The investigation of the structure and operation of a multi-channel cyclone, separating fine solid particles from an aggressive dispersed gas and vapour flow

Baltrėnas, Pranas; Chlebnikovas, Aleksandras

doi:10.1016/j.powtec.2018.04.043

Cited by 18 publications

(6 citation statements)

References 26 publications

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“…Next, the aerodynamic resistance was analyzed in the multi-channel cyclone under a 50/50 flow distribution ratio between the transitional and peripheral flows using quarter-rings with a 5° opening angle of plates. The summarized tests data show that the aerodynamic resistance in this case was 1150 Pa. A study of the aerodynamic resistance of a four-channel cyclone [37] demonstrated that an aggressive dispersed gas and vapor flow increased the pressure drop by approximately 10%. Based on a numerical simulation study [34], the highest static pressure zones are at the beginning of the first and second channels where pressure values reach around 350 Pa.…”

Section: Resultsmentioning

confidence: 82%

“…This leads to more intensive cohesion (autohesion) of granite PM and settlement into the cyclone hopper as compared to wood ash PM. These phenomena are highly affected by the humidity of gas which can decrease the separation level [37].It is also presumed that the difference in the efficiency of collecting PM of different particle sizes is insignificant. Therefore, it can be concluded that filtration is efficient at a 50/50 distribution ratio between the transitional and peripheral flows, with particular effects on small particles of up to 20 μm in size.…”

Section: Figure 4 Overall Air Treatment Efficiency In the One-level 8-channel Cyclone-separator Mock-up For Different Pm With Particle Simentioning

confidence: 99%

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Experimental investigation of a one-level eight-channel cyclone-separator incorporating quarter-rings

Chlebnikovas

2021

Hem Ind

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The main aim of this investigation was an experimental analysis of the air cleaning efficiency in a mock-up next-generation air cleaning device - one-level 8-channel industrial cyclone-separator with quarter-rings - while changing parameters of the inner structure and the assessment of the effects of dispersion of particulate matter. Therefore, the research was carried out in two stages: the first stage covered the analysis of the efficiency of the multi-channel cyclone with particulate matter of <20 and <50 ?m. During the second stage, a cascade impactor was used to measure the particle collection efficiency in the multi-channel cyclone by fractions: PM1, PM2.5 and PM10. Results of the tests with using the cascade impactor were compared to show changes in the PM composition before and after the multi-channel cyclone-separator. According to the obtained experimental data, the one-level 8-channel cyclone-separator collects 70 to 80 % of PM up to 10 ?m in size, 45 to 60 % of PM up to 2.5 ?m in size and 21 to 25 % of PM up to 1 ?m in size.

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Section: Resultsmentioning

confidence: 82%

Section: Figure 4 Overall Air Treatment Efficiency In the One-level 8-channel Cyclone-separator Mock-up For Different Pm With Particle Simentioning

confidence: 99%

Experimental investigation of a one-level eight-channel cyclone-separator incorporating quarter-rings

Chlebnikovas

2021

Hem Ind

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“…As it flows, the air flow is distributed along the channels with different curvatures and filtered through the gaps between the hemispheres. Under the action of centrifugal forces generated by the vortex flow and in the zone of the resulting filtration effect, solids are deposited on the bottom of the six-channel cyclone, fall into the segmental annular slits (9), and accumulate in the cyclone hopper (10). Purified air passing through all six cyclone channels exits the system through the air outlet (8).…”

Section: Methods Introductionmentioning

confidence: 99%

“…The new generation of cyclones works under the influence of centrifugal forces, as well as the effect of filtration. The contaminated flow curtain filters the flow coming from the subsequent channel in the area of curvature of the curvilinear half-rings, increasing the cleaning efficiency [10]. The mixture of fluids enters the cyclone and rotates, and the dense phase of the mixture under the action of centrifugal forces begins to move relatively in the radial direction and is separated from the main stream [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Modeling of Two-Phase Flow Parameters of a Multi-Channel Cylindrical Cyclone

et al. 2022

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The variation in the two-phase flow parameters in a cylindrical body of new geometry and principle of operation are considered for a device for separating solids from air flow, solving the problem of numerical flow modeling. The aim of this research was to analyze the changes in the parameters of a multi-channel cylindrical cyclone in a mathematical model and to compare it with the results of the examined physical model. Studies on the numerical modeling of cyclones are reviewed, and models and equations for complex vortex flow description are applied. Differential equations were numerically solved by the finite volume method using the standard turbulence models of k‒ε and RNG k‒ε. Numerical modeling of the velocities, pressures, and volumes of both phases of the two-phase flow was performed. The simulation of the volume distribution of the second phase (glass particles) in the cyclone structure at flow rates of 10.9 m/s, 13.9 m/s, and 21.9 m/s was performed. The values obtained were compared with the physical model of the cyclone in question. The mean relative error was ± 6.9%.

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“…Since the first cyclone dust collector was put into production in 1885, it has been more than 100 years of industrial application history [9][10][11][12]. Due to the limited understanding of its dust removal mechanism and process characteristics, the cyclone dust collector has a low initial dust-removal efficiency, and the minimum particle size that can be separated is more than 40-60 μm [13][14][15][16].…”

Section: Introduction mentioning

confidence: 99%

Influence of magnetic field and working voltage on the tripping performance in spherical cylindrical ECP

Zhang

Ren

2021

E3S Web Conf.

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In order to further improve the trapping effect of fine particles, a new electrostatic cyclone precipitator (ECP) with magnetic confinement was proposed, the overall efficiencies of fine particles under different operating conditions were numerically simulated, and the influence of working voltage on the dust-removal effect of fine particles with and without magnetic field were discussed. The results show that increasing working voltage or magnetic induction intensity improves the trapping performance of spherical cylindrical magnetically confinement ECP, and the lifting effect gradually weakens while increasing the same amplitude. The results can offer technical reference for the optimization design of greatly improving the ECP dust-removal performance.

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The investigation of the structure and operation of a multi-channel cyclone, separating fine solid particles from an aggressive dispersed gas and vapour flow

Cited by 18 publications

References 26 publications

Experimental investigation of a one-level eight-channel cyclone-separator incorporating quarter-rings

Experimental investigation of a one-level eight-channel cyclone-separator incorporating quarter-rings

Modeling of Two-Phase Flow Parameters of a Multi-Channel Cylindrical Cyclone

Influence of magnetic field and working voltage on the tripping performance in spherical cylindrical ECP

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