Comprehensive kinetic study on ammonia/ethylene counter-flow diffusion flames: influences of diluents
Abstract This study aimed to investigate the effects of ammonia addition on ethylene counter-flow diffusion flames with different diluents on the fuel or oxidizer side, using kinetic analyses. A special emphasis was put on assessing the coupled chemical effects of NH3 and CO2 on C2H4 combustion chem...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2024-03-01
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| Series: | International Journal of Coal Science & Technology |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/s40789-024-00663-3 |
| _version_ | 1797259600048685056 |
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| author | Zhimei Shu Tingting Xu Jiayi Xiao Qige Deng Xuan Zhao Tianjiao Li Yaoyao Ying Dong Liu |
| author_facet | Zhimei Shu Tingting Xu Jiayi Xiao Qige Deng Xuan Zhao Tianjiao Li Yaoyao Ying Dong Liu |
| author_sort | Zhimei Shu |
| collection | DOAJ |
| description | Abstract This study aimed to investigate the effects of ammonia addition on ethylene counter-flow diffusion flames with different diluents on the fuel or oxidizer side, using kinetic analyses. A special emphasis was put on assessing the coupled chemical effects of NH3 and CO2 on C2H4 combustion chemistry. The chemical effects could be evaluated by comparing fictitious inert NH3 or CO2 with normal active NH3 or CO2. The results revealed that the addition of NH3 decreased the mole fractions and production rates of key soot precursors, such as acetylene, propynyl, and benzene. When CO2 was used as the dilution gas, the coupled chemical effects of NH3 and CO2 were affected by the chemical effects of CO2 to varying degrees. With the oxidizer-side CO2 addition, the coupled chemical effects of NH3 and CO2 reduced the mole fractions of H, O, OH radicals, acetylene, propynyl, and benzene, while the effects differed from the fuel-side CO2 addition. The coupled chemical effects of NH3 and CO2 also promoted the formation of aldehyde contaminants, such as acetaldehyde, to some extent, particularly with CO2 addition on the oxidizer side. |
| first_indexed | 2024-04-24T23:12:00Z |
| format | Article |
| id | doaj.art-d0880e7a61814d1c813329fd4b1dfdc4 |
| institution | Directory Open Access Journal |
| issn | 2095-8293 2198-7823 |
| language | English |
| last_indexed | 2024-04-24T23:12:00Z |
| publishDate | 2024-03-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | International Journal of Coal Science & Technology |
| spelling | doaj.art-d0880e7a61814d1c813329fd4b1dfdc42024-03-17T12:11:44ZengSpringerOpenInternational Journal of Coal Science & Technology2095-82932198-78232024-03-0111111810.1007/s40789-024-00663-3Comprehensive kinetic study on ammonia/ethylene counter-flow diffusion flames: influences of diluentsZhimei Shu0Tingting Xu1Jiayi Xiao2Qige Deng3Xuan Zhao4Tianjiao Li5Yaoyao Ying6Dong Liu7MIIT Key Laboratory of Thermal Control of Electronic Equipment, School of Energy and Power Engineering, Nanjing University of Science and TechnologyMIIT Key Laboratory of Thermal Control of Electronic Equipment, School of Energy and Power Engineering, Nanjing University of Science and TechnologyMIIT Key Laboratory of Thermal Control of Electronic Equipment, School of Energy and Power Engineering, Nanjing University of Science and TechnologyMIIT Key Laboratory of Thermal Control of Electronic Equipment, School of Energy and Power Engineering, Nanjing University of Science and TechnologyMIIT Key Laboratory of Thermal Control of Electronic Equipment, School of Energy and Power Engineering, Nanjing University of Science and TechnologyMIIT Key Laboratory of Thermal Control of Electronic Equipment, School of Energy and Power Engineering, Nanjing University of Science and TechnologyMIIT Key Laboratory of Thermal Control of Electronic Equipment, School of Energy and Power Engineering, Nanjing University of Science and TechnologyMIIT Key Laboratory of Thermal Control of Electronic Equipment, School of Energy and Power Engineering, Nanjing University of Science and TechnologyAbstract This study aimed to investigate the effects of ammonia addition on ethylene counter-flow diffusion flames with different diluents on the fuel or oxidizer side, using kinetic analyses. A special emphasis was put on assessing the coupled chemical effects of NH3 and CO2 on C2H4 combustion chemistry. The chemical effects could be evaluated by comparing fictitious inert NH3 or CO2 with normal active NH3 or CO2. The results revealed that the addition of NH3 decreased the mole fractions and production rates of key soot precursors, such as acetylene, propynyl, and benzene. When CO2 was used as the dilution gas, the coupled chemical effects of NH3 and CO2 were affected by the chemical effects of CO2 to varying degrees. With the oxidizer-side CO2 addition, the coupled chemical effects of NH3 and CO2 reduced the mole fractions of H, O, OH radicals, acetylene, propynyl, and benzene, while the effects differed from the fuel-side CO2 addition. The coupled chemical effects of NH3 and CO2 also promoted the formation of aldehyde contaminants, such as acetaldehyde, to some extent, particularly with CO2 addition on the oxidizer side.https://doi.org/10.1007/s40789-024-00663-3Ammonia additionDiluentsCoupled chemical effectsKinetic analysis |
| spellingShingle | Zhimei Shu Tingting Xu Jiayi Xiao Qige Deng Xuan Zhao Tianjiao Li Yaoyao Ying Dong Liu Comprehensive kinetic study on ammonia/ethylene counter-flow diffusion flames: influences of diluents International Journal of Coal Science & Technology Ammonia addition Diluents Coupled chemical effects Kinetic analysis |
| title | Comprehensive kinetic study on ammonia/ethylene counter-flow diffusion flames: influences of diluents |
| title_full | Comprehensive kinetic study on ammonia/ethylene counter-flow diffusion flames: influences of diluents |
| title_fullStr | Comprehensive kinetic study on ammonia/ethylene counter-flow diffusion flames: influences of diluents |
| title_full_unstemmed | Comprehensive kinetic study on ammonia/ethylene counter-flow diffusion flames: influences of diluents |
| title_short | Comprehensive kinetic study on ammonia/ethylene counter-flow diffusion flames: influences of diluents |
| title_sort | comprehensive kinetic study on ammonia ethylene counter flow diffusion flames influences of diluents |
| topic | Ammonia addition Diluents Coupled chemical effects Kinetic analysis |
| url | https://doi.org/10.1007/s40789-024-00663-3 |
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