The oxygen-deficient combustion and its effect on the NOx emission in a localized stratified vortex-tube combustor
文献类型：期刊论文
| 作者 | Ren, Shoujun1,2,3,4; Yang, Haolin1,2,4 ; Wang, Xiaohan1,2,4
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| 刊名 | ENERGY
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| 出版日期 | 2021-11-15 |
| 卷号 | 235页码:12 |
| ISSN号 | 0360-5442 |
| 关键词 | Oxygen-deficient combustion Vortex-tube combustor Ultra-lean combustion NOx emission Combustion efficiency |
| DOI | 10.1016/j.energy.2021.121365 |
| 通讯作者 | Ren, Shoujun(rensj@ms.giec.ac.cn) |
| 英文摘要 | The oxygen-deficient combustion characteristics of methane in a localized stratified vortex-tube combustor (LSVC) are studied by diluting combustion air with nitrogen. The influences of oxygen mole fraction (0.13-0.21) on flame configuration, combustion stability, combustion efficiency, and NOx emission characteristics are experimental investigated at the inlet temperature of 300 K. Combined with the numerical simulation method, the NOx generation, and emission mechanisms are analyzed in this combustor. Results show that the LSVC can achieve a wide stability limit, in which the global equivalence ratio can be as low as 0.22 at the lowest oxygen mole fraction (beta) of 0.13. To ensure high combustion efficiency, the beta should be kept above 0.16 since the oxygen-deficient condition reduces the reaction rate and flame temperature. The combustor can achieve ultra-low NOx emission of below 10 ppm (@ 15 vol% O-2) due to low oxygen concentration and flame temperature. Furthermore, part of NOx entrained into the fuel-rich reduction zone by the swirl flow field is reduced by the reductive species (i.e., CO and H-2) to further lowering NOx emissions. The results of this paper can guide the development of the LSVC in the high-efficiency and low-emission combustion fields. (C) 2021 Elsevier Ltd. All rights reserved. |
| WOS关键词 | METHANE/OXYGEN COMBUSTION ; GAS ; SYSTEMS ; BOILER |
| 资助项目 | National Key Research and Development Plan of China[2016YFE0127500] |
| WOS研究方向 | Thermodynamics ; Energy & Fuels |
| 语种 | 英语 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| WOS记录号 | WOS:000703183000001 |
| 资助机构 | National Key Research and Development Plan of China |
| 源URL | [http://ir.giec.ac.cn/handle/344007/34777]  |
| 专题 | 中国科学院广州能源研究所 |
| 通讯作者 | Ren, Shoujun |
| 作者单位 | 1.Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Peoples R China 2.Chinese Acad Sci, Key Lab Renewable Energy, Guangzhou 510640, Peoples R China 3.Nanjing Univ Aeronaut & Astronaut, Coll Energy & Power Engn, Jiangsu Prov Key Lab Aerosp Power Syst, Nanjing 210016, Peoples R China 4.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ren, Shoujun,Yang, Haolin,Wang, Xiaohan. The oxygen-deficient combustion and its effect on the NOx emission in a localized stratified vortex-tube combustor[J]. ENERGY,2021,235:12. |
| APA | Ren, Shoujun,Yang, Haolin,&Wang, Xiaohan.(2021).The oxygen-deficient combustion and its effect on the NOx emission in a localized stratified vortex-tube combustor.ENERGY,235,12. |
| MLA | Ren, Shoujun,et al."The oxygen-deficient combustion and its effect on the NOx emission in a localized stratified vortex-tube combustor".ENERGY 235(2021):12. |
入库方式： OAI收割
来源：广州能源研究所
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