磁性铁矿石对CO还原SO_2的催化活性  

Catalytic Activity of Magnetic Iron Ore for SO_2 Reduction by CO

作　　者：张锦丽[1] 胡辉[1] 许杰[1] 张妍[1] 曾召伟[1] 

机构地区：[1]华中科技大学环境科学与工程学院,湖北武汉430074

出　　处：《化工环保》2013年第5期386-389,共4页Environmental Protection of Chemical Industry

基　　金：国家"863"计划资助项目(2012AA062501);湖北省自然科学基金资助项目(2009CDB246)

摘　　要：采用磁性强弱不同的铁矿石以及制备的Fe3O4作为催化剂,催化CO还原SO2。实验结果表明:在3种催化剂中弱磁性铁矿石对CO还原SO2的催化活性最好;当反应温度为700℃时,在弱磁性铁矿石催化作用下的SO2转化率达84.3%。该方法既可以有效去除炼油厂催化裂化再生装置排放的SO2,同时又利用了低品位的磁性铁矿石,实现了SO2的治理和资源的综合利用。Two kinds of iron ore with different magnetic intensity and the prepared Fe3O4 were used as catalysts in the reduction of SO2 by CO. The experimental results show that： Among the 3 catalysts, the weakly magnetic iron ore has the best catalytic activity; When the reaction temperature is 700 ℃, the conversion rate of SO2 is 84.3%. With this method, not only SO2 can be effectively removed from refinery catalytic cracking flue gas, but also the low grade iron ore with weak magnetic intensity can be used.

关 键 词：铁矿石 磁性 四氧化三铁 催化剂 还原 二氧化硫 一氧化碳 废气处理 

分 类 号：X511[环境科学与工程—环境工程]