Automation of a Procedure for the Experimental Investigation of Liquid‐Liquid Phase Separation

Sibirtsev, Stephan; Göbel, Clara Berinike; Jupke, Andreas

doi:10.1002/cite.201900162

Cited by 5 publications

(2 citation statements)

References 13 publications

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“…A temperature increase of Δ T = 20 K has a positive impact on phase separation time, which is in accordance with literature , . With further increase in temperature to T 3 = 334.50 ± 0.34 K, settling time increases by 33.1 % compared to T 2 .…”

Section: Resultssupporting

confidence: 91%

Influence of Reaction Conditions on the Settling Behavior of Liquid‐Liquid Dispersions

Kaiser

Kabatnik

Jupke

2020

Chemie Ingenieur Technik

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The settling behavior of liquid‐liquid dispersions at ambient temperature and pressure is well investigated. However, little is known about the settling behavior of those systems at high pressure and high temperature. In this work, a novel stainless steel settling cell is presented, enabling investigations on liquid‐liquid settling behavior at high pressures up to 130 bar. The settling behavior of a promising CO2 hydrogenation reaction system is investigated by sequentially determining influences of dissolved CO2, side components, and temperature.

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Section: Resultssupporting

confidence: 91%

Influence of Reaction Conditions on the Settling Behavior of Liquid‐Liquid Dispersions

Kaiser

Kabatnik

Jupke

2020

Chemie Ingenieur Technik

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“…Reactive systems rarely meet these premises. Advances in temperature dependent phase separation behavior are currently made by Sibirtsev et al [93]. Also, reactive systems are often characterized by turbulent hydrodynamics in the continuous phase as opposed to comparatively low Reynolds numbers present in extraction systems.…”

Section: Conclusion and Future Challengesmentioning

confidence: 99%

Design of Extractive Reaction Systems

Rathgeb

Palmtag

Kamiński

et al. 2019

Chemie Ingenieur Technik

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Product selectivity and yield in chemical reactions can be limited by side product formation or low conversions due to equilibrium limitations. Extractive reaction systems (ERS) employ an in situ liquid‐liquid extraction that separates the product from the reaction phase to overcome these difficulties. The design of ERS requires a broad knowledge of the discipline of process intensification and extraction and reaction engineering. Furthermore, specific knowledge about the interplay of reaction and extraction phenomena is unique to ERS. This review gives an overview of the design of ERS and enables their application to any suitable reaction.

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Experimental and model‐based investigation of the droplet size distribution during the mixing process in a batch‐settling cell

Sibirtsev,

Thiel,

Zhai

et al. 2024

Can J Chem Eng

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The design of a liquid–liquid gravity settler relies on the experimental investigation and model‐based description of the phase separation process in a batch‐settling cell. However, according to the current state of the art, the modelling assumes a monodisperse droplet size distribution (DSD), which can lead to an inaccurate settler design. This study considers the polydispersity of the initial DSD resulting from the mixing process in the settling cell to enhance the model accuracy. DSDs of o/w and w/o dispersions during the mixing process in a settling cell are investigated in this work for 2‐methyltetrahydrofuran/water and decane/water material systems at hold‐ups of 25–50 vol.% and stirrer speeds of 400–850 min−1. Sauter mean diameters (SMD) and DSD shapes are analyzed to identify the influence of the investigated parameters on the SMD and DSD and to model the SMD and DSD. The experimental investigation shows that stirrer speed, hold‐up, and interfacial tension significantly affect the DSD, while the viscosity of the continuous phase plays a minor role. The SMD is correlated to the Weber number, viscosity group, and hold‐up by a model with a mean absolute percentage error (MAPE) of 3.6%. The DSD is described by a log‐normal distribution function with a MAPE of 5%. The SMD and DSD models presented in this work can be used to describe the initial DSD of the phase separation process in a batch‐settling cell, considering polydispersity and thus increasing the modelling accuracy of the phase separation process.

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Automation of a Procedure for the Experimental Investigation of Liquid‐Liquid Phase Separation

Cited by 5 publications

References 13 publications

Influence of Reaction Conditions on the Settling Behavior of Liquid‐Liquid Dispersions

Influence of Reaction Conditions on the Settling Behavior of Liquid‐Liquid Dispersions

Design of Extractive Reaction Systems

Experimental and model‐based investigation of the droplet size distribution during the mixing process in a batch‐settling cell

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