文献类型：期刊文献

英文题名：A Novel Method for Simultaneous Removal of NO and SO2 from Marine Exhaust Gas via In-Site Combination of Ozone Oxidation and Wet Scrubbing Absorption

作者：Han, Zhitao[1,2];Zou, Tianyu[1,2];Wang, Junming[1,2,3];Dong, Jingming[1,2];Deng, Yangbo[1,2];Pan, Xinxiang[1,2,4]

机构：[1]Dalian Maritime Univ, Marine Engn Coll, Dalian 116026, Peoples R China;[2]Dalian Maritime Univ, Liaoning Res Ctr Marine Internal Combust Engine E, Dalian 116026, Peoples R China;[3]China Classificat Soc, Yantai Off, Qingdao Branch, Yantai 264000, Peoples R China;[4]Guangdong Ocean Univ, Coll Ocean Engn, Zhanjiang 524088, Peoples R China

年份：2020

卷号：8

期号：11

起止页码：1

外文期刊名：JOURNAL OF MARINE SCIENCE AND ENGINEERING

收录：SCI-EXPANDED(收录号：WOS:000593161800001)、、WOS

基金：This research was funded by National Natural Science Foundation of China, grant number 51779024, and Fundamental Research Funds for the Central Universities, grant number 3132019330.

语种：英文

外文关键词：marine exhaust gas; NO oxidation; ozone injection; wet scrubbing; in-situ combination

外文摘要：The stringent international regulations on marine emission abatement have exerted a huge push on the development of marine desulfurization and denitrification technologies. However, for the traditional vessels driven by large two-stroke diesel engines, simultaneous removal of NOx and SO2 is still a big challenge at present. Here, a one-stage ozone oxidation combined with in-situ wet scrubbing for simultaneous removal of NO and SO2 is proposed. A series of experiments were performed based on a bench-scale reaction system. The results showed that in-situ wet scrubbing could effectively decrease flue gas temperature, and then suppress the thermal decomposition of ozone, which was beneficial for improve oxidant utilization. Meanwhile, the in-situ combination of ozone injection and wet scrubbing was in favor of improving the selectivity oxidation of NO over SO2 by ozone, which was possibly due to the high aqueous solubility of SO2 in water. Aiming to reduce the electric power consumption by an ozone generating system, O-3/NO molar ratio was kept as low as possible. A complete removal of SO2 and a high NOx removal efficiency could be achieved through the introduction of other oxidative additives in scrubbing solution. This integrated system designed for marine application was of great significance.