| 水对垃圾焚烧飞灰二(噁)英从头合成的影响 |
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| 引用本文： | 章骥,李晓东,严建华,陈彤,陆胜勇,岑可法.水对垃圾焚烧飞灰二(噁)英从头合成的影响[J].工程热物理学报,2006,27(Z2). |
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| 作者姓名： | 章骥 李晓东 严建华 陈彤 陆胜勇 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,浙江,杭州,310027 |
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| 摘 要： | 采用垃圾焚烧飞灰在小型管式炉上进行了二(口恶)英的从头合成试验,通过控制水分在气流中的比例,研究不同的水分对二(口恶)英的总量,毒性当量以及分布特性的影响。结果表明,水分整体上对二(口恶)英从头合成具有促进作用,并提高了二(口恶)英排放的毒性当量,但没有发现对分布特性有明显的影响。可能的反应途径水分通过活化飞灰的活性位置,从而促进了二(口恶)英的生成。在氮气反应气氛中的试验表明,水分可以为二(口恶)英的生成提供氧。
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| 关 键 词： | 二(噁)英 水分 从头合成 垃圾焚烧 飞灰 |
EXPERIMENTAL STUDY ON THE ROLE OF MOISTURE IN DE NOVO FORMATION OF PCDD AND PCDF |
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| ZHANG Ji,LI Xiao-Dong,YAN Jian-Hua,CHEN Tong,LU Sheng-Yong,CEN Ke-Fa.EXPERIMENTAL STUDY ON THE ROLE OF MOISTURE IN DE NOVO FORMATION OF PCDD AND PCDF[J].Journal of Engineering Thermophysics,2006,27(Z2). |
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| Authors: | ZHANG Ji LI Xiao-Dong YAN Jian-Hua CHEN Tong LU Sheng-Yong CEN Ke-Fa |
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| Abstract: | The influence of moisture on the formation of polychlorinated dibenzo-p-dioxins (PCDD) and polychlorinated dibenzofurans (PCDF) was investigated with fly ash from a municipal solid waste incinerator in a fixed bed incinerator in different atmosphere. The total quantity, toxic value and homologue patterns of PCDD/PCDF were examined. The results indicated that the moisture played a positive role in facilitating de novo formation, thus enhanced the total I-TEQ. However, no influence of moisture on the pattern was observed. The potential pathway is that moisture activates the fly ash which can promote the PCDD/PCDF without changing the homologue pattern. The results in nitrogen atmosphere revealed that moisture can provide oxygen for the formation when there is no additional oxygen source. |
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| Keywords: | polychlorinated dibenzo-p-dioxin polychlorinated dibenzofuran de novo formation msw incineration fly ash |
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