催化裂化汽油裂解制备低碳烯烃  

Preparation of Lower Olefins from Fluid Catalytic Cracking Gasoline

作　　者：陈小博[1] 张星[1] 韩忠祥[1] 山红红[1] 杨朝合[1] 张建芳[1] 

机构地区：[1]中国石油大学(华东)化学化工学院重质油国家重点实验室,山东东营257061

出　　处：《石油化工》2005年第10期943-947,共5页Petrochemical Technology

摘　　要：在小型提升管催化裂化实验装置上研究了催化裂化(FCC)汽油催化裂解生产低碳烯烃的反应规律。实验结果表明,催化剂类型、反应温度、停留时间及水蒸气用量对乙烯、丙烯的产率均有显著的影响。高温、大剂油比、长停留时间及提高水蒸气用量都可促进汽油的裂解,增加低碳烯烃的产率。在实验室条件下,以ZC-7300为催化剂,多产低碳烯烃的最佳条件:反应温度580℃,停留时间1.6s左右,剂油质量比为11,水蒸气与汽油的质量比为0.20。对不同催化剂进行了对比实验得知,自制催化剂A的催化效果最好,汽油转化率达到40%以上,乙烯+丙烯的产率达到20%以上,焦炭和干气(不含乙烯)的产率不大于5%。Preparation of lower olefins from fluid catalytic cracking（FCC） gasoline was studied in a small riser catalytic cracking experimental apparatus. Types of catalyst, reaction temperature, residence time and water steam amount obviously affected production of ethylene and propylene. Higher reaction temperature, higher mass ratio of catalyst to oil,longer residence time and larger water steam amount favored FCC gasoline cracking and yield of lower olefins increased. Optimal reaction conditions for ZC - 7300 catalyst were ： reaction temperature 580 ℃, residence time 1.6 s, mass ratio of catalyst to oil 11, and mass ratio of water steam to oil 0.20. Activity of catalyst A was higher than that of other catalysts. Conversion of gasoline could be up to 40%, and total yield of ethylene and propylene could be more than 20%. Yield of coke plus dry gas（ without ethylene）was less than 5%.

关 键 词：汽油 催化裂化 低碳烯烃 乙烯 丙烯 催化剂 

分 类 号：TQ203.8[化学工程—有机化工]