| Pilot-scale study on NO emissions from coarse coal combustion preheated by circulating fluidized bed | |
| Zhu SJ(朱书骏)1,2; Zhu JG(朱建国)1,3; Lyu QG1,3; Liu JZ1; Ouyang ZQ1 | |
| Corresponding Author | Zhu, Shujun([email protected]) |
| Source Publication | FUEL
 |
| 2020-11-15 | |
| Volume | 280Pages:10 |
| ISSN | 0016-2361 |
| Abstract | 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. |
| Keyword | Pilot-scale Coarse coal combustion NO emissions Preheating Circulating fluidized bed |
| DOI | 10.1016/j.fuel.2020.118563 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000562025500003 |
| WOS Keyword | DOWN-FIRED BOILER ; FUEL NITROGEN CONVERSION ; PULVERIZED COAL ; OXYGEN CONCENTRATION ; MILD COMBUSTION ; DYNAMICS ; SYSTEM ; AIR |
| WOS Research Area | Energy & Fuels ; Engineering |
| WOS Subject | Energy & Fuels ; Engineering, Chemical |
| Funding Project | 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 |
| Funding Organization | 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 |
| Classification | 一类 |
| Ranking | 1 |
| Contributor | Zhu, Shujun |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/84984 |
| Collection | 高温气体动力学国家重点实验室 |
| Affiliation | 1.Chinese Acad Sci, Inst Engn Thermophys, Beijing 100190, Peoples R China; 2.Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China; 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| Recommended Citation 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.Rp_Au:Zhu, Shujun |
| 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. |
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| Jp2020284.pdf（4729KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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