镁铝尖晶石作为催化裂化双功能助剂的研究  

STUDY ON EMPLOYING Mg-Al SPINEL AS A DUAL-FUNCTION ADDITIVE IN RFCC

作　　者：李晓[1] 谭乐成[1] 李承烈[1] 

机构地区：[1]华东理工大学石油加工研究所,上海200237

出　　处：《石油学报（石油加工）》2001年第3期57-61,共5页Acta Petrolei Sinica(Petroleum Processing Section)

摘　　要：酸性条件下制备了一系列不同镁铝比的尖晶石 ,作为硫转移剂应用于 FCC过程中。评价了其组成、结构、Ce的引入对其硫转移活性的影响 ,得到了作为硫转移剂的最佳组成。通过 MAT活性评价和固定流化床反应评价证实 ,最佳组成的尖晶石也是合适的捕钒剂。在 FCC催化剂体系中 ,它对催化剂活性有良好的保护作用 ,同时具有捕钒和硫转移作用。尖晶石中游离 Mg O含量的增加 ,既不能使硫转移活性提高 。Alumina rich, stoichiometric and magnesium rich spinels were prepared in acidic conditions The influence of mole ratio of MgO/Al 2O 3 and cerium content on DeSO x activity and lattice constant was studied Relationships of aluminum content and lattice constant vs DeSO x activity were in line with those prepared in basic conditions Optimum composition for SO x transmission was obtained, and this spinel showed satisfactory V trap characteristics through MAT and FFB evaluation Free MgO content in magmesium rich spinels neither enhanced V trapping activity, nor the DeSO x activity

关 键 词：镁铝尖晶石 DeSOx 捕钒剂 催化裂化双功能助剂 

分 类 号：TE624.99[石油与天然气工程—油气加工工程]