Filtration of dust in an electrostatically enhanced granular bed filter for high temperature gas cleanup

Xi, Jianfei; Gu, Zhou; Cai, Jie; Zhang, J.; Wang, H.C.; Wang, S.F.

doi:10.1016/j.powtec.2020.03.070

Cited by 16 publications

(3 citation statements)

References 19 publications

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“…γ s was the collector polarization coefficient. K E was the dimensionless parameter of the Coulombic force [45,46]. The total collection efficiency h i by a single PA ball was then calculated using…”

Section: Discussionmentioning

confidence: 99%

Enhanced removal of ultrafine particles from kerosene combustion using a dielectric barrier discharge reactor packed with porous alumina balls

Li¹,

Lu²,

Wang³

et al. 2021

Plasma Sci. Technol.

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Ultrafine particles (UFPs) are harmful to human beings, and their effective removal from the environment is an urgent necessity. In this study, a dielectric barrier discharge (DBD) reactor packed with porous alumina (PA) balls driven by a pulse power supply was developed to remove the UFPs (ranging from 20 to 100 nm) from the exhaust gases of kerosene combustion. Five types of DBD reactors were established to evaluate the effect of plasma catalysis on the removal efficiency of UFPs. The influences of gas flow rate, peak voltage and pulse frequency of different reactors on UFPs removal were investigated. It was found that a high total UFP removal of 91.4% can be achieved in the DBD reactor entirely packed with PA balls. The results can be attributed to the enhanced charge effect of the UFPs with PA balls in the discharge space. The UFP removals by diffusion deposition and electrostatic attraction were further calculated, indicating that particle charging is vital to achieve high removal efficiency for UFPs.

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Section: Discussionmentioning

confidence: 99%

Enhanced removal of ultrafine particles from kerosene combustion using a dielectric barrier discharge reactor packed with porous alumina balls

Li¹,

Lu²,

Wang³

et al. 2021

Plasma Sci. Technol.

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“…It was 93.2% in the first minute, 99.1% by the 28th minute, and subsequently maintained a removal efficiency of over 99%. Based on the air filter capture theory, the primary removal mechanism for fine dust can be attributed to the electrostatic attraction between fibers and dust or the adhesive force between dust particles [39,40]. It appears that as the amount of dust trapped in the filter increased, the adhesive force for incoming dust also rose, leading to a gradual increase in the removal rate [41].…”

Section: Hanji Filter For Fine Dust Removalmentioning

confidence: 99%

Development of an Air Filter to Remove Fine Dust from Indoor Air Using a Traditional Korean Paper, ‘Hanji’

Baek,

Kim,

Yoon

et al. 2023

Sustainability

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Fine and ultrafine particulate matter are consequences of air pollution in industrialized nations. The use of natural materials for filters produces fewer side effects for humans and the environment, and due to their structural characteristics, they have the potential to effectively filter out fine particles. In this study, we developed an indoor, fine-dust removal filter using Hanji, a traditional Korean paper made from natural materials derived from mulberry trees. We impregnated activated carbon (AC) into the Hanji filter and conducted air permeability and efficiency experiments to determine the improvement in indoor air quality. The Hanji filter showed a removal efficiency of 80.4% within the first minute and 99.1% efficiency by the 38th minute, maintaining an efficiency of >99% thereafter. The dust removal efficiency of the AC-embedded Hanji filter proved superior. The dust adhesion was ~20 g/m2. An AC-embedded Hanji filter has the potential to remove not only fine dust but also volatile substances. The use of natural filters is both effective and sustainable.

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“…Air pollution is becoming a significant problem in more and more places worldwide, as rapid economic development has drastically increased pollutant emissions [1,2]. Power plants and large industrial plants with high environmental impact are now unthinkable without some technology to keep emissions below limits [3,4]. Although fewer coal-fired power plants are being built as renewables and other clean energy sources become more widespread, emerging issues make it critical to limit the amount of air pollution (e.g., increased urban pollution) [5].…”

Section: Introductionmentioning

confidence: 99%

Comparison of Collection Efficiency of ESP in a Numerical Model Using One and Multiple Independent Power Supplies

Székely,

Kiss

2023

Period. Polytech. Elec. Eng. Comp. Sci.

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This work modeling the collection efficiency of an ESP numerical model based on industrial plant development. Under high dust loads, one power supply controlled the voltages on the two separation zones. The separation efficiency is different depending on the diameter of the dust particles, so the two zones receive dust particles with various distributions, and the electrical characteristics are not the same. In this article, we show the change in the efficiency of separation when the two zones are controlled at different voltages by power supplies.

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Filtration of dust in an electrostatically enhanced granular bed filter for high temperature gas cleanup

Cited by 16 publications

References 19 publications

Enhanced removal of ultrafine particles from kerosene combustion using a dielectric barrier discharge reactor packed with porous alumina balls

Enhanced removal of ultrafine particles from kerosene combustion using a dielectric barrier discharge reactor packed with porous alumina balls

Development of an Air Filter to Remove Fine Dust from Indoor Air Using a Traditional Korean Paper, ‘Hanji’

Comparison of Collection Efficiency of ESP in a Numerical Model Using One and Multiple Independent Power Supplies

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