NOx reduction based on N2 dilution in a swirled-stabilized magnesium flame

Andrieu, Adeline; Allgaier, Olivier; Leyssens, Gontrand; Schönnenbeck, Cornélius; Brilhac, Jean-François; Legros, Guillaume; Tschamber, Valérie

doi:10.1016/j.fuel.2023.127702

Cited by 4 publications

(1 citation statement)

References 25 publications

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“…27 Consequently, addressing NO x emissions control during combustion processes remains an unresolved issue. Andrieu et al 28 investigated the impact of the exhaust gas recirculation (EGR) technique on NO x emissions under N 2 dilution conditions in a swirled-stabilized magnesium flame. They highlighted that the addition of N 2 reduces the combustion temperature, thereby restricting NO x emissions.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Study on the Effects of N₂ and NH₃ in NH₃/Syngas/Air Laminar Premixed Flame

Wen,

Zhu,

Zeng

et al. 2024

Energy Fuels

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Blending syngas with ammonia (NH3) effectively overcomes the high minimum ignition energy and low laminar burning velocity (S L) of NH3, facilitating the realistic application of NH3 as a fuel for gas turbines. Thus, the present study combines experiments and numerical simulations to investigate the impacts of diluent N2 (0–60%) and NH3 (25–50%) on NH3/syngas/air flames. The analysis suggests that increasing N2 and NH3 content, respectively, results in a decrease in the S L of the mixture. At Φ = 1.0, as the N2 content increases from 0 to 60%, the S L of the mixture decreases from 80.1 to 28.3 cm/s. The S L decreases from 80.1 to 36.4 cm/s as the NH3 content increases from 25 to 50%. The increase in N2 content decreases the maximum mole fractions of H, OH, and O radicals, and the net reaction rates of chain reactions also decrease. The net reaction rate of H + O2 = O + OH at Z N2 = 60% decreases by 85.8% compared to 0.018 (mol/cm3 s) at Z N2 = 0% at Φ = 1.0. As NH3 content increases, the impact of chain reactions associated with the NH3 reaction mechanism on the combustion process becomes more pronounced. With the increase in NH3 content, the ratio of chemical effect to physical effect initially increases and then decreases, reaching a maximum value of 25.4% around Z NH3 = 30%. This value is much less than 1, indicating an overall inhibitory effect. The analysis of reaction pathways and NO emissions suggests that the presence of N2 reduces NH3 consumption, which in turn reduces NO generation. The increase in NH3 content promotes the conversion of N2O to N2, simultaneously reducing NO emissions.

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Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Study on the Effects of N₂ and NH₃ in NH₃/Syngas/Air Laminar Premixed Flame

Wen,

Zhu,

Zeng

et al. 2024

Energy Fuels

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show abstract

Hydrogen addition to a commercial self-aspirating burner and assessment of a practical burner modification strategy to improve performance

Gee

Proud

Smith

et al. 2024

International Journal of Hydrogen Energy

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A numerical study of emission control strategies in an iron powder burner

Thijs,

Hazenberg,

van Oijen

et al. 2024

Proceedings of the Combustion Institute

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NOx reduction based on N2 dilution in a swirled-stabilized magnesium flame

Cited by 4 publications

References 25 publications

Experimental and Numerical Study on the Effects of N₂ and NH₃ in NH₃/Syngas/Air Laminar Premixed Flame

Experimental and Numerical Study on the Effects of N₂ and NH₃ in NH₃/Syngas/Air Laminar Premixed Flame

Hydrogen addition to a commercial self-aspirating burner and assessment of a practical burner modification strategy to improve performance

A numerical study of emission control strategies in an iron powder burner

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NOx reduction based on N2 dilution in a swirled-stabilized magnesium flame

Cited by 4 publications

References 25 publications

Experimental and Numerical Study on the Effects of N2 and NH3 in NH3/Syngas/Air Laminar Premixed Flame

Experimental and Numerical Study on the Effects of N2 and NH3 in NH3/Syngas/Air Laminar Premixed Flame

Hydrogen addition to a commercial self-aspirating burner and assessment of a practical burner modification strategy to improve performance

A numerical study of emission control strategies in an iron powder burner

Contact Info

Product

Resources

About

Experimental and Numerical Study on the Effects of N₂ and NH₃ in NH₃/Syngas/Air Laminar Premixed Flame

Experimental and Numerical Study on the Effects of N₂ and NH₃ in NH₃/Syngas/Air Laminar Premixed Flame