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Numerical Study on Compact Design in Marine Urea-SCR Systems for Small Ship Applications

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  • Wontak Choi

    (Graduate Program, Department of Energy and Mechanical Engineering, Gyeongsang National University, Tongyeong-si 53064, Republic of Korea)

  • Seunggi Choi

    (Graduate Program, Department of Energy and Mechanical Engineering, Gyeongsang National University, Tongyeong-si 53064, Republic of Korea)

  • Sangkyung Na

    (Revo Co., Ltd., Changwon-si 51150, Republic of Korea)

  • Dongmin Shin

    (Department of Smart Energy and Mechanical Engineering, Gyeongsang National University, Tongyeong-si 53064, Republic of Korea)

  • Hyomin Jeong

    (Department of Smart Energy and Mechanical Engineering, Gyeongsang National University, Tongyeong-si 53064, Republic of Korea)

  • Yonmo Sung

    (Department of Smart Energy and Mechanical Engineering, Gyeongsang National University, Tongyeong-si 53064, Republic of Korea)

Abstract

With increasingly stringent emissions legislation, such as that stipulated by the International Maritime Organization, for nitrogen oxide emission reduction in marine diesel engines, the imperative of curtailing nitrogen oxide emissions from marine diesel engines is intensifying. Consequently, the significance of aftertreatment technologies, including diesel particulate filters (DPFs) and selective catalytic reduction (SCR), is poised to grow substantially. In particular, a redesign is required to reduce the size of DPF and SCR systems for application in small ships. In this study, we varied the shape of the filters in DPF and SCR systems, aiming to achieve a distinct flow pattern and enable overall miniaturization. The performance metrics, including the nitric oxide (NO) reduction rate, NH 3 slip rate, and pressure drop, of the redesigned models were compared with those of the conventional model. Computational fluid dynamics simulations were used to compare the performance of the redesigned model with that of the conventional model in terms of NO reduction and pressure drop. The redesigned system achieved a NO reduction rate of 6.9% below that of the conventional system, offering additional noteworthy benefits such as a 50% reduction in both pressure and overall length.

Suggested Citation

  • Wontak Choi & Seunggi Choi & Sangkyung Na & Dongmin Shin & Hyomin Jeong & Yonmo Sung, 2023. "Numerical Study on Compact Design in Marine Urea-SCR Systems for Small Ship Applications," Energies, MDPI, vol. 17(1), pages 1-16, December.
    • Handle: RePEc:gam:jeners:v:17:y:2023:i:1:p:187-:d:1309789
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    References listed on IDEAS

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