疏水性PTFE膜在船舶废气脱硫中的应用  

Application of hydrophobic PTFE membrane in ship exhaust gas desulfurization

作　　者：王新乐 刘铭辉 陈珍慧 冯道伦 廖德祥 宿鹏浩 王妮 WANG Xinle;LIU Minghui;CHEN Zhenhui;FENG Daolun;LIAO Dexiang;SU Penghao;WANG Ni(CNOOC EnerTech-Safety&Environmental Protection Co.,Ltd.,Tianjin 300457,China;College of Ocean Science and Engineering,Shanghai Maritime University,Shanghai 201306,China)

机构地区：[1]中海油能源发展股份有限公司安全环保分公司,天津300457 [2]上海海事大学海洋科学与工程学院,上海201306

出　　处：《上海海事大学学报》2023年第3期107-112,共6页Journal of Shanghai Maritime University

基　　金：海油发展科技项目(HFKJ-AQ-201808);天津市重点研发计划科技支撑重点项目(19YFZCSF00930)。

摘　　要：为解决目前船舶废气中SO_(2)排放不达标的问题,利用聚四氟乙烯(polytetrafluoroethylene,PTFE)中空纤维膜搭建船舶废气膜法海水脱硫系统,包括废气冷却除尘预处理单元和PTFE膜法脱硫单元。在船舶发动机功率为14、27、41 kW等3种工况下,研究其对废气中SO_(2)的脱除效果。结果表明:干净的冷却水能吸收废气中部分SO_(2),且系统在任一工况下运行30 min后冷却水对SO_(2)的吸收达到饱和;当冷却水水温控制在15℃,喷淋量大于4 m^(3)/h时,喷淋后的废气温度均可控制在40℃以下;只要控制模拟海水的pH在7.0以上,PTFE膜法脱硫单元对废气中SO_(2)的脱除率均可达到100%。In order to solve the problem of substandard SO_(2)emission in ship exhaust gas,a membrane seawater desulfurization system of ship exhaust gas is built using the polytetrafluorothylene(PTFE)hollow fibre membrane,including the exhaust gas cooling and dust removal pre-treatment unit and the PTFE membrane desulfurization unit.The system s removal effect of SO_(2)in the exhaust gas is studied under three conditions that the ship engine power is 14,27 and 41 kW.The results show that:the clean cooling water can absorb part of SO_(2)in the exhaust gas,and SO_(2)in the cooling water reaches saturation after 30 min of system operation under each condition;when the cooling water temperature is controlled at 15℃and the spray amount is greater than 4 m^(3)/h,the exhaust gas temperature after spraying can be controlled below 40℃;as long as pH of the simulated seawater is controlled above 7.0,the PTFE membrane desulfurization unit can achieve 100%removal rate of SO_(2)in the exhaust gas.

关 键 词：PTFE膜 船舶废气 海水脱硫 

分 类 号：U664.9[交通运输工程—船舶及航道工程] X701.3[交通运输工程—船舶与海洋工程]