The practical application of SNCR precise denitrification technology in cement production
After the energy-saving and carbon reduction renovation of LHK Company this year,the production of clinker has increased,and the concentration of NOx emissions has increased.However,the original denitrification system has been used for a long time,the equipment is aging,the spray gun positions are few,and the coverage is small.When the NO,environmental emission index reaches be-low 100 mg/m3,the amount of ammonia water per ton of clinker is about 3.1 kg/t.After the SNCR precise denitrification renovation,the ammonia water spray gun positions are arranged in multiple layers and points,Accurately measuring the ammonia flow rate and com-pressed air volume of each spray gun,dynamically adjusting the atomization effect of the spray gun,controlling the chimney NO,emis-sion(under standard conditions)to be less than 100 mg/m3,reducing the ammonia consumption per ton of clinker to 2.14 kg/t,and sav-ing 30.96％of ammonia consumption.
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