钠碱法处理废杂铜冶炼SO_(2)烟气的实践及优化  

Practice and Optimization of Using Sodium Alkali Method for the Treatment of SO_(2) Gas from the Scrap Copper Smelting Process

作　　者：何文成 张代飞 HE Wencheng;ZHANG Daifei(National Rare Earth Functional Material Innovation Center,Ganzhou,Jiangxi 341199,China;Jiangxi Huagan Nerin Precious Metals Technology Co.,Ltd.,Fengcheng,Jiangxi 331100,China)

机构地区：[1]国家稀土功能材料创新中心,江西赣州341100 [2]江西华赣瑞林稀贵金属科技有限公司,江西丰城331100

出　　处：《有色冶金设计与研究》2022年第5期21-24,共4页Nonferrous Metals Engineering & Research

摘　　要：介绍了某稀贵公司采用钠碱法工艺处理废杂铜冶炼工艺尾气的生产实践及优化情况。该工艺采用碱液作为吸收介质,通过脱硫塔对尾气中的SO_(2)进行深度吸收,处理后尾气中的SO_(2)含量可稳定达到国家限值标准。通过研究脱硫循环液pH值、脱硫循环液密度对脱硫效率的影响,发现脱硫效率随着pH值的升高而增大,随着脱硫循环液密度的增大而减小;在实际生产中,将pH值控制在6.8~7.2,脱硫液密度控制在150-200 kg/m^(3)更为合适。同时,针对生产实践中存在的问题,提出相应的解决措施。The paper introduces the production practice and optimization of using sodium alkali method for the treatment of tail gas from the scrap copper process.The process uses alkali liquor as the absorption medium for the deep absorption of SO_(2) in the tail gas of desulfurization tower.After being treated,the SO_(2) content in the tail gas can steadily be up to the national limit standard.By studying the influence of pH value and density of desulfurization circulating liquid on desulfurization efficiency,it is found that desulfurization efficiency increases with the increase of pH value and decreases with the increase of density.It is more appropriate to control pH value at 6.8~7.2 and density at 150-200 kg/m^(3) in actual production.Furthermore,the paper also analyzes the problems existing in production practice,and puts forward the corresponding solutions.

关 键 词：二氧化硫 废杂铜 钠碱法 控制参数 生产实践 尾气达标排放 

分 类 号：X701.3[环境科学与工程—环境工程] TF811[冶金工程—有色金属冶金]