稀土钙钛矿型复合氧化物降氮助燃剂的研究与应用  

Study on Rare-Earth Perovskite-Type Catalyst FP-DN for Reducing NO_x and CO Emissions and Industrial Application in FCC Units

作　　者：陈华[1] 董超芳[1] 李晓刚[1] 吴俊升[1] 

机构地区：[1]北京科技大学,北京100083

出　　处：《稀有金属材料与工程》2006年第12期1949-1953,共5页Rare Metal Materials and Engineering

基　　金：感谢北京市腐蚀、磨蚀与表面技术重点实验室对本研究工作给予资助.

摘　　要：采用有机羟基酸络合-浸渍法制备了稀土钙钛矿型复合氧化物降氮助燃剂FP-DN,对其活性组分、载体进行了筛选,研究了过渡元素Cu的用量、活性组分负载量、以及焙烧温度对其催化性能的影响。实验结果表明,LSCMCx/γ-Al2O3系列催化剂,多余Cu量为0.2mol^0.5mol,负载量为10%~15%,焙烧温度为550℃~650℃时,催化剂对CO氧化,NO+CO反应的综合催化性能最佳。稀土钙钛矿型复合氧化物降氮助燃剂在锦西重油催化裂化装置上的工业试验表明,其对二再烟气中NOx的脱除率可以达到92.01%。Rare-earth perovskite-type complex oxide DeNO, and CO oxidation catalyst FP-DN was prepared by organic hydroxyl acid complex-impregnation method. The active components and carriers were screened. The influences of transition element Cu content, impregnation concentration, and calcination temperature on catalytic activity were discussed. The experiment results indicated that the activities of LSCMCx/γ-Al2O3 series catalysts to CO oxidation and NO＋CO reaction were optimum, when the excessive content of element Cu was 0.2 mol-0.5 mol, impregnation concentration was 10%-15%, calcination temperature was 550℃-650℃. The commercial application results of FP-DN in Jinxi Petrochemical Plant indicated that the removal efficiency of NOx in the second regeneration unit have reached 92.01%.

关 键 词：稀土钙钛矿 CO氧化 NO+CO反应 催化裂化 络合-浸渍法 

分 类 号：TE624.8[石油与天然气工程—油气加工工程]