Effect of varying diameter on the performance ofindustrial scale gas cyclone dust separators

Brar, Lakhbir Singh; Sharma, Ritika

doi:10.1016/j.matpr.2015.07.127

Cited by 27 publications

(14 citation statements)

References 6 publications

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“…where d is the particle diameter and λ is the length of the mean free path of air. The 50% cut-off diameter (d 50 ) is normally employed as the key operating indicator in a size-selective device [37], [38]. In this work, the VI is designed to separate PM2; thus, the 50% cut-off diameter is 2 µm.…”

Section: B Theoretical Calculation and Simulation Of The VImentioning

confidence: 99%

Smartphone-Enabled Aerosol Particle Analysis Device

Sun

Zhou

et al. 2019

IEEE Access

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The health effects of suspended particulate matter (PM) in the air are well documented; however, there is a lack of convenient tools to recognize and quantify PM onsite. Here, we design and fabricate a portable PM analysis system to realize onsite aerosol particle analysis. The system contains a micromachined virtual impactor (VI), a thermophoretic deposition chip, and a smartphone-based portable imaging device. The silicon dioxide (SiO 2) particles and polystyrene sphere (PLS) particles are used to verify the micro-sized VI with an accurate cutoff diameter of 2 µm (PM2). After separation, the fine particles are thermally deposited on a replaceable film. Then, a smartphone connected with a hand-held optical microscope is applied to directly image and analyze the deposited particles with the assistance of a selfdeveloped Android application; thus, the size and distribution of the particles can be acquired immediately. The PM analysis device is successfully applied to analyze the particle content from a smoking cigarette as a real complex sample demonstration. Considering the compact integration of the particle separation, collection, detection, and analysis components, the reported PM analysis device is promising for point-ofneed outdoor and indoor air quality monitoring. INDEX TERMS Virtual impactor, particulate matter, smartphone, Android application.

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Section: B Theoretical Calculation and Simulation Of The VImentioning

confidence: 99%

Smartphone-Enabled Aerosol Particle Analysis Device

Sun

Zhou

et al. 2019

IEEE Access

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“…These factors have been the subject of extensive numerical research with experimental validation at different cyclone designs and operating conditions . It has been shown that an increase in the overall cyclone height leads to a decrease in pressure drop and an increase in the collection efficiency since all other geometry is kept constant. , Increasing the cyclone diameter can improve collection efficiency, resulting in increasing pressure drops across the gas cyclones . This is due to the heightened tangential velocity and centrifugal force; thus, the particle motion near the wall region is constrained, resulting in a highly efficient separation of particles .…”

Section: Introductionmentioning

confidence: 99%

“…In order to design and optimize cyclone separators, as indicated above, two commonly used methods are experimental and numerical approaches. While the experimental method can accurately measure the internal pressure drop and separation efficiency through particle collection, it cannot capture detailed information on particle flow behavior. ,,, Indeed, conducting cyclone experiments or estimating different cyclone geometric configurations to estimate the performance outcomes at an industrial, even if laboratory scale, requires resource-intensive in terms of labor, time, measurement tools, and costs . Given these challenges, the numerical simulation is developed to assist in designing several cyclone geometries for performance prediction virtually and analyzing various scenarios without the need for expensive physical prototypes.…”

Section: Introductionmentioning

confidence: 99%

“…25,26 Increasing the cyclone diameter can improve collection efficiency, resulting in increasing pressure drops across the gas cyclones. 27 This is due to the heightened tangential velocity and centrifugal force; thus, the particle motion near the wall region is constrained, resulting in a highly efficient separation of particles. 28 The performance of the cyclone can be enhanced with short and wide cones, which could be achieved by decreasing the cone height and increasing the cone angle.…”

Section: Introductionmentioning

confidence: 99%

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Modeling and Performance Analysis of Different Gas–Bioparticle Cyclone Separators: CFD–DEM Simulations

El-Emam,

Zhou,

Bai

et al. 2023

Ind. Eng. Chem. Res.

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This research presents a comprehensive study aimed at investigating the influence of different cyclone geometries on the flow field and performance in gas−bioparticle flows. Five distinct cyclone designs, including Stairmand high-efficiency (St 1 ), Stairmand high-flow (St 2 ), Swift high-efficiency (Sw 1 ), Swift highflow (Sw 2 ), and typical Lapple (TL), were involved. The investigation utilized a combination of computational fluid dynamics (CFD) and the discrete element method (DEM) to model the gas−particle behavior. The DEM accounted for the motion of individual particles using Newton's equations, while the CFD solved the Navier−Stokes equations to model the gas flow as a continuous medium. This numerical model successfully simulated the cyclone performance under three-dimensional (3D) true shape modeling of large-sized nonspherical bioparticles considering the particle−particle and particle−wall interaction forces. The experimental validation and verification of the model demonstrated an acceptable agreement with the simulated data. The findings revealed that cyclone dimensions significantly impacted both performance and particle behavior even when operating under identical conditions. Cyclones with matching dimensions between the bottom and vortex finder exhibited improved separation efficiency, while an increase in the vortex finder's diameter led to decreased efficiency, as in St 2 and Sw 2 cyclones. A comprehensive force analysis pinpointed regions of intense particle−wall collisions, predominantly at the cone wall apex and the wall opposite the cyclone inlet, particularly evident in St 1 , Sw 1 , and TL cyclones. Notably, particle−particle interaction forces played a crucial role in cyclone performance with increased separation efficiency observed due to particle collisions. The particle−gas forces, including drag and pressure gradient forces, were mainly affected in the inlet region and extended into the cylindrical part. The pressure gradient force exhibited a minimal impact on particle behavior. Among the cyclone designs tested, the Sw 1 cyclone demonstrated outstanding performance, achieving an impressive effectiveness of 94.4% under the given operational conditions. These findings provide a better understanding of the working mechanisms of gas−particle cyclones and similar swirling multiphase flow systems, allowing for improved optimization.

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“…A lot of research has been done on the effect of structural parameters of cyclone separators on equipment performance in recent decades, either numerically or experimentally. Brar and Sharma 6 studied the effect of exhaust pipe diameter on cyclone performance and found that a reduction in the diameter of the exhaust pipe causes an increase in both the pressure drop and the separation efficiency of the cyclone. Hao et al 7 numerically studied the influence of the insertion depth of the exhaust pipe of the cyclone separator on its pressure drop and separation performance and found that increasing the insertion depth can effectively suppress short‐circuit flow but also causes friction loss between the exhaust pipe wall and the upstream flow.…”

Section: Introductionmentioning

confidence: 99%

Optimization of the Structural Parameters of a Cyclone by Using a Genetic Algorithm

Song

Wang

et al. 2022

Chem Eng & Technol

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A mathematical model is proposed to optimize a two‐stage separation cyclone. The model combines the discrete phase model, multi‐objective genetic algorithm, and response surface model. The model was validated by experimental data with an average deviation of 9.87 %. The effects of three structural parameters on the comprehensive performance of this cyclone are discussed. By applying a central composite design method, the cyclone was optimized and three optimal designs were obtained, with an average pressure drop reduction of 6.05 %, and 2.34‐fold improvement in separation efficiency over the original design. The proposed model and results are of great significance for the further design of this type of cyclone.

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Effect of varying diameter on the performance ofindustrial scale gas cyclone dust separators

Cited by 27 publications

References 6 publications

Smartphone-Enabled Aerosol Particle Analysis Device

Smartphone-Enabled Aerosol Particle Analysis Device

Modeling and Performance Analysis of Different Gas–Bioparticle Cyclone Separators: CFD–DEM Simulations

Optimization of the Structural Parameters of a Cyclone by Using a Genetic Algorithm

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