Denitrification Direct Injection System Mixer Modification
Datang International Power Generation Co.,Ltd.actively responds to the national call for strict control of flue gas emissions.The denitrification pyrolysis furnace system has been put into operation for many years,and it is found that the denitrification pyrolysis furnace system is susceptible to operation,temperature and other influences in operation,resulting in crystallisation of the pyrolysis furnace,which seriously affects the load of the unit.The denitrification system was modified and a denitrification direct injection system was installed,but design flaws were gradually revealed during operation,and the optimisation of the denitrification direct injection system should not be delayed.Based on this,the targeted transformation,using the mixer to add bypass transformation programme.Practical application shows that,after the transformation,when replacing the mixer,switching the urea solution flow through the pipeline,without stopping the system,not only to facilitate daily maintenance,but also to ensure stable operation of the unit.At the same time,it can reduce the maintenance cost,reduce the workload of maintenance personnel and improve the maintenance efficiency.
denitrification direct injection systemureamixerbypasspreventive measures
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