DC Arc Plasma Furnace Melting of Waste Incinerator Fly Ash  

作　　者：陈明周 孟月东 施嘉标 匡静安 倪国华 刘卫 江贻满 

机构地区：[1]Institute of Plasma Physics,Chinese Academy of Sciences

出　　处：《Plasma Science and Technology》2009年第1期62-65,共4页等离子体科学和技术（英文版）

基　　金：supported by the Knowledge Innovation Project in the Chinese Academy of Sciences(O45CF3A211)

摘　　要：Municipal solid waste incinerator （MSWI） fly ash was melted using a set of direct current （DC） arc plasma furnace system for the first time in China. At a feed-rate of flying ash of 80 kg/h, the temperature at the gas outlet was above 1300℃. Dioxins in the off-gas were recorded as 0.029 ng I-TEQ/Nma （international toxic equivalent, I-TEQ）, well below 0.5 ngTEQ/Nm^3（toxic equivalent, TEQ）, while those in the melted product （slag） were 0.00035 ng/g I-TEQ. Molten slag from the furnace showed excellent resistance against the leaching of heavy metals. These results prove that the plasma furnace is effective for the detoxification and stabilization of MSWI fly ash.Municipal solid waste incinerator （MSWI） fly ash was melted using a set of direct current （DC） arc plasma furnace system for the first time in China. At a feed-rate of flying ash of 80 kg/h, the temperature at the gas outlet was above 1300℃. Dioxins in the off-gas were recorded as 0.029 ng I-TEQ/Nma （international toxic equivalent, I-TEQ）, well below 0.5 ngTEQ/Nm^3（toxic equivalent, TEQ）, while those in the melted product （slag） were 0.00035 ng/g I-TEQ. Molten slag from the furnace showed excellent resistance against the leaching of heavy metals. These results prove that the plasma furnace is effective for the detoxification and stabilization of MSWI fly ash.

关 键 词：fly ash PLASMA MELTING DIOXINS heavy metal 

分 类 号：TM501.2[电气工程—电器] O53[理学—等离子体物理]