A pilot-scale study of selective desulfurization via urea addition in iron ore sintering

作     者：Hong-ming Long Xue-jian Wu Tie-jun Chun Zhan-xia Di Ping Wang Qing-min Meng 

作者机构：School of Metallurgical EngineeringAnhui University of Technology 

出 版 物：《International Journal of Minerals,Metallurgy and Materials》 (矿物冶金与材料学报（英文版）)

年 卷 期：2016年第23卷第11期

页      面：1239-1243页

核心收录：

学科分类：0202[经济学-应用经济学] 02[经济学] 020205[经济学-产业经济学] 08[工学] 0806[工学-冶金工程] 080601[工学-冶金物理化学] 

基　　金：financially supported by the National Natural Science Foundation of China (Nos.U1260101 and 51504003) the Project of Science and Technology Development of Anhui Province,China (No.1501041126) 

主　　题：iron ore sintering urea flue gas desulphurization 

摘      要：The iron ore sintering process is the main source of SO_2 emissions in the iron and steel industry. In our previous research, we proposed a novel technology for reducing SO_2 emissions in the flue gas in the iron ore sintering process by adding urea at a given distance from the sintering grate bar. In this paper, a pilot-scale experiment was carried out in a commercial sintering plant. The results showed that, compared to the SO_2 concentration in flue gas without urea addition, the SO_2 concentration decreased substantially from 694.2 to 108.0 mg/m^3 when 0.10wt% urea was added. NH_3 decomposed by urea reacted with SO_2 to produce（NH_4）_2SO_4, decreasing the SO_2 concentration in the flue gas.