Investigation of the interaction of particulate matter and its separation from the gas flow in a multi-channel cyclone with recirculation

Chlebnikovas, Aleksandras; Jasevičius, Raimondas

doi:10.1007/s10035-022-01257-z

Cited by 10 publications

(1 citation statement)

References 73 publications

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“…Many attempts have been conducted to improve the separation performance of cyclone separators by optimizing the structure dimension, such as vortex length [14,15], vortex fnder shape and diameter [16][17][18], inlet type, including single, double inlet and more than two inlets [19][20][21], tangential, and spiral inlet [20], inlet dimension [22], diferent inlet section angles in relation to the cyclone body [23][24][25], symmetrical inlet and a volute scroll outlet [26], cone tip diameter [27,28], cyclone height [29], conical length [18,30,31], diameter and length of vortex fnder [32,33] and hopper length [9]. Tere are also various kinds of cyclone separators developed to improve the separation efciency, such as Lee type [34], semispherical cyclone [35], dynamic cyclone [36], square cyclone [37], CFC cyclone [38], and the new generation of cyclone separators presented as multichannel cyclone separators [39][40][41][42][43]. Te multichannel cyclone separator's structure has some essential external and internal elements, including upgraded curved elements with openings cut with their plates bent outwards to make curvilinear channels for the continuous movement of the peripheral and transitional gas fows from the infow opening to the central axis [39].…”

Section: Introductionmentioning

confidence: 99%

CFD Simulation of an Industrial Dust Cyclone Separator: A Comparison with Empirical Models: The Influence of the Inlet Velocity and the Particle Size on Performance Factors in Situation of High Concentration of Particles

Vermande Paganel,

Fabrice Alban,

Cyrille

et al. 2024

Journal of Engineering

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The present work is dedicated to the study of multiphase turbulent and three-dimensional rotational flow in dust cyclones, a contribution to air pollution control. Cyclones are widely used devices for the separation of constituents from solid-gas mixtures in industry. In order to improve the filtration efficiency of cyclones, and to reduce the pressure drop, parametric numerical simulation studies using the Fluent code have been conducted to characterise the effects of the parameters affecting the operation of these devices through their performance indicators. In this work, the effect of inlet velocity and the particle size on the turbulent flow air in the cyclone is presented. Numerical simulation of the flow by Fluent code using three numerical models: the first based on the dissipation of kinetic energy by viscosity (RNG) K-epsilon and standard K-epsilon as well as the last based on the solution of Reynolds stress equations (RSM), combined with the multiphase mixing model, gave interesting results in terms of the pressure and flow field in the separator, the variation of inlet velocity, and the variation of particle size. Validation with experimental and empirical results showed the advantage of the Reynolds stress turbulence model (RSM) over the standard K-epsilon and RNG K-epsilon. The RSM model better captures physical phenomena in an intense vortex flow in the presence of walls. But it is characterised by a very long calculation time and requires large machine resources. An alternative to this model is RNG K-epsilon model, which offers a reasonable calculation time with acceptable results (maximum deviation of 5 %) for speed values below 10 m/s. In the absence of numerical resources, certain empirical models such as those of First (for the evaluation of pressure drop) and Iozia and Leith (for evaluation of efficiency) may well be useful for the dimensioning of the cyclone.

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Section: Introductionmentioning

confidence: 99%

CFD Simulation of an Industrial Dust Cyclone Separator: A Comparison with Empirical Models: The Influence of the Inlet Velocity and the Particle Size on Performance Factors in Situation of High Concentration of Particles

Vermande Paganel,

Fabrice Alban,

Cyrille

et al. 2024

Journal of Engineering

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An assessment of inorganic components in condensable particulate matter as a function of surface aggregation, spatial suspension state and particle size

Guan,

Liu,

Pan

2024

Journal of Hazardous Materials

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Exploring the collision, acoustic and thermal energy dissipation distribution of discrete mass

Shengwu,

Chiming,

Yuanchao

et al. 2024

Sci Rep

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This research delves into the transfer and loss of energy in a discrete mass when subjected to forced vibration. Using discrete element method (DEM), we analyzed the dynamic behavior of regular spherical granular assemblies and the energy distribution characteristics under different excitation frequencies and reduced accelerations. Moreover, the energy transfer and dissipation process of granular assemblies under different vibration states are studied using an experimental method. The results show that the granular assemblies will produce collision energy dissipation, thermal energy dissipation, acoustic energy dissipation and other forms of energy dissipation in the forced vibration state and the proportion of different energy dissipation under different excitation is given. The collision and friction of granular assemblies are the key to affecting other forms of energy dissipation. When the excitation increases, the energy dissipation forms are generated inside the granular assemblies, and the proportion of collision energy dissipation of the granular assemblies increases. The acoustic energy above 20 kHz occupies the main part of the acoustic energy dissipation. Thermal energy consumption always exists, which takes a long time to play a role. The granular also have other forms of energy loss, which is hard to be measured, including Rayleigh waves generated by granular collision. In this study, the relationship between the forced vibration state of the granular assemblies and the energy loss distribution is established. Various types of energy transfer and conversion distribution which further enriches the energy dissipation of discrete element calculation of the granular assemblies is discussed and provides a reference for the energy loss analysis of the granular assemblies.

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Investigation of the interaction of particulate matter and its separation from the gas flow in a multi-channel cyclone with recirculation

Cited by 10 publications

References 73 publications

CFD Simulation of an Industrial Dust Cyclone Separator: A Comparison with Empirical Models: The Influence of the Inlet Velocity and the Particle Size on Performance Factors in Situation of High Concentration of Particles

CFD Simulation of an Industrial Dust Cyclone Separator: A Comparison with Empirical Models: The Influence of the Inlet Velocity and the Particle Size on Performance Factors in Situation of High Concentration of Particles

An assessment of inorganic components in condensable particulate matter as a function of surface aggregation, spatial suspension state and particle size

Exploring the collision, acoustic and thermal energy dissipation distribution of discrete mass

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