| 钢铁行业不同物料的二英生成分布及机理探讨 |
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| 引用本文： | 徐帅玺,林晓青,陈彤,李晓东,岑可法.钢铁行业不同物料的二英生成分布及机理探讨[J].环境科学学报,2018,38(7):2818-2824. |
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| 作者姓名： | 徐帅玺 林晓青 陈彤 李晓东 岑可法 |
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| 作者单位： | 能源清洁利用国家重点实验室浙江大学热能工程研究所 |
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| 基金项目： | 国家自然科学基金（No.51706201）；国家重点研发计划项目（No.2017YFC0703100） |
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| 摘 要： | 钢铁行业是我国二噁英的第一大排放源,但对不同钢铁生产过程二英的生成排放认识有所欠缺.本文系统探究了钢铁行业不同物料的二噁英生成能力和同系物分布特征.结果表明,烧结飞灰的二英生成能力最强,而烧结生料生成二噁英能力最弱.3种污泥(连铸、热轧、冷轧)和烧结生料的二英生成途径相似,4种飞灰(电炉、转炉、高炉一次、高炉二次)之间也有相似的二英生成途径,而烧结飞灰则与其他物料均不同.所有物料中,有毒2,3,7,8-PCDD同系物之间存在极强的相关性,且氯酚合成二噁英路径也被发现存在于钢铁生产过程中.
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| 关 键 词： | 钢铁行业 污泥 飞灰 二英生成 |
| 收稿时间： | 2017/11/29 0:00:00 |
| 修稿时间： | 2017/12/30 0:00:00 |
PCDD/F formation and distribution of various materials from steel industry |
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| XU Shuaixi,LIN Xiaoqing,CHEN Tong,LI Xiaodong and CEN Kefa.PCDD/F formation and distribution of various materials from steel industry[J].Acta Scientiae Circumstantiae,2018,38(7):2818-2824. |
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| Authors: | XU Shuaixi LIN Xiaoqing CHEN Tong LI Xiaodong and CEN Kefa |
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| Institution: | State Key Laboratory of Clean Energy Utilization, Institute for Thermal Power Engineering, Zhejiang University, Hangzhou 310027,State Key Laboratory of Clean Energy Utilization, Institute for Thermal Power Engineering, Zhejiang University, Hangzhou 310027,State Key Laboratory of Clean Energy Utilization, Institute for Thermal Power Engineering, Zhejiang University, Hangzhou 310027,State Key Laboratory of Clean Energy Utilization, Institute for Thermal Power Engineering, Zhejiang University, Hangzhou 310027 and State Key Laboratory of Clean Energy Utilization, Institute for Thermal Power Engineering, Zhejiang University, Hangzhou 310027 |
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| Abstract: | In China, integrated iron and steel industry is the main source of polychlorinated dibenzo-p-dioxins (PCDD) and dibenzofurans (PCDF) or, more briefly, of dioxins. However, studies about the PCDD/F formation on the whole process of steel making are rather less abundant. The aim with this study is to experimentally investigate the PCDD/F formation and distribution of various materials from steel industry. The experiments results show that sintering fly ash generates the most PCDD/F, and PCDD/F-yield of sintering raw material is the least. Three kinds of sludge (continues casting, cold rolling and hot rolling) and sintering raw material lead to a similar pathway for PCDD/F formation. Four fly ash (blast furnace 1&2, basic oxygen furnace and electric arc furnace) also presents the similar PCDD/F distribution, which is totally different from that of sintering fly ash. In this study, a fairly good internal correlation among 2,3,7,8-substituted PCDD is observed. In addition, chlorophenol routes for PCDD/F formation in thermal metallurgical processes is also investigated. |
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| Keywords: | steel industry steel rolling sludge fly ash PCDD/F formation |
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