电解铝烟气二次循环净化深度除氟工艺改造及应用  

Innovation and Application of Advanced Fluoride Removal Process of the Secondary Circulatory Purification of Electrolytic Aluminum Fume

作　　者：李顺华 寸永柱 史承良 班树超 孙海艳 陈芹 LI Shunhua;CUN Yongzhu;SHI Chengliang;BAN Shuchao;SUN Haiyan;CHEN Qin(Yunnan Aluminum Yongxin Aluminum Industry Co.,Ltd.,Jianshui,Yunnan 654300,China)

机构地区：[1]云南云铝涌鑫铝业有限公司,云南建水654300

出　　处：《云南冶金》2024年第4期166-170,共5页Yunnan Metallurgy

基　　金：云南省重大科技专项计划(202202AB080003)。

摘　　要：针对电解铝烟气净化系统氧化铝投料均匀性差、清洁度低、除尘器运行效率低、载氟氧化铝载氟率低、载氟氧化铝易结壳及投料不均匀等行业共性问题,采取了溢流式投料溜槽、新型一次投料分料箱结构、新型文丘里反应器等新技术及工艺装备新设计、开发措施,完成了烟气净化一次投料、二次投料系统升级改造,载氟氧化铝的载氟率提高了51.28%、烟气中氟化物排放浓度降低了88.98%,效果显著。Electrolytic aluminum fume purification system has the following problems,such as poor uniformity of alumina feeding,low cleanliness,low operational efficiency of dust remover,low fluorine carrying rate of fluorinated-loaded alumina,fluorinated-loaded alumina is prone to crusting and uniformity feeding,and the other common problems in the industry,therefore,it adopted overflow feeding chute,new type one-time feeding and distribution box structure,new type Venturi reactor,and the other new technologies,new design and new development measures of process equipment.The upgrading and reconstruction of the one-time feeding and two-time feeding system of fume purification is finished,the fluorine carrying rate of fluorinated-loaded alumina increased by 51.28%,the fluoride discharge concentration in fume decreased by 88.98%,and the results are remarkable.

关 键 词：电解铝 烟气净化 二次循环 深度除氟 

分 类 号：TU991.266[建筑科学—市政工程]