低低温电除尘系统对SO3脱除性能研究
摘要：为较全面表征低低温电除尘系统(FGC+ESP)对SO3减排特性，提出了一种低浓度SO3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SO3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SO3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SO3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SO3减排提供借鉴。
Abstract:In order to fully characterize the emission reduction performance of SO3 by low-low temperature electrostatic precipitator system (FGC+ESP), a method to test low-concentration SO3 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 SO3 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 SO3 removal efficiency of LL-ESP system was 69.1%-96.6%. The mechanism of SO3 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 SO3 emission reduction of coal-fired power plants.
标题：低低温电除尘系统对SO3脱除性能研究
title:Study on SO3 Removal Performance of Low-low Temperature Electrostatic Precipitator System
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
authors:Hanxiao LIU, Jianguo LI, Yuping YAO, Ying CUI, Gaofei GUO, Haitao HE, Meiling LIU, Minchao SHEN
关键词：燃煤电厂,超低排放,低低温电除尘系统,SO3测试方法,脱除性能,
keywords:coal-fired power plant,ultra-low emission,low-low temperature electrostatic precipitator system,SO3 test method,removal performance,
发表日期：2022-02-28
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