采用离子色谱法检测电除尘飞灰中的氨含量Application of Ion-Chromatography Method in Detecting Ammonia Content in Electrostatic Precipitator Fly Ash
周飞梅,曹志勇,汤治,郑志明,汪景婷
ZHOU Feimei,CAO Zhiyong,TANG Zhi,ZHENG Zhiming,WANG Jingting
摘要(Abstract):
根据离子色谱法检测电除尘飞灰中氨含量的原理,进行检测条件优化试验,得出影响飞灰中氨含量的主要因素有溶液pH值、搅拌时间、水灰比等。在得出最佳试验条件后,进行重复性测试和加标回收率测试,结果表明离子色谱法测定飞灰中氨含量的方法具有较高的精密度和准确度,可作为监测脱硝系统氨逃逸的一种手段。
By applying the principle of ion-chromatography method for testing ammonia content in electrostatic precipitator fly ash, tests to optimize detecting conditions is carried on. It is concluded that the main factors influencing ammonia content in fly ash are pH of solution, mixing time, water and ash ratio and so forth. After optimal test condition is obtained, repeatability test and adding standard recovery rate test are conducted.The results show that ion-chromatography method is of high precision and accuracy in testing ammonia content in electrostatic precipitator fly ash and it can be used to monitor ammonia escape in desulfurization system.
关键词(KeyWords):
离子色谱法;飞灰;氨逃逸量;脱硝系统
ion-chromatography method;fly ash;ammonia escape amount;desulfurization system
基金项目(Foundation):
作者(Author):
周飞梅,曹志勇,汤治,郑志明,汪景婷
ZHOU Feimei,CAO Zhiyong,TANG Zhi,ZHENG Zhiming,WANG Jingting
DOI: 10.19585/j.zjdl.2014.06.012
参考文献(References):
- [1]梁川,沈越.1 000 MW机组SCR烟气脱硝系统优化运行[J].中国电力,2012,45(1):41-44.
- [2]杨青山,谭建坤.火电厂脱硝性能试验分析[J].华电技术,2012,34(10):9-10.
- [3]路广善,李永亮,李健.锅炉烟气脱硝技术的发展与应用[J].北方环境,2012,27(5):188-189.
- [4]HJ 563-2010火电厂烟气脱硝工程技术规范-选择性催化还原法[S].北京:中国环境科学出版社,2010.
- [5]陈彪,李辉,金东春,等.1 000 MW燃煤机组SCR烟气脱硝系统优化调整试验[J].电站系统工程,2012,28(5):30-32.
- [6]钟礼金,宋玉宝.锅炉SCR烟气脱硝空气预热器堵塞原因及其解决措施[J].热力发电,2012,41(8):45-47.
- [7]朱卫东.火电厂烟气脱硫脱硝监测分析及氨逃逸量检测[J].分析仪器,2010(1):88-94.
- [8]QUEROL X.,UMANA J C.,ALASTUEY A,et al.Extraction of soluble major trace elements from fly ash in open and closed leaching systems[J].2001,80:801-813.
- [9]GB/T 12496.12-1999木质活性炭试验方法苯酚吸附值的测定[S].北京:中国标准出版社,1999.
- [10]何吕刚,吴玉华.锅炉电除尘器飞灰粒径分布特性试验研究[J].电力环境保护,1999,15(4):4-7.