Study on mixing and settling characteristics in mixer-settler

WU Yuxin; TANG Qiao; ZHANG Jiyizhe; WANG Yundong

doi:10.11949/0438-1157.20190533

您当前的位置：

首页 >

文章列表页 >

Study on mixing and settling characteristics in mixer-settler

Fluid dynamics and transport phenomena | 更新时间：2026-07-24

- Study on mixing and settling characteristics in mixer-settler
- CIESC Journal Vol. 70, Issue 10, Pages: 3932-3940(2019)
- 作者机构：
  
  清华大学化学工程系，化学工程联合国家重点实验室，北京 100084
- 作者简介：
- 基金信息：
- DOI：10.11949/0438-1157.20190533
  CLC： TQ 028.8
- Received：21 May 2019，
  
  Revised：2019-08-30，
  
  Online First：24 July 2026，
  
  Published：05 October 2019
- 稿件说明：
移动端阅览
吴雨馨, 唐巧, 张姬一哲, 王运东. 混合澄清槽混合与澄清特性的规律研究[J]. 化工学报, 2019, 70(10): 3932-3940

WU Yuxin, TANG Qiao, ZHANG Jiyizhe, WANG Yundong. Study on mixing and settling characteristics in mixer-settler[J]. CIESC Journal, 2019, 70(10): 3932-3940
吴雨馨, 唐巧, 张姬一哲, 王运东. 混合澄清槽混合与澄清特性的规律研究[J]. 化工学报, 2019, 70(10): 3932-3940 DOI： 10.11949/0438-1157.20190533.

WU Yuxin, TANG Qiao, ZHANG Jiyizhe, WANG Yundong. Study on mixing and settling characteristics in mixer-settler[J]. CIESC Journal, 2019, 70(10): 3932-3940 DOI： 10.11949/0438-1157.20190533.

摘要

混合澄清槽是最早也是目前依然被广泛使用的萃取设备，针对混合澄清槽存在的局限性对其混合与澄清特性进行规律性研究。研究过程采用SOPAT液滴测量平台测量液滴尺寸，针对不同体系混合室、澄清室液滴尺寸分布、平均液滴粒径、持液量、分散带尺寸、夹带量之间的关系探讨达到研究目的。实验结果表明，在混合过程中，大部分体系的等比表面积平均直径

与转速呈指数关系，与持液量的关系符合Calderbank模型。而在澄清过程中，澄清效果主要受到液滴尺寸、密度差、黏度、质量传递、温度、界面张力的影响，其中界面张力的增加会增强分相效果。通过对液滴测量影响因素进行系统的研究，为具体的操作下优化或改进混合澄清槽的结构打下基础。

Abstract

Mix-settler is the earliest extraction equipment which is still widely used at present. This paper studies on mixing and settling characteristics in a mixer-settler according to the limitation. The research process uses the SOPAT droplet measurement platform to measure the droplet size. The relationship between the droplet size distribution

the average droplet size

the liquid holding capacity

the size of the dispersion belt and the entrainment amount of different system mixing chambers

clarification chambers is discussed. The results show that Sauter diameter of droplet

is linear with the agitation speed.

and liquid holdup were satisfied with the Calderbank model in the mixing chamber. And in the settling chamber

the settling performance was mainly affected by droplet size

organic/aqueous phase density difference

viscosity

mass transfer

temperature and interfacial tension. The drop studi

es will lay the foundation for optimizing or improving the structure of the mixer-settler.

关键词

Keywords

references

赵星 . 稀土产业发展现状及趋势分析 [J ] . 科技广场 , 2013 , ( 4 ): 131 - 133 .

Zhao X . Analysis of the status and trend of rare earth industrial development [J ] . Science Mosaic , 2013 , ( 4 ): 131 - 133 .

唐定芳 , 贡宝彬 . 混合澄清槽的改进 [J ] . 有色冶炼 , 1986 , ( 7 ): 43 - 47 .

Tang D F , Gong B B . Improvement of mixed clarification tank [J ] . China Nonferrous Metallurgy , 1986 , ( 7 ): 43 - 47 .

李洲 , 罗洪盛 . 混合澄清槽澄清性能的改进研究(Ⅱ): 挡板的助澄清性能 [J ] . 稀有金属 , 1986 , ( 6 ): 6 - 8 .

Li Z , Luo H S . Study on improvement of clarification performance of mixed clarifier(Ⅱ): Baffle assisted clarification performance [J ] . Chinese Journal of Rare Metals , 1986 , ( 6 ): 6 - 8 .

李洲 , 杨志华 , 谭世语 , 等 . 混合澄清槽澄清性能的改进研究(Ⅰ): 填料的助澄清性能 [J ] . 稀有金属 , 1986 , ( 5 ): 36 - 43 .

Li Z , Yang Z H , Tan S Y , et al . Study on improvement of clarification performance of mixed clarifier(Ⅰ): Clarification aid of packing [J ] . Chinese Journal of Rare Metals , 1986 , ( 5 ): 36 - 43 .

Lu L , Zhao B , Lin P , et al . Rare earth elements separation in double mixing chamber mixer-settler systems [J ] . Separations Technology , 1992 , 2 ( 3 ): 136 - 140 .

Hadjiev D , Paulo J . Extraction separation in mixer–settlers based on phase inversion [J ] . Separation and Purification Technology , 2005 , 43 ( 3 ): 257 - 262 .

Paulo J B A , Hadjiev D E . Mixer-settler based on phase inversion: design of the mixing zone [J ] . Industrial and Engineering Chemistry Research , 2006 , 45 ( 11 ): 3821 - 3829 .

徐建鸿 , 骆广生 , 孙永 , 等 . 膜分散式混合澄清萃取器性能研究 [J ] . 高校化学工程学报 , 2003 , 17 ( 4 ): 361 - 364 .

Xu J H , Luo G S , Sun Y , et al . Extraction performance of a new mixer-settler with membrane dispersion technique [J ] . Journal of Chemical Engineering of Chinese Universities , 2003 , 17 ( 4 ): 361 - 364 .

付子忠 , 孙秋法 , 刘尚勇 , 等 . 全逆流混合澄清器的研制与应用 [J ] . 湿法冶金 , 2008 , 27 ( 2 ): 124 - 128 .

Fu Z Z , Sun Q F , Liu S Y , et al . Development and application of full countercurrent mixing clarifier [J ] . Hydrometallurgy of China , 2008 , 27 ( 2 ): 124 - 128 .

王春花 , 黄桂文 . 双混浅层澄清室的混合澄清器研究 [J ] . 稀土 , 2007 , 28 ( 2 ): 60 - 64 .

Wang C H , Huang G W . Study on mixing clarifier in double mixing shallow chamber [J ] . Chinese Rare Earths , 2007 , 28 ( 2 ): 60 - 64 .

Zaheri P , Abolghasemi H , Zaheri M . Comparison of the effects of anionic and cationic surfactant concentration on mean drop size in a mixer-settler extractor [J ] . Chemical Engineering Research and Design , 2013 , 91 ( 3 ): 396 - 402 .

Miller G . Design of mixer-settlers to maxmise performance [J ] . Alta Copper-10 , 2006 , 26 ( 1 ): 1 - 26 .

Javanshir S , Izadi H , Tavakoli M M R , et al . A modified correlation for drop size distribution in an experimental mixer-settler using particle swarm optimization algorithm [J ] . Separation Science and Technology , 2014 , 49 ( 4 ): 553 - 561 .

Asadollahzadeh M , Torab-Mostaedi M , Torkaman R , et al . A new model for prediction of drop size distribution in a liquid–liquid extraction column [J ] . RSC Advances , 2016 , 6 ( 86 ): 82496 - 82504 .

Padilla R , Ruiz M C , Trujillo W . Separation of liquid-liquid dispersions in a deep-layer gravity settler(Ⅰ): Experimental study of the separation process [J ] . Hydrometallurgy , 1996 , 42 ( 2 ): 267 - 279 .

吕宇玲 , 何利民 , 丁慎圆 , 等 . 原油-水分散流中液滴粒径及压降规律研究 [J ] . 工程热物理学报 , 2013 , 34 ( 3 ): 472 - 475 .

Lyu Y L , He L M , Ding S Y , et al . Investigation of droplet size and pressure drop in crude oil-water dispersed flows [J ] . Journal of Engineer Thermophysics , 2013 , 34 ( 3 ): 472 - 475 .

许宏庆 , 贺新生 , 涂海意 , 等 . 测量两相流的LDV系统 [J ] . 实验技术与管理 , 1988 , ( 1 ): 65 - 66 .

Xu H Q , He X S , Tu H Y , et al . Measure two-phase flow LDV system [J ] . Experimental Technology and Management , 1988 , ( 1 ): 65 - 66 .

马婷婷 . 混合澄清槽内流动的测量与模拟 [D ] . 天津 : 天津大学 , 2014 .

Ma T T . On measurement and simulation of flow in Mixer-settlers [D ] . Tianjin : Tianjin University , 2014 .

Zou Y , Ye S S , Wang Y D , et al . CFD simulation and PIV measurement of liquid–liquid two-phase flow in pump-mix mixer [J ] . Journal of the Taiwan Institute of Chemical Engineers , 2016 , 60 : 15 - 25 .

Calderbank P H . Physical rate processes in industrial fermentation(Ⅰ): The interfacial area in gas-liquid contacting with mechanical agitation [J ] . Transactions of the Institution of Chemical Engineers . 1958 ( 36 ): 443 - 463 .

Chakraborty M , Bhattacharya C , Datta S . Effect of drop size distribution on mass transfer analysis of the extraction of nickel(Ⅱ) by emulsion liquid membrane [J ] . Colloids and Surfaces A: Physicochemical and Engineering Aspects , 2003 , 224 ( 1 ): 65 - 74 .

Raji-Asadabadi M , Abolghasemi H , Maragheh M G , et al . On the mean drop size of toluene/water dispersion in the presence of silica nanoparticles [J ] . Chemical Engineering Research and Design , 2013 , 91 ( 9 ): 1739 - 1747 .

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Extraction of praseodymium(Ⅲ) and neodymium(Ⅲ) in saponified P507-HCl-kerosene system

Solvent extraction of erbium(Ⅲ) with P507 in nitric acid solution and its separation from calcium(Ⅱ) and ferrum(Ⅲ)

Research on process control of preparation of mesophase pitch by fluid catalytic cracking slurry oil

Simulation of liquid-liquid two-phase flow in a pilot-plant scale annular pulsed disc and doughnut extraction column

Application of aluminum-copper bimetallic ionic liquids in 1-hexene/n-hexane separation

Related Author

LIU Jing

WANG Yundong

NIU Qinglin

WANG Yundong

TIAN Lingyan

SUN Jinfa

LIU Dong

WANG Hua

Related Institution

State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University

Heavy Oil National Key Laboratory of China University of Petroleum(East China)

Research Institute of PetroChina Karamay Petrochemical Company Limited，PetroChina

State Key Laboratory of Heavy Oil Processing, China University of Petroleum

Institute of Nuclear and New Energy Technology, Tsinghua University

⁰