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	垃圾焚烧中氯化物对重金属Pb迁移转化特性的影响
	陈勇 ; 张衍国 ; 李清海 ; 陈昌和 ; CHEN Yong ; ZHANG Yan-guo ; LI Qing-hai ; CHEN Chang-he
	2010-05-13 ; 2010-05-13
关键词	垃圾焚烧 重金属 氯化物 迁移分布 物相形成 MSW incineration heavy metal chloride partitioning speciation X705
其他题名	Effects of chlorides on Pb partitioning and speciation in a simulated MSW incinerator
中文摘要	采用管式炉和模拟垃圾对垃圾中氯化物对重金属Pb迁移转化特性的影响进行了研究,使用ICP-AES(美国EPA消解方法)、SEM、EDS和XRD等对重金属浓度、灰渣表面形貌、成分和灰渣X射线衍射物相等进行了分析。结果表明,氯化物含量的增加使得Pb生成更多易挥发性物质,从而向飞灰迁移分布,但有机氯PVC的影响比无机氯N aC l的大。无机氯N aC l和有机氯PVC对焚烧中Pb迁移转化作用机理不同,N aC l易与Pb反应生成PbC l2,而PVC与Pb反应除了生成PbC l2外,还生成了Pb(C lO4)2、PbC l2O4和PbO2。同时焚烧温度和停留时间也是焚烧中Pb迁移分布的两个主要影响因素。; The effects of chlorides(including inorganic chloride NaCl and organic chloride PVC) on Pb emission during MSW incineration were investigated using a tubular furnace and a simulated MSW containing heavy metals.The concentrations of heavy metals were measured by ICP-AES after digesting of samples including bottom ash,fly ash and flue gas according to related US EPA methods.Heavy metal species in bottom ash and fly ash were identified by X-ray diffraction technique.The spectra of elements distributed and micrographs of bottom ash and fly ash were detected by energy dispersive X-ray system and scanning electron microscope,respectively.The results indicate that the emission of Pb tends to be enhanced with the increasing of chloride content,so partitioned in fly ash.The effect mechanism of inorganic chloride NaCl and inorganic chloride PVC on Pb emission is different.NaCl tends to form PbCl2 with Pb.For PVC,besides the resultant PbCl2,PVC tends to form Pb(ClO4)2,PbCl2O4 and PbO2 with Pb.Incineration temperature and residence time are two major factors influencing the partitioning of Pb.
语种	中文 ; 中文
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/31578]
专题	清华大学
推荐引用方式 GB/T 7714	陈勇,张衍国,李清海,等. 垃圾焚烧中氯化物对重金属Pb迁移转化特性的影响[J],2010, 2010.
APA	陈勇.,张衍国.,李清海.,陈昌和.,CHEN Yong.,...&CHEN Chang-he.(2010).垃圾焚烧中氯化物对重金属Pb迁移转化特性的影响..
MLA	陈勇,et al."垃圾焚烧中氯化物对重金属Pb迁移转化特性的影响".(2010).

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