脱硝氨逃逸浓度监测技术分析

Analysis on Denitration Ammonia Escape Monitoring Technology

目前国内外用于烟气脱硝系统氨逃逸监测的方法主要包括在线仪器分析法和离线手工分析法两大类。本文在查阅大量氨逃逸监测技术相关资料的基础上,重点针对原位式激光分析法、稀释取样法、抽取式激光分析法等在线氨逃逸监测技术从工作原理、优缺点等方面进行综合论述;对靛酚蓝分光光度法、离子选择电极法、纳氏试剂分光光度法、容量法、离子色谱法等烟气采样离线分析法的分析原理、分析精度等方面进行简要论述。为电力企业了解脱硝氨逃逸监测原理、设备选取、结果分析等方面提供理论基础。

There are two types of ammonia escaping monitoring technologies as online instrument analysis and sampiing and off-line analysis of gas. In this paper, specific method of the two types were aggregated and compared. The laser in situ analysis,dilution sampling method and removable laser analysis belong to online analysis type,while the off-line analysis type includes indophenol blue spectrophotometry method, ion selective electrode method, Nessler＇ s reagent spectrophotometric method,and volumetric method and ion chromatography method. Theories and application features of these methods were discussed, aimed to provide the theory basis for power enterprise to understand and apply about ammonia escaping monitoring technologies