Coupling of CFD and semiempirical methods for designing three-phase condensate separator: case study and experimental validation

Ghaffarkhah, Ahmadreza; Dijvejin, Zahra Azimi; Shahrabi, Mohammadjavad Ameri; Moraveji, Mostafa Keshavarz; Mostofi, Masood

doi:10.1007/s13202-018-0460-5

Cited by 10 publications

(5 citation statements)

References 45 publications

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“…[ 15 ] used several types of vessel configurations based on the fluid properties of an Iranian three-phase separator. The computational fluid dynamic (CFD) method for analysing the three-phase separation combined with the volume of fluid–discrete particle method (DPM) and three different turbulence models, i.e., standard k–ε, standard k–ω and RSM, studied with the droplet diameters of 1250, 1550,1850 2150 and 2500 mm.…”

Section: Literature Survey Of Concerning Droplet Sizementioning

confidence: 99%

Experimental investigation of the parameters that affect droplet size and distribution for design calculations of two-phase separators

Pun¹,

Hamad²,

Ahmed³

et al. 2023

Heliyon

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Section: Literature Survey Of Concerning Droplet Sizementioning

confidence: 99%

Experimental investigation of the parameters that affect droplet size and distribution for design calculations of two-phase separators

Pun¹,

Hamad²,

Ahmed³

et al. 2023

Heliyon

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“…𝑚 𝑖 = 0.480 + 1.574 𝜔 𝑖 − 0.176𝜔 𝑖 (4) Al-Mhanna [20] proposed using the acentric factor as a standard to characterize both individual pure components and common properties such as critical pressure, critical temperature, critical volume, and molecular weight. Similar to the coefficient 𝑎 𝑐𝑖 , 𝑏 𝑐𝑖 is a function of critical properties as expressed in Eq.…”

Section: Applied Equation Of Statementioning

confidence: 99%

“…For instance, compressors, dehydration towers, and sweetening towers need liquid-free gas, whereas pumps need gas-free liquid to stay out of cavitation [3]. To properly size a separator to give a high performance after choosing a seam-to-seam length and diameter using semiempirical techniques, it is crucial to use a software to study the performance of the newly sized vessels to verify their dimensions [4] because semiempirical ways could not predict the separation efficiency and they assume 100% of phase separation in their calculations [5][6][7].…”

Section: -Introductionmentioning

confidence: 99%

Selecting Optimum Dimensions for a Three-Phase Horizontal Smart Separator for Khor Mor Gas-Condensate Processing Plant

Sulaiman,

Sidiq

2023

IJCPE

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The Khor Mor gas-condensate processing plant in Iraq is currently facing operational challenges due to foaming issues in the sweetening tower caused by high-soluble hydrocarbon liquids entering the tower. The root cause of the problem could be liquid carry-over as the separation vessels within the plant fail to remove liquid droplets from the gas phase. This study employs Aspen HYSYS v.11 software to investigate the performance of the industrial three-phase horizontal separator, Bravo #2, located upstream of the Khor Mor sweetening tower, under both current and future operational conditions. The simulation results, regarding the size distribution of liquid droplets in the gas product and the efficiency gas/liquid separation, reveal that the separator falls short of eliminating all liquid droplets of specified sizes from the gas phase to meet efficiency requirements, weather with or without a mist extractor. Consequently, an analysis of various structural parameters of the vessel is undertaken to determine their impact on the carried-over liquid mass flow rate and the vessel’s gas/liquid efficiency. The findings recommend a new design concept termed the "smart separator" for Bravo #2, applicable to both current and anticipated operational scenarios. The smart separator demonstrates a remarkable enhancement in gas/liquid separation efficiency, showcasing improvements of 21.31% and 24.02% under existing and future operating conditions, respectively. This innovative design proves effective in controlling liquid carry-over and maintaining high-efficiency levels, even as vessel inlet flow rates increase over time, thus preventing foaming phenomena in downstream processes caused carried-over liquids.

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“…17 The Euler-Lagrangian approach is used in the present study as it is physically more suitable for fluid-particle interaction than the Eulerian-Eulerian model. 18 As the particles occupy a low volume fraction, particle-particle interaction and impact of the discrete phase on the continuous phase are neglected. However, the computational cost increases with the Eulerian-Lagrangian model when the number of particles increases.…”

Section: Governing Equations For the Dispersed Phasementioning

confidence: 99%

“…However, the computational cost increases with the Eulerian-Lagrangian model when the number of particles increases. 18 Furthermore, for flows involving a high volume fraction of solids, the Euler-Lagrangian approach is unsuitable as it neglects the effects of the particle volume fraction on the gas phase, which can lead to incorrect results. 13 The trajectory of discrete phase particles is predicted by integrating the force balance on the particle, which is written in a Lagrangian reference frame as follows 13 :…”

Section: Governing Equations For the Dispersed Phasementioning

confidence: 99%

Effects of convergent–divergent vortex finders on the performance of cyclone separators using computational fluid dynamics simulations

Kumar

Jha

2019

SIMULATION

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This study investigates the effect of convergent–divergent vortex finders on the performance of cyclone separators, which is measured in terms of pressure drop and collection efficiency. Six cyclone models (two with uniform diameter and four with convergent–divergent vortex finders) were numerically simulated. The numerical simulations have been carried out using the commercial computational fluid dynamics code (CFD) Fluent v15. The simulation procedure has been validated using experimental data from the published literature where a good agreement between the numerical results and the experimental data is seen. A grid independence test has been carried out by using two levels of grids for correctness of our simulation. The Reynolds averaged Navier–Stokes (RANS) and continuity equations have been solved for the flow simulation. The Reynolds stress model is used for modeling the stress tensor and closing the RANS equations. The results show that a convergent–divergent vortex finder is capable of producing better performance (pressure drop and collection efficiency) than the uniform diameter cyclones. Only one performance parameter can be improved in uniform diameter cyclones. In comparison to the standard uniform vortex finder cyclones, the convergent–divergent vortex finder improves the pressure drop by 6% and also reduces the cut-size to 1.4 from 1.6 µm. It is further seen that decreasing the throat area or increasing only the lower diameter of the vortex finder causes the performance to degrade. This study proves that convergent–divergent instead of uniform diameter vortex finders can be used in gas cyclones for obtaining a better performance with the same geometry.

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Coupling of CFD and semiempirical methods for designing three-phase condensate separator: case study and experimental validation

Cited by 10 publications

References 45 publications

Experimental investigation of the parameters that affect droplet size and distribution for design calculations of two-phase separators

Experimental investigation of the parameters that affect droplet size and distribution for design calculations of two-phase separators

Selecting Optimum Dimensions for a Three-Phase Horizontal Smart Separator for Khor Mor Gas-Condensate Processing Plant

Effects of convergent–divergent vortex finders on the performance of cyclone separators using computational fluid dynamics simulations

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