Pilot-scale study on NO emissions from coarse coal combustion preheated by circulating fluidized bed
文献类型：期刊论文
| 作者 | Zhu SJ(朱书骏)2,3; Zhu JG(朱建国)1,3; Lyu QG1,3; Liu JZ3; Ouyang ZQ3 |
| 刊名 | FUEL
 |
| 出版日期 | 2020-11-15 |
| 卷号 | 280页码:10 |
| 关键词 | Pilot-scale Coarse coal combustion NO emissions Preheating Circulating fluidized bed |
| ISSN号 | 0016-2361 |
| DOI | 10.1016/j.fuel.2020.118563 |
| 通讯作者 | Zhu, Shujun(zhushujun@iet.cn) |
| 英文摘要 | Achieving stable low-NOx combustion of coarse pulverized coal could improve the energy efficiency of the combustion system. In this study, a pilot-scale experiment on coarse coal (0-1 mm) combustion preheated by circulating fluidized bed is conducted. The coarse coal could achieve a long-term stable preheating, and the assisted combustion by the high-calorific preheated coal gas (3.06 MJ/Nm(3)) and the higher physical sensible heat (754 degrees C) greatly improved the ignition performance and the combustion stability of the preheated fuel. Meanwhile, the release ratio of fuel-nitrogen during the preheating was 36.56%, while the concentrations of NOx in the preheated coal gas were all 0 ppm. During the stable combustion, the volume-based average temperature and the volume-based temperature fluctuation coefficient in the main combustion zone was approximately 1112 degrees C and 8.89%, and the combustion efficiency was approximately 95%. The NOx concentrations in the strong reductive zone were almost 0 ppm. As the reaction atmosphere along the combustion path gradually varied from reducing to oxidizing, fuel-nitrogen was mainly oxidized to NO, and the NO emissions was approximately 68 ppm (114 mg/m(3) @6%O-2). In addition, the effects of burnout air positions in strong reductive zone on NO emissions could be ignored. |
| 分类号 | 一类 |
| WOS关键词 | DOWN-FIRED BOILER ; FUEL NITROGEN CONVERSION ; PULVERIZED COAL ; OXYGEN CONCENTRATION ; MILD COMBUSTION ; DYNAMICS ; SYSTEM ; AIR |
| 资助项目 | National Natural Science Foundation of China[51676187] ; LHD Youth Innovation Fund of State Key Laboratory of High Temperature Gas Dynamics[LHD2019CX08] ; Postdoctoral Funding Project for the Construction of Highly Sophisticated Engineering Disciplines of University of Chinese Academy of Sciences |
| WOS研究方向 | Energy & Fuels ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000562025500003 |
| 资助机构 | National Natural Science Foundation of China ; LHD Youth Innovation Fund of State Key Laboratory of High Temperature Gas Dynamics ; Postdoctoral Funding Project for the Construction of Highly Sophisticated Engineering Disciplines of University of Chinese Academy of Sciences |
| 其他责任者 | Zhu, Shujun |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/84983]  |
| 专题 | 力学研究所_高温气体动力学国家重点实验室 |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China; 3.Chinese Acad Sci, Inst Engn Thermophys, Beijing 100190, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Zhu SJ,Zhu JG,Lyu QG,et al. Pilot-scale study on NO emissions from coarse coal combustion preheated by circulating fluidized bed[J]. FUEL,2020,280:10. |
| APA | 朱书骏,朱建国,Lyu QG,Liu JZ,&Ouyang ZQ.(2020).Pilot-scale study on NO emissions from coarse coal combustion preheated by circulating fluidized bed.FUEL,280,10. |
| MLA | 朱书骏,et al."Pilot-scale study on NO emissions from coarse coal combustion preheated by circulating fluidized bed".FUEL 280(2020):10. |
入库方式： OAI收割
来源：力学研究所
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