离子液体催化烷基化体系在微反应器内的流动和反应基础研究  

Fundamental study on flow and reaction performance of isobutane alkylation catalyzed by ionic liquid in microreactor

作　　者：玄雪梅 王苗 蔡迪宗 张睿[1] 兰文杰 XUAN Xuemei;WANG Miao;CAI Dizong;ZHANG Rui;LAN Wenjie(State Key Laboratory of Heavy Oil Processing,China University of Petroleum,Beijing 102249,China)

机构地区：[1]中国石油大学(北京)重质油国家重点实验室,北京102249

出　　处：《化工学报》2021年第11期5582-5589,共8页CIESC Journal

摘　　要：离子液体催化剂可以显著提高烷基化反应速率,开发适用于该工艺的高效反应器具有重要意义。基于微反应器在过程强化方面的优势,设计了适用于烷基化反应的微反应器,考察了烷基化模拟体系的流动规律,在较大操作范围内实现了催化剂与产物的连续分相。以上述研究为基础,实现了C4烷基化反应的微型化,分别考察了停留时间、反应温度、分散尺寸对反应性能的影响。研究结果表明,微反应器内的烷基化反应在2 s内完成。C8选择性和TMPs(三甲基戊烷)/DMHs(二甲基己烷)分别最高可达70.90%与13.4,均高于相同反应条件下搅拌釜反应器内的反应结果,证明微反应器在优化烷基化反应性能方面拥有巨大潜力。Ionic liquid catalysts can significantly increase the rate of alkylation reaction,and it is of great significance to develop high-efficiency reactors suitable for this process.Based on the advantages of microreactor in process intensification,microreactor used for alkylation reaction was designed in this paper.The flow behavior of simulated fluid system was investigated and the phase separation in a wide range of throughput was achieved continuously.According to the above study,the isobutane alkylation was realized in microreactor,and the effects of residence time,temperature and droplet size on the reaction performance were studied.This research finds that the reaction can be finished in 2 s;the maximum selectivity of C8 and TMPs/DMHs are 70.90%and 13.4 respectively,which are both higher than that in stirred tank reactor.This survey indicates that the microreactor has great potential in optimizing the alkylation reaction performance.

关 键 词：微反应器 烷基化 流动 分离 反应 

分 类 号：TQ052.5[化学工程]