气升式环流反应器.pptx

化工进展Chemical Industry and Engineering Progress2023 年第 42 卷第 S1 期三级环流反应器中气液流动与传质规律黄益平1，李婷2，郑龙云2，戚傲2，陈政霖2，史天昊2，张新宇2，郭凯2，3，胡猛1，倪泽雨1，刘辉2，3，夏苗1，主凯1，刘春江2，3，4（1 中建安装集团有限公司，南京 江苏210000；2 天津大学化工学院，天津300072；3 天津市催化科学与工程重点实验室，天津300072；4 化学工程联合国家重点实验室（天津大学），天津300072）摘要：针对级间安装导流筒的三级环流反应器的气液流动与传质过程开展实验研究。

通过冷模实验获得不同表观气速下（0.015~0.1m/s ）以及安装不同级间内构件时环流反应器内的气含率、混合时间、停留时间以及体积氧传质系数。

结果表明，随着表观气速的增加，反应器各级内的气含率增加，混合时间减少，平均停留时间减小，同时氧传质系数增加。

通过对反应器内气液流型的变化的观察，进一步分析了级间内构件对三级环流反应器性能的影响，发现内构件上截面较宽时（3#内构件），反应器的混合效果更好，而内构件的上截面较小时（1#内构件），反应器可以更好地抑制返混。

关键词：多级气升式环流反应器；多相流；级间内构件；流体动力学；气液传质中图分类号：TQ021.1 文献标志码：A 文章编号：1000-6613（2023）S1-0175-14Hydrodynamics and mass transfer characteristics of a three-stageinternal loop airlift reactorHUANG Yiping 1，LI Ting 2，ZHENG Longyun 2，QI Ao 2，CHEN Zhenglin 2，SHI Tianhao 2，ZHANG Xinyu 2，GUO Kai 2，3，HU Meng 1，NI Zeyu 1，LIU Hui 2，3，XIA Miao 1，ZHU Kai 1，LIU Chunjiang 2，3，4(1 China Construction Industrial & Energy Engineering Co., Ltd., Nanjing 210000, Jiangsu, China; 2 School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China; 3 Tianjin Key Laboratory of Applied CatalysisScience and Engineering, Tianjin 300072, China; 4 State Key Laboratory of Chemical Engineering (Tianjin University),Tianjin 300072, China)Abstract: The hydrodynamics and mass transfer characteristics of a three-stage internal loop airlift reactor were investigated experimentally. The gas hold-up, mixing time, residence time, and volumetric mass transfer coefficient were measured in the cold mode experiment under different superficial gasvelocities (0.015—0.1m/s) and internals. Experimental results showed that as the superficial gas velocity increased, the gas hold-up increased, mixing time decreased, and mean residence time decreased. Meanwhile, the volumetric mass transfer coefficient increased as the superficial gas velocity increased. The effect of internals on the reactor performance was discussed based on the flow pattern observation. It was found that the mixing effect of the reactor was better when the diameter of the upper cross-section of研究开发DOI ：10.16085/j.issn.1000-6613.2023-1269收稿日期：2023-07-23；修改稿日期：2023-10-17。