Predicting effect factors of dual bag filter system for PCDD/Fs removal from hazardous waste incineration flue gas  

作　　者：Yanan Li Qi Liu Minghui Tang Fei Wang Shengyong Lu Makwarimba Chengetai Portia Yong Chi 

机构地区：[1]State Key Laboratory of Clean Energy Utilization,Institute for Thermal Power Engineering,Zhejiang University,Hangzhou,310027,China

出　　处：《Waste Disposal and Sustainable Energy》2023年第2期177-187,共11页废弃物处置与可持续能源（英文）

基　　金：supported by the National Key R&D Program of China(No.2019YFC1907000);the National Nature Science Foundation of China(No.51976188);the Science and Technology Plan Project of Zhejiang Province(No.2021C03162,No.2022C03092);the Key Project of Innovation of Science and Technology of Ningbo City(No.2018B10023);the Natural Science Foundation of Zhejiang Province(No.LY21E060007).

摘　　要：The dual bag filter(DBF)system is a new polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans(PCDD/Fs)emission control technology that has more efficient(PCDD/Fs)removal performance,a higher activated carbon utilization rate and less activated carbon consumption compared with the traditional single bag filter system.Moreover,few studies have been relevant to the mechanism of the PCDD/Fs removal process in the DBF system,and the selection of operating conditions of the DBF system lacks an academic basis.This study established a PCDD/Fs removal efficiency model of activated carbon injection combined bag filter(ACI+DBF)system for hazardous waste incineration flue gas and predicted the crucial effect factors.New adsorption coefficients k_(1)=532,145 Nm^(3)/(mol s)and k_(2)=45 Nm^(3)/(mol s),and the relationship expression between the number of available adsorption positions of recycled AC(AAC′)and cycle times(n)are proposed in the model.The results verify that the model error was below 5%.In addition,the PCDD/Fs removal efficiency model predicts that in a certain range,the PCDD/Fs removal efficiency increases with increasing activated carbon injection concentration.The best cycle number of activated carbon was less than 3,and the ratio of circulating activated carbon to fresh activated carbon in second bag filter(SBF)should be controlled at 7–8.

关 键 词：PCDD/Fs removal Hazardous waste Activated carbon Dual bag filter Removal efficiency model 

分 类 号：X701[环境科学与工程—环境工程]