermal efficiency of 39.43% occurred at an equivalence ratio of 0.8 and thermal power of 100 kW. As thermal power increased, the amount of emitted nitric oxide (NOx) increased. Approximately at all measured conditions, the amount of emitted NOx was less than 15 ppm. Also, the amount of emission carbon monoxide (CO) at an equivalence ratio of 0.8 and thermal power of 100 kW was the lowest. In this research, results of the porous burner were compared to the free flame burner and the results revealed that in the best condition, thermal efficiency was improved up to 5.8%. Accordingly, the amount of emitted NOx was reduced strongly but the amount of CO of the porous burner was much more than the open flame burner.

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“…В связи с этим очень важно модифицировать конструкцию ИК-горелки низкого давления. Остановимся на теоретических аспектах данной проблемы [1][2][3][4][5][6][7][8][9][10][11][12][13][14].…”

Section: Introductionunclassified

Calculation of infrared heating burners of a micronizer using biomethane

Afanas'ev¹,

Остриков

Bogomolov³

et al. 2020

Vestn. Voronež. gos. univ. inž. tehnol.

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Studies have been carried out on the purification of biogas from sulfur compounds, carbon dioxide and water vapor for subsequent use in micronizer burners. The possibility of bringing it to the parameters of natural gas of the following composition: methane (CH4) – 85 % vol., carbon dioxide СО2 – 11 % vol., water vapor – 9 mg/m3, hydrogen sulfide H2S - 20 mg/m3 with minimal energy costs for its preparation is demonstrated. The basic relationships are obtained for assessing the design and technological parameters of the infrared radiation burners operation. Experimental studies of the flame stability limits on perforated ceramic nozzles have shown that flashback through them is possible when the thermal power is increased to a certain critical value. In this case, the thermal power depends on the type of gas and the air content in the combustible mixture. The heat balance equations have been derived to optimize the designs and operation modes of infrared radiation burners. The design of 40 gas burners was improved by changing the geometric dimensions and shape for a uniform distribution of biogas supplied and sustainable combustion over the entire area of the burner. It was established that the temperature of the heating surface of the GIK-8 burner on gas mixtures with a CO2 content of 18-34 % is 900-950 ° C, which does not differ from the nominal temperature when operating on natural gas. The infrared heating system was modernized, adapted for burning purified biogas with methane content up to 98 %, in particular, the biomethane feed and control system, the additional biogas input system, and the automatic burner control system were improved.

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Experimental study of the combustion of natural gas and high-hydrogen content syngases in a radiant porous media burner

Cited by 41 publications

References 41 publications

On the Response of Ultralean Combustion of CH₄/H₂ Blends in a Porous Burner to Fluctuations in Fuel Flow—an Experimental Investigation

On the Response of Ultralean Combustion of CH₄/H₂ Blends in a Porous Burner to Fluctuations in Fuel Flow—an Experimental Investigation

Experimental investigation of premixed combustion and thermal efficiency in a porous heating burner

Calculation of infrared heating burners of a micronizer using biomethane

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Experimental study of the combustion of natural gas and high-hydrogen content syngases in a radiant porous media burner

Cited by 41 publications

References 41 publications

On the Response of Ultralean Combustion of CH4/H2 Blends in a Porous Burner to Fluctuations in Fuel Flow—an Experimental Investigation

On the Response of Ultralean Combustion of CH4/H2 Blends in a Porous Burner to Fluctuations in Fuel Flow—an Experimental Investigation

Experimental investigation of premixed combustion and thermal efficiency in a porous heating burner

Calculation of infrared heating burners of a micronizer using biomethane

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Product

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On the Response of Ultralean Combustion of CH₄/H₂ Blends in a Porous Burner to Fluctuations in Fuel Flow—an Experimental Investigation

On the Response of Ultralean Combustion of CH₄/H₂ Blends in a Porous Burner to Fluctuations in Fuel Flow—an Experimental Investigation