Pilot-scale investigation of selective catalytic reduction (SCR) for cement k0iln

2018 4th International Conference on Environmental Science and Material Application

生态环境科学;材料科学

Wei, Yanfei^1^2 ; Zhou, Minjie^3 ; Xu, Minghai^3 ; Zhou, Rong^3 ; Gao, Xiang^1

College of Energy Engineering, Zhejiang University, Hangzhou, China^1

Zhejiang Environment Technology Co., Ltd., Hangzhou, China^2

Environmental Science Research and Design Institute of Zhejiang Province, Hangzhou, China^3

关键词: Ammonia emissions;    Catalyst volume;    DENOX technologies;    NOx removal efficiency;    Operating hours;    Real applications;    SCR systems;    Selective catalytic reduction of NOx;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/252/4/042069/pdf
DOI  :  10.1088/1755-1315/252/4/042069

来源: IOP

【 摘 要 】

Selective catalytic reduction (SCR) of NOX is among the leading edge of the emerging hotspot of deNOx technologies. However, most of the reported investigations were bench-scale study, which were limited to represent the performance of catalysts at real applications. With the successful construction of pilot scale (10000 Nm3/h) SCR system at a cement kiln, we systematically investigated the effect of NH3/NOx molar ratio, catalyst volume and system stability on NOx removal efficiency. It is found that when the inlet NOx concentration was at the range of 200 to 300 mg/m3, the corresponding outlet NOx concentration was below 50 mg/m3 during 168 operating hours with ammonia emission below 0.98 mg/m3 at NSR of 0.89-1.0.