Prediction of the maximum-efficiency cyclone length for a cyclone with a tangential entry

Sürmen, Ali; Avcı, Atakan; Karamangil, M. İhsan

doi:10.1016/j.powtec.2010.10.002

Cited by 39 publications

(17 citation statements)

References 14 publications

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“…The impact of particle agglomeration on the collection efficiency of a cyclone was studied by Paiva et al [8] and a new model for prediction of the collection efficiency was proposed. The maximum-efficiency cyclone length was found by Surmen et al [9]. The authors, using a theoretical approach based on cyclone geometry and fluid properties obtained a relationship describing minimum particle diameter or maximum cyclone efficiency.…”

Section: Introductionmentioning

confidence: 90%

An example of the use of computational-fluid-dynamics analysis for simulation of two-phase flow in a cyclone with a tangential inlet

Wójtowicz

Wolak²

2016

Environ. Protect. Eng.

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The feasibility of using a software package, based on computational fluid dynamics (CFD) codes to simulate two-phase (gas-solid) flows in a cyclone with a tangential inlet was studied. The methodology of numerical simulations and calculations has been presented and the main parameters influencing the effectiveness of the cyclone elaborated. Findings are presented as contour maps of the distribution of selected flow parameters (velocity, pressure) in some parts of the apparatus or as visualizations of vortex formation structures and particle motion trajectories in the cyclone. The results of simulation were compared with those based on literature correlations and experimental results of laboratory tests.

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Section: Introductionmentioning

confidence: 90%

An example of the use of computational-fluid-dynamics analysis for simulation of two-phase flow in a cyclone with a tangential inlet

Wójtowicz

Wolak²

2016

Environ. Protect. Eng.

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“…The Avci and Karagoz (2003) mathematical model for gas cleaning cyclones, with later parameter refinements by Surmen et al (2011), considers the contribution of particle separation within both the inlet/outlet portion and the cone, and has potential application to cyclones with a wide range of geometries. For the GK, SCC and VSCC cyclone families the residual errors between observed and predicted D 50 values ( Figure 6) using this model, particularly at lower flow rates where the frictional coefficient could not be estimated well, were larger than those obtained with the simpler semi-empirical model (Figure 4).…”

Section: Discussionmentioning

confidence: 99%

“…There have been considerable advances recently in the development of mathematical models of gas-cleaning cyclones. A mathematical cyclone model developed by Avci and Karagoz (2003) has been refined over time through comparison with experimental data (Kaya et al 2011;Surmen et al 2011;Karagoz et al 2013;Tan et al 2016). In this article we examine whether this model could also be useful to describe the performance of small, circular-inlet aerosol monitoring cyclones.…”

Section: Introductionmentioning

confidence: 99%

A collection of experimental data for aerosol monitoring cyclones

Kenny

Thorpe

Stacey

2017

Aerosol Science and Technology

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Cyclone behavior is complex and difficult to model. Recent years have seen the development of new and better predictive models for cyclone performance, which are providing new insights into how cyclone performance is affected by cyclone geometry. Experimental data are essential for verification of such models. In this article we present a dataset of more than 250 experimental determinations of cyclone penetration. The dataset includes cyclones with a wide range of sizes and geometries, tested at a wide range of flow rates. We illustrate some empirical, semi-empirical and mathematical approaches to modeling these cyclone data. For our data, we show that mathematical modeling approaches developed for large gas-cleaning cyclones can also be applied to small aerosol monitoring cyclones, to diverse cyclone geometries, and laminar flow operating conditions.

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“…Once pressurized into a hydrocyclone, powders are separated by separation: coarse/dense particles shift to the sidewall due to relatively large centrifugal forces, join the underflow via an outer swirl and leave via an underflow outlet; fine/sparse particles shift to the core due to relatively small centrifugal forces, join the overflow via an inner swirl and leave via an overflow pipe. One-stage grading by conventional hydrocyclones leads to coarse particle underflow and fine particle overflow only [8][9][10][11][12][13]. As shown in Figure 1, the size range is over-wide and fine grading has not been achieved, resulting in poor grading efficiency and accuracy.…”

Section: Introductionmentioning

confidence: 99%

The Study on Numerical Simulation and Experiments of Four Product Hydrocyclone with Double Vortex Finders

et al. 2018

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A hydrocyclone is an instrument that can effectively separate multi-phase mixtures of particles with different densities or sizes based on centrifugal sedimentation principles. However, conventional hydrocyclones lead to two products only, resulting in an over-wide particle size range that does not meet the requirements of subsequent operations. In this article, a two-stage series, a four product hydrocyclone is proposed. The first stage hydrocyclone is designed to be a coaxial double overflow pipe: under the effect of separation, fine particles are discharged from the internal overflow pipe, while medium-size particles are discharged from external overflow pipe before entering the second stage hydrocyclone for fine sedimentation. In other words, one-stage grading leads to four products, including the first stage underflow, the first stage overflow, the second stage underflow, and the second stage overflow. The effects of structural parameters and operational parameters on flow field distribution in hydrocyclone were investigated via a study of flow field distribution in multi-product hydrocyclones using numerical simulations. The application of four product hydrocyclone in iron recovery shows that the grade and recovery of iron concentrate exceed 65.08% and 86.14%, respectively. This study provides references for understanding the flow field distribution in hydrocyclones and development of multi-product grading instrument in terms of both theory and industrial applications.

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Prediction of the maximum-efficiency cyclone length for a cyclone with a tangential entry

Cited by 39 publications

References 14 publications

An example of the use of computational-fluid-dynamics analysis for simulation of two-phase flow in a cyclone with a tangential inlet

An example of the use of computational-fluid-dynamics analysis for simulation of two-phase flow in a cyclone with a tangential inlet

A collection of experimental data for aerosol monitoring cyclones

The Study on Numerical Simulation and Experiments of Four Product Hydrocyclone with Double Vortex Finders

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