Journal of Environmental Science International (한국환경과학회지)

The Korean Environmental Sciences Society (한국환경과학회)
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Pressure Drop Predictions Using Multiple Regression Model in Pulse Jet Type Bag Filter Without Venturi

다중회귀모형을 이용한 벤츄리가 없는 충격기류식 여과집진장치 압력손실 예측

  • Suh, Jeong-Min (Department of Bioenvironmental Energy, Pusan National University) ;
  • Park, Jeong-Ho (Department of Environmental Engineering, Gyeongnam National University of Science and Technology) ;
  • Cho, Jae-Hwan (Department of Agricultural Economics, Pusan National University) ;
  • Jin, Kyung-Ho (Life and Industry Convergence Research Institute, Pusan National University) ;
  • Jung, Moon-Sub (Department of Biosystems Engineering, Pusan National University) ;
  • Yi, Pyong-In (Department of Bioenvironmental Energy, Pusan National University) ;
  • Hong, Sung-Chul (Department of Bioenvironmental Energy, Pusan National University) ;
  • Sivakumar, S. (Department of Bioenvironmental Energy, Pusan National University) ;
  • Choi, Kum-Chan (Department of Environmental Engineering, Dong-A University)
  • 서정민 (부산대학교 바이오환경에너지학과) ;
  • 박정호 (경남과학기술대학교 환경공학과) ;
  • 조재환 (부산대학교 농업경제학과) ;
  • 진경호 (부산대학교 생명산업융합연구원) ;
  • 정문섭 (부산대학교 바이오시스템공학과) ;
  • 이병인 (부산대학교 바이오환경에너지학과) ;
  • 홍성철 (부산대학교 바이오환경에너지학과) ;
  • 시바쿠마르 (부산대학교 바이오환경에너지학과) ;
  • 최금찬 (동아대학교 환경공학과)
  • Received : 2013.09.26
  • Accepted : 2014.12.15
  • Published : 2014.12.31
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Abstract

In this study, pressure drop was measured in the pulse jet bag filter without venturi on which 16 numbers of filter bags (Ø$140{\times}850{\ell}$) are installed according to operation condition(filtration velocity, inlet dust concentration, pulse pressure, and pulse interval) using coke dust from steel mill. The obtained 180 pressure drop test data were used to predict pressure drop with multiple regression model so that pressure drop data can be used for effective operation condition and as basic data for economical design. The prediction results showed that when filtration velocity was increased by 1%, pressure drop was increased by 2.2% which indicated that filtration velocity among operation condition was attributed on the pressure drop the most. Pressure was dropped by 1.53% when pulse pressure was increased by 1% which also confirmed that pulse pressure was the major factor affecting on the pressure drop next to filtration velocity. Meanwhile, pressure drops were found increased by 0.3% and 0.37%, respectively when inlet dust concentration and pulse interval were increased by 1% implying that the effects of inlet dust concentration and pulse interval were less as compared with those changes of filtration velocity and pulse pressure. Therefore, the larger effect on the pressure drop the pulse jet bag filter was found in the order of filtration velocity($V_f$), pulse pressure($P_p$), inlet dust concentration($C_i$), pulse interval($P_i$). Also, the prediction result of filtration velocity, inlet dust concentration, pulse pressure, and pulse interval which showed the largest effect on the pressure drop indicated that stable operation can be executed with filtration velocity less than 1.5 m/min and inlet dust concentration less than $4g/m^3$. However, it was regarded that pulse pressure and pulse interval need to be adjusted when inlet dust concentration is higher than $4g/m^3$. When filtration velocity and pulse pressure were examined, operation was possible regardless of changes in pulse pressure if filtration velocity was at 1.5 m/min. If filtration velocity was increased to 2 m/min. operation would be possible only when pulse pressure was set at higher than $5.8kgf/cm^2$. Also, the prediction result of pressure drop with filtration velocity and pulse interval showed that operation with pulse interval less than 50 sec. should be carried out under filtration velocity at 1.5 m/min. While, pulse interval should be set at lower than 11 sec. if filtration velocity was set at 2 m/min. Under the conditions of filtration velocity lower than 1 m/min and high pulse pressure higher than $7kgf/cm^2$, though pressure drop would be less, in this case, economic feasibility would be low due to increased in installation and operation cost since scale of dust collection equipment becomes larger and life of filtration bag becomes shortened due to high pulse pressure.

Keywords

References

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