Application of Novel SNCR Flue Gas Denitrification Technology in 300MW CFB Boiler

A novel SNCR flue gas denitrification technology which applied to 300 MW CFB boiler was designed. The technology principle of the denitration system, main design parameters, process and major component of system was introduced, and performance tests for the system was doing. The criterion of system design is that system denitration efficiency is more than 50%, NOx emission concentration in flue gas is less than 200mg/Nm3 and concentration of ammonia escape is no higher than 8mg/Nm3. The performance tests shows that: With 75% load and 100% load of unit,the average denitration efficiency of system are 52.73% and 52.73% respectively, the average NOx emission concentration are 86.6mg/Nm3 and 54.1mg/Nm3 respectively after the system running, the average ammonia escape concentration are 3.03mg/Nm3 and 2.96mg/Nm3 respectively.