CFD study on the performance of reducing pressure drop holes in cyclone separator

Prasanna, N.; Karthikeyan, S.; Ajay, S.; Rajagopal, Thundil Karuppa Raj; Vigneshwaran, V.

doi:10.1016/j.matpr.2020.11.425

Cited by 16 publications

(8 citation statements)

References 33 publications

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“…However, not all cyclones are created equal, and the design of a cyclone depends on its intended use [81]. Tab.…”

Section: Fundamentals Of Aero-cyclone Separatorsmentioning

confidence: 99%

“…The pressure drop in a cyclone is a crucial factor that affects its performance and energy consumption [81,102]. It is influenced by the cyclone's geometry and operating conditions, such as gas temperature, inlet velocity, and solid loading.…”

Section: Pressure Dropmentioning

confidence: 99%

“…The cyclone pressure drop can be calculated using the difference in static pressure between the inlet and outlet of the cyclone (DP c ¼ P c in À P c out ) [81], as expressed in some studies. Tapered in-out vortex finder…”

Section: Pressure Dropmentioning

confidence: 99%

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Numerical Investigation of Cyclone Separators: Physical Mechanisms and Theoretical Algorithms

El‐Emam,

Zhou,

Yasser

2024

ChemBioEng Reviews

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Gas‐particle aero‐type cyclones have revolutionized biochemical processes, engineering industries, and environmental pollution protection by effectively separating particles from gas. These devices rely on gravitational energy and centrifugal force to dissipate particle phase energy, but achieving optimal energy efficiency while minimizing pressure drop remains challenging. This has led to the development of various cyclone designs in commercial industries, each with unique energy efficiency characteristics. The intricate gas‐particle flow inside cyclones is a critical issue impacted by cyclone geometry, operating conditions, and media parameters. Advanced numerical simulations have been employed to understand this complex flow pattern better, offering researchers valuable insights into the mechanisms of different cyclone separators. This comprehensive review explores the available numerical methods in the literature on cyclones and their corresponding validations. Computational numerical modeling is a promising technique for predicting cyclone energy efficiency, gas‐particle behavior, and overall performance. This investigation delves into the progress and numerical forms of gas‐particle flow cyclones, examining how different parameters impact cyclone performance and flow patterns within the two‐phase flow. The future developments and challenges that may further promote the development of aero‐type cyclone separators, providing theory and engineering support for future cyclone designs, are also covered. As a result, it can confidently be reported that aero‐type cyclone separators remain a critical component in various industrial sectors, offering energy‐efficient solutions for mitigating environmental pollutants and gas‐particle separation systems. With continued development and research, these devices will undoubtedly shape the future of energy processes and engineering industries, ushering in a new era of sustainability and efficiency.

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“…However, not all cyclones are created equal, and the design of a cyclone depends on its intended use [81]. Tab.…”

Section: Fundamentals Of Aero-cyclone Separatorsmentioning

confidence: 99%

Section: Pressure Dropmentioning

confidence: 99%

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Numerical Investigation of Cyclone Separators: Physical Mechanisms and Theoretical Algorithms

El‐Emam,

Zhou,

Yasser

2024

ChemBioEng Reviews

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“…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%

“…27,30,32,33 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. 34 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. designed cyclones with different inlets Using multiple inlets in cyclones can enhance their performance by increasing the tangential velocity and creating a more uniform flow distribution.…”

Section: Introductionmentioning

confidence: 99%

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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Optimizing CO₂ Purification in a Negative CO₂ Emission Power Plant

Amiri,

Mikielewicz,

Ziółkowski

et al. 2024

Chem Eng & Technol

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In the pursuit of mitigating CO2 emissions, this study investigates the optimization of CO2 purification within a negative CO2 emission power plant using a spray ejector condenser (SEC) coupled with a separator. The approach involves direct‐contact condensation of vapor, primarily composed of an inert gas (CO2), facilitated by a subcooled liquid spray. A comprehensive analysis is presented, employing a numerical model to simulate a cyclone separator under various SEC outlet conditions. Methodologically, the simulation, conducted in Fluent, encompasses three‐dimensional, transient, and turbulent characteristics using the Reynolds stress model turbulent model and mixture model to replicate the turbulent two‐phase flow within a gas–liquid separator. Structural considerations are delved into, evaluating the efficacy of single‐ and dual‐inlet separators to enhance CO2 purification efficiency. The study reveals significant insights into the optimization process, highlighting a notable enhancement in separation efficiency within the dual‐inlet cyclone, compared to its single inlet counterpart. Specifically, a 90.7 % separation efficiency is observed in the former, characterized by symmetrical flow patterns devoid of wavering CO2 cores, whereas the latter exhibits less desirable velocity vectors. Furthermore, the investigation explores the influence of key parameters, such as liquid volume fraction (LVF) and water droplet diameter, on separation efficiency. It is ascertained that a 10 % LVF with a water droplet diameter of 10 µm yields the highest separation efficiency at 90.7 %, whereas a 20 % LVF with a water droplet diameter of 1 µm results in a reduced efficiency of 50.79 %. Moreover, the impact of structural modifications, such as the addition of vanes, on separation efficiency and pressure drop is explored. Remarkably, the incorporation of vanes leads to a 9.2 % improvement in separation efficiency and a 16.8 % reduction in pressure drop at a 10 % LVF. The findings underscore the significance of structural considerations and parameter optimization in advancing CO2 capture technologies, with implications for sustainable energy production and environmental conservation.

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CFD study on the performance of reducing pressure drop holes in cyclone separator

Cited by 16 publications

References 33 publications

Numerical Investigation of Cyclone Separators: Physical Mechanisms and Theoretical Algorithms

Numerical Investigation of Cyclone Separators: Physical Mechanisms and Theoretical Algorithms

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

Optimizing CO₂ Purification in a Negative CO₂ Emission Power Plant

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CFD study on the performance of reducing pressure drop holes in cyclone separator

Cited by 16 publications

References 33 publications

Numerical Investigation of Cyclone Separators: Physical Mechanisms and Theoretical Algorithms

Numerical Investigation of Cyclone Separators: Physical Mechanisms and Theoretical Algorithms

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

Optimizing CO2 Purification in a Negative CO2 Emission Power Plant

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Product

Resources

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Optimizing CO₂ Purification in a Negative CO₂ Emission Power Plant