Computational Fluid Dynamics Modeling of Dust Capture by a Non-Clogging Screen System for a Flooded-Bed Dust Scrubber

Details

• Personal Author:
  Kumar AR ; Schafrik S ; Velasquez OA ; Wedding WC
• Description:
  Dust generated on underground mechanized coal mining faces is a health and safety hazard. Continuous miners deployed underground usually have an integrated flooded-bed dust scrubber mounted onto the machine that arrests the generated dust from close to the face and cleanses the air around it. However, the impingement screen might get clogged depending on the coal seam being worked. This necessitates the cleaning of the screen which in turn, reduces the overall availability of the scrubber and, hence the continuous miner. A novel non-clogging screen has been developed at the Department of Mining Engineering, University of Kentucky. The proposed impingement screen is built up of three individual aluminum screen units 1.5 mm thick and separated by 3 and 2 mm respectively. The screens have long vertical slits measuring 6 mm. A water spray continuously keeps the screen wet and provides for the filter element to arrest the dust particles. The slits force the dust-laden air to make sharp turns. The dust particles cannot change directions rapidly, impact one of the three screens and are separated out based on their momentum. Preliminary computational fluid dynamics (CFD) models have indicated significant cleaning efficiencies in the respirable range at the expense of much lower pressure drops. Results indicated by CFD models and supported by laboratory experiments have been discussed in this paper. [Description provided by NIOSH]
• Subjects:
  Dust Occupational Health Safety
• Keywords:
  Continuous Mining Dust Control Dust Suppression Respirable Dust Scrubbers
• Publisher:
  Society for Mining, Metallurgy, and Exploration, Inc.
• Document Type:
  Text
• Funding:
  Contract
• Genre:
  Proceedings
• Place as Subject:
  Kentucky ; OSHA Region 4
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  1-4
• NIOSHTIC Number:
  nn:20068866
• Citation:
  2018 SME Annual Meeting, February 25-28, 2018, Minneapolis, Minnesota, preprint 18-077. Englewood, CO: Society for Mining, Metallurgy, and Exploration, Inc., 2018 Feb; :1-4
• Federal Fiscal Year:
  2018
• Performing Organization:
  University of Kentucky
• Peer Reviewed:
  False
• Start Date:
  20140901
• Source Full Name:
  2018 SME Annual Meeting, February 25-28, 2018, Minneapolis, Minnesota, preprint 18-077
• End Date:
  20190831
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:5d27567498fe86d835120b9778f62c9fba36cb044657a092c3d76432252c71d692b21c16bb000b7a243e0c0200b0a109fa03b62b325ac7655ebe6aed665f659d
• Download URL:
  https://stacks.cdc.gov/view/cdc/207433/cdc_207433_DS1.pdf
• File Type:
  [PDF - 449.27 KB ]