臭氧强化氧化氧化锌法脱硫过程中产生的亚硫酸锌  

Basic research on the enhanced oxidation of zinc sulfite by ozone in the desulfurization process by zinc oxide

作　　者：曹雪娇 张廷安[1] 刘燕[1] 张伟光[1] 李思敏 吕国志[1] 韩秀秀 CAO Xuejiao;ZHANG Ting’an;LIU Yan;ZHANG Weiguang;LI Simin;LYU Guozhi;HAN Xiuxiu(Key Laboratory for Ecological Metallurgy of Multimetallic Mineral,Ministry of Education,Northeastern University,Shenyang 110819,China)

机构地区：[1]东北大学多金属共生矿生态化冶金教育部重点实验室

出　　处：《有色金属科学与工程》2020年第1期1-7,共7页Nonferrous Metals Science and Engineering

基　　金：国家自然科学基金资助项目(U1760120)

摘　　要：氧化锌法脱除低浓度二氧化硫过程中副产物亚硫酸锌的氧化回收利用是影响脱硫工艺发展的重要步骤,同时也是解决脱硫系统设备管道结垢堵塞问题的关键,文中提出利用臭氧强化氧化亚硫酸锌生成可溶性硫酸锌的新方法。研究了亚硫酸锌初始含量、搅拌转速、臭氧流量、溶液初始pH以及温度对臭氧氧化亚硫酸锌的影响。结果表明氧化过程中溶液的pH先升高后降低,溶液中锌离子浓度随氧化时间的增加而增加。亚硫酸锌臭氧氧化速率随初始亚硫酸锌含量的增加先增加后降低,随搅拌转速的增加而增大,随臭氧流量的增加先增加后减小,随溶液初始pH的增加而增加,温度对氧化速率的影响较小。研究结果为氧化锌法高效脱硫及副产物的回收利用提供了理论基础。The recycling of zinc sulphate,a by-product in the removal of sulfur dioxide of low concentration by zinc oxide,is an important step to affect the desulfurization process and also the key to solving the fouling and plugging of equipment pipelines caused by low oxidation rate of the desulfurization system.A novel method of ozone-enhanced oxidation process to oxidize zinc sulfite and form soluble zinc sulfate was proposed in this paper.Effect of the initial concentration of zinc sulfite,stirring speed,ozone flow rate,initial pH,and temperature on the process was investigated.The results showed that the pH of the solution increased first and then decreased during the oxidation process and the concentration of zinc ions increased linearly with the increase of oxidation time during the process.The oxidation rate increased first and then decreased with the increase of initial zinc sulfite concentration or the ozone flow rate.As the stirring speed or the initial pH increased,the oxidation rate also increased.Temperature showed slight effect on the oxidation rate.The research results provided a theoretical basis for the efficient desulfurization by using zinc oxide and the recycling of by-products.

关 键 词：臭氧 亚硫酸锌 氧化速率 强化氧化 

分 类 号：TF813[冶金工程—有色金属冶金]