带废钢预热电弧炉烟气中的二噁英的产生及抑制  

The Dioxin Producing and Restraint in Fume from EAF during Scrap Preheat

作　　者：侯祥松[1,2] 

机构地区：[1]中冶赛迪工程技术股份有限公司动力设计部,重庆400013 [2]国家冶炼装备系统集成工程技术研究中心,重庆401122

出　　处：《工业加热》2011年第5期65-67,共3页Industrial Heating

基　　金：重庆市科委自然科学基金计划资助项目 (CSTC;2009BB6349)

摘　　要：介绍了电炉炼钢烟气中二嗯英的产生机理,特别介绍其废钢预热系统将使其烟气中二噁英浓度显著增加的成因,提出了带废钢预热的电炉炼钢时,应充分考虑采取废钢的分选净化、烟气有效收集和采用除脱设备等措施,特别是采用控制预热后烟气温度、喷石灰、加快余热锅炉冷却速度等合理的工艺及技术,以抑制电炉炼钢烟气中二嗯英的持续生成。The dioxin producing mechanism in EAF, especially the dioxin producing mechanism in EAF with scrap preheat is analyzed. It is shown that the scrap preheat will induce significant increment of dioxin in the fume. Some special methods should be adopted during design as scrap sorting controlling the fume temperature after scrap preheat, spraying lime, quickening cooling velocity in waste heat boiler. The dioxin deprivation device is necessary sometimes in order to satisfy the criteria.

关 键 词：电弧炉 废钢预热 烟气 二噁英 抑制措施 余热锅炉 

分 类 号：TF741.5[冶金工程—钢铁冶金]