HL/HW复合沸石对烃类催化裂化催化剂性能的影响  

Effects of HL/HW Composite Zeolite on the Performance of Hydrocarbon Catalytic Cracking Catalyst

作　　者：霍全[1] 窦涛[1] 李聃[1] 韦国有[2] 孙胜男[1] 潘惠芳[1] 

机构地区：[1]中国石油大学(北京)CNPC催化重点实验室,北京102249 [2]中国石油化工股份有限公司催化剂长岭分公司,湖南岳阳414012

出　　处：《催化学报》2009年第9期907-912,共6页

基　　金：中国石油化工股份有限公司科学技术研究开发项目(105101)

摘　　要：将不同HW沸石含量(以W及L沸石的XRD特定峰强度IW/IL值表示HW沸石在HL/HW复合沸石中的含量)的HL/HW复合沸石与REUSY沸石按相同比例复配后作为烃类催化裂化催化剂的活性组分,采用标准轻油微反方法对催化剂进行了活性评价(MAT),考察了不同HW含量的HL/HW复合沸石对催化剂活性、反应产物分布、汽油产品辛烷值及催化剂上积炭的影响.结果表明,当IW/IL值在0～0.12变化时,MAT指数和汽油收率逐渐上升,比积炭逐渐减少,气体收率先减后增;当IW/IL值大于0.12时,MAT指数、气体收率和汽油收率均下降,比积炭总体呈增加趋势;当IW/IL值为0.12时,评价的综合指标达到最佳,与不加HL及HW沸石的参比样品相比,汽油产品的芳烃含量和辛烷值分别提高了9.85%和3.01%,烯烃含量下降了1.30%.The mixture of zeolite REUSY and HL/HW composite zeolite with different contents of zeolite HW （IW/IL, the intensity ratio of XRD characteristic peaks for zeolite W and zeolite L, denoted as the content of zeolite HW in HL/HW composite zeolite） was used as the active component of catalytic cracking catalyst. The microactivity test （MAT） was carried out to study the effect of HL/HW composite zeolite with different IW/IL values in the cracking catalyst on the activity, product distribution, coke deposition, and research octane number （RON） of obtained gasoline. The results show that when IW/IL value is in the range of 04）.12, the MAT index and the yield of gasoline increase, the specific coke decreases, and the yield of gaseous product first decreases and then increases. When the IW/IL value is higher than 0.12, the MAT index, the yield of gasoline, and yield of gaseous product decrease, and the specific coke increases. When IW/IL value is 0.12, the catalyst shows good performance. Compared with the comparative catalyst （no zeolites L and W introduced）, aromatic content of gasoline product and RON increase by 9.85% and 3.01%, resoectively, and olefin content decreases by 1.30%.

关 键 词：REUSY沸石 L沸石 W沸石 复合沸石 催化裂化催化剂 辛烷值 

分 类 号：O643.36[理学—物理化学]