Experimental study on gas-liquid-liquid macro-mixing in a stirred tank
文献类型：期刊论文
| 作者 | Cheng, Dang; Cheng, Jingcai; Li, Xiangyang; Wang, Xi; Yang, Chao; Mao, Zai-Sha |
| 刊名 | CHEMICAL ENGINEERING SCIENCE
 |
| 出版日期 | 2012-06-18 |
| 卷号 | 75期号:0页码:256-266 |
| 关键词 | Stirred tank Gas-liquid-liquid Mixing Dispersion Turbulence Aeration |
| ISSN号 | 0009-2509 |
| 通讯作者 | Yang, C |
| 英文摘要 | In this paper, experimental data on the mixing time of the continuous phase and power consumption of gas-liquid-liquid dispersions in a mechanically agitated baffled tank are presented. The electrical conductivity method is taken for the measurement of mixing time and the shaft-torque method for power consumption measurement. Tap water is used as the continuous phase, and kerosene and air as the dispersed ones. The effects of probe/tracer injection position, agitation speed, type of impeller, clearance of impeller off tank bottom, oil volume fraction, gas holdup and physical properties of the dispersed liquids on the macro-mixing of the gas-liquid-liquid system have been investigated. The phenomenon of gas-liquid-liquid macro-mixing in a stirred tank is largely similar to that of liquid-liquid and gas-liquid stirred tanks. Our experiments indicate that the gas-liquid-liquid macro-mixing can be enhanced at higher gas holdups while damped at low gas holdups. Contrary to gas effect, the dispersed oil phase at low holdups increases the macro-mixing intensity but at higher holdups decreases the macro-mixing intensity of the continuous phase. The experimental results show that axial impellers are more energy efficient for gas-liquid-liquid macro-mixing than radial impellers. A simple correlation is developed for predicting the mixing time in gas-liquid-liquid three-phase systems and satisfactory agreement with experimental data is observed. (C) 2012 Elsevier Ltd. All rights reserved. |
| WOS标题词 | Science & Technology ; Technology |
| 类目[WOS] | Engineering, Chemical |
| 研究领域[WOS] | Engineering |
| 关键词[WOS] | MINIMUM AGITATION SPEED ; CRITICAL IMPELLER SPEED ; TURBULENT-FLOW REGIME ; MASS-TRANSFER ; NEWTONIAN FLUIDS ; SOLID SUSPENSION ; DISPERSED PHASE ; ORGANIC-PHASE ; VESSELS ; REACTORS |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000303826800026 |
| 公开日期 | 2013-10-18 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/3804]  |
| 专题 | 过程工程研究所_湿法冶金清洁生产技术国家工程实验室 |
| 作者单位 | Chinese Acad Sci, Key Lab Green Proc & Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Inst Proc Engn, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cheng, Dang,Cheng, Jingcai,Li, Xiangyang,et al. Experimental study on gas-liquid-liquid macro-mixing in a stirred tank[J]. CHEMICAL ENGINEERING SCIENCE,2012,75(0):256-266. |
| APA | Cheng, Dang,Cheng, Jingcai,Li, Xiangyang,Wang, Xi,Yang, Chao,&Mao, Zai-Sha.(2012).Experimental study on gas-liquid-liquid macro-mixing in a stirred tank.CHEMICAL ENGINEERING SCIENCE,75(0),256-266. |
| MLA | Cheng, Dang,et al."Experimental study on gas-liquid-liquid macro-mixing in a stirred tank".CHEMICAL ENGINEERING SCIENCE 75.0(2012):256-266. |
入库方式： OAI收割
来源：过程工程研究所
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