A New Modeling Approach of Mixing Quality and Axial Hold-up Distribution in Agitated Liquid-Liquid Flow Mixers for Enabling Process Intensification

3 Pages Posted: 27 May 2020

See all articles by Kifah H. Abid

Kifah H. Abid

University of Bradford

James C. Godfreya

University of Bradford

Michael J Slater

University of Bradford

Muthanna Al-Dahhan

Missouri University of Science and Technology - College of Engineering and Computing

Binbin Qi

Missouri University of Science and Technology

Date Written: May 26, 2020

Abstract

Liquid-liquid mixing, extraction, reaction, separation, and beneficiation have found a wide range of industrial applications. New theoretical based models have been developed and validated to enable process intensification by properly predicting the mixing quality and the local dispersed phase hold-up distributions in the axial direction of a continuous liquid-liquid flow mixer. The models relate the mixing index and axial hold-up distributions to a Peclet Number, the average dispersed phase hold-up, the input flow rates and the physical properties of the dispersion. The developed models offer a new understanding of the nature of the mixing process in continuous mixers with two liquid-liquid immiscible phases in flow. Experimental work was also performed to investigate the mixing index and axial dispersed phase hold-up distribution using Laser Transmission Technique (LTT) in a mixer setup. The experimental results were used in validating the models. The experimental and the predicted data agreed well for a wide range of impeller speeds/flow ratios.

Keywords: Modeling; Hold-up; Mixing Quality; Mixing Index; Agitated Extractor; Pump-Mixers; Liquid-Liquid Dispersion; Axial drop phase Distribution; Two Phase Flow System

Suggested Citation

Abid, Kifah H. and Godfreya, James C. and Slater, Michael J and Al-Dahhan, Muthanna and Qi, Binbin, A New Modeling Approach of Mixing Quality and Axial Hold-up Distribution in Agitated Liquid-Liquid Flow Mixers for Enabling Process Intensification (May 26, 2020). SYMPHOS 2019 – 5th International Symposium on Innovation & Technology in the Phosphate Industry, Available at SSRN: https://ssrn.com/abstract=3610710 or http://dx.doi.org/10.2139/ssrn.3610710

Kifah H. Abid (Contact Author)

University of Bradford ( email )

Bradford West Yorkshire BD7 1DP
West Yorkshire, BD7 1DP
United Kingdom

James C. Godfreya

University of Bradford ( email )

Bradford West Yorkshire BD7 1DP
West Yorkshire, BD7 1DP
United Kingdom

Michael J Slater

University of Bradford ( email )

Bradford West Yorkshire BD7 1DP
West Yorkshire, BD7 1DP
United Kingdom

Muthanna Al-Dahhan

Missouri University of Science and Technology - College of Engineering and Computing ( email )

United States

Binbin Qi

Missouri University of Science and Technology ( email )

1870 Miner Cir
Rolla, MO 65409
United States

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