Journal of Environmental Science International (한국환경과학회지)

The Korean Environmental Sciences Society (한국환경과학회)
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A Study on Prediction of On-line Type Pulse Air Jet Bag Filter Effective Pulsing Distance

연속탈진형 충격기류식 여과집진장치의 여과포 유효탈진거리 예측

  • Jeong-Sam Son (Department of Bio-Environmental Energy, Pusan National University) ;
  • Jeong-Min Suh (Department of Bio-Environmental Energy, Pusan National University) ;
  • Jeong-Ho Park (Department of Environmental Engineering, Gyeongsang National University)
  • 손정삼 (부산대학교 바이오환경에너지학과) ;
  • 서정민 (부산대학교 바이오환경에너지학과) ;
  • 박정호 (경상국립대학교 환경공학과)
  • Received : 2023.07.27
  • Accepted : 2023.08.23
  • Published : 2023.08.31
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Abstract

A study is to predict the effective pulsing distance following to the pulsing pressure, nozzle diameter, filtration velocity using numercial analysis techniques and use it as an efficient operation condition and economic data for on-line type pulse air jet bag filter. Filtration area 6 m2 condition, calculate filter resistance coefficient for simulation through the primary experiments using coke dust. For CFD simulation, analysis pulsing characteristics about nozzle diameter, filtration velocity and pulsing pressure. The maximum pulsing length of on-line type pulse air jet bag filter, in 10mm nozzle, filtration velocity 1.5m/min and pulsing pressure 5 bar conditions, is 2,285 mm, maximum length is 76.2% of the total filter bag, which is sufficient to pulsing. In 12mm nozzle, pulsing pressure 5 bar and filtration area 1.22 m2 conditions, the maximum pulsing length of on-line type pulse air jet bag filter is 1,744~2,952 mm, and the maximum length is 2,952 mm indicates pulsing air can be reached to the bottom of filter bag. When the nozzle diameter is increased 8mm to 10mm, maximum pulsing length is extended 40~47%, and increased 10mm to 12 mm, maximum pulsing length is extended 10~17%. For effective pulsing, over the 5bar of pulsing pressure and larger than 10 mm of nozzle diameter are required.

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