Double-Eccentric Design for the Vortex Finder of a Cyclone Separator

Yao, Yuge; Huang, Zhong; Zhou, Tuo; Li, Jinjing; Cheng, Liang; Zhang, Man; Yang, Hairui; Lyu, Junfu

doi:10.1021/acs.iecr.2c02054

Cited by 10 publications

(3 citation statements)

References 52 publications

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“…These pulsations lead to changes in the motion and trajectory of the discrete phase oil droplets. The discrete random walk (DRW) and random eddy lifetime (REL) were used to consider the turbulent dispersion of droplets [28,29].…”

Section: Mathematical Modelsmentioning

confidence: 99%

“…The performance of an oil-gas separator is primarily evaluated through the separation efficiency, which represents its separation capability, and the pressure drop, which reflects its energy consumption. The objective of structural improvement is to enhance the separation efficiency and reduce the pressure drop, with a balance between these two performance metrics often being a key consideration [29]. The pressure drop in the simulation is obtained by calculating the difference between the average pressures at the inlet and outlet of the separator.…”

Section: Separation Performancementioning

confidence: 99%

See 1 more Smart Citation

Impact of Built‐in Helical Fins on the Performance of Oil‐Gas Cyclone Separators

Fu,

Wu,

Liang

et al. 2023

Chem Eng & Technol

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An improved design was proposed by incorporating helical fins onto the vortex finder, and the impact on the comprehensive performance of the oil‐gas cyclone separator was analyzed based on flow field characteristics. The results revealed that the integration of helical fins led to a slight enhancement in the overall separation efficiency and a significant reduction in pressure drop, thus contributing to the decrease of energy consumption in industrial processes. The orthogonal experimental design (OED) method was utilized for the discussion and optimization of five structural parameters related to the helical fins. This study provides new insights for the design of internal components of oil‐gas separators.

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Section: Mathematical Modelsmentioning

confidence: 99%

Section: Separation Performancementioning

confidence: 99%

Impact of Built‐in Helical Fins on the Performance of Oil‐Gas Cyclone Separators

Fu,

Wu,

Liang

et al. 2023

Chem Eng & Technol

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“…Dense downward particle flow is a common particle flow state and is widely applied in various particle transport equipment or chemical reactors (circulating fluidized bed, silos, moving bed heat exchanger, chemical looping combustion reactor, etc.). In a downward particle flow channel, it is common to arrange internals to adjust the flow state or to serve as heat exchange tubes .…”

Section: Introductionmentioning

confidence: 99%

Semiempirical Model of the Drag Force Acting on an Obstacle in Downward Dense Particle Flows as per the Flow-Around Behavior

Liu

Yang

Zhang

et al. 2023

Ind. Eng. Chem. Res.

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Determination of the flow-around drag force acting on an internal when particles downwardly flow around the internal is important for the safety of internals in the downward particle flow channel. In this study, the flow behaviors of particles downwardly flowing around different obstacles were investigated and a semiempirical drag force model was proposed based on the characteristics of the flow patterns. The proposed model was validated and key coefficients were correlated using the experimental data. The results indicate that there were three featured flow zones when particles downwardly flowed around an obstacle: the flow stagnant zone (disappear for triangular/conical obstacle), the slip-shear flow zone, and the flow separation zone. The stagnant zone angle and the flow separation angle were proposed to depict transition points of three flow zones when particles flowed around a cylindrical/spherical obstacle, and the two angles were found independent of the flow condition. A drag force model as per the flow patterns was proposed. The model decomposed the drag force into the compression force, the shear force, and the confinement force. The expressions of the compression stress, the shear stress, the effective area, and the confinement force were given. The mathematical form of the proposed model was validated and key coefficients in this model were also correlated using the experimental data. The average error of the drag force model was ±7.6% while the maximum error was within ±15%.

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Multi-objective Bayesian shape optimization of an industrial hydrodynamic separator using unsteady Eulerian-Lagrangian simulations

Roberts,

Rahat,

Jarman

et al. 2024

Optim Eng

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The shape of a hydrodynamic particle separator has been optimized using a parallelized and robust formulation of Bayesian optimization, with data from an unsteady Eulerian flow field coupled with Lagrangian particle tracking. The uncertainty due to the mesh, initial conditions, and stochastic dispersion in the Eulerian-Lagrangian simulations was minimized and quantified. This was then translated across to the error term in the Gaussian process model and the minimum probability of improvement infill criterion. An existing parallelization strategy was modified for the infill criterion and customized to prefer exploitation in the decision space. In addition, a new strategy was developed for hidden constraints using Voronoi penalization. In the approximate Pareto Front, an absolute improvement over the base design of $$14\%$$ 14 % in the underflow collection efficiency and $$10\%$$ 10 % in the total collection efficiency was achieved, which resulted in the filing of a patent.* The corresponding designs were attributed to the effective distribution of residence time between the trays via the removal of a vertical plume. The plume also reduced both efficiencies by creating a flow path in a direction that acted against effective settling. The concave down and offset tray shapes demonstrated the value of Bayesian optimization in producing useful and non-intuitive designs. Graphic abstract

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Double-Eccentric Design for the Vortex Finder of a Cyclone Separator

Cited by 10 publications

References 52 publications

Impact of Built‐in Helical Fins on the Performance of Oil‐Gas Cyclone Separators

Impact of Built‐in Helical Fins on the Performance of Oil‐Gas Cyclone Separators

Semiempirical Model of the Drag Force Acting on an Obstacle in Downward Dense Particle Flows as per the Flow-Around Behavior

Multi-objective Bayesian shape optimization of an industrial hydrodynamic separator using unsteady Eulerian-Lagrangian simulations

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