Visual study on the characteristics of liquid and droplet in a novel rotor-stator reactor

doi:10.1016/j.cjche.2019.01.002

中国化学工程学报 ›› 2019, Vol. 27 ›› Issue (11): 2643-2652.DOI: 10.1016/j.cjche.2019.01.002

• Fluid Dynamics and Transport Phenomena • 上一篇下一篇

Visual study on the characteristics of liquid and droplet in a novel rotor-stator reactor

Yubin Wang, Jun Li, Yang Jin, Ming Chen, Yan Cao, Jianhong Luo

Department of Chemical Engineering, Sichuan University, Chengdu 610065, China

收稿日期:2018-11-25 修回日期:2018-12-20 出版日期:2019-11-28 发布日期:2020-01-19
通讯作者: Jun Li, Jianhong Luo
基金资助:
Supported by the National Natural Science Foundation of China (21776180, 21776181, 21306116) and Hou Hua Ku Project of Sichuan University (2018SCUH0012).

Visual study on the characteristics of liquid and droplet in a novel rotor-stator reactor

Yubin Wang, Jun Li, Yang Jin, Ming Chen, Yan Cao, Jianhong Luo

Department of Chemical Engineering, Sichuan University, Chengdu 610065, China

Received:2018-11-25 Revised:2018-12-20 Online:2019-11-28 Published:2020-01-19
Contact: Jun Li, Jianhong Luo
Supported by:
Supported by the National Natural Science Foundation of China (21776180, 21776181, 21306116) and Hou Hua Ku Project of Sichuan University (2018SCUH0012).

摘要/Abstract

摘要： Rotor-stator reactor (RSR), an efficient mass transfer enhancer, has been applied in many fields. However, the hydrodynamic characteristics of liquid flow in RSR are still a mystery despite they are fundamental for the mass transfer performance and processing capacity. In view of the above, this paper studies the liquid-liquid flow and liquid holdup in RSR under various conditions with a high-speed camera. The paper firstly demonstrates two flow patterns and liquid holdup patterns that we obtained from our experiment and then presents in succession a flow pattern and a liquid holdup criterion for the transition of film flow to filament flow and complete filling to incomplete filling. It is found that experimental parameters, including rotor-stator distance, rotational speed and volume flow rate exert great influence on the average droplet diameter and size distribution. Besides, by comparison and contrast, we also find that the experimental values match well with our previous predicted calculations of the average diameter, and the relation between the average diameter and the mean energy dissipation rate.

关键词: Rotor-stator reactor, Liquid-liquid flow pattern, Liquid holdup, Droplet size distribution, Average droplet diameter

Abstract: Rotor-stator reactor (RSR), an efficient mass transfer enhancer, has been applied in many fields. However, the hydrodynamic characteristics of liquid flow in RSR are still a mystery despite they are fundamental for the mass transfer performance and processing capacity. In view of the above, this paper studies the liquid-liquid flow and liquid holdup in RSR under various conditions with a high-speed camera. The paper firstly demonstrates two flow patterns and liquid holdup patterns that we obtained from our experiment and then presents in succession a flow pattern and a liquid holdup criterion for the transition of film flow to filament flow and complete filling to incomplete filling. It is found that experimental parameters, including rotor-stator distance, rotational speed and volume flow rate exert great influence on the average droplet diameter and size distribution. Besides, by comparison and contrast, we also find that the experimental values match well with our previous predicted calculations of the average diameter, and the relation between the average diameter and the mean energy dissipation rate.

Key words: Rotor-stator reactor, Liquid-liquid flow pattern, Liquid holdup, Droplet size distribution, Average droplet diameter

Yubin Wang, Jun Li, Yang Jin, Ming Chen, Yan Cao, Jianhong Luo. Visual study on the characteristics of liquid and droplet in a novel rotor-stator reactor[J]. 中国化学工程学报, 2019, 27(11): 2643-2652.

Yubin Wang, Jun Li, Yang Jin, Ming Chen, Yan Cao, Jianhong Luo. Visual study on the characteristics of liquid and droplet in a novel rotor-stator reactor[J]. Chinese Journal of Chemical Engineering, 2019, 27(11): 2643-2652.

参考文献

[1] M. Meeuwse, J. van der Schaaf, B.F.M. Kuster, J.C. Schouten, Gas-liquid mass transfer in a rotor-stator spinning disc reactor, Chem. Eng. Sci. 65(1) (2010) 466-471.
[2] F. Visscher, J. van der Schaaf, M.H.J.M. de Croon, J.C. Schouten, Liquid-liquid mass transfer in a rotor-stator spinning disc reactor, Chem. Eng. J. 185-186(2012) 267-273.
[3] F. Visscher, A. Bieberle, M. Schubert, J. van der Sheaf, M.H.J.M. de Croon, U. Hampel, J.C. Schouten, Water and n-heptane volume fractions in a rotor-stator spinning disc reactor, Ind. Eng. Chem. Res. 51(51) (2012) 16670-16676.
[4] K.M.P. Van Eeten, H.H.H. Houben, J. van der Schaaf, J.C. Schouten, Experimental and theoretical study on the size of bubbles formed between a rotating disc and a stationary wall, Chem. Eng. Sci. 109(2014) 251-263.
[5] F. Haseidl, J. Pottbäcker, O. Hinrichsen, Gas-liquid mass transfer in a rotor-stator spinning disc reactor:Experimental study and correlation, Chem. Eng. Process. 104(2016) 181-189.
[6] M. Meeuwse, S. Lempers, J. van der Schaaf, J.C. Schouten, Liquid-solid mass transfer and reaction in a rotor-stator spinning disc reactor, Ind. Eng. Chem. Res. 49(21) (2010) 10751-10757.
[7] P. Granados Mendoza, S.J.C. Weusten, M.T. de Groot, J.T.F. Keurentjes, J.C. Schouten, J. van der Schaaf, Liquid-solid mass transfer to a rotating mesh electrode in a rotorstator spinning disc configuration, Int. J. Heat Mass Transf. 104(2017) 650-657.
[8] Y.B. Wang, J. Li, Y. Jin, J.H. Luo, Y. Cao, M. Chen, Liquid-liquid extraction in a novel rotor-stator spinning disc extractor, Sep. Purif. Technol. 207(2018) 158-165.
[9] T.J. Heindel, J.N. Gray, T.C. Jensen, An X-ray system for visualizing fluid flows, Flow Meas. Instrum. 19(2) (2008) 67-78.
[10] F. Visscher, R.T.R. Nijhuis, M.H.J.M. de Croon, J. van der Schaaf, J.C. Schouten, Liquid-liquid flow in an impeller-stator spinning disc reactor, Chem. Eng. Process. 71(2013) 107-114.
[11] J.R. Burn, C. Ramshaw, Process intensification:Visual study of liquid maldistribution in rotating packed, Chem. Eng. Sci. 51(3) (1996) 1347-1352.
[12] M. Meeuwse, E. Hamming, J. van der Schaaf, J.C. Schouten, Effect of rotor-stator distance and rotor radius on the rate of gas-liquid mass transfer in a rotor-stator spinning disc reactor, Chem. Eng. Process. 50(10) (2010) 1095-1107.
[13] K. Guo, Observation of Fluid Flow in Rotating Packed Bed, (Ph. D thesis) Beijing University of Chemical Technology, Beijing, 1996(in Chinese).
[14] Y.W. Li, S.W. Wang, B.C. Sun, M. Arrow, H.K. Zou, J.F. Chen, L. Shao, Visual study of liquid flow in a rotor-stator reactor, Chem. Eng. Sci. 134(2015) 521-530.
[15] L. Sang, Y. Luo, G.W. Chu, J.P. Zhang, Y. Xiang, J.F. Chen, Liquid flow pattern transition, droplet diameter and size distribution in the cavity zone of a rotating packed bed:A visual study, Chem. Eng. Sci. 158(2017) 429-438.
[16] H.Y. Li, J. Chang, PH-compensation effect of bioactive inorganic fillers on the degradation of PLGA, Compos. Sci. Technol. 65(14) (2005) 2226-2232.
[17] S. Pala, D. Malb, R.P. Singh, Cationic starch:An effective flocculating agent, Carbohydr. Polym. 59(4) (2005) 417-423.
[18] Z.H. Nie, M.S. Seo, S.Q. Xu, P.C. Lewis, M. Mok, E. Kumacheva, M.W.G.M. George, P. Garstecki, A.S. Howard, Emulsification in a microfluidic flow-focusing device:Effect of the viscosities of the liquids, Microfluid. Nanofluid. 5(5) (2008) 585-594.
[19] Q.Q. Dai, Y.N. Wang, X.B. Li, Y. Zhang, D.J. Pellegrino, M.X. Zhao, B. Zou, J.T. Seo, Y.D. Wang, W.W. Yu, Size-dependent composition and molar extinction coefficient of PbSe semiconductor nanocrystals, ACS Nano 3(8) (2009) 1518-1524.
[20] Z.M. Gao, S.G. Ma, D.T. Shi, J.N. Wang, Y.Y. Bao, Z.Q. Cai, Droplet characteristics and behaviors in a high-speed disperser, Chem. Eng. Sci. 126(2015) 329-340.
[21] H. Peng, N. Wang, D.X. Wang, X. Ling, Experimental study on the critical characteristics of liquid atomization by a spinning disk, Ind. Eng. Chem. Res. 55(21) (2016) 6175-6185.
[22] B. Bizjan, B. Širok, M. Hočevar, A. Orbanić, Ligament-type liquid disintegration by a spinning wheel, Chem. Eng. Sci. 116(2014) 172-182.
[23] L. Schouveiler, P. Legal, M.P. Chauve, Instabilities of the flow between a rotating and a stationary disk, J. Fluid Mech. 443(2001) 329-350.
[24] M.N. Kashid, A. Renken, L. Kiwi-Minsker, Influence of flow regime on mass transfer in different types of microchannels, Ind. Eng. Chem. Res. 50(11) (2011) 6906-6914.
[25] N. Madhvanand, N. Kashid, A. Renken, L. Kiwi-Minsker, Gas-liquid and liquid-liquid mass transfer in microstructured reactors, Chem. Eng. Sci. 66(17) (2011) 3876-3897.
[26] M. Chen, Y. Jin, J. Li, Y.Q. Zhang, X. Li, Mechanism and kinetic model for autocatalysis in liquid-liquid system:oxidation of dibutyl sulfide with aqueous hydrogen peroxide, Ind. Eng. Chem. Res. 56(27) (2017) 7675-7684.
[27] J.Z. Luo, G.W. Chu, Y. Luo, H.K. Zou, J.G. Li, J.F. Chen, Experimental investigations of liquid-liquid dispersion in a novel helical tube reactor, Chem. Eng. Process. 117(2017) 162-170.

Visual study on the characteristics of liquid and droplet in a novel rotor-stator reactor

Visual study on the characteristics of liquid and droplet in a novel rotor-stator reactor

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