Transient effects in gas–liquid phase separation at a pair of T-junctions

Baker, G.; Clark, W.W.; Azzopardi, B.J.; Wilson, J. A.

doi:10.1016/j.ces.2007.10.035

Cited by 16 publications

(7 citation statements)

References 19 publications

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“…The ratio between side arm diameters to the main arm diameter is known as the "Diameter Ratio". Some of the researchers worked on regular T-junction [16,24,[34][35][36][37] and reduced junction [22,[38][39][40][41]. It can be noticed from the graphical representation that, decreasing the side arm diameter results in higher separation efficiency.…”

Section: Influence Of Diameter Ratiomentioning

confidence: 99%

Review of Factors Affecting the Phase-Redistribution in the Branching T-Junction

Ejaz

Pao

Nasif

2021

ARFMTS

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Whenever T-junctions are used in chemical processes and petroleum industries for two-phase separation, a maldistribution of phases is observed between outlets of the junction. Currently, the regular T-junctions are utilized in the industry due to which equipment downstream faces high liquid carryovers. Unfortunately, downstream equipment is not capable of handling high liquid carryovers and they trip frequently, consequently. This review manuscript summarizes the effect of different factors that influence phase separation in the T-junction. This article refers to the geometrical parameters, phase superficial velocity flow regimes encounter during the separation process, and different side arm modifications. This article is a contribution to this field as it summarizes and concludes all these factors comprehensively, to give a verdict on ways to improve phase separation. It is also recommended that the effect of side arm modifications or combinations must be explored for further understanding.

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Section: Influence Of Diameter Ratiomentioning

confidence: 99%

Review of Factors Affecting the Phase-Redistribution in the Branching T-Junction

Ejaz

Pao

Nasif

2021

ARFMTS

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“…Time-varying void fraction data collected using ring-type conductance probes were analyzed to capture the significant information regarding the effect of the junction on flow behavior. An experimental investigation was made by Baker et al [8] on the transient effects in gas-liquid phase separation at a pair of T-junctions. Two T-junctions were connected in series with first branch arm as vertically up and second branch arm as vertically down.…”

Section: Introduction and Literature Surveymentioning

confidence: 99%

Identification of the influencing input parameters and their effects on the split dynamics of liquid–liquid two-phase mixture through T-junction: a numerical analysis

Kumar

Ghosh

2020

J Braz. Soc. Mech. Sci. Eng.

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Split dynamics of the liquid-liquid two-phase mixture through horizontal T-junction is numerically investigated by varying the parameters like inlet-volume-fraction, inlet-mixture-velocity, liquid pair, and conduit-diameter. Ultimately, the effects of these parameters on the said dynamics are extracted. 3D steady-state numerical solutions are achieved by adopting a Finite Volume-based Eulerian Multi-Fluid VOF model. To simulate the turbulence, SST k-w model is used. Before producing the results, the adopted numerical methodology is successfully validated with the results available in the literature. Composition of the liquid-liquid two-phase mixture obtained along the branch and run arms differ from that along inlet arm. Again, that composition along the branch and run arm are also different from each other. Inertia imbalance is found as the most vital factor to influence the dynamics of phase split. More split is obtained for the mixture with high density-difference between the component liquids. No significant phase split is found for a liquid pair when any one of them has high viscosity. Depending on the conduit-diameter, liquid pair, and inlet-mixture-velocity, a critical inlet-volume-fraction (> 0.5) is found where no split occurs, and the phenomenon of phase split is reversed at the critical inlet-volume-fraction. As the inlet-velocity increases, critical inlet-volume-fraction increases for T-junction having a smaller conduit-diameter, but it increases very slowly for a larger conduit-diameter. With the increment in inlet-velocity, effective phase split reduces for smaller conduit-diameter, and it slightly increases for a larger conduit-diameter. The intensity of the split decreases with the increment in conduit-diameter. Larger critical inlet-volume-fraction is found for a larger conduit-diameter.

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“…The agreement was good for the horizontal and vertical downward branches; however, no model satisfactorily predicts the pressure drop in the upward branch flow. Baker et al [12] investigated the transient effects in gas-liquid phase separation in a pair of T-junctions. The separation system underwent a rapid global change in the liquid hold-up when the gas inlet superficial velocity changed.…”

Section: Introductionmentioning

confidence: 99%

Oil-Water-Gas Three-Phase Separation in Multitube T-Junction Separators

Yang

Wang

et al. 2019

Water

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Multitube T-junctions can be used as an oil-water-gas pre-separator in the oil and gas industry. In this paper, the mixture model, coupled with the k-ε turbulent model, was applied for a simulation of the oil-water-gas three-phase flow characteristics in the multitube T-junction separator. The oil droplet size ranged from 1 to 4 mm. The water content ranged from 5% to 20% and the gas content from 3% to 25%. According to the phase separation results for different droplet sizes, it was found that, as the oil droplet size increased, the water content at the water outlet initially increased and then tended to be stable. Therefore, it was necessary to increase the oil droplet size through corresponding measures before flowing into the T-junction for separation. For the separator with an inner diameter of 50 mm, the oil content at the inlet had a great influence on the water-oil separation performance, and the water-oil separation performance was obviously improved as the oil content decreased. Owing to increased residence time, the oil content had little influence on the water-oil separation performance when the separator with an inner diameter of 100 mm was applied. Moreover, for the separator with an inner diameter of 100 mm, the oil content had little influence on the degassing effect, and more than 90% of the gas could be discharged from the gas outlet. The separation performance of the multitube T-junction separator became worse as the inlet gas content increased.

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Transient effects in gas–liquid phase separation at a pair of T-junctions

Cited by 16 publications

References 19 publications

Review of Factors Affecting the Phase-Redistribution in the Branching T-Junction

Review of Factors Affecting the Phase-Redistribution in the Branching T-Junction

Identification of the influencing input parameters and their effects on the split dynamics of liquid–liquid two-phase mixture through T-junction: a numerical analysis

Oil-Water-Gas Three-Phase Separation in Multitube T-Junction Separators

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