二冲程低速船用柴油机SCR系统的技术分析与应用  

Technical Analysis and Application of SCR System for Two-Stroke Low-Speed Marine Diesel Engine

作　　者：彭陈[1] PENG Chen(College of Marine Electrical and Intelligent Engineering,Jiangsu Maritime Institute,Nanjing 211170,China)

机构地区：[1]江苏海事职业技术学院轮机电气与智能工程学院,南京211170

出　　处：《船舶工程》2021年第12期106-109,119,共5页Ship Engineering

基　　金：2019年江苏省高等学校自然科学研究面上项目(2019-151);2019年江苏海事职业技术学院科技创新基金项目(2019-01);江苏省高职院校教师专业带头人高端研修项目(团队访学2020-5)。

摘　　要：文章介绍了SCR系统的结构与原理,并对6S50ME-C型低速柴油机的SCR系统进行了技术分析和应用测试,结果表明,使用低负荷方法可获得SCR催化剂所需的最低运行速度;通过SCR流场优化,进一步降低排气压力,使其具有比标准排气集管更低的压力损失;SCR系统可保证NO_(X)循环值为2.8 g/(kW·h),低于IMO Tier Ⅲ限值3.4 g/(kW·h),满足IMO Tier Ⅲ NO_(X)限制标准。The structure and principle of SCR system are introduced,and the technical analysis and application test of SCR system of 6S50ME-C low-speed diesel engine are carried out.The results show that the minimum operating speed of SCR catalyst can be obtained by using low load method.Through the optimization of SCRflow field,the exhaust pressure is further reduced to make it have lower pressure loss than the standard exhaust header.The SCR system can ensure that the NO;cycle value is 2.8 g/(kW·h),which is lower than the IMO tier III limit value of 3.4 g/(kW·h),meeting the IMO tier III NO;limit standard.

关 键 词：低速船用柴油机 二冲程 SCR系统 技术分析 

分 类 号：U664.12[交通运输工程—船舶及航道工程]