新工科背景下高等分离工程教学改革与实践

面对新工科背景下研究生协同创新能力的培养需求,结合多年的教学和科研经验,对我校化工类研究生高等分离工程课程的教学内容、教学方法、教学手段及考核评价方式等进行了一系列教学改革。创建了工程案例库,采用案例教学、团队协作,注重多专业知识及其最新科研成果的融合;采用软件辅助解决复杂工程问题,通过手算-软件计算相结合的习题训练方式强化理论的理解与应用;以多元化考核模式为抓手,提高研究生的学习积极性及其自主学习能力。实践表明,该课程的教学改革及其实施明显提高了教学效果,对培养研究生的工程综合能力、表达沟通以及创新思维具有重要的意义。

Design and control of a middle-vessel batch distillation for separating DMC–EMC–DEC mixture

In this paper, the mixture of dimethyl carbonate, ethyl methyl carbonate and diethyl carbonate was separated by middle-vessel batch distillation with feeding in middle-vessel and process control characteristics were researched. The steady state simulation results in Aspen Plus were exported to Aspen Dynamics. Then control effect of liquid level control with HighSelector, composition control(structure1, structure2) and temperature control(proportional action, proportional integration action) were proposed. Composition control structure 2 and temperature control with PI action were investigated to achieve a good control effect.