基于解决复杂工程问题能力培养的汽液平衡数据测定实验教学改革  

Experimental Teaching Reform for the Determination of Vapor-Liquid Equilibrium Data Based on the Ability Cultivation of Solving Complex Engineering Problems

作　　者：王菊[1] 吴现力[1] 许洁 杜春华[1] Wang Ju;Wu Xianli;Xu Jie;Du Chunhua(College of Chemistry&Pharmaceutical Sciences,Qingdao Agricultural University,Qingdao 266109,Shandong,China)

机构地区：[1]青岛农业大学化学与药学院,山东青岛266109

出　　处：《化工高等教育》2023年第6期116-123,129,共9页Higher Education in Chemical Engineering

基　　金：青岛农业大学2023年普通教学改革研究项目(PX-1523265);山东省本科高校教学改革研究项目(P2020020);青岛农业大学重点教研项目(XJY2018007)。

摘　　要：共沸或近沸混合物的高效分离是化工过程中典型的复杂工程问题。针对汽液平衡数据测定实验教学对学生解决复杂工程问题能力培养不足的现状,我们改用具有最低共沸点的正丙醇-水实验体系,结合基础理论和工程实践设置预习思考题,用学生实测的汽液平衡数据回归Wilson模型参数,并用上述参数指导萃取精馏制备无水正丙醇的精馏塔设计。实践表明,将实验教学与工程实际相结合,用实测数据指导过程设计,能够加深学生对工程实践的认识,切实提高学生解决复杂工程问题的能力。Efficient separation of azeotropic or near-boiling mixtures is a typical complex engineering problem in chemical processes.In view of the current situation that the ability cultivation of solving complex engineering problems is not enough in the determination of vapor-liquid equilibrium data,an experimental teaching reform was performed.The n-propanol-water system with the lowest azeotropic point was used as the experimental system.Preview questions were set up based on basic theory and engineering practice.Interaction parameters of Wilson model were regressed based on vapor-liquid equilibrium data determined by students.The above parameters were used to guide the design of distillation columns for the preparation of anhydrous n-propanol by extractive distillation.Combined experimental teaching with engineering practice, the improved experiment used measured data to guideengineering design, which can deepen students' understanding of engineering practice and effectivelyimprove their ability to solve complex engineering problems.

关 键 词：复杂工程问题 汽液平衡 萃取精馏 实验教学改革 

分 类 号：G642.423[文化科学—高等教育学] TQ028-4[文化科学—教育学]