反应温度对轻汽油醚化过程的影响  

Effect of Reaction Temperature on Etherification of Light FCC Gasoline

作　　者：张少华[1] 王海彦[1] 陈文艺[1] 刘发启[1] 金亨哲 

机构地区：[1]辽宁石油化工大学,辽宁抚顺113001 [2]前郭炼油厂,吉林松原131100

出　　处：《石油化工高等学校学报》2002年第4期41-43,64,共4页Journal of Petrochemical Universities

基　　金：中国石化集团公司资助课题 (190 0 0 3)

摘　　要：在催化裂化轻汽油醚化过程中 ,反应温度对叔碳烯烃醚化转化率、二烯烃聚合转化率以及阳离子交换树脂催化剂的脱磺速率有较大的影响。随着反应温度的提高 ,叔碳烯烃转化率先增加 ,达到一个最大值后减小。当反应温度为 70℃时 ,叔碳烯烃最佳转化率达到 5 5 .32 %。当碳数相同时 ,α叔碳烯烃的转化率大于 β叔碳烯烃的转化率。不论是α叔碳烯烃与还是 β叔碳烯烃 ,它们的醚化转化率均随着碳数的增加而降低。随着反应温度的提高 ,轻汽油中二烯烃聚合转化率增大 ,产品中胶质质量分数增加。反应温度高于 80℃后 ,催化剂磺酸基脱落明显 ,催化剂活性下降 ,所以醚化反应温度应低于 80℃。In the etherification process of FCC gasoline, reaction temperature has considerable effect on the etherification conversion of tertiary carbon olefins, polymerization conversion of diene and sulfonic shedding rate. With the increasing of reaction temperature, the conversion of tertiary carbonic olefins firstly increases, then decreases, whose highest etherification conversion could be of 55.32% at 70 ℃. With increasing of carbon atom numbers, the conversion of tertiary carbonic olefins decreases. For the tertiary carbonic olefins having same carbon atoms, the conversion of α tertiary carbonic olefins is larger than β ones. The polymerization conversion of diene in light FCC gasoline and gum content in etherified product increases or decreases with the reaction temperature increasing or decreasing. The shedding rate of sulfonic group becomes distinct while reaction temperature higher than 80 ℃. Therefore, it is the reaction temperature for etherification of light gasoline that should be lower than 80 ℃.

关 键 词：反应温度 轻汽油 醚化过程 影响 催化裂化 阳离子交换树脂催化剂 

分 类 号：TE624.48[石油与天然气工程—油气加工工程] TE626.21