酸性助剂用于降低催化汽油的烯烃质量分数  

Acid Additives For Reducing Olefin content in FCC Gasoline

作　　者：孙学文[1] 刘彦辉 樊桂臣 安玉宝 张达生 

机构地区：[1]大庆石油学院,黑龙江安达151400 [2]大庆炼化公司,黑龙江大庆163411 [3]大庆实业公司,黑龙江大庆163453

出　　处：《当代化工》2001年第3期134-136,142,共4页Contemporary Chemical Industry

摘　　要：目前车用汽油中催化裂化汽油占 80 %左右 ,针对汽油中烯烃质量分数严重超标 ,在RFCC原料中加入酸性助剂 ,用以改善催化剂活性和提高汽油的饱和度。在小型同轴催化裂化试验装置上 ,反应温度为 5 0 5～ 5 1 5℃、剂油比为 4～ 6、再生温度为 690～ 71 0℃ ,考察了酸性助剂对催化剂活性、汽油溴价、转化率、汽油收率和汽油酸值的影响。结果表明 ,加入酸性助剂后催化剂活性提高了 3～ 4个单位 ;当酸性助剂质量分数达到 0 .2 5 %～ 0 .3 5 %时 ,汽油的饱和度提高 ;汽油收率可提高 2 %～ 3 % ;酸性助剂的加入不影响汽油的酸值。At present, there is 80 % FCC gasoline in gasoline used for automobiles. Aiming at the excess of olefin, an additive was added to RFCC feedstock to improve the activity of catalyst and raise the saturation of gasoline. A test was accomplished on a small unit to inspect the influence of acid additives on the activity of catalyst, bromine value of gasoline ,the rate of conversion, the yield of gasoline and acid value of gasoline at the conditions: reaction temperature 505～515 ℃,cat./oil =4～6,regeneration temperature 690～710 ℃,The result showed that the activity of catalyst was increased by 3～4 units, the saturation of gasoline was improved ,the yield of gasoline was improved 2 %～3 %, when w(acid additives)=0.25 %～0.35 %. Additives did not affect acid value of gasoline.

关 键 词：重油 催化裂化装置 RFCCU 酸性助剂 酸性中心 烯烃质量分数 汽油 饱和度 

分 类 号：TE626.21[石油与天然气工程—油气加工工程]