Utilisation of wet fibrous media for filtration of sticky aerosol particles

Agranovski, Igor E.; Whitcombe, Joshua Matthew

doi:10.1016/s0021-8502(00)90211-8

Cited by 6 publications

(2 citation statements)

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“…From the viewpoint of mine air flow purification, the Peabody Coal Mine first adopted wet-layer dust removal technology in the 1970s [1] . In the same period, the wet dust collector and wet-layer dust remover were developed by the Maanshan Institute of Mining Research in China; the main functional section is made of wire or nylon mesh [2] . Northeast University developed a new type of wet fiber grille dust removal technology in 1998; for a velocity of dusty airflow of 4 m/s, tests revealed (1) an overall purification efficiency of dust of 99.5%, (2) an arithmetically averaged purification efficiency of 96% for respiratory dust, and (3) working resistance of 450 Pa [3] .…”

Section: Introductionmentioning

confidence: 99%

Application of a Wet Resonance Grille in a Ventilating Shaft and a Model for Calculating the Efficiency of Dust Removal

Wang¹,

Chen²,

Chen³

2019

Proceedings of the 5th World Congress on Mechanical, Chemical, and Material Engineering

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The dust-removal processes of a spray, wet resonance grille, and water film are considered in an investigation of factors that affect the efficiency of wet resonance-grille dust-removal technology. The dust removal efficiency of the liquid droplet group is deduced adopting limit trajectory theory. A formula for calculating the efficiency of dust removal by a single resonance grille and water film is obtained employing resonance grille filtering and liquid saturation theory. On the basis of Strauss tandem theory, a mathematical model of the total dust removal efficiency is proposed and numerically calculated. Numerical results show that the grille distance-diameter ratio ranges from 2.0 to 2.5 when the liquid-gas ratio is 0.0263l/m 3 under the condition of low filtration velocity. As the distance-diameter ratio decreases, the filling ratio increases, the grille diameter decreases, and the overall dust removal efficiency increases. The method of calculating the efficiency proposed in this paper can guide engineering practice.

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Section: Introductionmentioning

confidence: 99%

Application of a Wet Resonance Grille in a Ventilating Shaft and a Model for Calculating the Efficiency of Dust Removal

Wang¹,

Chen²,

Chen³

2019

Proceedings of the 5th World Congress on Mechanical, Chemical, and Material Engineering

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show abstract

“…For the wettable filters, liquid droplets supplied to the filter either naturally from the contaminated air stream or artificially through the irrigating nozzle, spread along fibres and generate thin films covering each of them. In this case, new coming particles are captured not by the solid fibres but by the liquid film and can be simply removed by continuous irrigation of the filter (Agranovski and Whitcombe [4]). The efficiency of filtration can be controlled by an inclination of the filter at a certain angle (Agranovski et al [5]) or by combining wettable and nonwettable filters (Agranovski et al [6]).…”

Section: Introductionmentioning

confidence: 99%