Effects of the geometric configuration on cyclone performance

Hsiao, Ta-Chih; Huang, Sheng-Hsiu; Hsu, Chun‐Hua; Chen, Chih-Chieh; Chang, Pao-Chi

doi:10.1016/j.jaerosci.2015.03.005

Cited by 53 publications

(36 citation statements)

References 32 publications

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“…They found that the effect of changing the inlet width is more significant than the inlet height especially for the cut-off diameter and the optimum ratio of inlet width b to inlet height a is somewhere between 0.5 and 0.7. Gimbun et al (2005) showed that predicted pressure drop coefficients are proportional to the inlet area, which has also been confirmed experimentally by Hsiao et al (2015). Hsiao et al (2015) reported that reducing the inlet area under a constant operation flow rate increased the pressure drop and cut-off diameter while the pressure drop coefficient decreased.…”

Section: Introductionmentioning

confidence: 55%

“…Gimbun et al (2005) showed that predicted pressure drop coefficients are proportional to the inlet area, which has also been confirmed experimentally by Hsiao et al (2015). Hsiao et al (2015) reported that reducing the inlet area under a constant operation flow rate increased the pressure drop and cut-off diameter while the pressure drop coefficient decreased. Their experimental results on examining the effect of the inlet aspect ratio (a/b) did not show a clear trend for the pressure drop coefficient, but the cut-off diameter decreased gradually with increasing a/b.…”

Section: Introductionmentioning

confidence: 55%

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Effects of the inlet angle on the flow pattern and pressure drop of a cyclone with helical-roof inlet

Misiulia

Andersson

Lundström

2015

Chemical Engineering Research and Design

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Section: Introductionmentioning

confidence: 55%

Section: Introductionmentioning

confidence: 55%

Effects of the inlet angle on the flow pattern and pressure drop of a cyclone with helical-roof inlet

Misiulia

Andersson

Lundström

2015

Chemical Engineering Research and Design

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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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“…Cyclones are one of the most popular air pollution control device used in separating particulate matter (hereinafter PM) from flue gas in industries. Generally, it is a preferred choice due to geometric simplicity, safety, low maintenance and operating costs, and wide range of operating conditions [1,2]. In industries, since the volumetric flow of contaminated flue gas is large, a multicyclone is used instead of single cyclone whereby it is made up of a number of small-diameter cyclones which are arranged in parallel and have a common gas inlet and outlet [3,4].…”

Section: Introductionmentioning

confidence: 99%

Performance of a Retrofitted Multicyclone for PM_2.5 Emission Control

Dewika

Rashid²,

Ammar³

2018

E3S Web Conf.

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This paper presents on the performance of a retrofitted multicyclone system, which aims to increase the collection efficiency of PM2.5 (i.e. particulate size fraction ≤ 2.5 μm) emission. The multicyclone was retrofitted by extracting 15% and 20% of the total volumetric air flow rate at the dust hopper of the unit using an additional Induced Draft Fan. The total collection efficiency with and without the extraction was measured at various air volumetric flow rates and particulate mass inlet concentration. The results showed that there was a reduction of 12% to 54% depending on the inlet concentration of PM2.5 emission in the stack with compared to without extraction increasing the collection efficiency of the retrofitted multicyclone. The finding suggests that a simple technique of applying gas extraction at the dust hopper of a multicyclone as reported in this study able to increase the overall performance in fine particulate collection.

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Effects of the geometric configuration on cyclone performance

Cited by 53 publications

References 32 publications

Effects of the inlet angle on the flow pattern and pressure drop of a cyclone with helical-roof inlet

Effects of the inlet angle on the flow pattern and pressure drop of a cyclone with helical-roof inlet

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

Performance of a Retrofitted Multicyclone for PM_2.5 Emission Control

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Effects of the geometric configuration on cyclone performance

Cited by 53 publications

References 32 publications

Effects of the inlet angle on the flow pattern and pressure drop of a cyclone with helical-roof inlet

Effects of the inlet angle on the flow pattern and pressure drop of a cyclone with helical-roof inlet

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

Performance of a Retrofitted Multicyclone for PM2.5 Emission Control

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Performance of a Retrofitted Multicyclone for PM_2.5 Emission Control