不同老化时间催化裂化催化剂上加氢蜡油反应性能  

REACTION PERFORMANCE OF HYDROGENATION VGO ON CATALYTIC CRACKING CATALYSTS WITH DIFFERENT AGING TIME

作　　者：崔守业[1] 许友好[1] 刘新林 Cui Shouye;Xu Youhao;Liu Xinlin(SINOPEC Research Institute of Petroleum Processing,Beijing 100083;Zhongke(Guangdong)Refinery & Petrochemical Co.Ltd.)

机构地区：[1]中国石化石油化工科学研究院,北京100083 [2]中科(广东)炼化有限公司

出　　处：《石油炼制与化工》2020年第7期27-32,共6页Petroleum Processing and Petrochemicals

摘　　要：采用小型固定流化床装置,以加氢蜡油为原料,在反应温度为500℃、注水量为10%、质量空速为10 h^-1、剂油质量比为6的条件下,考察催化裂化催化剂老化时间对反应产物分布、气体和汽油组成等性质的影响。结果表明:催化裂化催化剂老化时间对反应产物的影响规律与催化剂酸量、比表面积等性质有良好的相关性;老化时间高于8 h时,干气和焦炭产率相对较低、总液体收率相对较高;老化时间高于25 h时,有利于多产丙烯、控制丙烷含量;汽油的总芳烃中苯占比受老化时间影响不大。但为了降低汽油中苯含量,需降低总芳烃含量,工业装置上可以通过调整催化裂化催化剂补充量来调节催化剂老化时间,以满足不同生产方案的需要。The effects of aging time of FCC catalyst on the distribution of reaction products,gas and gasoline composition were investigated in a small fixed fluidized bed unit with hydrotreated VGO as raw material under the conditions of a reaction temperature of 500℃,a water injection rate of 10%,a mass space velocity of 10 h^-1 and a mass ratio of catalyst to oil of 6.The results showed that the effects of catalyst aging time had a good correlation with the acid amount and specific surface area of catalyst.When the catalyst aging time exceeded 8 h,the yields of dry gas and coke were relatively low,while the total liquid yield was relatively high.When the catalyst aging time was more than 25 h,it was beneficial to achieve high propylene yield and control propane yield.The benzene content of total aromatics in gasoline was not affected by aging time.The reduction of the benzene content in gasoline product of different production schemes could be achieved by reducing the total amount of aromatics through changing catalyst aging time by adjusting the amount of cracking catalyst supplement.

关 键 词：催化裂化 加氢蜡油 催化剂 老化时间 产物分布 

分 类 号：TE6[石油与天然气工程—油气加工工程]