Journal of the Korean Society of Manufacturing Process Engineers (한국기계가공학회지)

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
권호 표지
DOI QR코드

DOI QR Code

Computational Study on the Application of Porous Media to Fluid Flow in Exhaust Gas Scrubbers

배기가스 세정장치내 유체 유동에 대한 다공성 매질 적용 기반의 전산해석적 연구

  • Hong, Jin-pyo (Graduate School of Advanced Defense Engineering, Changwon National University) ;
  • Yoon, Sang-hwan (Graduate School of Advanced Defense Engineering, Changwon National University) ;
  • Yoon, Hyeon-kyu (Graduate School of Advanced Defense Engineering, Changwon National University) ;
  • Kim, Lae-sung (Graduate School of Advanced Defense Engineering, Changwon National University) ;
  • An, Jun-tae (Graduate School of Mechanical Engineering, Changwon National University)
  • 홍진표 (창원대학교 첨단방위공학과정) ;
  • 윤상환 (창원대학교 첨단방위공학과정) ;
  • 윤현규 (창원대학교 첨단방위공학과정) ;
  • 김래성 (창원대학교 첨단방위공학과정) ;
  • 안준태 (창원대학교 기계공학과정)
  • Received : 2021.10.19
  • Accepted : 2021.11.02
  • Published : 2022.02.28
Download PDF
⟨ Previous Next ⟩

Abstract

Exhaust gases emitted from internal combustion engines contain nitrogen oxides (NOx) and sulfur oxides (SOx), which are major air pollutants causing acid rain, respiratory diseases, and photochemical smog. As a countermeasure, scrubber systems are being studied extensively. In this study, the pressure drop characteristics were analyzed by changing the exhaust gas inflow velocity using a scrubber for a 700 kW engine as a model. In addition, the fluid flow inside the scrubber and the behavioral characteristics of the droplets were studied using CFD, and the design compatibility of the cleaning device was verified. Flow analysis was performed using inertial and viscous resistances by applying porous media to the complex shape of the scrubber. The speed of the exhaust passing through the outlet nozzle from the inlet was determined through the droplet behavior analysis by spraying, and the flow characteristics for the pressure drop were studied. In addition, it was confirmed through computational analysis whether there was a stagnation section in the exhaust gas flow in the scrubber or the sprayed droplets were in good contact with the exhaust gas.

Keywords

References

  1. Son, K., Lee, J. Y., and Park, K. H., "The effect of spray flow rate, aspect ratio, and filling rate of wet scrubber on smoke reduction," Journal of the Korean Society of Marine Engineering, Vol. 39, No. 3, pp. 217-222, 2015. https://doi.org/10.5916/jkosme.2015.39.3.217
  2. Choi, J. S., Kim, J. G., Park, B. H. and Lee, J. Y., "Study on wet scrubber for SOx/NOx treatment in ship flue gas," Journal of Korean Oil Chemists Society, Vol. 34, No. 1, pp. 183-188, 2017.
  3. Lee, C. H., Jang, H. S. and Koo, S. M., "Computational analysis on the control of droplet entrained in the exhaust from the spray type scrubber system," Clean Technology, Vol. 21, No. 3, pp. 191-199, 2015. https://doi.org/10.7464/KSCT.2015.21.3.191
  4. Heo, J. S., "Numerical Analysis of Fluid Flow and Thermal Characteristics within Medium and Large Size Ship Scrubber System," A Thesis for a Master, Wonkwang University, Republic of Korea, 2016.
  5. Kim, I. C., Kim, C. G., Park, S. J., Cho, D. Y. and Lee, Y. H., "Designation of fuel oil scrubber nozzle positioning using CFD analysis and PIV methods," Journal of the Korean Society of Marine Engineering, Vol. 39, Vo. 7, pp. 773-778, 2015. https://doi.org/10.5916/jkosme.2015.39.7.773
  6. Lee, S. M., Kwon, B. M. and Park, K. H., "Flow characteristics according to internal structure of square wet scrubber," Journal of Advanced Marine Engineering and Technology, Vol. 43, No. 1, pp. 1-7, 2019. https://doi.org/10.5916/jkosme.2019.43.1.1
  7. Gant, S. E., CFD Modelling of water spray barriers, Health & Safety Laboratory, pp. 11-31 2006.
  8. Bae, J. H., Bae, M. A., Ahn, J. K., Kim, M. H., Kang S. J. and Lee M. S., "Computational Fluid Dynamic(CFD) for Design of Mist Eliminator," Journal of the Korea Academia Industrial Cooperation Society Fall Conference, 2011.
  9. Min, K. S., Kim, D. H., Chan, W. S., Lee, S. Y., Jang, S. P. and Koo, J., "Experimental Study of Pressure Drop in Compressible Fluid through Porous Media," Journal of the Korean Society of Mechanical Engineers, Vol. 37, No. 8, pp. 759-765, 2013.