Numerical simulation of the wavy collecting plate effects on the performance of an electrostatic precipitator

Choi, Ho Yeon; Park, Yong Gap; Ha, Man Yeong

doi:10.1016/j.powtec.2020.12.070

Cited by 31 publications

(9 citation statements)

References 31 publications

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“…[ 24 ] The results in the present study were in good agreement with those of earlier reports. [ 23,24 ] It could be seen that the effect of gas velocity on coagulation efficiency mainly depended on the residence time of particles in the coagulation zone. Slow gas velocity resulted in low particle velocity.…”

Section: Resultssupporting

confidence: 93%

“…The research results showed that better results were obtained when the gas velocity was 5 to 6 m s -1 . [24] The results in the present study were in good agreement with those of earlier reports. [23,24] It could be seen that the effect of gas velocity on coagulation efficiency mainly depended on the residence time of particles in the coagulation zone.…”

Section: Influence Of Gas Velocitysupporting

confidence: 94%

“…The positive and negative particles were coagulated and gradually change from small particles to large particles. [ 24 ]…”

Section: Resultsmentioning

confidence: 99%

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Feasibility of improving dust removal efficiency of fly ash fine particles for coal‐fired power plants

Li,

Yao,

et al. 2023

CLEAN Soil Air Water

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As solid waste of coal‐fired power plants, atmospheric environmental pollution is caused by fly ash during transportation. The purpose of this study was to improve the dust removal efficiency of fly ash fine particles by electrocoagulation and obtain reasonable operating parameters. The effects of particle concentration, gas velocity, AC frequency, and voltage on particle electrocoagulation efficiency were studied through the establishment of a discrete element soft sphere calculation model, and reasonable electrocoagulation operation parameters were obtained. The dust removal process was evaluated according to the particle number concentration, electrocoagulation efficiency, and particles microscopic characteristics due to the dust removal experiments of fly ash by electrocoagulation. The results demonstrated that increasing particle concentration, reducing gas velocity, and selecting reasonable AC frequency and voltage were effective to improve the real‐time electrocoagulation efficiency and its stability. Under the suitable conditions: voltage of 3 kV, airflow velocity of 5 m s–1, particle concentration of 30 mg m–3 and AC frequency of 100 Hz, the electrocoagulation efficiency was higher than 40%. The electrocoagulation was effective to improve the dust removal efficiency of fly ash fine particles with a relative humidity of air below 70% and ambient temperatures above 20°C.

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Section: Resultssupporting

confidence: 93%

Section: Influence Of Gas Velocitysupporting

confidence: 94%

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Feasibility of improving dust removal efficiency of fly ash fine particles for coal‐fired power plants

Li,

Yao,

et al. 2023

CLEAN Soil Air Water

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“…1 Even it harms the central nervous systems. 2 From the comprehensive consideration of economy and collection performance, fiber filtration is currently the most common technology for removing particles from flue gas compared with electrostatic, 3 cyclone, 4 and wet dust removal. 5 The fiber filtration efficiency can be improved by changing the fiber cross-sectional shape, 6 fiber diameter, 7 fiber orientation distribution, 8 and fiber arrangement 2,9 ; loading nanofibers on the surface of the fiber layer 10,11 or changing the structure of filter media.…”

Section: Introductionmentioning

confidence: 99%

The influence of interaction between orthogonal magnetic fibers on the capture of Fe-based fine particles by each fiber

Diao

Chu

et al. 2022

Journal of Engineered Fibers and Fabrics

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In this work, an existing method of capturing Fe-based fine particles by magnetic fiber is improved, and a weaving method for the fiber filter material is further determined. Different combinations of magnetic fields could form around the magnetic fibers, which change the interaction between orthogonal magnetic fibers when a uniform magnetic field is applied along the X-, Y-, and Z-axes. Therefore, the process of particle capture by the orthogonal magnetic fibers under three configurations was compared using the computational fluid dynamics-discrete phase model (CFD-DPM) and a special user-defined function (UDF) of the magnetic force. The results show that the interaction between orthogonal magnetic fibers could either inhibit or promote the capture of Fe-based fine particles by adjacent magnetic fibers. In industrial production, the magnetic filter material is suitable for the weaving method for the alternate use of magnetic and traditional fibers. When a uniform magnetic field is applied along the X-axis, this weaving method makes the capturing performance of orthogonal magnetic fiber best. Moreover, the magnetic characteristics, flow characteristics, and combination sequence of magnetic fields should be considered. This study provides scientific researchers with new insights for the development of novel high-efficiency fibrous filters to reduce particulate pollutants emissions.

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“…Electrostatic and sleeve filters are the most commonly applied devices in world practice due to high efficiency in removing particulate matter (PM) from the air. However, they are expensive and rather difficult to maintain [1][2][3][4]. Centrifugal filter is a kind of industrial equipment used for gas (air)-PM separation in thermal power plants, fluidized bed combustion processes, control of air pollution as well as for sorting/sieving materials [5].…”

Section: Introductionmentioning

confidence: 99%

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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Numerical simulation of the wavy collecting plate effects on the performance of an electrostatic precipitator

Cited by 31 publications

References 31 publications

Feasibility of improving dust removal efficiency of fly ash fine particles for coal‐fired power plants

Feasibility of improving dust removal efficiency of fly ash fine particles for coal‐fired power plants

The influence of interaction between orthogonal magnetic fibers on the capture of Fe-based fine particles by each fiber

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

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