Optimization Research and Practice of Precise Ammonia Injection Control in Denitrification System of Thermal Power Plant
The operating conditions of thermal power generation units are complex and varied,and the NOx content in the flue gas at the inlet of selective catalytic reduction(SCR)equipment fluctuates greatly.The measurement of continuous emission monitoring system(CEMS)for flue gas also has serious lag,and the amount of ammonia injection during denitrification is difficult to control.When the ammonia injection amount is too low,the NOx emissions exceed the standard.When the ammonia injection amount is too high,it not only affects the denitrification efficiency,but also corrodes the equipment and affects the normal operation of the boiler.Therefore,it is necessary to establish a precise and effective inlet NOx emission prediction model to control the amount of ammonia injection,improve the control quality of SCR flue gas denitrification system,and reduce the denitrification cost of power plants.
thermal power plantammonia injectiondenitrification systemSCR equipment
万方数据
维普
