摘要
近年来,低温等离子体技术以及纳米TiO2光催化技术在烟气脱硫中的应用越来越引起人们的关注。利用填充床反应器将这2种技术有机地结合起来,进行了大量脱硫实验研究。研究结果表明,等离子体协同光催化去除烟气中的SO2与单独采用等离子体技术相比,其SO2的去除率可提高5%-20%。同时,探讨了等离子体协同TiO2光催化剂的脱硫机理,分别研究了外加电压、气体流量和SO2初始浓度等因素对脱硫效率的影响。实验结果表明,当SO2初始浓度为800mg/m^3,输入电压为17.5 kV,气体流量为0.2 m^3/h时,SO2脱除率可以达到77.6%。
In recent years,the application of plasma and nanometer TiO2 photocatalysis in desulphurization has attracted more and more attention. The two techniques were combined in a packed bed reactor, and a lot of desulphurization experiments were done. The research results show that comparing with the single plasma technique,the SO2 removal rate of the combination technique is increased 5% -20%. The desulphurization mechanism of plasma and photocatalysis as well as the effects of factors such as input voltage,gas flow and initial concentration of SO2 on the removal rate of SO2 are discussed. The results show that the removal rate can reach 77.6% when the initial concentration is 800 mg/m^3 ,input voltage is 17.5 kV and gas flow is 0.2 m^3/h.
出处
《环境工程学报》
CAS
CSCD
北大核心
2007年第8期89-91,共3页
Chinese Journal of Environmental Engineering
基金
国家自然科学基金资助项目(50276025)
江苏大学高级专业人才科研基金资助项目(05JDG052)
关键词
脱硫
等离子体
光催化
填充床反应器
desulfurization
plasma
photocatalysis
packed bed reactor
