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羟基脱除烟气中SO2的实验研究
Experimental study on removal of SO2 from flue gas with hydroxyl radicals
【摘要】 利用强电离放电,将烟气中大部分O2、N2、H2O等气体分子电离后再按羟基(OH)结构模型加工成高浓度OH,在120℃不用外加催化剂吸收剂的条件下,在等离子体反应室内将SO2直接氧化成H2SO4雾,再用予荷电宽极距电收雾器加以回收成重要化工原料H2SO4.实验中分别研究了气体中的含水量、含氧量以及放电间隙内折合电场强度E n等因素对脱硫效率的影响.实验结果表明,含水量、含氧量以及折合电场强度的增加,都可以使SO2脱除率显著提高,在适宜的条件下,SO2脱除率可达到100%.
【Abstract】 Using strong ionization discharge, a majority of gas molecules in flue gas such as O2, N2 and H2O are ionized and made into hydroxyl radical (OH) of high concentration on OH structural model. Under the condition of 120 ℃, non-catalyst and non-absorbent, SO2 is directly oxidized into fogdrops of H2SO4 in plasma reactor, and then are collected as an important resource in precharge wide-gap precipitator. Some factors affecting SO2 removal efficiency such as water content and oxygen content in flue gas, reduced electric field intensity E/n in discharge space are studied in this experiment. Experimental results show that SO2 removal efficiency obviously increases with increasing water content, oxygen content and reduced electric field intensity increasing. If the condition is fitting, removal of SO2 can attain to 100%.
【Key words】 hydroxyl radical; removal of SO2; strong ionization discharge; non-equilibrium plasma; reduced electric field intensity;
- 【文献出处】 大连海事大学学报 ,Journal of Dalian Maritime University , 编辑部邮箱 ,2004年01期
- 【分类号】X701
- 【被引频次】2
- 【下载频次】78