船用发动机SCR脱硝工艺中试系统浅析  

Pilot-scale System Analysis of SCR Denitrification Process for Marine Engine

作　　者：邓军 DENG Jun(Changsha Hasky Environmental Protection Science&Technology Development Co.,Ltd.,Hunan Changsha 410000;Shanghai Hengyuan Marine Equipment Co.,Ltd.,Shanghai 201709,China)

机构地区：[1]长沙华时捷环保科技发展股份有限公司,湖南长沙410000 [2]上海亨远船舶设备有限公司,上海201709

出　　处：《广州化工》2023年第5期188-190,202,共4页GuangZhou Chemical Industry

基　　金：工业和信息化部高技术船舶科研计划重大工程与专项(CDGC01-KT16)。

摘　　要：以DAIHATSU船用中速6冲程发动机6DL-20为基础搭建一套选择性催化还原(Selective Catalytic Reduction,SCR)脱硝工艺中试系统,配备尿素自动添加模块,处理发动机尾气中的NO_(x),通过探究不同工况下的尿素加入量即氨氮比(Ratio of Ammonia to Nitrogen,ANR)得知,在ANR=0.92的情况下,SCR系统能维持90%以上的脱硝效率,氨逃逸低于10 mL/m^(3),NO_(x)加权比排放为0.7 g/kW·h,处理效果优于国际海事组织(International Maritime Organization,IMO)规定的比排放值2.414 g/kW·h。此外,对中试试验过程中出现的问题进行分析与探讨,提出相应的应对解决方案。Based on DAIHATSU 6DL-20 marine medium-speed engine with 6-stroke,a pilot-scale system of SCR denitrification process was built which equipped with urea auto-adding module to deal with NO_(x) of engine exhaust gas.By exploring the amount of urea addition ANR under different working conditions,it was known that when ANR=0.92,the denitrification efficiency of SCR system could be up to more than 90%,the ammonia escape belowed 10 mL/m^(3),the weighted emission of NO_(x) was 0.7 g/kW·h which was better than IMO limit value 2.414 g/kW·h.In addition,the problems in the pilot test were analyzed and discussed,and the corresponding solutions were put forward.

关 键 词：船用 选择性催化还原 脱硝 中试系统 

分 类 号：U664.1[交通运输工程—船舶及航道工程] X736.3[交通运输工程—船舶与海洋工程]