Multifluid Modeling of Mixing and Segregation of Binary Gas-Solid Flow in a Downer Reactor for Coal Pyrolysis
文献类型：期刊论文
| 作者 | Shu, Zhan1,2; Wang, Junwu1; Fan, Chuigang1; Li, Songgeng1 |
| 刊名 | INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
 |
| 出版日期 | 2014-06-11 |
| 卷号 | 53期号:23页码:9915-9924 |
| 关键词 | CIRCULATING FLUIDIZED-BED PARTICLE HEAT-TRANSFER COUNTERCURRENT DOWNER NUMERICAL-SIMULATION EULERIAN SIMULATION DISCRETE ELEMENT CFD SIMULATION HYDRODYNAMICS BEHAVIOR EMMS |
| ISSN号 | 0888-5885 |
| 其他题名 | Ind. Eng. Chem. Res. |
| 中文摘要 | The mixing and segregation characteristics of different types of solid particles in a downer reactor are of fundamental importance in the pyrolysis of low-rank coals where sand particles are used as the heat carrier. However, relevant fundamental studies are seldom reported. This work presents a computational investigation of the hydrodynamic behavior of binary gas-solid flows in a downer using an Eulerian-Eulerian method with a modified gas-solid drag force model, taking the effect of mesoscale particle clustering structures into consideration. Three-dimensional CFD simulations were carried out and the results obtained were compared with the experimental data available in literature. It was shown that a reasonable agreement with experimental data can be obtained with the proposed drag modification. The segregation/mixing behavior in the downer was then analyzed with two popular methods, which results in the conclusion that the solid particles in the downer reactor can mix reasonably well, therefore offering theoretical support to the idea of coal pyrolysis using sand particles as the heat carrier. |
| 英文摘要 | The mixing and segregation characteristics of different types of solid particles in a downer reactor are of fundamental importance in the pyrolysis of low-rank coals where sand particles are used as the heat carrier. However, relevant fundamental studies are seldom reported. This work presents a computational investigation of the hydrodynamic behavior of binary gas-solid flows in a downer using an Eulerian-Eulerian method with a modified gas-solid drag force model, taking the effect of mesoscale particle clustering structures into consideration. Three-dimensional CFD simulations were carried out and the results obtained were compared with the experimental data available in literature. It was shown that a reasonable agreement with experimental data can be obtained with the proposed drag modification. The segregation/mixing behavior in the downer was then analyzed with two popular methods, which results in the conclusion that the solid particles in the downer reactor can mix reasonably well, therefore offering theoretical support to the idea of coal pyrolysis using sand particles as the heat carrier. |
| WOS标题词 | Science & Technology ; Technology |
| 类目[WOS] | Engineering, Chemical |
| 研究领域[WOS] | Engineering |
| 关键词[WOS] | CIRCULATING FLUIDIZED-BED ; PARTICLE HEAT-TRANSFER ; COUNTERCURRENT DOWNER ; NUMERICAL-SIMULATION ; EULERIAN SIMULATION ; DISCRETE ELEMENT ; CFD SIMULATION ; HYDRODYNAMICS ; BEHAVIOR ; EMMS |
| 收录类别 | SCI |
| 原文出处 | |
| 语种 | 英语 |
| WOS记录号 | WOS:000337337000042 |
| 公开日期 | 2014-08-28 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/10957]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 作者单位 | 1.Chinese Acad Sci, State Key Lab Multiphase Complex Syst, Inst Proc Engn, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100490, Peoples R China |
| 推荐引用方式 GB/T 7714 | Shu, Zhan,Wang, Junwu,Fan, Chuigang,et al. Multifluid Modeling of Mixing and Segregation of Binary Gas-Solid Flow in a Downer Reactor for Coal Pyrolysis[J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,2014,53(23):9915-9924. |
| APA | Shu, Zhan,Wang, Junwu,Fan, Chuigang,&Li, Songgeng.(2014).Multifluid Modeling of Mixing and Segregation of Binary Gas-Solid Flow in a Downer Reactor for Coal Pyrolysis.INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,53(23),9915-9924. |
| MLA | Shu, Zhan,et al."Multifluid Modeling of Mixing and Segregation of Binary Gas-Solid Flow in a Downer Reactor for Coal Pyrolysis".INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 53.23(2014):9915-9924. |
入库方式： OAI收割
来源：过程工程研究所
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