燃煤烟气治理不同阶段SO_(3)检测方法的对比研究  

Comparison and study on detection methods for SO_(3)at different stages of coal-burning flue gas treatment

作　　者：梁玉兰[1] 周川 郑芳 陈志杰[1] LIANG Yu-lan;ZHOU Chuan;ZHENG Fang;CHEN Zhi-jie(School of Ecology and Environment,Minxi Vocational and Technical College,Longyan 364021,China;School of Microelectronics,Tianjin University,Tianjin 300072,China;Fujian Longking Co.,Ltd.,Longyan 364099,China)

机构地区：[1]闽西职业技术学院生态环境学院,福建龙岩364021 [2]天津大学微电子学院,天津300072 [3]福建龙净环保股份有限公司,福建龙岩364099

出　　处：《现代化工》2023年第9期227-230,共4页Modern Chemical Industry

基　　金：国家重点研发计划资助项目(2016YFC0203703);福建省质量技术监督局科技项目资助(FJQ12017041);龙岩市科技计划项目(2017LY61)。

摘　　要：从控制冷凝法-实验室分析中的不同检测方法作为切入点,分析不同SO3测试方法的检出限和测定下限,结合烟气治理工艺,从而选择适用于烟气不同治理阶段的SO_(3)检测方法,并将测试方法应用于实际工程测试。结果表明,控制冷凝法-钍试剂滴定法SO_(3)检出限为0.100 mg/m^(3),控制冷凝法-离子色谱法检出限为0.004 mg/m^(3);前者便于即时分析,适用于烟气治理工艺中高浓度断面的测试,后者适用于除尘器出口、烟囱等低浓度断面的测试。Starting from different detection methods in controlled condensation method-laboratory analysis,the detection limit and determination lower limit of different SO_(3)detection methods are analyzed.Combined with flue gas treatment process,and the SO_(3)detection method suitable for different flue gas treatment stages is selected,and applied in practical engineering.It is shown that the detection limit of SO_(3)by control condensation method(CCM)combined with thorium reagent titration method is 0.100 mg·m^(-3),and that by CCM combined with ion chromatography is 0.004 mg·m^(-3),the former is suitable for the test of high concentration section in flue gas treatment process,the latter is suitable for the determination of low concentration section,such as outlet and chimney of wet electrostatic precipitator.

关 键 词：控制冷凝法 钍试剂滴定法 离子色谱法 检出限 

分 类 号：X831[环境科学与工程—环境工程]