摘要
为较全面表征低低温电除尘系统(FGC+ESP)对SO_(3)减排特性,提出了一种低浓度SO_(3)测试方法,即“2级控制冷凝+1级异丙醇吸收”采样法,可提高其测试数据的准确性。基于此,测定中试平台低低温电除尘系统(ESP入口90℃)的SO_(3)脱除效率为96.15%。3个工程项目4组现场实测数据中,低低温电除尘系统对SO_(3)脱除效率在69.1%~96.6%,分析并验证了低低温工况下飞灰颗粒对SO_(3)的吸附、团聚机制。研究结果可为低低温电除尘技术的大规模推广应用及燃煤电厂SO_(3)减排提供借鉴。
In order to fully characterize the emission reduction performance of SO_(3) by low-low temperature electrostatic precipitator system(FGC+ESP),a method to test low-concentration SO_(3) was proposed,namely“two-stage controlled condensation+one-stage isopropanol absorption”sampling method,which can improve the accuracy of its test data.According to this method,in the pilot test,the SO_(3) removal efficiency of the low-low temperature electrostatic precipitator(LL-ESP)system(90℃at ESP entrance)was 96.15%.In four groups of field measured data from three engineering projects,the SO_(3) removal efficiency of LL-ESP system was 69.1%-96.6%.The mechanism of SO_(3) adsorption and agglomeration by fly ash particles under low-low temperature conditions was verified.The study results can provide reference for the large-scale promotion and application of LL-ESP technology and SO_(3) emission reduction of coal-fired power plants.
作者
刘含笑
郦建国
姚宇平
崔盈
郭高飞
何海涛
刘美玲
沈敏超
LIU Hanxiao;LI Jianguo;YAO Yuping;CUI Ying;GUO Gaofei;HE Haitao;LIU Meiling;SHEN Minchao(Zhejiang Feida Environmental Science&Technology Co.,Ltd.,Zhuji 311800,Zhejiang Province,China)
出处
《发电技术》
2022年第1期147-154,共8页
Power Generation Technology
基金
国家重点研发计划项目(2016YFC0209107)。
关键词
燃煤电厂
超低排放
低低温电除尘系统
SO_(3)测试方法
脱除性能
coal-fired power plant
ultra-low emission
low-low temperature electrostatic precipitator system
SO_(3)test method
removal performance
作者简介
刘含笑(1987),男,硕士,工程师,主要从事电力环保技术研发工作,gutounan@163.com。
