摘要
用焚烧炉进行城市垃圾焚烧处理后余下的粉尘中含有严重危及人类身体健康 ,甚至生命安全的二英。该文利用表面脉冲放电研究了静电除尘器中粉尘的表面化学转化 ,结果发现放电后的粉尘颗粒表面产生物理性脆性变化。这表明脉冲放电引起粉尘及其颗粒的有效脆性化。含量分析结果也表明放电后试品中对人体有害的二英含量明显降低。正脉冲放电比负脉冲放电对粉尘中的二英有更明显的转化作用。可以认为 ,利用脉冲放电 ,特别是正脉冲放电 ,非热平衡等离子体能有效地解除和转换粉尘中有害化学物质。
The powder from city rubbish burning consists of dioxine which is dangerous to human's health and even life. In this paper, fly ash from electrostatic precipitators was detoxified using surface pulse discharges. Powder from the shattered particles was visible after discharging indicating that the pulse discharge effectively caused mechanical fracturing of the fly ash particles. Composition analysis shows that the discharge reduces the amounts of toxic substances and dioxines in the samples. A positive pulse discharge provides more effective detoxication than a negative discharge. The surface pulse discharge, especially the positive pulse discharge, produces a non -thermal plasma which effectively detoxified the dioxine in the fly ash.
出处
《清华大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2002年第9期1161-1164,共4页
Journal of Tsinghua University(Science and Technology)
