3层气体分布环式气液反应器混合时间研究  

Study on mixing time of gas-liquid loop reactor with tri-layer gas distribution

作　　者：李蒙 王浩同[2] 马炯 黄正梁[2] 王靖岱[2] 

机构地区：[1]中石化南京工程有限公司,江苏南京211100 [2]浙江大学联合化学反应工程研究所,浙江杭州310027

出　　处：《现代化工》2017年第3期164-167,共4页Modern Chemical Industry

基　　金：中国石化研发基金项目(416051)

摘　　要：以空气-水作为模拟介质,采用KCl电解质溶液为示踪剂,考察了内径为480 mm、高径比为1.65的3层气体分布环式气液反应器内,3层气体分布器的气体流量分配以及3层等径式和圆台式气体分布器结构对混合时间的作用规律。并同时考虑了外循环射流对混合时间的影响。研究发现,对于3层等径式气体分布器和异径式气体分布器,当底层气体分布器出孔气速分别为13.11 m/s和15.98 m/s时混合时间最小;引入外循环后,3层等径式气体分布器混合时间随射流量的增大呈"M"型变化,异径式气体分布器的混合时间则随射流量的增大先增加,后基本不变。The gas flow rate of tri-layer gas distributor in gas-liquid loop reactor with 480 mm of inner diameter and1. 65 of height-diameter ratio is investigated by using air and water as simulated media,KCl electrolyte solution as the tracer. The effect of the different forms of tri-layer gas distributors on mixing time is also studied. Meanwhile,the effect of outside loops on mixing time is also considered. The result shows that for equal-diameter and truncated cone-shaped trilayer gas distributors,when the out gas velocity of bottom layer distributor reaches 13. 11 m / s and 15. 98 m / s,respectively,the mixing time has the minimum value. When the outside loops are introduced,the mixing time of equaldiameter tri-layer gas distributors has the shape of ‘M ＇ with the increase of out gas velocity of the bottom layer distributor,while the mixing time of the other kind of gas distributor is firstly increased and the unchanged.

关 键 词：醋酐 羰基化 鼓泡反应器 3层气体分布器 外循环 混合时间 

分 类 号：TQ051.7[化学工程] TH11[机械工程—机械设计及理论]