Journal ArticleDOI
Relative importance of nitric oxide formation mechanisms in laminar opposed-flow diffusion flames
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TLDR
In this article, the relative importance of Fenimore and Zeldovich mechanisms for nitric oxide formation in stretched laminar opposed-flow diffusion flames with CH 4 N 2 fuel is determined using model calculations that include detailed chemical kinetics and realistic multi-component transport effects.About:
This article is published in Combustion and Flame.The article was published on 1991-01-01. It has received 113 citations till now. The article focuses on the topics: Diffusion flame & Laminar flow.read more
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Control of combustion-generated nitrogen oxide emissions: Technology driven by regulation
TL;DR: A review of existing and some emerging technologies for reduction of NOx emissions from combustion sources and examines the prospects of these technologies for meeting stricter emissions regulations is presented in this article, where both combustion modification and post-combustion methods for NOx reduction are considered.
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NOx control through reburning
L. D. Smoot,Scott C. Hill,H. Xu +2 more
TL;DR: A review of reburning technologies, measurements and mechanisms is presented in this article, where the authors also discuss predictive methods for rebURNing and their application to a comprehensive combustion model.
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Oxides of nitrogen emissions from turbulent jet flames: Part I—Fuel effects and flame radiation
TL;DR: In this article, the effects of flow parameters and fuel type on radiant losses are shown to be important in determining the NOx emissions from simple jet flames, and the results show that gas-molecular radiation is more relevant than broadband radiation from soot for determining temperatures in NO formation zones.
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Nitric oxide levels of turbulent jet diffusion flames: Effects of residence time and damkohler number☆
TL;DR: In this paper, the Damkohler number and the deviations from chemical equilibrium were varied for a number of jet diffusion flames and the resulting effects on the nitric oxide emission index were measured and compared with existing analysis.
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NO emission characteristics of methane-air double flame
TL;DR: In this article, the emission characteristics of methane-air Bunsen-type burner flames were studied numerically in terms of counterflow flame and the similarity solution was adopted to describe the flow, temperature, and concentration fields and detailed kinetics calculation was made by using C 2 chemistry with the all mechanisms leading to NO formation, including thermal and prompt NO mechanisms.
References
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Kinetic modeling and sensitivity analysis of nitrogen oxide formation in well-stirred reactors
TL;DR: In this article, a method to calculate the first-order sensitivities of the mole fractions and temperature with respect to the rate constants is discussed and applied to nitric oxide production in the presence of hydrocarbons.
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Counterflow diffusion flames
TL;DR: Laminar counterflow diffusion flames are generally referred to as the pure diffusion flame as discussed by the authors, and they can be classified into four types: (i) counterflow between two opposed jets, (ii) flat, counter-flow diffusion flame between two matrix burners, (iii) counter flow diffusion flame in the forward stagnation region of a spherical or hemispherical porous burner, and (iv) the counterflow diffuser flame in a cylindrical porous burner.
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Measurement of High Gas Temperatures with Fine Wire Thermocouples
Derek Bradley,K. J. Matthews +1 more
TL;DR: The recent advent of reliable thermocouple pairs of high melting point has provided new capabilities for high temperature gas measurement as discussed by the authors, and the errors involved in such measurements using fine wire t...
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Superequilibrium and thermal nitric oxide formation in turbulent diffusion flames
TL;DR: In this paper, the formation of superequilibrium radicals and nitric oxide in atmospheric pressure turbulent jet diffusion flames are presented. But the authors do not quantify the influence of the supe-requilibrium on thermal NO x formation.
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Nitric oxide formation from N2 in flames: The importance of “prompt” NO
Allan N. Hayhurst,I.M. Vince +1 more
TL;DR: The main way of producing NOx in flames (the so-called Zel'dovich mechanism x) is relatively slow, the interaction between turbulence and chemical kinetics can be important as mentioned in this paper.