Theoretical formation model of dioxin in iron ore sintering process
Dioxin is the unintentional synthesized extreme toxic Persistent Organic Pollutants (POPs) in the sintering process. The process of dioxins formation and decomposition in the sintering bed layer, as well as the reaction mechanism and related theoretical model of different temperature sector were expounded in this paper. The correlated research indicated that: in the low temperature sector (200-500℃), chlorobenzene and chlorphenol are the representation precursors of dioxins precursors catalytic reaction, the dioxin formed in this temperature sector cased by the de novo under catalyst (like Cu2+) on the surface of smoke particles, its catalytic mechanism of the same phases and heterogeneous all satisfied the four-step reaction model;high-temperature gas phase reaction mechanism of dioxin satisfied the first-order kinetic model, the formation of gas related with suitable precursors, it is the result of chlorinated precursors pyrolytic rearrangement like chlorobenzene and chlorophenol in the temperature sector 500-800℃ in the gas.
Hongming Long Jiaxin Li Guangwu Tang
School of Metallurgy and Resource,Anhui University of Technology, Maanshan 243002,China School of Metallurgy and Resource,Anhui University of Technology,Maanshan 243002,China
国际会议
哈尔滨
英文
88-92
2011-03-26（万方平台首次上网日期，不代表论文的发表时间）