OH-PLIF study on the mechanism regulating flame-wall interaction with catalytically active CeO2-ZrO2 coatings
文献类型：期刊论文
| 作者 | Li, Fan1,5; Yang, Haolin1; Deng, Runjie1,2; Guo, Li4; Ye, Yue1,3; Wu, Yuxuan1,3; Xu, Kangwei1,3; Jiang, Liqiao1; Wang, Xiaohan1,5 |
| 刊名 | COMBUSTION AND FLAME
 |
| 出版日期 | 2023-09-01 |
| 卷号 | 255页码:21 |
| 关键词 | CeO2-ZrO2 coating Flame-wall interaction Quenching distance OH-PLIF measurement Surface catalytic effect |
| ISSN号 | 0010-2180 |
| DOI | 10.1016/j.combustflame.2023.112917 |
| 通讯作者 | Li, Fan(lifan@ms.giec.ac.cn) ; Wang, Xiaohan(wangxh@ms.giec.ac.cn) |
| 英文摘要 | Technically, using catalytically active coatings regulate flame-wall interactions to enhance flame stability in small-scale burners, such as the common ZrO2-based ceramics with doping CeO2 which benefit to improve the high-temperature mobility and reactivity of lattice oxygen as an oxygen source to promote gas phase combustion. Probing by OH-PLIF laser diagnosis, the aim of this study was to investigate the dopant content effect (0-20 wt.% CeO2) on the flame characteristics of methane-air mixtures of varying equivalence ratio (0.9, 1.0, and 1.2) in an adjustable-gap narrow channel (2-12 mm) at a wall temperature range of 373 K to 973 K, including the dynamic flame morphology, flame quenching performance, and near-wall spatial distribution of OH radicals. Results show that the flame-wall distances are strongly correlated with wall temperature, equivalence ratio, and channel scale. After doping CeO2, the measured quenching distances can significantly drop, but do not show a linear downward trend with increasing CeO2 content. The case of 5%CeO2-ZrO2 coating demonstrates a small critical quenching Peclet number at high wall temperatures. The maximum OH fluorescence intensity in flame core areas increases with CeO2 doping into CeO2-ZrO2 at 973 K when the channel clearance is less than 4 mm. However, the absolute concentration of near-wall surviving OH radicals in the presence of 20%CeO2-ZrO2 coating is substantially lower than in the 5%CeO2-ZrO2 case due to differences in the redox properties. In situ diffuse reflectance infrared Fourier transformations spectroscopy tests further indicate that the adsorption quantities of C2H4 and C2H6 species on the coating surface also show a non-monotonous CeO2 dependence, as they are important intermediates in the low-temperature C2 chain reaction of methane. (c) 2023 The Combustion Institute. Published by Elsevier Inc. All rights reserved. |
| WOS关键词 | PREMIXED FLAME ; METHANE COMBUSTION ; STABILITY LIMITS ; BURNING VELOCITY ; SURFACE-REACTION ; MICRO-COMBUSTOR ; LOW-PRESSURE ; CO ; LAMINAR ; PROPAGATION |
| 资助项目 | R amp; D Projects in Key Areas of Guangdong Province of China[2020B1111360 0 04] ; Guangdong Basic and Applied Basic Research Foundation[2023A1515012317] ; Guangdong Basic and Applied Basic Research Foundation[2022B1515120047] |
| WOS研究方向 | Thermodynamics ; Energy & Fuels ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001033530500001 |
| 出版者 | ELSEVIER SCIENCE INC |
| 资助机构 | R amp; D Projects in Key Areas of Guangdong Province of China ; Guangdong Basic and Applied Basic Research Foundation |
| 源URL | [http://ir.giec.ac.cn/handle/344007/39282]  |
| 专题 | 中国科学院广州能源研究所 |
| 通讯作者 | Li, Fan; Wang, Xiaohan |
| 作者单位 | 1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China 2.Guangdong Ocean Univ, Sch Mech & Power Engn, Zhanjiang 524088, Peoples R China 3.Univ Sci & Technol China, Sch Energy Sci & Engn, Hefei 230023, Peoples R China 4.Harbin Inst Technol, Sch Energy Sci & Engn, Harbin 150001, Heilongjiang, Peoples R China 5.Chinese Acad Sci, Guangzhou Inst Energy Convers, 2 Nengyuan Rd, Guangzhou 510640, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Fan,Yang, Haolin,Deng, Runjie,et al. OH-PLIF study on the mechanism regulating flame-wall interaction with catalytically active CeO2-ZrO2 coatings[J]. COMBUSTION AND FLAME,2023,255:21. |
| APA | Li, Fan.,Yang, Haolin.,Deng, Runjie.,Guo, Li.,Ye, Yue.,...&Wang, Xiaohan.(2023).OH-PLIF study on the mechanism regulating flame-wall interaction with catalytically active CeO2-ZrO2 coatings.COMBUSTION AND FLAME,255,21. |
| MLA | Li, Fan,et al."OH-PLIF study on the mechanism regulating flame-wall interaction with catalytically active CeO2-ZrO2 coatings".COMBUSTION AND FLAME 255(2023):21. |
入库方式： OAI收割
来源：广州能源研究所
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