烟气中三氧化硫及硫酸雾滴的分析方法  

The Analytic Method of Sulfur Trioxide and Sulfuric Acid Mist in Flue Gas

作　　者：肖雨亭 贾曼 徐莉 汪德志[2,3] 彭光军[2,3] 

机构地区：[1]国电集团脱硝催化剂分析测试中心,江苏无锡214151 [2]江苏龙源催化剂有限公司,江苏无锡214151 [3]北京国电龙源环保工程有限公司,北京100039

出　　处：《环境科技》2012年第5期43-48,共6页Environmental Science and Technology

基　　金：国家"863"基金项目(2010AA065002;2010AA065003;2012AA06A113);江苏省科技成果转化专项资金项目(BA2010036);北京市科技计划专项资金项目资助课题

摘　　要：介绍了火电机组烟气以及其他固定源排气中SO3和硫酸雾滴的形成机理,对电厂下游设备的腐蚀和运行影响。结合影响SO3和硫酸雾滴准确测定的影响因素和难以准确检测的主要原因,详细论述了目前较广泛采用的检测方法-异丙醇溶液吸收-沉淀滴定法和控制冷凝法的检测原理、操作要点、主要难点和适用条件。同时,简要介绍了其他几种检测方法-碘量法、腐蚀探针法和在线检测方法等的检测原理。This article discussed the formation mechanism of SO3 and sulfuric acid droplet in the flue gas of thermal power units and other stationary source exhaust, and the impact of SO3 and sulfuric acid droplet on the corrosion and its operation of downstream equipment of power plant. Combined the impact factor of the accurate determination of SO3 and sulfuric acid droplets with the main reason of difficult to accurately detection, this article discussed the detection principle, the operation points, the main difficulty and the applicable conditions of detection methods now widely used in detail, such as isopropyl alcohol solution absorption-precipitation titration, and control condensation method. Meanwhile, this article provided a brief introduction to several other detection methods, such as iodometric method, corrosion probe method and on-line detection methods.

关 键 词：三氧化硫和硫酸雾滴 异丙醇溶液吸收-沉淀滴定法 控制冷凝法 碘量法 腐蚀探针法 

分 类 号：X8[环境科学与工程—环境工程]