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

Ashish Ranjan Kumar, Neeraj Gupta, Steven Schafrik

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

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.

Original languageEnglish
Article number16
JournalInternational Journal of Coal Science and Technology
Volume9
Issue number1
DOIs
StatePublished - Dec 2022

Bibliographical note

Funding Information:
The authors acknowledge the National Institute for Occupational Safety and Health (NIOSH) for funding this research project. The research in contract #75D30119C06228 ‘Maintenance-free filters for continuous miner scrubber’ is aimed at the development of efficient filters for mining dust alleviation.

Publisher Copyright:
© 2022, The Author(s).

Keywords

  • Computational fluid dynamics modeling
  • Dust filter
  • Flooded-bed dust scrubber
  • Iso-kinetic sampling
  • Optical particle counting

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Energy Engineering and Power Technology

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