融合CFD方法的搅拌反应器气液传质实验教学  

The Experimental Teaching of Gas-liquid Mass Transfer in Stirred Reactor Coupling with CFD Method

作　　者：蔡子琦[1] 马鑫[1] 王江豪 王君豪 李志鹏[1] 包雨云[1] Cai Ziqi;Ma Xin;Wang Jianghao;Wang Junhao;Li Zhipeng;Bao Yuyun(Beijing University of Chemical Technology,Beijing 100029,China)

机构地区：[1]北京化工大学,北京100029

出　　处：《广东化工》2023年第21期149-153,148,共6页Guangdong Chemical Industry

摘　　要：搅拌反应器气液传质实验是《化学反应工程》的基础实验,主要通过对搅拌反应器内的气液传质特性进行测定,并通过关联式回归得到诸因素对传质系数的定量影响规律。但在传统的实验教学中,学时及实验测试技术的限制使得无法直接获取反应器内气液两相流的流场结构等影响传质特性相关信息。计算流体力学(CFD)方法可以从定性和定量角度揭示流场结构、气体分布以及气液传质等特性,并具有可视化、计算效率高等优点。将CFD方法与气液搅拌反应器传质实验教学融合,可加深学生对搅拌反应器内气液分散及传质机理的理解,培养学生解决化学工程问题的高阶能力。Gas-liquid mass transfer experiment in stirred reactors is a fundamental experiment for the study of Chemical Reaction Engineering.The characteristics of gas-liquid mass transfer in stirred reactors were measured in experiments,and the influence of various parameters was quantitatively evaluated by using regression-based mass transfer correlations.Due to the limitation of both teaching hours and measurement techniques in traditional experimental teaching,it is impossible to obtain information related to flow structures and mass transfer mechanisms of the gas-liquid two phases in reactors.Computational fluid dynamics(CFD)method could provide both qualitative and quantitative flow patterns,gas distribution,gas-liquid interactions,and gas-liquid mass transfer.CFD method also has many benefits including convenient visualization,reduced simulation times,and low cost.Combining CFD method with mass transfer experimental teaching helps enhance students'comprehension of gas-liquid dispersion and mass transfer mechanisms in stirred reactors,while concurrently cultivating their proficiency in solving chemical engineering problems.

关 键 词：CFD方法 实验教学 搅拌反应器 流场结构 气液传质 

分 类 号：G420[文化科学—课程与教学论]