Development of Super Economical and Compact Marine Diesel EmissionControl using Integrated Plasma Combined Processes

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The collection of low resistive particulates generated from marine diesel engine had been known to be difficult using the conventional electrostatic precipitators. The electrohydrodynamically-assisted electrostatic precipitator (EHD ESP) was developed to suppress the particle reentrainment. A nobel NOx reduction system, which consists of adsorption, desorption, followed by nonthermal nitrogen plasma was developed. In addition, the plasma ESP, which is able to collect and incinerate particles within the same unit. Furthermore, reactive species injection for PM reduction and NOx recirculation EGR system were developed. Those technologies were integrated to achieve more than 90% PM and NOx reduction, leading to extremely economical and compact marineengine emission control.