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| Desulfurization and denitration of sintering flue gas based on ammonia and activated carbon process |
| RUAN Zhi-yong |
| （Technological Center， Guangxi Liuzhou Iron and Steel Group Co.， Ltd.， Liuzhou 545002， Guangxi， China） |
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Abstract In order to reduce the emission of SO2 and[NOx]in the iron ore sintering， the desulfurization and denitration of iron ore sintering flue gas based on ammonia-activated carbon process was developed. The results show that more than 70% denitration rate was obtained using activated carbon after SO2 was removed by ammonia process. The denitration mechanism is that the escaping NH3 reacted with C-OH in the surface of activated carbon to produce the N2 and H2O. For the sintering plants using ammonia desulfurization process， more than 99% desulfurization rate and 70% denitration rate were achieved just connecting a single stage activated carbon adsorption tower after the desulfurization spray tower， which could reduce the capital cost and also solve the secondary environmental pollution due to the NH3 escape.
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Received: 13 June 2017
Published: 21 December 2017
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| [1] |
ZHANG Wei-li, WU Sheng-li, HU Zhong-jie. Analysis of affecting factors of activated coke denitrationefficiency for sintering flue gas[J]. Iron and Steel, 2020, 55(5): 109-115. |
| [2] |
ZHANG Wei-li1,WU Sheng-li1,HU Zhong-jie1,2. Statistical analysis of factors affecting desulfurization rate of activated coke for sintering flue gas[J]. JOURNAL OF IRON AND STEEL RESEARCH , 2020, 32(4): 281-288. |
| [3] |
WU Sheng-li, QUE Zhi-gang, AI Xian-bin. Research process on regulating reaction behaviors of calcium-containing compounds for reducing NOx emission in sintering process[J]. Iron and Steel, 2020, 55(3): 1-8. |
| [4] |
CHEN Xu-ling, ZHENG Ru-yue, FAN Xiao-hui, GAN Min, HUANG Xiao-xian, JI Zhi-yun. Numerical simulation model of temperature and NOx emission in flue gas circulating sintering process[J]. Iron and Steel, 2020, 55(2): 23-30. |
| [5] |
JIANG Da-jun. Influence of fuel structure on sintering character and comprehensive effect[J]. Iron and Steel, 2020, 55(2): 31-41. |
| [6] |
ZHOU Mao-jun, ZHANG Dai-hua. Technology integration and practice of ultra-low emission of sintering flue gas in Baosteel[J]. Iron and Steel, 2020, 55(2): 144-151. |
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2017, Vol. 52 
