Journal of the Korean Society of Marine Environment & Safety (해양환경안전학회지)

The Korean Society of Marine Environment and safety (해양환경안전학회)
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Study on the Inlet Shape of a Selective Catalyst Reduction System with an Integrated Bypass Unit for Ships

Bypass 일체형 선박용 탈질설비의 입구형태에 대한 연구

  • Ha, Soo-Hyeon (Division of Maritime Transportation Science, Gyeongsang National University) ;
  • Lee, Jae-Chul (Department of Naval Architecture & Ocean Engineering, Gyeongsang National University) ;
  • Lee, Sang-Beom (Daewoo Shipbuilding & Marine Engineering Co. Ltd.) ;
  • Kang, Donghoon (Department of Naval Architecture & Ocean Engineering, Gyeongsang National University)
  • 하수현 (경상국립대학교 해양시스템공학과) ;
  • 이재철 (경상국립대학교 조선해양공학과) ;
  • 이상범 (대우조선해양(주)) ;
  • 강동훈 (경상국립대학교 조선해양공학과)
  • Received : 2021.06.24
  • Accepted : 2021.08.27
  • Published : 2021.08.31
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Abstract

A selective catalyst reduction system (SCR) with an integrated bypass unit is proposed. Through simulations of the SCR, variations in flow to the catalyst due to the particular shape of the bypass shutting device in the SCR are also studied. The commercial software Ansys Fluent is used to develop the simulations. For the simulations, the catalyst of the SCR is modeled using the porous media method to reduce the calculation time and number of meshes, which is necessary because of the detailed modeling of the catalyst. Simulations are performed based on changes to the entrance angle to the catalyst and the size of the bypass shutting device. Finally, simulation results are used to compare and analyze the average velocity and uniformity of the flow to the catalyst.

Bypass line과 Catalyst를 공간적으로 결합한 Bypass 일체형 탈질설비를 제안하였다. 탈질설비 내부에 설치되는 Bypass의 개폐장치의 형태에 따른 Catalyst로의 유동 변화를 확인하기 위하여 상용프로그램인 Ansys Fluent를 사용하여 탈질설비를 모델링하고 시뮬레이션을 구성하였다. 탈질설비 내의 Catalyst로 인한 계산시간과 Mesh의 수를 줄이기 위해 Porous media방식으로 Catalyst를 모델링하였다. Catalyst로의 입구각도와 Bypass 개폐장치의 크기를 변화시키면서 시뮬레이션을 수행하고 시뮬레이션의 결과로 Catalyst로의 유동 평균속도와 균일도의 변화를 확인하였다.

Keywords

Acknowledgement

본 연구는 2020년도 중소벤처기업부의 기술개발사업 지원에 의한 연구임 [S2872625]

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