Isothermal differential characteristics of gas-solid reaction in micro-fluidized bed reactor
文献类型：期刊论文
| 作者 | Yu, Jian; Zeng, Xi; Zhang, Juwei; Zhong, Mei; Zhang, Guangyi; Wang, Yin; Xu, Guangwen |
| 刊名 | FUEL
 |
| 出版日期 | 2013 |
| 卷号 | 103期号:0页码:29-36 |
| 关键词 | Micro-fluidized bed Gas-solid reaction Isothermal differential characteristics Reaction kinetics Graphite combustion |
| 英文摘要 | The isothermal differential characteristics of the gas-solid reaction occurring in a micro-fluidized bed reactor were studied using the indigenously developed Micro-Fluidized Bed Reaction Analyzer (MFBRA). The combustion of graphite powder in micrometers was taken as the model reaction because of its negligible internal diffusion and chemical-reaction simplicity. With minimized inhibitions from both the internal and external diffusions, the reaction in MFBRA at a preset temperature was analyzed by using the isothermal kinetic approach, resulting in an activation energy of 165 kJ/mol and a pre-exponential factor of 10(6) 1/s. The reaction was further found to be subject to the nucleation and growth model expressed by G(alpha) = -ln(1 - alpha). Measuring this reaction in TG via the programmed heating method resulted in the similar activation energy and the same reaction function model (by extrapolating to zero conversion). Comparing with the non-isothermal approach for TG that involves complicated mathematical calculations, the isothermal differential approach for MFBRA allowed the separation of the temperature effect (i.e., the reaction rate constant) and kinetic function model, thus providing a simple and reliable determination of the gas-solid reaction kinetics. Crown Copyright (C) 2011 Published by Elsevier Ltd. All rights reserved. |
| WOS标题词 | Science & Technology ; Technology |
| 类目[WOS] | Energy & Fuels ; Engineering, Chemical |
| 研究领域[WOS] | Energy & Fuels ; Engineering |
| 关键词[WOS] | NATURAL GRAPHITE ; THERMAL-ANALYSIS ; KINETICS ; OXIDATION ; MECHANISMS |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000311932200006 |
| 公开日期 | 2015-05-27 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/13386]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 作者单位 | Chinese Acad Sci, State Key Lab Multiphase Complex Syst, Inst Proc Engn, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yu, Jian,Zeng, Xi,Zhang, Juwei,et al. Isothermal differential characteristics of gas-solid reaction in micro-fluidized bed reactor[J]. FUEL,2013,103(0):29-36. |
| APA | Yu, Jian.,Zeng, Xi.,Zhang, Juwei.,Zhong, Mei.,Zhang, Guangyi.,...&Xu, Guangwen.(2013).Isothermal differential characteristics of gas-solid reaction in micro-fluidized bed reactor.FUEL,103(0),29-36. |
| MLA | Yu, Jian,et al."Isothermal differential characteristics of gas-solid reaction in micro-fluidized bed reactor".FUEL 103.0(2013):29-36. |
入库方式： OAI收割
来源：过程工程研究所
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