Journal of the Korean Society of Visualization (한국가시화정보학회지)

The Korean Society of Visualization (한국가시화정보학회)
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Numerical analysis of the characteristics of pressure drop and flow uniformity inside a SCR system

SCR 시스템 전산해석을 통한 압력 강하 및 유동 균일도 분석

  • Dori Kim (Department of Mechanical and Automotive Engineering, Seoul National University) ;
  • Sichan Geum (Department of Mechanical and Automotive Engineering, Seoul National University) ;
  • Nguyen Duc Hay (Department of Mechanical Engineering, Seoul National University) ;
  • Ho Im (Research Institute of Industrial Science & Technology) ;
  • Ryanggyoon Kim (Research Institute of Industrial Science & Technology) ;
  • Gyubo Kim (Research Institute of Industrial Science & Technology) ;
  • Yeongdo Park (Research Institute of Industrial Science & Technology) ;
  • Kyeongwan Han (POSCO) ;
  • Sung Goon Park (Department of Mechanical and Automotive Engineering, Seoul National University)
  • Received : 2024.09.24
  • Accepted : 2024.10.22
  • Published : 2024.11.30
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Abstract

The study investigates the application of Selective Catalytic Reduction (SCR) systems in steel manufacturing processes. To calculate the pressure drop occurring in the SCR system's catalytic plates under various operating conditions, we assumed a porous filter model. The pressure drop along the gas flow path is determined by theoretical calculations and computational simulations. The discrepancy in the data obtained from the both approach happens in the region of curved sections of SCR system where secondary flows occur. The pressure drop was calculated depending on different flow rate, by which a correlation between the pressure drop and the flow rate was made based on the simulation results. Inside the SCR system, boundary layer separation occurs before the SCR chamber, causing the flow to deviate in one direction. As a result, the flow uniformity decreases in the SCR chamber, which could lead to a decrease in the reaction performance on the catalytic plates. By installing baffles at the inlet region of the SCR chamber, the uniformity is enhanced by around 18.8% based on the standard deviation.

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Acknowledgement

본 연구는 포항산업과학연구원의 지원으로 수행되었습니다.

References

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