Modeling of nitrogen oxides formation and destruction in combustion systems

Hill, Scott C.; Smoot, L.D.

doi:10.1016/s0360-1285(00)00011-3

Cited by 567 publications

(303 citation statements)

References 133 publications

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“…Note that previous studies have shown that NO must be included in the definition of the progress of reaction variable in order to: (i) avoid errors in NO mass fraction that can be introduced when employing a progress variable defined only in terms of major species [53,54]; and (ii) properly account for time scales that differ from those of major species [55,56]. Fig.…”

Section: 1mentioning

confidence: 99%

Large-eddy simulation of lean hydrogen–methane turbulent premixed flames in the methane-dominated regime

Pérez

Groth

Gülder

2014

International Journal of Hydrogen Energy

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Section: 1mentioning

confidence: 99%

Large-eddy simulation of lean hydrogen–methane turbulent premixed flames in the methane-dominated regime

Pérez

Groth

Gülder

2014

International Journal of Hydrogen Energy

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“…The two main mechanisms of nitrogen oxides generation are Zeldovich (thermal) mechanism active above 1,700 K [34,35]:…”

Section: No Formation Mechanismsmentioning

confidence: 99%

“…Table 4 shows that, for all fuels, ammonia and hydrogen cyanide are present. It is reported [34] that HCN may be involved in the formation of around 90 % of nitric oxide via prompt mechanism. In Fig.…”

Section: No Formation Mechanismsmentioning

confidence: 99%

Combustion of Low-Calorific Waste Biomass Syngas

Kwiatkowski

Dudyński

Bajer

2013

Flow Turbulence Combust

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The industrial combustion chamber designed for burning low-calorific syngas from gasification of waste biomass is presented. For two different gases derived from gasification of waste wood chips and turkey feathers the non-premixed turbulent combustion in the chamber is simulated. It follows from our computations that for stable process the initial temperature of these fuels must be at least 800 K, with comparable influx of air and fuel. The numerical simulations reveal existence of the characteristic frequency of the process which is later observed in high-speed camera recordings from the industrial gasification plant where the combustion chamber operates. The analysis of NO formation and emission shows a difference between wood-derived syngas combustion, where thermal path is prominent, and feathersderived fuel. In the latter case thermal, prompt and N 2 O paths of nitric oxides formation are marginal and the dominant source of NO is fuel-bound nitrogen.

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“…Increasing the temperature will increase the formation of thermal NO, especially for temperature environment more than 1773 K [20]. However, the temperature is shown to have a weak influence on fuel NO in turbulent, diffusion type, PC flames [20]. This could be attributed to the offsetting effects of volatiles production and stoichiometric ratio on NO formation at different temperatures.…”

Section: Discussionmentioning

confidence: 99%

“…NO x formation may be influenced by the temperature and stoichiometric ratio in the coal flames near the burner zone. Increasing the temperature will increase the formation of thermal NO, especially for temperature environment more than 1773 K [20]. However, the temperature is shown to have a weak influence on fuel NO in turbulent, diffusion type, PC flames [20].…”

Section: Discussionmentioning

confidence: 99%

04/01975 Burning low volatile fuel in tangentially fired furnaces with fuel rich/lean burners

2004

Fuel and Energy Abstracts

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Pulverized coal combustion in tangentially fired furnaces with fuel rich/lean burners was investigated for three low volatile coals. The burners were operated under the conditions with varied value N d , which means the ratio of coal concentration of the fuel rich stream to that of the fuel lean stream. The wall temperature distributions in various positions were measured and analyzed. The carbon content in the char and NO x emission were detected under various conditions. The new burners with fuel rich/lean streams were utilized in a thermal power station to burn low volatile coal. The results show that the N d value has significant influences on the distributions of temperature and char burnout. There exists an optimal N d value under which the carbon content in the char and the NO x emission is relatively low. The coal ignition and NO x emission in the utilized power station are improved after retrofitting the burners.

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Modeling of nitrogen oxides formation and destruction in combustion systems

Cited by 567 publications

References 133 publications

Large-eddy simulation of lean hydrogen–methane turbulent premixed flames in the methane-dominated regime

Large-eddy simulation of lean hydrogen–methane turbulent premixed flames in the methane-dominated regime

Combustion of Low-Calorific Waste Biomass Syngas

04/01975 Burning low volatile fuel in tangentially fired furnaces with fuel rich/lean burners

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