The Laser Detection of Ammonia Escape in Thermal Power Plants

摘要

In the thermal power generation,more and more continuous online monitoring technologies are used to monitor NH3,NO,NO2,CO,CO2,O2,etc accurately and realtime.And these technologies are closely related to fossil fuel combustion gases.Particularly the technology based on tunable diode laser absorption spectroscopy (TDLAS) technology are widely used in many spectral fossil fuel burning power plants or other industrial areas.Continuous emission monitoring systems have been used to monitor gas concentrations.By laser detection technology,we can detect the escape of ammonia concentration to get the catalytic effect.In this way the NOX emission can be limited and the boiler heating surface can be protected,and it will meet the requirements of thermal power plant air emissions at the same time.