超声波雾化技术对磷矿浆脱硫强化的影响分析  

Analysis on influence of ultrasonic atomization technology on desulfurization enhancement of phosphate rock slurry

作　　者：姚梅 王访 李锐 李紫珍 高冀芸 刘晨辉 刘天成 宁平[2] 贾丽娟 YAO Mei;WANG Fang;LI Rui;LI Zizhen;GAO Jiyun;LIU Chenhui;LIU Tiancheng;NING Ping;JIA Lijuan(Key Laboratory of Comprehensive Utilization of Mineral Resources in Ethnic Regions,Key Laboratory of Resource Clean Conversion in Ethnic Regions,Education Department of Yunnan,School of Chemistry and Environment,Yunnan Minzu University,Kunming 650500,China;College of Environmental Science and Engineering,Kunming University of Science and Technology,Kunming 650500,China)

机构地区：[1]云南民族大学化学与环境学院,云南省高校民族地区资源清洁转化重点实验室,民族地区矿产资源综合利用重点实验室,昆明650500 [2]昆明理工大学环境科学与工程学院,昆明650500

出　　处：《环境工程学报》2020年第7期1862-1870,共9页Chinese Journal of Environmental Engineering

基　　金：国家自然科学基金资助项目(51568067,51968075);云南省应用基础研究项目(2016FB100)。

摘　　要：为了对磷矿浆湿法脱硫技术进行强化,实验将超声波雾化技术应用于磷矿浆脱硫,考察了吸收温度、进气流量、固液比、雾化功率、pH对脱硫效率的影响。结果表明:在SO2进口浓度为1 500 mg·m-3、氧含量为15%、进气流量为0.3 L·min-1、吸收温度为35℃、固液比为25∶100、雾化功率为30 W的最佳条件下,磷矿浆脱硫率≥90%的反应时间可持续在620 min以上。经过对反应前后的磷矿粉及吸收液的分析,得出反应过程中一些离子及元素的变化规律。该工艺操作简便,对SO2净化效率高,原料价廉易得,同时可副产磷肥,有助于实现烟气中SO2的净化与磷矿的资源化。In order to strengthen the wet desulfurization technology of phosphate rock slurry, the ultrasonic atomization technology was applied to the desulfurization of phosphate rock slurry. Then the effects of absorption temperature, intake flow rate, solid-liquid ratio, atomization power and pH on the desulfurization efficiency were investigated. The result showed that under the optimum conditions as follows: SO2 intake concentration of 1 500 mg·m-3, 15% O2 in the simulated flue gas was, intake flow rate of 0.3 L·min-1, absorption temperature of 35 ℃, solid-liquid ratio of 25∶100 and atomization power of 30 W, the reaction time with the removal efficiency higher than 90% could maintained longer than 620 min. After analyzing the phosphate rock and the absorption liquid before and after the reaction, the changes of some ions and elements during the reaction process were determined. The technology is simple and convenient to operate and has high SO2 purification efficiency, its raw materials are cheap and available, and it can produce the by-product of phosphate fertilizer, which will facilitate the implement of SO2 purification in flue gas and resource utilization of phosphate rock.

关 键 词：磷矿浆 催化氧化 超声波雾化 脱硫 

分 类 号：X701[环境科学与工程—环境工程]