裂化催化剂的设计对清洁汽油生产的影响  

THE EFFECT OF FCC CATALYST DESIGN ON CLEAN GASOLINE PRODUCTION

作　　者：陈蓓艳[1] 蒋文斌[1] 何鸣元[1] 达志坚[1] 

机构地区：[1]石油化工科学研究院,北京100083

出　　处：《石油炼制与化工》2005年第12期33-36,共4页Petroleum Processing and Petrochemicals

基　　金：国家重点基础研究发展规划项目(G2000048001)。

摘　　要：根据FCC过程生产清洁汽油对催化剂的要求,从催化剂基质、分子筛平衡晶胞、沸石与基质的表面积之比(Z/M)、新功能组元的引入及其作用等方面提出了裂化催化剂的设计思路,并通过重油小型固定流化床反应进行验证。小试结果表明,有一定酸性的大孔基质材料起到很好的传质、传热作用,有助于提高催化剂活性中心的利用率;较大的平衡晶胞有利于双分子反应,改进汽油质量;较高的Z/M可以明显改善汽油的族组成;新功能组元增强了催化剂催化选择性氢转移反应和芳构化反应的能力。与常规裂化催化剂相比,设计的催化剂在焦炭选择性、重油裂化能力、汽油质量方面都有明显改善。In order to produce clean gasoline components by FCC process, several factors involved in catalyst design were investigated including matrix preparation, the equilibrium unit cell size of zeolite, the ratio of surface area of zeolite to matrix （Z/M） and the incorporation of new functional components. Success of this new FCC catalyst design concept was achieved and validated by the evaluation results from a fixed-fluidized bed reactor. The results showed that the macro-pore matrix with appropriate acidity favored the mass and heat transfer during the reactions and the utilization of active sites increased; the large equilibrium unit cell size and the high ratio of Z/M had the advantage of improving FCC gasoline quality;adding new functional components enhanced the selective hydrogen transfer performance and aromatization of the catalyst. The pilot plant test results showed that as compared with the conventional FCC catalysts the newly designed catalyst exhibited excellent properties in improving coke selectivity, residue conversion and gasoline quality.

关 键 词：双反应区 催化裂化 汽油料 催化剂 

分 类 号：TE624.9[石油与天然气工程—油气加工工程]