Design and experimental study on desulphurization process of ship exhaust

International Conference on Energy Engineering and Environmental Protection 2017

能源学;生态环境科学

Han, Mingyang^1 ; Hao, Shan^1 ; Zhou, Junbo^1 ; Gao, Liping^1

Beijing University of Chemical Technology, Beijing

100029, China^1

关键词: De-sulfurization process;    Desulphurization process;    Exhaust flow rates;    Key equipment;    Laboratory conditions;    PH adjustment;    Pre-Treatment;    Sulfur removal efficiency;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/121/3/032005/pdf
DOI  :  10.1088/1755-1315/121/3/032005

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

This desulfurization process involves removing sulfur oxides with seawater or alkaline aqueous solutions and then treating the effluent by aeration and pH adjustment before discharging it into the ocean. In the desulfurization system, the spray tower is the key equipment and the venturi tubes are the pretreatment device. The two stages of plates are designed to fully absorb sulfur oxides in exhaust gases. The spiral nozzles atomize and evenly spray the desulfurizers into the tower. This study experimentally investigated the effectiveness of this desulfurization process and the factors influencing it under laboratory conditions, with a diesel engine exhaust used to represent ship exhaust. The experimental results show that this process can effectively absorb the SO2in the exhaust. When the exhaust flow rate was 25 m3/h and the desulfurizer flow rate was 4 L/min, the sulfur removal efficiency (SRE) reached 99.7%. The flow rate, alkalinity, and temperature of seawater were found to have significant effects on the SRE. Adjusting seawater flow rate (SWR) and alkalinity within certain ranges can substantially improve the SRE.