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http://dx.doi.org/10.7837/kosomes.2022.28.6.1092

A Basis Study on the Optimal Design of the Integrated PM/NOx Reduction Device  

Choe, Su-Jeong (Division of Marine System Engineering, Korea Maritime and Ocean University)
Pham, Van Chien (Korea Maritime and Ocean University)
Lee, Won-Ju (Division of Marine System Engineering, Korea Maritime and Ocean University)
Kim, Jun-Soo (Korea Institute of Maritime and Fisheries Technology)
Kim, Jeong-Kuk (Division of Marine System Engineering, Korea Maritime and Ocean University)
Park, Hoyong (Advanced Ship Research Division, Korea research institute of ship & ocean engineering Advanced Ship Research Division)
Lim, In Gweon (CATech Inc.)
Choi, Jae-Hyuk (Division of Marine System Engineering, Korea Maritime and Ocean University)
Publication Information
Journal of the Korean Society of Marine Environment & Safety / v.28, no.6, 2022 , pp. 1092-1099 More about this Journal
Abstract
Research on exhaust aftertreatment devices to reduce air pollutants and greenhouse gas emissions is being actively conducted. However, in the case of the particulate matters/nitrogen oxides (PM/NOx) simultaneous reduction device for ships, the problem of back pressure on the diesel engine and replacement of the filter carrier is occurring. In this study, for the optimal design of the integrated device that can simultaneously reduce PM/NOx, an appropriate standard was presented by studying the flow inside the device and change in back pressure through the inlet/outlet pressure. Ansys Fluent was used to apply porous media conditions to a diesel particulate filter (DPF) and selective catalytic reduction (SCR) by setting porosity to 30%, 40%, 50%, 60%, and 70%. In addition, the ef ect on back pressure was analyzed by applying the inlet velocity according to the engine load to 7.4 m/s, 10.3 m/s, 13.1 m/s, and 26.2 m/s as boundary conditions. As a result of a computational fluid dynamics analysis, the rate of change for back pressure by changing the inlet velocity was greater than when inlet temperature was changed, and the maximum rate of change was 27.4 mbar. This was evaluated as a suitable device for ships of 1800kW because the back pressure in all boundary conditions did not exceed the classification standard of 68mbar.
Keywords
After-treatment System; Particulate Matters (PM); Nitrogen oxides (NOx); Integration; Diesel Particulate Filter (DPF); Selective Catalyst Reaction (SCR); Porous Media; Back Pressure;
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Times Cited By KSCI : 2  (Citation Analysis)
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