中国钢铁行业重点工序烟气超低排放技术进展

doi:10.13228/j.boyuan.issn0449749x.20190061

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Abstract The iron and steel industry has been the key field of the air pollution control in China， and the ultralow emission standard for the sintering and pelletizing of iron and steel industry has been proposed. The purification technologies for multiple processes such as sintering (pellet)，coking，blast furnace，and converter were summarized. The multipollutants ultralow emission technologies are based on the source reduction，process control，and endofpipe treatment，including the flue gas circulating，semidry desulfuration with medium and low temperature SCR denitration，activated carbon method，ozone oxidation with SO2 and NOx synergistic absorption，optimization of raw material structure of blast furnace for source reduction of SO2 and NOx，precharging bagtype dust collecting technology for the second flue gas of the converter. The above technologies have been applied in the iron and steel plants in China. Eventually，the advices such as greenization of production technology，rationalization of the pollutant measurement，strengthening the unconventional pollutants control，attaching greater importance to carbon emissions from the iron and steel industry are proposed.

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iron and steel industry air pollution whole process ultra-low emission

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	YU Yong
	ZHU Ting-yu
	LIU Xiao-long

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YU Yong,ZHU Ting-yu,LIU Xiao-long. Progress of ultra-low emission technology for key processes of iron and steel industry in China[J]. Iron and Steel, 2019, 54(9): 1-11.

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http://www.chinamet.cn/Jweb_gt/EN/10.13228/j.boyuan.issn0449749x.20190061 OR http://www.chinamet.cn/Jweb_gt/EN/Y2019/V54/I9/1