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http://dx.doi.org/10.7837/kosomes.2021.27.5.666

Study on the Inlet Shape of a Selective Catalyst Reduction System with an Integrated Bypass Unit for Ships  

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)
Publication Information
Journal of the Korean Society of Marine Environment & Safety / v.27, no.5, 2021 , pp. 666-674 More about this Journal
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.
Keywords
Selective catalytic reduction; Bypass line; Catalyst; Porous media; Flow uniformity;
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  • Reference
1 IMO(International Maritime Organization)(2008), Report of The Marine Environment Protection Committee On ITS Fifty-Eighth Session, Marine Environment Protection Committee, MEPC 58/23/Add.1.
2 Park, I. S., C. S. Lee, J. S. Suh, K. Y. Jeong, and C. D. Park(2013), A Study on the Flow uniformity in SCR Reactor Follow Area Ratio, The Korean Society of Mechanical Engineers, pp. 4084-4087.
3 Park, M. J., H. S. Chang. and J. S. Ha(2010), Numerical Study on the Baffle Structure for Determining the Flow Characteristic in Small Scale SCR System, Journal of Korean Society of Environmental Engineers, Vol. 32, No. 9, pp. 862-869.
4 Park, Y. Y., H. C. Song, G. J. Ahn, and C. S. Shim(2016b), Preliminary Study on Factor Technology of Selective Catalytic Reduction System in Marine Diesel Engine, Journal of Navigation and Port Research, Vol. 40, No. 4, pp. 173-181.   DOI
5 Sim, J. H., J. H. Hong, J. R. Lee, and S. U. Kim(2017), Analysis for Flow Uniformity in SCR Reactor of a 1200~1800kw Marine Engine, The Korean Society of Mechanical Engineers, pp. 1675-1677.
6 YANMAR(2018), Marine SCR System for Compliance with IMO NOx Tier 3 Regulations, YANMAR Technical Review, Spring 2018, https://www.yanmar.com/global/about/technology/technical_review/.
7 Jeong, H. Y., T. Y. Kim, E. M. Im, and D. H. Lim(2018), Optimum Synthesis Conditions of Coating Slurry for Metallic Structured De-NOx Catalyst by Coating Process on Ship Exhaust Gas, Clean Technol., Vol. 24, No. 2, pp. 127-134.   DOI
8 Park, J. W., S. S. Park, K. W. Ku, and J. G. Hong(2016a), Effect of NOx Removal Efficiency according to Space Velocity and Linear Velocity of SCR Catalyst, Journal of ILASS-KOREA Vol. 21, No. 2, pp. 71-77.   DOI
9 Won J. M. and S. C. Hong(2019), Selective Catalytic Reduction (SCR) Technology Trend for the Removal of Nitrogen Oxide from Ship Flue Gas, KIC News, Vol. 22, No. 5, pp. 25-40.
10 Ahn, Y. S.(2019), A Study on Assessment and Certification System for Reduction Technology of Emission from Ships, Korea Maritime Institute Research Project Report 2019-06.
11 Lee, C. S., I. G. Jeong, J. S. Suh, C. D. Park, and K. Y. Jeong(2012), A Numerical Analysis on Flow Uniformity of SCR Reactor for 5,000PS Grade Marine Engine, Journal of the Korean Society of Manufacturing Process Engineers, Vol. 11, No. 4, pp. 28-35.
12 Lindstad, E. and A. Rialland(2020), LNG and Cruise Ships, an Easy Way to Fulfil Regulations-Versus the Need for Reducing GHG Emissions, Sustainability, Vol. 12, pp. 1-15.   DOI
13 Hong, C. H., C. M. Lee, and S. D. Lee(2021), Temperature Variation of Exhaust Gas in Diesel Generator for Low Pressure SCR, Journal of the Korean Society of Marine Environment & Safety, Vol. 27, No. 2, pp. 355-362.   DOI