CFD Study on the Effect of Hydrocyclone Structure on the Separation Efficiency of Fine Particles

Hwang, Kuo‐Jen; Wu, Wenhao; Su, Qian; Nagase, Yoichi

doi:10.1080/01496390802286637

Cited by 39 publications

(15 citation statements)

References 13 publications

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“…(9). The fractional collection efficiency under different inlet pressures are also listed in Table 3.…”

Section: Statistical Calculation Of Experimental Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Numerical and Experimental Study on a New Separation Device for Gas-Solid Two-Phase Flows

Gao¹,

Gong²,

Wang³

2011

Separation Science and Technology

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A novel separation device is designed to separate solid particles from the high-temperature, high-pressure dusty gas based on oblique shock wave theory. Two-dimensional numerical simulations and a series of experiments of the separation of the supersonic gas-solid two-phase flow are carried out. The aim is to validate the conditions for realizing the gas dedusting and to study the performance of the separation device. It is found that the gas dedusting can be realized only when the physical interface which basically overlaps the geometrical interface are stable and the design flow velocities at the dust-carrying and dust-absorbing nozzles are close to each other. Besides, the experimental results show that 57.83%$67.28% particles with a sauter average diameter of 9.84 lm can be separated by the experimental device. 75.73%$80.15% particles with diameters above 8.31 lm and 96%$100% particles with diameters above 15 lm can also be separated. Larger particles correspond to higher separation efficiency. The same conclusions are also drawn from the numerical simulation results. The study indicates that the present method for the separation of gas-solid two-phase flow is feasible and highly efficient.

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“…(9). The fractional collection efficiency under different inlet pressures are also listed in Table 3.…”

Section: Statistical Calculation Of Experimental Resultsmentioning

confidence: 99%

“…In the computations, the density of the solid particle is 1500 kg=m 3 . The particle shape is assumed to be spherical and a thin suspension is assumed; therefore, the interactions between particles are reasonably neglected (9). Table 1 lists the three cases of gas flows to be computed.…”

Section: Computation Of Solid Particle Movementmentioning

confidence: 99%

Numerical and Experimental Study on a New Separation Device for Gas-Solid Two-Phase Flows

Gao¹,

Gong²,

Wang³

2011

Separation Science and Technology

View full text Add to dashboard Cite

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“…Hydrocyclone is a favorable classifying equipment for its separation of solids [1][2][3]. And it is also a popular device in that it is compact, easy and inexpensive to manufacture, contains no moving parts and requires very little maintenance [4][5][6], etc.…”

Section: Introductionmentioning

confidence: 99%

Experimental and simulation of a novel hydrocyclone-tubular membrane as overflow pipe

Wang

2018

Separation and Purification Technology

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“…If the inertial and centrifugal forces are large enough for particles to enter the downward flow, they will pass through the underflow conduit of the conical section. Otherwise, particles will be transferred into the overflow through the vortex finder …”

Section: Introductionmentioning

confidence: 99%

“…The change in the geometrical structure will affect the flow field and result in a change of separation efficiency and pressure drop . Therefore, a study on the effect of the structural parameters is helpful to deepen the understanding of the separation process and to optimize the design of hydrocyclones …”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical study of a hydrocyclone with the modification of geometrical structure

Liu

Zhang

et al. 2018

Can J Chem Eng

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This paper proposes two kinds of structure-modified hydrocyclone that exhibit better performance than the traditional ones. In type-1, in which the outer edge of the vortex finder is hexagonal, the separation efficiency increases by 18.1 % compared to the conventional hydrocyclone, while type-3, with a hexagonal conical section, can save 49.7 % of energy. To determine the reasons for the improvement in performance, numerical simulations are conducted to observe the flow field inside the hydrocyclones. Tangential, radial, and axial velocities are all studied in this research according to the simulation results. The radial velocity has a close relationship with separation efficiency. Based on the analysis, the separation mechanisms of different types of hydrocyclones are proposed. Furthermore, the air core, which is captured by a CCD camera, as a factor correlative to the flow pattern is also supportive of the improvement. The smoke area, which has many small air bubbles around the vortex finder, is defined in this work. The existence of the smoke area has a negative influence on energy transfer and separation efficiency.

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CFD Study on the Effect of Hydrocyclone Structure on the Separation Efficiency of Fine Particles

Cited by 39 publications

References 13 publications

Numerical and Experimental Study on a New Separation Device for Gas-Solid Two-Phase Flows

Numerical and Experimental Study on a New Separation Device for Gas-Solid Two-Phase Flows

Experimental and simulation of a novel hydrocyclone-tubular membrane as overflow pipe

Experimental and numerical study of a hydrocyclone with the modification of geometrical structure

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