微波辅助加氢裂化LAY分子筛制备  

Preparation of Hydrocracking LAY Zeolite by Microwave-assisted Method

作　　者：杨柳 缪赟 李腾飞 王岚[2] 王龙耀[2] YANG Liu;MIAO Yun;LI Tengfei;WANG Lan;WANG Longyao(Institute of Engineer Technology,Sinopec Catalyst Limited Company,Beijing 101111,China;College of Petrochemical Technology,Changzhou University,Changzhou 213164,China)

机构地区：[1]中国石化催化剂有限公司工程技术研究院,北京101111 [2]常州大学石油化工学院,江苏常州213164

出　　处：《化学反应工程与工艺》2021年第4期312-317,共6页Chemical Reaction Engineering and Technology

基　　金：国家自然科学基金资助项目(21503024)。

摘　　要：针对加氢裂化LAY分子筛的制备,考察了微波辅助USY分子筛铵离子交换改性和氟硅酸铵改性过程,优化了制备工艺条件,并对分子筛的结构形貌等进行了表征。结果表明:与传统的4次逆流交换与1次混合酸改性制备工艺相比,新技术突破了制备工艺流程繁琐的瓶颈,其中分子筛离子交换改性可1次完成,且反应时间缩短至15 min。采用微波辅助技术制备的加氢裂化LAY分子筛,其主要物化性质参数满足同类型分子筛工业产品质量要求,新技术方法能够为加氢裂化分子筛工业生产优化提供关键技术支持。In the processes of hydrocracking LAY zeolite preparation,the microwave-assisted ion exchange reaction process between USY zeolite and ammonium chloride solution and the(NH4)2SiF6 modification process were investigated with experiment.The preparation process conditions were optimized.The structure and morphology of the molecular sieve were characterized.Compared with the traditional preparation technology(four times countercurrent exchange and one time mixed acid modification),the new technology broke through the cumbersome bottleneck of the preparation process.The zeolite ion exchange modification could be completed in one step,and the reaction time could be shortened to 15 minutes.The main physical and chemical property parameters of hydrocracking LAY zeolite prepared by microwave-assisted technology met the quality index requirements of the same type of zeolite in industrial production.The new process method can provide the key technical support for optimizing the industrial production of hydrocracking molecular sieves.

关 键 词：LAY分子筛 离子交换 微波辅助 氯化铵 氟硅酸铵 

分 类 号：TE624.9[石油与天然气工程—油气加工工程]