高灰煤烟尘超低排放技术及其工程应用  

Ultra-low Emission Technology of PM for High Ash Coal and Its Engineering Application

作　　者：刘含笑 郦建国 张杨 李文勇 魏宏鸽 LIU Hanxiao;LI Jianguo;ZHANG Yang;LI Wenyong;WEI Hongge(Feida Environmental Protection Technology Co.,Ltd.,Zhuji,Zhejiang 311800,China;Huadian Electric Power Research Institute Co.,Ltd.,Hangzhou,Zhejiang 310030,China)

机构地区：[1]浙江菲达环保科技股份有限公司,浙江诸暨311800 [2]华电电力科学研究院有限公司,浙江杭州310030

出　　处：《广东电力》2022年第4期122-130,共9页Guangdong Electric Power

基　　金：国家重点研发计划项目(2016YFC0203704)。

摘　　要：基于高效除尘技术及烟气冷却器、选择性催化还原法脱硝催化剂的防磨举措分析,探讨燃用高灰机组在不使用湿式电除尘器的情况下达到超低排放的可行性。与常规电除尘器相比,低低温电除尘器提效显著,幅度在17.09%~53.17%,辅以精细化的气流均布技术,可以配合高效湿法脱硫实现高灰煤超低排放。在某660 MW机组开展工程应用,燃用灰分28.46%~33.85%的煤种,除尘系统运行状态良好,满足设计值要求及超低排放,且未发现明显的磨损及堵塞现象,为后续超低排放机组燃用劣质煤提供借鉴。Based on the research of efficient dust removal technology and analysis of anti-wear measures of flue gas cooler and selective catalytic reduction(SCR)denitration catalyst,this paper discusses ultra-low emission feasibility of coal-fired power plants without wet electrostatic precipitator(WESP)and with high ash inferior coal.Compared with the conventional electrical dust precipitator(ESP),the efficiency improvement range of the low-low temperature(LL-ESP)is significant,in 17.09%~53.17%.Supplemented by elaborating the airflow uniformly distributed technology,it can realize ultra-low emission of high ash coal with high efficiency wet desulphurization.In the engineering application of a 660 MW unit,the ash content of coal burned is 28.46%~33.85%and the dust removal system runs well,which meets the requirements of design value and ultra-low emissions.In addition,no obvious wears and blockage phenomena are discovered,which provides a reference for the subsequent ultra-low emission units to burn inferior coal.

关 键 词：燃煤电厂 超低排放 低低温电除尘器 高灰劣质煤 

分 类 号：TM621.73[电气工程—电力系统及自动化] TK223.27[动力工程及工程热物理—动力机械及工程]