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。
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.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2006年第z2期191-194,共4页
Journal of Engineering Thermophysics
基金
浙江省科技项目资助(NO.2004C33064)
关键词
二(噁)英
水分
从头合成
垃圾焚烧
飞灰
polychlorinated dibenzo-p-dioxin
polychlorinated dibenzofuran
de novo formation
msw incineration
fly ash
