摘要
通过实验室模拟废气脱硫实验,研究了软锰矿浓度、氧含量、废气流量、SO2浓度和操作温度对脱硫成酸的影响,结果表明:低浓度软锰矿浓度对废气中SO2发生显著的催化氧化作用,当软锰矿浓度>500mg/L时,脱硫效率可达80%。氧对软锰矿催化氧化SO2发挥了重要作用,应>10%。废气流量和进口SO2浓度对成酸作用影响较小,操作温度为60℃最好。软锰矿催化脱硫的机理分析表明,过程是液相Mn、Fe协同催化与固相催化作用相结合。
Effect of pyrolusite slurry, O2, flow of waste gas, concentration of SO2 and temperature on catalyzed desulfurization was studied. Results showed that low concentration pyrolusite slurry had strong catalysis oxidation of SO2 from waste gas. Removal efficiency of SO2 was over 80% at 500mg/L of pyrolusite. Oxygen with concentration above 10% played an important role in catalyzed reaction. Flow rate of waste gas and concentration of SO2 had little effect on oxidation of SO2, with optimum temperature around 60℃. Mechanism of catalyzed oxidation of SO2 with pyrolusite suggested that the process was combined catalysis in the presence of Mn and Fe both in solution and solid.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2008年第2期13-15,37,共4页
Environmental Science & Technology
基金
国家自然科学基金资助项目(50278059)
