Gas back-mixing characteristics and the effects on gas-solid reaction behavior and activation energy characterization
文献类型：期刊论文
| 作者 | Hu, Dandan2,3,4; Geng, Sulong5; Zeng, Xi1,2; Wang, Fang1,2; Yue, Junrong2; Xu, Guangwen2,3,4 |
| 刊名 | Huagong Xuebao/CIESC Journal
 |
| 出版日期 | 2021-03-01 |
| 卷号 | 72期号:3页码:1354-1363 |
| 关键词 | Flow of gases - Residence time distribution - Activation energy - Fluidized bed combustion - Gases - Mixing - Reaction kinetics - Association reactions - Fluidized beds - Particle size - Fluidization |
| ISSN号 | 4381157 |
| DOI | 10.11949/0438-1157.20200413 |
| 英文摘要 | Using the method of combining cold state research and high temperature reaction, the influence of backmixing on the reaction characteristics and kinetics in the gas-solid reaction process was explored. Firstly, the gas residence time distribution (RTD) was measured by the pulse tracer method to investigate the gas back-mixing characteristics in micro fluidized beds. Parametric influences on the gas back-mixing were analyzed with respect to bed diameter (D), superficial gas velocity (Ug) and medium particle size (dp). The deviation degree of the gas flow in micro fluidized beds from the ideal plug flow of gas was quantitatively compared to obtain the appropriate operating parameters guaranteeing the minimal gas back-maxing or maximal approach to the ideal plug flow. On this basis, the combustion reaction of active coke was tested using the micro fluidized bed reaction analyzer to understand the variation of reaction kinetics with gas back-mixing at different operating conditions. Obvious effects of D, Ug and dp were identified for the estimated activation energy of the combustion reaction. There was suppressed gas back-mixing by decreasing inner diameter of bed and increasing the particle size and superficial gas velocity. These make the gaseous reaction products reach the online detection instrument quickly via a nearly plug flow throughout the reactor so that the obtained activation energy is generally higher at lower gas-back mixing. 漏 2021, Editorial Board of CIESC Journal. All right reserved. |
| 学科主题 | Kinetics |
| 出版者 | Materials China |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/60352]  |
| 作者单位 | 1.School of Ecology and Environment, Beijing Technology and Business University, Beijing; 100190, China 2.State Key Laboratory of Multi-phase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing; 100190, China 3.Key Laboratory on Resources of Chemicals and Materials of Ministry of Education, Shenyang University of Chemical Technology, Shenyang; 110142, China 4.School of Chemical Engineering, University of Science and Technology Liaoning, Anshan; 114051, China 5.Sinpoec Research Institute of Petroleum Processing, Beijing; 100190, China |
| 推荐引用方式 GB/T 7714 | Hu, Dandan,Geng, Sulong,Zeng, Xi,et al. Gas back-mixing characteristics and the effects on gas-solid reaction behavior and activation energy characterization[J]. Huagong Xuebao/CIESC Journal,2021,72(3):1354-1363. |
| APA | Hu, Dandan,Geng, Sulong,Zeng, Xi,Wang, Fang,Yue, Junrong,&Xu, Guangwen.(2021).Gas back-mixing characteristics and the effects on gas-solid reaction behavior and activation energy characterization.Huagong Xuebao/CIESC Journal,72(3),1354-1363. |
| MLA | Hu, Dandan,et al."Gas back-mixing characteristics and the effects on gas-solid reaction behavior and activation energy characterization".Huagong Xuebao/CIESC Journal 72.3(2021):1354-1363. |
入库方式： OAI收割
来源：过程工程研究所
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