一种折算脱硝氨逃逸浓度方法的研究  

Research on a Conversion Method for Denitrification Ammonia Escape Concentration

作　　者：康玺[1] 路璐[1] 钟智坤[1] 吴华成[1] 丁立萍[1] 

机构地区：[1]国网冀北电力有限公司电力科学研究院(华北电力科学研究院有限责任公司),北京100045

出　　处：《华北电力技术》2015年第8期28-32,共5页North China Electric Power

摘　　要：脱硝氨逃逸浓度为一项重要的脱硝系统性能考核指标。依据DL/T 260—2012燃煤电厂烟气脱硝装置性能验收试验规范附录B中烟气氨逃逸浓度测试分析方法,对脱硝后烟气中氨逃逸浓度进行采样分析,同时收集空气预热器入口飞灰样品和电除尘器一电场飞灰样品进行灰中氨含量分析,通过研究飞灰中氨含量浓度与烟气氨逃逸浓度之间的相关性,总结出一种通过测试燃煤电厂飞灰样品氨含量来估算烟气氨逃逸浓度的新方法,为企业监测脱硝系统氨逃逸浓度提供一种新手段。Ammonia escape was an important performance evaluation index of denitrification. Firstly,the ammonia in the flue gas after selective catalytic reduction （SCR） DeNOx reactors was sampled, and the contents were determined according to the referred method of DL/T 260--2012： Performance Checkup Test Code for Flue Gas Denitration Equipment of Coal - fired Power Plants - Appendix B. Meanwhile, the ash samples from air heater（AH） and electro- static precipitator（ESP） were collected,in which the ammonia concentrations were also measured. In this paper, by analyzing the correlation between the ammonia content in the fly ash and the concentration of ammonia escape in flue gas,we conclude a new method to estimate the ammonia escape in the flue gas by testing the ammonia content of the fly ash samples from the coal-fired power plants,which provides a new way to monitor the concentration of ammonia escape in SCR system.

关 键 词：火电厂 飞灰 脱硝 氨逃逸 高性能氨气敏电极 

分 类 号：TM621.8[电气工程—电力系统及自动化]