氨法脱硫烟气在线连续监测系统采样净化预处理装置改造

介绍氨法脱硫烟气在线连续监测系统的配置及其构成，分析了存在的问题。2011年7月，对第2期烟气在线连续监测系统采样与预处理装置进行了改造，改造后采样管路无结晶、不堵塞；2012年4月，对第1期烟气在线连续监测系统采样和预处理装置也进行了相应的改造，以防止采样管线因出现铵盐结晶而堵塞，确保检测精度，保证了烟气在线连续监测系统的长周期正常运行。

Reform of Sampling Purification and Pretreatment Unit of Continuous Emission Monitoring System for Ammonia Process Desulfurization of Flue Gas

A presentation is given of the layout and formation of continuous emission monitoring system for ammonia process desulfurization of flue gas, and an analysis made of the existing problems. In July 2011 a reform was carried out of the sampling and pretreatment unit of the second-phase flue gas continuous emission monitoring system, and after the reform there were no crystals and plugging in the sampling pipelines. In April 2012 relevant reform was made of the sampling and pretreatment unit of the first-phase flue gas continuous emission monitoring system, so as to prevent the sampling pipelines from ammonium salt crystallization and plugging, ensure the precision of detection, and guarantee the long-term normal operation of the flue gas continuous emission monitoring system.