Comparative study on the hydrodynamics and mixing characteristics of a new-type particle mixer
文献类型：期刊论文
| 作者 | Meng, Zhenliang1,2; Liu, Mengxi1; Xie, Junming1; Wang, Wei2,3 ; Lu, Chunxi1
|
| 刊名 | POWDER TECHNOLOGY
 |
| 出版日期 | 2018-06-01 |
| 卷号 | 332页码:90-105 |
| 关键词 | Internally circulating fluidized bed Slots EMMS Hydrodynamics Particle mixing |
| ISSN号 | 0032-5910 |
| DOI | 10.1016/j.powtec.2018.03.057 |
| 英文摘要 | The characteristics of particle flow and mixing have a considerable influence on mass and heat transfer, as well as product quality. In order to further enhance the particle mixing in an internally circulating fluidized bed (ICFB), especially along the radial direction, four slots were opened on the draft tube of an ICFB mixer. Hydrodynamic characteristics were investigated by using a multi-scale computational fluid dynamics (CFD) model incorporating the EMMS drag. The prediction in terms of cross-sectionally averaged solid holdup and particle velocity were compared to experimental data for validation. Compared with a traditional ICFB mixer, the new mixer with four slots opening on the draft tube presents strong radial particle flow through the slots, and thereby provides better mixing performance. It is found that nearly 25.4% to 29.7% of gas in the draft tube bypasses and flows through the slots into the annulus. With increase in the superficial gas velocity in the draft tube from 0.3 m/s to 0.45 m/s, the total particle circulation mass flux in the new ICFB mixer increases from 4.87 kg/s to 10.86 kg/s. The mixing index reaches about 0.98 in the new ICFB mixer. (C) 2018 Elsevier B.V. All rights reserved. |
| WOS关键词 | CIRCULATING FLUIDIZED-BED ; DISCRETE ELEMENT METHOD ; MULTISCALE CFD APPROACH ; PERFORATED DRAFT TUBE ; GAS-SOLID FLOW ; BUBBLE-COLUMN ; SIMULATION ; MODEL ; REACTOR ; DISPERSION |
| 资助项目 | National Natural Science Foundation of China[91534111] ; National Natural Science Foundation of China[91334204] ; National Natural Science Foundation of China[21625605] ; National Key Basic Research Project (973) of the People's Republic of China[2012CB215000] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000432640500011 |
| 出版者 | ELSEVIER SCIENCE BV |
| 资助机构 | National Natural Science Foundation of China ; National Key Basic Research Project (973) of the People's Republic of China |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/24829]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Liu, Mengxi; Wang, Wei |
| 作者单位 | 1.China Univ Petr, State Key Lab Heavy Oil Proc, Beijing 102249, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Meng, Zhenliang,Liu, Mengxi,Xie, Junming,et al. Comparative study on the hydrodynamics and mixing characteristics of a new-type particle mixer[J]. POWDER TECHNOLOGY,2018,332:90-105. |
| APA | Meng, Zhenliang,Liu, Mengxi,Xie, Junming,Wang, Wei,&Lu, Chunxi.(2018).Comparative study on the hydrodynamics and mixing characteristics of a new-type particle mixer.POWDER TECHNOLOGY,332,90-105. |
| MLA | Meng, Zhenliang,et al."Comparative study on the hydrodynamics and mixing characteristics of a new-type particle mixer".POWDER TECHNOLOGY 332(2018):90-105. |
入库方式： OAI收割
来源：过程工程研究所
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