Comprehensive analysis of the characteristics of tobacco stalk in-situ and cooling biochar
文献类型：期刊论文
| 作者 | Qian, Boyi1,2; Song, Qianshi1; Wang, Xiaohan1; Zhang, Wei1; Ye, Yue1; Wang, XiaoWei1 |
| 刊名 | PROCEEDINGS OF THE COMBUSTION INSTITUTE
 |
| 出版日期 | 2024 |
| 卷号 | 40期号:1-4页码:8 |
| 关键词 | In-situ char Gasification Cooling char Physicochemical structure |
| ISSN号 | 1540-7489 |
| DOI | 10.1016/j.proci.2024.105698 |
| 通讯作者 | Song, Qianshi(songqs@ms.giec.ac.cn) ; Wang, Xiaohan(wangxh@ms.giec.ac.cn) |
| 英文摘要 | Currently, most kinetic research on the thermal conversion process of char is focused on cooling char. However, the significant disparity in physicochemical properties between cooling char and in-situ char makes studying char gasification kinetics challenging. In this study, in order to assess the impact of different cooling processes on the char while mitigating the influence of inorganic elements, the preparation of char with four varying cooling rates was carried out using demineralized tobacco stalk. Firstly, the gasification reactivity of the cooling char was determined using thermogravimetric analysis. The results indicated that a higher cooling rate led to char reactivity closer to the in-situ state. Subsequently, the char was characterized in terms of its skeletal structure, chemical functional groups, micromorphology, pore size distribution, and surface active sites. The objective was to analyze the impact of cooling on the physicochemical structure of char, probe into the reasons behind variations in char gasification reactivity, and search for the relationship between various cooling rates, the degree of graphitization, and the active site of char. The findings revealed that the cooling treatment had a significant influence on the skeletal structure and pore structure of the char, resulting in variations in the number of active sites. When the cooling rate increases from 0.04 K/s to 1.35 K/s, 2.39 K/s, 5.78 K/s respectively, the degree of graphitization decreases by 7.48 %, 11.02 %, and 32.68 %, the chemical adsorption capacity (active sites) of CO2 2 increased by 5.15%, 9.28%, and 26.80%. During the cooling process, the temperature gradient generated stress, leading to fragmentation of the char and subsequently affecting the number of pores. However, the cooling treatment had minimal impact on the chemical functional groups and pore size distribution of the char. The main reason for the decrease in reactivity of cooling char is that the pore structure is irreversibly damaged. |
| WOS关键词 | COAL CHAR ; GASIFICATION ; PYROLYSIS |
| 资助项目 | National Natural Sci-ence Foundation of China[52206285] ; Guangdong Basic and Applied Basic Research Foundation[2024A1515011639] ; China Post-doctoral Science Foundation[2022M723161] ; China Post-doctoral Science Foundation[2023T160648] |
| WOS研究方向 | Thermodynamics ; Energy & Fuels ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001298775900001 |
| 出版者 | ELSEVIER SCIENCE INC |
| 资助机构 | National Natural Sci-ence Foundation of China ; Guangdong Basic and Applied Basic Research Foundation ; China Post-doctoral Science Foundation |
| 源URL | [http://ir.giec.ac.cn/handle/344007/42874]  |
| 专题 | 中国科学院广州能源研究所 |
| 通讯作者 | Song, Qianshi; Wang, Xiaohan |
| 作者单位 | 1.Chinese Acad Sci, Guangzhou Inst Energy Convers, CAS Key Lab Renewable Energy, Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Peoples R China 2.Univ Sci & Technol China, Sch Energy Sci & Engn, Hefei 230026, Peoples R China |
| 推荐引用方式 GB/T 7714 | Qian, Boyi,Song, Qianshi,Wang, Xiaohan,et al. Comprehensive analysis of the characteristics of tobacco stalk in-situ and cooling biochar[J]. PROCEEDINGS OF THE COMBUSTION INSTITUTE,2024,40(1-4):8. |
| APA | Qian, Boyi,Song, Qianshi,Wang, Xiaohan,Zhang, Wei,Ye, Yue,&Wang, XiaoWei.(2024).Comprehensive analysis of the characteristics of tobacco stalk in-situ and cooling biochar.PROCEEDINGS OF THE COMBUSTION INSTITUTE,40(1-4),8. |
| MLA | Qian, Boyi,et al."Comprehensive analysis of the characteristics of tobacco stalk in-situ and cooling biochar".PROCEEDINGS OF THE COMBUSTION INSTITUTE 40.1-4(2024):8. |
入库方式： OAI收割
来源：广州能源研究所
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