Abstract
Abstract Exhaust gases emitted from ships were regulated in MARPOL Treaty 73/78 Annex VI of IMO for air pollution control. In this paper, results of a fundamental development for an electrostatic precipitation (ESP) and a demonstration test for cleaning exhaust gases were described. In fundamental research, the characteristics of ESP with a heat exchanger were explained. It was described that ESP without a heat exchanger was able to remove dry soot and nano-particles, which were included with exhaust gas, in high efficiency. It was also indicated that particulate matters were generated due to condensation of gaseous soluble organic fraction and sulphate in the case of gas cooled by a heat exchanger, whereby these were also removed by ESP. In demonstration test, it was confirmed that high removal efficiency for 24 hours in ESP pilot plant was possible.
