Simulating separation of a multiphase liquid-liquid system in a horizontal settler by CFD

Misra, Anurag; Souza, Luis Guillherme Medeiros de; Illner, Markus; Hohl, Lena; Kraume, Matthias; Repke, Jens‐Uwe; Thévenin, Dominique

doi:10.1016/j.ces.2017.03.062

Cited by 15 publications

(6 citation statements)

References 35 publications

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“…Detailed reviews on different solution approaches referred to [5,[107][108][109]. In terms of liquid-liquid system, population balance equations were solved for mixer-settler [110,111], rotating disc column [112][113][114][115], Kühni column [116,117], pulsed column [118] and so on.…”

Section: 𝑆 𝑏 = ∫ 𝑚(𝑉 𝑖 )𝛽(𝑉 𝑖 𝑉)ω(𝑉)𝑛(𝑉 𝑡)𝑑(𝑉) − ω(𝑉 𝑖 )𝑛(𝑉 𝑖 𝑡)mentioning

confidence: 99%

“…With this coupled method, detailed information about the flow fields, turbulent energy dissipation and their influences on drop breakage, coalescence and mass transfer could be determined. Attempts have been made in CFD-PBE simulations [111,118,176], models utilized in PBM are either embedded in commercial software or from literature. Considering the differences in test systems, models based on single drop experiment will provide more solid and reasonable predictions for extraction performance.…”

Section: Coupled Cfd-pbm Simulationmentioning

confidence: 99%

See 1 more Smart Citation

A state-of-the-art review on single drop study in liquid–liquid extraction: Experiments and simulations

Zhang

Wang

Stevens

et al. 2019

Chinese Journal of Chemical Engineering

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Section: 𝑆 𝑏 = ∫ 𝑚(𝑉 𝑖 )𝛽(𝑉 𝑖 𝑉)ω(𝑉)𝑛(𝑉 𝑡)𝑑(𝑉) − ω(𝑉 𝑖 )𝑛(𝑉 𝑖 𝑡)mentioning

confidence: 99%

Section: Coupled Cfd-pbm Simulationmentioning

confidence: 99%

A state-of-the-art review on single drop study in liquid–liquid extraction: Experiments and simulations

Zhang

Wang

Stevens

et al. 2019

Chinese Journal of Chemical Engineering

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“…Moreover, the said method is offline and hence not suitable for online monitoring/estimation (and possible control) of the interface band in industrial scale settlers. Recently some CFD studies , were also carried out to numerically capture phase settling in a gravity settler and estimate interface thickness using Euler–Euler two fluid models. The experimental setup used by them to validate their model was once again made of glass/acrylic.…”

Section: Introductionmentioning

confidence: 99%

Ultrasonic Method for Online Tracking of Interface and Dispersion Band in Gravity Settlers

Mukherjee

Sen

Singh

et al. 2020

Ind. Eng. Chem. Res.

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Liquid−liquid solvent extraction process consists of dispersion of one phase into another in the form of fine drops and allowing the solute of interest to migrate from one phase into the other. Subsequently, it is essential to separate the two phases for further processing. In this regard, it is critical to continuously monitor the interface of two liquid phases as entrainment of one phase with another will lead to severe issues in downstream equipment and processes to follow. In this regard, an ultrasonic (UT) based online interface tracking device is developed which can detect the top layer of liquid−liquid interface (30% TBP/DD and water containing trace amounts of uranium) as well as estimate its dispersion thickness. This has been achieved using a single minimally invasive sensor. A novel signal-processing algorithm is developed to denoise and extract meaningful parameters for this estimation from the reflected and highly scattered/attenuated UT signal. The paper reports development of a mathematical model of the algorithm, experimental setup, and validation of the proposed system in a batch gravity settler.

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“…Misra et al 31 simulated the liquid–liquid system in a horizontal settler using the two‐fluid Eulerian CFD model. They modeled drop coalescence using a population balance model and also examined the effect of different coalescence kernels on the drop size distribution.…”

Section: Introductionmentioning

confidence: 99%

Separation of liquid–liquid dispersion in a batch settler: CFD‐PBM simulations incorporating interfacial coalescence

Thaker

Buwa

2020

AIChE Journal

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Several commercially important chemical processes involve liquid-liquid phase separation. In the present work, we have developed a multi-fluid Eulerian CFD model using OpenFOAM that incorporates binary and interfacial coalescence processes. We simulated separation of kerosene dispersed in water in a batch settler and validated the predictions using the measurements of time-evolution of coalescing and settling interfaces, local dispersed-phase volume fraction (α O) and drop size distribution (DSD). Simulations are performed to understand the contributions of binary and interfacial coalescence processes to the phase separation process. While the timeevolution of coalescing and settling fronts can be predicted reasonably well using the two-fluid model with empirically-corrected drag models, local α O and DSD could not be predicted. We have shown that the comprehensive multi-fluid Eulerian model, which incorporates binary and interfacial coalescence, predicts the time-evolution of the coalescing and settling fronts, local α O and the DSD in an excellent agreement with the measurements.

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Simulating separation of a multiphase liquid-liquid system in a horizontal settler by CFD

Cited by 15 publications

References 35 publications

A state-of-the-art review on single drop study in liquid–liquid extraction: Experiments and simulations

A state-of-the-art review on single drop study in liquid–liquid extraction: Experiments and simulations

Ultrasonic Method for Online Tracking of Interface and Dispersion Band in Gravity Settlers

Separation of liquid–liquid dispersion in a batch settler: CFD‐PBM simulations incorporating interfacial coalescence

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