Abstract
In order to reduce air pollution caused by fine dust, the emission standards for environmental pollutants generated from ships are being strengthened. The fine dust reduction device for ships needs a function that can be used in combination with SCR(Selective Catalytic Reduction) due to the limited space of the engine room. In this study, gas flow analysis was performed to predict the dust collection efficiency of the electrostatic precipitator to develop the electrostatic precipitator with low back pressure for 300 kW class of marine diesel engine. In order to analyze the dust collection efficiency according to the shape of the electrode and collecting plate, the gas flow was analyzed by modeling the three shapes, and the theoretical dust collecting efficiency was calculated for the three models. Based on the results of gas flow analysis, the dust collecting efficiency of the semicircular designed the electrode and collecting plate was found to be the highest. In the future, the gas flow analysis results of this study will be used to develop the semicircular electrode and collecting plate as well as to improve the dust collection efficiency of the electrostatic precipitator.
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