Design of Mixed Scrubbing and Desulfurization System for a Marine Engine

Along with the rapid development of the shipbuilding industry, the control of SO_x in the exhaust gas discharged from marine power plants has become increasingly strict. Unlike NOx emissions, sulphur oxide are derived from fuels, and economic and practical considerations need to be considered while looking for alternative fuels and low-sulfur fuels. Therefore, post-treatment of emissions is the best means to control SO_x. In order to meet the new IMO emission control standards, a more stringent exhaust gas desulfurization system should be designed. In this paper, the design of the mixed ship exhaust gas desulfurization system is studied. The absorption principle and the respective characteristics of the seawater method open desulfurization system are analyzed. The spray tower was selected as the desulfurization absorption equipment, and the seawater was used as the main absorbent to calculate the size data of the spray tower, the spray device and the size of the gas inlet and outlet. A set of specific exhaust gas desulfurization systems was designed for the design of liquid handling equipment, piping and pumps. (paper)