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Process control technology of low NO_x sintering based on coke pretreatment 被引量:3
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作者 WANG Zhao-cai ZHOU Zhi-an +2 位作者 GAN Min FAN Xiao-hui HE Guo-qiang 《Journal of Central South University》 SCIE EI CAS CSCD 2020年第2期469-477,共9页
Process control is an effective approach to reduce the NOx emission from sintering flue gas.The effects of different materials adhered on coke breeze on NOx emission characteristics and sintering performance were stud... Process control is an effective approach to reduce the NOx emission from sintering flue gas.The effects of different materials adhered on coke breeze on NOx emission characteristics and sintering performance were studied.Results showed that the coke breeze adhered with the mixture of CaO and Fe2O3 or calcium ferrite significantly lowers the NOx emission concentration and conversion ratio of fuel-N to NOx.Pretreating the coke with the mixture of lime slurry and iron ore fines helped to improve the granulation effect,and optimize the carbon distribution in granules.When the mass ratio of coke breeze,quick lime,water and iron ore fines was 2:1:1:1,the average NOx emission concentration was decreased from 220 mg/m3 to 166 mg/m3,and the conversion ratio of fuel-N was reduced from 54.2%to 40.9%. 展开更多
关键词 iron ore sintering nitrogen oxide process control coke breeze pretreatment
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