采用温度滴定法检测脱硫浆液中硫酸根含量  

Determination of sulfate ion in FGD equipments from fossil fuel power plants by thermometric titration

作　　者：孙焕 汪寒 龚雁 宋晓红 

机构地区：[1]瑞士万通中国有限公司,北京100192 [2]河北省电力科学研究院,河北石家庄050021

出　　处：《热力发电》2015年第4期116-119,共4页Thermal Power Generation

摘　　要：采用温度滴定法对火电厂脱硫浆液中的硫酸根进行了定量分析。与传统方法相比,温度滴定法测定硫酸根操作简单、快速、准确度高,适合大批量样品的连续分析。对硫酸根含量在50-175mmol/L样品的测试结果表明,测试结果的相对标准偏差在0.3%-1.1%之间,加标回收率在97.1%-99.5%之间,能够满足脱硫系统分析测试的要求。By thermometric titration method, sulfate ion in FGD equipment of a fossil fuel power plant was determined. Compared with the conventional method, this new method is easy to follow, and has fast speed and high accuracy,which is suitable for continuous analysis of large scale samples. Detection for samples with sulfate iron concentration ranging from 50 mmol/L to 175 mmol/L shows that, the relative standard difference （RSD） of the results is between 0.3% and 1.1% ,and the recovery rate is between 97.1% and 99.5%,indicating this method can meet the requirements of analysis in desulfurization system.

关 键 词：温度滴定 硫酸根 温度传感器 放热反应 等当点 脱硫浆液 火电厂 

分 类 号：X832[环境科学与工程—环境工程]