Review on technologies of reducing dioxin in flue gas from sintering process
Review on technologies of reducing dioxin in flue gas from sintering process
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发表时间：
2011
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通讯作者：
He Xiaolei
中科院分区：
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作者：
He Xiaolei
二恶英作为毒性最强的永久性有机污染物之一，因其对环境的污染而受到全世界的特别关注。二恶英主要是在炼钢过程中的烧结过程中产生的。根据烧结过程中二恶英产生的机理和烟气排放的特点，分别从烧结过程的源管理、过程控制和烟气处理三个方面对现有的二恶英控制技术进行了探讨和分析。鉴于烟气排放量大、化学成分复杂，建议采用工艺初期氯源控制、工艺过程中烟气循环、工艺后期烟气处理等综合节能减排措施，而不能只采用技术控制二恶英。
As one of the most toxic and permanent organic pollutants,the dioxin has been a particular concern by the whole world due to its environment pollution.Dioxin is mostly produced during the sintering in the iron and steel making processes.Based on the mechanism of dioxin generation and characteristic of flue gas emission during sintering,the article discusses and analyzes separately the existing technique of dioxin control in three aspects of source management,process control and flue gas treatment of sintering process.And the article suggests,in consideration of the huge amount of flue gas emission and complicated chemical composition,that the comprehensive measures for energy-saving and emission reduction should be also adopted to control the chloride source at the beginning of process,circulate the flue gas during process,and treat the flue gas at the end of process,instead of using the technique to control dioxin only.