A pilot-scale study of selective desulfurization via urea addition in iron ore sintering
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- 作者：Hong-ming Long ; Xue-jian Wu ; Tie-jun Chun…
- 关键词：iron ore sintering ; urea ; flue gas ; desulphurization
- 刊名：International Journal of Minerals, Metallurgy, and Materials
- 出版年：2016
- 出版时间：November 2016
- 年：2016
- 卷：23
- 期：11
- 页码：1239-1243
- 全文大小：1,349 KB
- 刊物类别：Chemistry and Materials Science
- 刊物主题：Materials Science
Metallic Materials
Mineral Resources - 出版者：Journal Publishing Center of University of Science and Technology Beijing, in co-publication with Sp
- ISSN：1869-103X
- 卷排序：23
文摘
The iron ore sintering process is the main source of SO2 emissions in the iron and steel industry. In our previous research, we proposed a novel technology for reducing SO2 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 SO2 concentration in flue gas without urea addition, the SO2 concentration decreased substantially from 694.2 to 108.0 mg/m3 when 0.10wt% urea was added. NH3 decomposed by urea reacted with SO2 to produce (NH4)2SO4, decreasing the SO2 concentration in the flue gas.