铁矿石烧结行业二噁英类形成机制与排放水平  

Formation mechanism and emission profiles of PCDD/Fs in iron ore sintering

作　　者：王梦京 吴素愫 高新华[3] 侯梅芳[1] 唐琛[2] 刘文彬[2] 

机构地区：[1]上海应用技术学院生态技术与工程学院,上海201418 [2]中国科学院生态环境研究中心,北京100085 [3]环保部环境保护对外合作中心,北京100035

出　　处：《环境化学》2014年第10期1723-1732,共10页Environmental Chemistry

基　　金：国家重点基础研究发展计划(2011CB201500);中国科学院战略性先导科技专项(XDB14000000);国家自然科学基金(21321004)资助

摘　　要：铁矿石烧结是我国重要的二噁英类(PCDD/Fs)排放源之一.本文总结了烧结过程PCDD/Fs的生成机制,以及典型烧结烟气的PCDD/Fs排放特征.针对影响PCDD/Fs生成的关键因素进行了分析,探讨了原料组成中关键元素的影响,以及温度、时间和氧气含量等条件的影响,进而对PCDD/Fs的减排技术等方面进行了讨论.最后本文还对部分发达国家和我国的铁矿石烧结行业PCDD/Fs排放现状进行了分析和展望.可为我国铁矿石烧结行业PCDD/Fs的管理和减排提供参考.Iron ore sintering is one of the important emission sources for PCDD /Fs. This paper summarized formation mechanisms of PCDD /Fs in sintering process and the emission profile of PCDD /Fs in typical sintering stack gas. Key influencing factors of PCDD /Fs formation,including temperature,time,oxygen concentration and other conditions in raw material composition were analyzed. Reduction technologies of PCDD /Fs emission were also suggested in this paper. Finally,it provided analysis and outlook on the current emission of PCDD /Fs from iron ore sintering industry in China and several developed countries. It is aimed to provide reference for the management and reduction of emission of PCDD /Fs in the iron ore sintering industry in China.

关 键 词：二噁英类 形成机理 影响因素 阻滞 减排 

分 类 号：X757[环境科学与工程—环境工程]