Laboratory Determination of Coal Dust Cleaning Efficacy of a Fibrous Filter for Flooded-Bed Dust Scrubber

Gupta, Neeraj; Kumar, Ashish; Schafrik, Steven

doi:10.3390/min11030295

Cited by 8 publications

(2 citation statements)

References 20 publications

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“…Igor (Igor et al 1998) found that gravity promotes the formation of water film on the fibers, and the liquid flowed down the fiber under the effect of gravity. Some researchers have also conducted theoretical and experimental studies on the filtration efficiency and filtration resistance of fiber grid (Ali et al 2019, Gupta et al 2021). Chen Xishan (Chen &Zang 2014) obtained the formula of wet filtration resistance by theoretical analysis.…”

Section: Introductionmentioning

confidence: 99%

Experimental study on a novel double Y-shaped filter and its dust removal characteristics

Jiang

Yuan

et al. 2023

Preprint

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For efficient and energy-saving purification of underground coal dust, a double Y-shaped filter device with a pneumatic fan as the power source was presented and tested. Numerical simulation results showed that the dust removal resistance of the double Y-shaped filter was lower than that of the conventional parallel filter. Next, filtration performance was evaluated and the morphology of water film on the filter was analyzed. It was discovered that a moderate filtration velocity was beneficial in increasing dust removal efficiency and the density of the fiber grid was proportional to the dust removal efficiency of the equipment. Conversely, an excess filtration velocity will increase the dust removal resistance and decrease the dust removal performance. According to quality factor evaluation, the optimum performance parameters for this equipment were 60 mesh density fiber grid, 0.6 MPa spray pressure, and 5 m/s filtration velocity. Under these conditions, the dust removal efficiency was 98.2%, and the dust removal resistance was 169.6 Pa. The results obtained in this study showed that this device can provide a new idea for efficient, low resistance and dust removal without electricity in underground coal mines.

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Section: Introductionmentioning

confidence: 99%

Experimental study on a novel double Y-shaped filter and its dust removal characteristics

Jiang

Yuan

et al. 2023

Preprint

View full text Add to dashboard Cite

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“…The scrubber has an inlet that captures the dirty air close to the miner drum. A multi-layered brous type dust lter is the primary cleaning element that traps dust particles on its undulating surface (Gupta, et al, 2021). A water spray is installed upstream of the lter and mounted at 45º to the air ow direction to keep the lter surface drenched and prevent any build-up.…”

Section: Introductionmentioning

confidence: 99%

CFD and Laboratory Studies of Dust Cleaning Efficacy of an Efficient Four Stage Non-Clogging Impingement Filter for Flooded-Bed Dust Scrubbers

Kumar

Gupta

Schafrik

2021

Preprint

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Fibrous-type filters are used to capture dust particles in mining and other occupations where personnel are exposed for prolonged periods. Dust cleansing systems including flooded-bed dust scrubbers use these mesh-type multi-layered filters. These filters trap dust particles efficiently on their surface and inside their mesh. However, their continued operation leads to dust build-up and subsequent clogging. This results in increased resistance of the filter and lowered airflow rate through the scrubber. This could potentially enhance the exposure of the miners. A non-clogging self-cleaning impingement screen type dust filter was designed by the authors for use in mining and industrial dust cleansing applications. The filter guides dirt-laden air through rapidly turning paths which forces it to shed heavier particles. The particles impact one of the impermeable solid metallic filter surfaces and are removed from the airstream. A full cone water spray installed upstream prevents any surface build-up of dust. This paper summaries the computer models generated to show the filter operations and laboratory experiments including optical particle counting to establish the cleaning efficiency.

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CFD modeling and laboratory studies of dust cleaning efficacy of an efficient four stage non-clogging impingement filter for flooded-bed dust scrubbers

Kumar

Gupta

Schafrik

2022

Int J Coal Sci Technol

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Fibrous-type filters are used to capture dust particles in mining and other occupations where personnel are exposed for prolonged periods. Dust cleansing devices including flooded-bed dust scrubbers use these mesh-type multi-layered filters. These filters trap dust particles efficiently on their surface and inside their mesh. However, their continued operation leads to dust build-up and clogging. This results in increased resistance of the filter and lowered airflow rate through the scrubber. This could potentially enhance the exposure of the miners. A non-clogging self-cleaning impingement screen type dust filter was designed by the authors for use in mining and industrial dust cleansing applications. The filter guides dirt-laden air through rapidly turning paths which forces it to shed heavier particles. The particles impact one of the impermeable solid metallic filter surfaces and are removed from the airstream. A full cone water spray installed upstream prevents any surface build-up of dust. This paper summaried the computer models generated to show the filter operations and laboratory experiments including optical particle counting to establish the cleaning efficiency.

show abstract

Laboratory Determination of Coal Dust Cleaning Efficacy of a Fibrous Filter for Flooded-Bed Dust Scrubber

Cited by 8 publications

References 20 publications

Experimental study on a novel double Y-shaped filter and its dust removal characteristics

Experimental study on a novel double Y-shaped filter and its dust removal characteristics

CFD and Laboratory Studies of Dust Cleaning Efficacy of an Efficient Four Stage Non-Clogging Impingement Filter for Flooded-Bed Dust Scrubbers

CFD modeling and laboratory studies of dust cleaning efficacy of an efficient four stage non-clogging impingement filter for flooded-bed dust scrubbers

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