Journal of Environmental Science International (한국환경과학회지)

The Korean Environmental Sciences Society (한국환경과학회)
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Prediction of Venturi Effect on Pressure Drop in Pulse Air Jet Bag Filter

충격기류식 여과집진장치에서 벤츄리가 압력손실에 미치는 영향

  • Moon-Sub Jung (Department of Bio Environmental Energy, Pusan National University) ;
  • Jung-Kwon Kim (Department of Environmental Engineering, Dong-Eui University) ;
  • Yong-Hyun Chung (Department of Ecological Engineering. Pukyong National University) ;
  • Jeong-Min Suh (Department of Bio Environmental Energy, Pusan National University)
  • 정문섭 (부산대학교 바이오환경에너지학과) ;
  • 김정권 (동의대학교 환경공학과) ;
  • 정용현 (부경대학교 생태공학과) ;
  • 서정민 (부산대학교 바이오환경에너지학과)
  • Received : 2023.09.08
  • Accepted : 2023.09.25
  • Published : 2023.09.30
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Abstract

The purpose of this study is to predict the pressure drop due to the installation of venturi under diverse operating conditions such as dust concentration, pulse interval and pressure, and filtration velocity using algebraic-linear regression model and use it as an economic data and efficient operating condition for a pulse air jet bag filter. A pilot scale bag filter with a filter a filter size(Ø140 × 850ℓ, 12) was used, and the filters used in the experiment were the polyester filters most commonly used in real industrial sites. The SAS 9.4 program (SAS Institute, USA) was used to predict and to determine the effects of inlet concentration (Ci), pulse interval (Pi) and pressure (Pp), filtration velocity (Vf), presence or absence of venturi, etc. The results are shown below. The variation in pressure drop with or without venturi installation was 38.8 mmAq when venturi is installed and 47.6 mmAq when venturi is not installed, indicating a difference in pressure drop of 8.8 mmAq depending on venturi installation. It is estimated that the efficiency can be improved by about 18.5% if the venturi is installed.

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References

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