文献类型：期刊文献

中文题名：稀土氧化物上SO_2和NO的催化还原V.以城市煤气作还原剂同步脱硫脱氮

英文题名：Catalytic Reduction of SO_2 and NO by CO over Rare Earth Oxides V.Simultaneous Reduction by Using Town Gas as Reducing Agent

作者：王磊[1];马建新[1]

机构：[1]华东理工大学化学系,上海200237

年份：2006

卷号：47

期号：6

起止页码：325

中文期刊名：化学世界

外文期刊名：Chemical World

收录：北大核心:【北大核心2004】；CSCD:【CSCD2011_2012】；

基金：国家自然科学基金资助项目(29777008)

语种：中文

中文关键词：稀土氧化物;城市煤气;脱硫;脱氮;催化还原

外文关键词：rare earth oxide; town gas ; desulfurization ; denitrification ; catalytic reduction

摘要：考察了氧化镧作催化剂在单独脱硫和同步脱硫脱氮反应中,城市煤气替代CO作还原剂的可行性.结果表明在La2O3催化剂上,不仅可以获得较高的单独脱硫效率,而且也有较高的同步脱硫脱氮转化率.煤气中的CH4在任何情况下都不参与反应,而其中的H2视反应温度的高低而不同程度地参与反应.当反应温度低于600℃时,H2不参与反应.研究表明适宜的反应温度为500℃～550℃,此时副产物H2S和COS的生成均为最小,可使SO2和NO的转化率分别大于87%和97%,元素S的选择性接近100%.
The feasibility of using town gas instead of pure CO as reducing agent was studied in both separate desulfurization process and simultaneous desulfurization and denitrificatin processes. The catalytic behaviors of the lanthanide oxides did not change significantly. High efficiency could be obtained in both processes. The component CH4 in the town gas was inert in the reaction course, while the reactivity of the component H2 depended on the reaction temperature. At the temperature below 600℃, the hydrogen contained in the gas was non-reactive. Experimental results showed that the conversions of SO2 and NO were over 87 % and 97 % respectively, and the selectivity to elemental sulfur was almost 100% when La2O3 was used and the temperature was between 500 - 550℃.