Influence of coke rate on thermal treatment of waste selective catalytic reduction(SCR)catalyst during iron ore sintering
Influence of coke rate on thermal treatment of waste selective catalytic reduction（SCR） catalyst during iron ore sintering作者机构：State Key Laboratory of Clean Energy UtilizationInstitute for Thermal Power EngineeringZhejiang UniversityHangzhou 310027China
出 版 物：《Chinese Journal of Chemical Engineering》 (中国化学工程学报（英文版）)
年 卷 期：2022年第35卷第2期
页 面：415-423页
核心收录：
学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学]
基 金：supported by the National Natural Science Foundation of China(52036008)
主 题：Flame front Waste selective catalytic reduction(SCR) catalyst Thermal treatment Iron ore sintering
摘 要：Waste selective catalytic reduction(SCR)catalyst as a hazardous waste has a significant impact on the environment and human *** present study,a novel technology for thermal treatment of waste SCR catalyst was proposed by adding it to sinter mix for iron ore *** influences of coke rate on the flame front propagation,sinter microstructure,and sinter quality during sintering co-processing the waste SCR catalyst process were *** situ tests results indicated the maximum sintering bed temperature increased at higher coke rate,indicating more liquid phase generated and higher airflow *** sintering time was longer and the calculated flame front speed dropped at higher coke *** microstructure results found the coalescence and reshaping of bubbles were more fully with increasing coke *** porosity dropped from 35.28%to 25.66%,the pore average diameter of large pores decreased from 383.76μm to 311.43μ*** increasing coke rate,the sinter indexes of tumbler index,productivity,and yield,increased from 33.2%,9.2 t·m^(-2)·d^(-1),28.9%to 58.0%,36.0 t·m^(-2)·d^(-1),68.9%,***,a comprehensive index was introduced to systematically assess the influence of coke rate on sinter quality,which rose from 100 to 200 when coke rate was increased from 3.5%(mass)to 5.5%(mass).
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