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《Iron & Steel》 2017-12
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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.;  
In order to reduce the emission of SO_2 and NO_x 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 SO_2 was removed by ammonia process. The denitration mechanism is that the escaping NH_3 reacted with C-OH in the surface of activated carbon to produce the N_2 and H_2O. 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 NH_3 escape.
【Fund】: 柳州市环境保护专项基金资助项目(LZHB2011-01)
【CateGory Index】: X757
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