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

doi:10.1016/j.cjche.2019.01.002

Chinese Journal of Chemical Engineering ›› 2019, Vol. 27 ›› Issue (11): 2643-2652.DOI: 10.1016/j.cjche.2019.01.002

• Fluid Dynamics and Transport Phenomena • Previous Articles Next Articles

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:2020-01-19 Published:2019-11-28
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).

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

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).

Abstract

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

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

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.

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.

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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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