船舶湿法脱硫排气白色烟羽治理技术  

White Plume Treatment Technology for Wet Desulfurization Exhaust Gas of Ships

作　　者：李明 肖飞 杨阳 薛京 LI Ming;XIAO Fei;YANG Yang;XUE Jing(Shanghai Marine Diesel Engine Research Institute,Shanghai 201108,China)

机构地区：[1]上海船用柴油机研究所,上海201108

出　　处：《柴油机》2024年第1期22-28,共7页Diesel Engine

基　　金：船舶与海洋工程特种装备和动力系统国家工程研究中心资助项目。

摘　　要：基于温湿图切线模型,采用直接加热法、空气加热混合法和冷凝法对温度为20~30℃、相对湿度为80%的船舶烟气进行消白设计。经湿法脱硫后,对于温度为30℃的烟气,用空气加热混合法所需的临界温升为直接加热法的49%,且空气加热混合法工艺较简单,经济性更好。针对某船舶主机设计空气加热混合法除白烟方案,加装混合器后,烟气和空气混合更均匀。CFD计算结果显示,在当量比为7.6%的理想空气条件下,混合器可使换热效果从4%提升至62%;当量比为13.7%时经济性较好,换热效果可达90%。Based on the tangent model of the temperature-humidity diagram,the design of de-plume system was carried out for ship flue gas at 20‒30℃and 80%relative humidity using direct heating method,mixing air heating method and condensation method.For flue gas at 30°C after wet desulfurization,the critical temperature rise required by the mixing air heating method was only 49%of that of the direct heating method.The mixing air heating method had a simpler process and better economy.The de-plume system was designed for a ship main engine using mixing air heating method,and the installation of a mixer can make the flue gas and air mix more evenly.The CFD calculation results show that the mixer can increase the heat transfer effect from 4%to 62%at 7.6%ideal air equivalent ratio,and when the air equivalent ratio is 13.7%,the economy is better,and the heat transfer efficiency can reach 90%.

关 键 词：湿法脱硫 烟羽治理 空气加热混合法 混合器温度场 

分 类 号：U664.121[交通运输工程—船舶及航道工程]