Experimental and kinetic study of N2O thermal decomposition in pressurized oxy-combustion

Dai, Gaofeng; Zhang, Su; Zhang, Yixiang; Liao, Yuhan; Zhang, Jiaye; Tan, Houzhang; Mikulčić, Hrvoje; Wang, Xuebin

doi:10.1016/j.fuel.2023.128323

Cited by 9 publications

(1 citation statement)

References 30 publications

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“…Conversely, N 2 O is a significant greenhouse gas. Its global warming potential is 310 times higher than that of CO 2 . − …”

Section: Introductionmentioning

confidence: 93%

Pollutant Formation under Nitrogen and Carbon Dioxide Atmosphere of Torrefied Poplar in an Entrained Flow Reactor

Yildiz,

Richter,

Ströhle

et al. 2024

Energy Fuels

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The release behavior of sulfur (S), chlorine (Cl), and nitrogen (N) compounds contained in torrefied poplar (TP) is investigated using an entrained flow reactor. Due to the binding forms of S, Cl, and N in biomass and the high volatile content, pollutants are released during the first stage of combustion, devolatilization. Detailed knowledge of this process is essential for understanding the release and formation of pollutants. In this study, the release is investigated in a nitrogen (N 2 ) and carbon dioxide (CO 2 ) atmosphere to investigate the influence of a CO 2 -rich environment on pollutant release. The experiments are carried out at three different temperatures (T = 900, 1000 and 1100 °C). The results show that the atmosphere and temperature have a significant influence on the formation of pollutants. Corrosive gases can be expected at low temperatures and corrosive deposits can be expected at high temperatures in both atmospheres. An increasing temperature reduces the formation of sulfur dioxide (SO 2 ) and carbonyl sulfide (COS) at a residence time of 0.5 s in both atmospheres. In N 2 atmosphere, no SO 2 and COS are detected at the temperature of 1100 °C. However, both corrosive species can be expected at 1100 °C in CO 2 atmosphere. A decreasing formation of hydrogen chloride (HCl) with increasing temperature is observed in both atmospheres and residence times (0.22 and 0.5 s). In CO 2 atmosphere, less HCl is formed at temperatures of 900 and 1000 °C as in N 2 atmosphere. The nitrogen contained in the fuel is predominantly released as hydrogen cyanide (HCN) and nitric oxide (NO). A high temperature favors the formation of HCN in a N 2 atmosphere. The NO formation decreases with increasing temperature. Comparatively less HCN and NO are formed in a CO 2 atmosphere. The nitrous oxide (N 2 O) concentration decreases with increasing temperature at a residence time of 0.5 s in a CO 2 atmosphere, while the N 2 O concentration increases in a N 2 atmosphere. In the CO 2 atmosphere, a lower overall formation of nitrogen species is observed.

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“…Conversely, N 2 O is a significant greenhouse gas. Its global warming potential is 310 times higher than that of CO 2 . − …”

Section: Introductionmentioning

confidence: 93%

Pollutant Formation under Nitrogen and Carbon Dioxide Atmosphere of Torrefied Poplar in an Entrained Flow Reactor

Yildiz,

Richter,

Ströhle

et al. 2024

Energy Fuels

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NOx emission of pressurized oxy-biomass combustion: Experimental and modeling study in a pressurized entrained flow reactor

Li,

Dai,

Wang

et al. 2025

Applied Thermal Engineering

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Supported LaCoO3 perovskite-like oxides for N2O decomposition: The key role of the support nature and LaCoO3 content

Zemlianskii,

Morozov,

Kapustin

et al. 2024

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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Experimental and kinetic study of N2O thermal decomposition in pressurized oxy-combustion

Cited by 9 publications

References 30 publications

Pollutant Formation under Nitrogen and Carbon Dioxide Atmosphere of Torrefied Poplar in an Entrained Flow Reactor

Pollutant Formation under Nitrogen and Carbon Dioxide Atmosphere of Torrefied Poplar in an Entrained Flow Reactor

NOx emission of pressurized oxy-biomass combustion: Experimental and modeling study in a pressurized entrained flow reactor

Supported LaCoO3 perovskite-like oxides for N2O decomposition: The key role of the support nature and LaCoO3 content

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