Insight into tar thermal cracking and catalytic cracking by char: Characteristics and kinetics
文献类型：期刊论文
| 作者 | Wang, Fang5; Zhang, Yushan5; Zeng, Xi1,5; Yue, Junrong1; Zhang, Guangyi1,5; Hu, Dandan1; Haruna Adamu, Mohammed2; Lai, Xiaoyong3; Xu, Guangwen1,4 |
| 刊名 | Fuel
 |
| 出版日期 | 2022-10-15 |
| 卷号 | 326 |
| 关键词 | Activation energy - Catalysis - Fluidized beds - Gases - Isotherms - Reaction kinetics |
| ISSN号 | 162361 |
| DOI | 10.1016/j.fuel.2022.124929 |
| 英文摘要 | In this research, the non-isothermal and isothermal reaction behavior of tar catalytic conversion by char was tested by a thermogravimetric analyzer (TGA) and a micro fluidized bed reaction analyzer (MFBRA), respectively. The TGA analysis shows that the obvious catalytic action can be found at a temperature above 873 K. In the MFBRA measurement, the roles of heat and catalysis during tar catalytic conversion from char were examined by comparing tar thermal and catalytic cracking. The results show that, regardless of tar thermal and catalytic cracking, the isothermal reaction behavior can be divided into the primary reaction stage (S1) and the secondary reaction stage (S2). In S1, the reaction behaviors in terms of reaction time, tar conversion, and gas yields, were very similar, indicating the dominant role of heat. In S2, the process of tar catalytic conversion needed a longer reaction time with higher tar conversion and more gas product emission, manifesting the significant role of catalytic action. In the examined temperature range of 1023鈥?223 K, the temperature effect on gas components during tar catalytic cracking by char included promotion (CO, CH4, H2, and CO2), suppression (C2H6, C3H6, and C3H8), and competition between them (C2H4). For the reaction kinetics, the activation energy of each gas component generation and the total gas product in S2 was much higher than that in S1. This was much related to the catalytic conversion of hard-to-crack components in the tar sample. The findings were beneficial to understanding tar catalytic reaction by char deeply and providing data support for the design and optimization of the tar removal unit in a gasification process. 漏 2022 Elsevier Ltd |
| 学科主题 | Kinetics |
| 项目编号 | The authors gratefully acknowledge the financial support provided by the National Natural Science Foundation of China (22178005), Foundation of Science and Technology Innovation Project by Beijing Technology and Business University (19008021186), and Foundation of State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering (Grant No. 2021-K37)." |
| 出版者 | Elsevier Ltd |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/61295]  |
| 作者单位 | 1.State Key Laboratory of Multi-Phase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing; 100190, China 2.University of Chinese Academy of Sciences, Beijing; 100049, China 3.State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, Ningxia University, Yinchuan; 750021, China 4.Key Laboratory on Resources of Chemicals and Materials of Ministry of Education, Shenyang University of Chemical Technology, Shenyang; 110142, China 5.School of Ecology and Environment, Beijing Technology and Business University, Beijing; 100048, China |
| 推荐引用方式 GB/T 7714 | Wang, Fang,Zhang, Yushan,Zeng, Xi,et al. Insight into tar thermal cracking and catalytic cracking by char: Characteristics and kinetics[J]. Fuel,2022,326. |
| APA | Wang, Fang.,Zhang, Yushan.,Zeng, Xi.,Yue, Junrong.,Zhang, Guangyi.,...&Xu, Guangwen.(2022).Insight into tar thermal cracking and catalytic cracking by char: Characteristics and kinetics.Fuel,326. |
| MLA | Wang, Fang,et al."Insight into tar thermal cracking and catalytic cracking by char: Characteristics and kinetics".Fuel 326(2022). |
入库方式： OAI收割
来源：过程工程研究所
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