Study on the N2O Formation under Low Temperature Condition in Pulverized Biomass Combustion
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- OKUMURA Yukihiko
- Department of Control Engineering, Maizuru National College of Technology
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- WATANABE Hirotatsu
- Department of Mechanical and Control Engineering, Tokyo Institute of Technology
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- OKAZAKI Ken
- Department of Mechanical and Control Engineering, Tokyo Institute of Technology
抄録
The purpose of this study is to clarify the fundamental and general features of N2O formation during the combustion of pulverized biomass under low temperature. First, the effect of various important factors, i.e., combustion temperature, volatilization process (i.e., either slow or rapid dispersion), and nitrogen content in biomass on N2O formation were investigated by theoretical analysis. The analysis of the effect of combustion temperature on the formation of nitrous oxide showed that N2O emission level increases with the decrease in combustion temperature, and both N2O and NO levels are strongly dependent on the combustion temperature. In other words, there is a trade-off relationship between the formation of NO and that of N2O. The analysis of the effect of the slow/rapid volatilization process on the formation of nitrous oxide showed that the conversion ratio of biomass-N to N2O increases with the decrease in the dispersion of volatile matter per unit time; it means that biomass-N is effectively converted to N2O during slow volatilization. Further, the gasification reactions between CO2, O2, and C occur simultaneously on the surface of biomass particles during combustion. With respect to the effect of nitrogen content in biomass, the N2O emission level increases with the increase in N-content of the biomass, while the NO emission level remains constant during low-temperature combustion.
収録刊行物
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- Journal of Thermal Science and Technology
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Journal of Thermal Science and Technology 7 (1), 75-89, 2012
一般社団法人日本機械学会・社団法人日本伝熱学会
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詳細情報 詳細情報について
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- CRID
- 1390001205246765952
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- NII論文ID
- 130002068981
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- ISSN
- 18805566
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- Crossref
- CiNii Articles
- KAKEN
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- 抄録ライセンスフラグ
- 使用不可