微反应器的结构优化设计与仿真

摘要

A two-step microreactor was designed,and the influence of geometry parameters on reaction was optimized.To improve hybrid in the mix channel of the microreactor,the rib obstacles that can induce chaotic convection were designed.The ratio of height of obstacle and channel,the ratio of width of obstacle and spacing,and the width of obstacle were optimized with the software based on finite element theory.The serpentine channel was chose as the reaction unit of the microreactor,and the influences of the channel length,reaction time and initial concentration on reaction were investigated.Furthermore,a two-step microreactor for oxidation of glucose was designed.%设计了两步微反应器,对影响反应的几何参数进行了优化.对于微反应器的混合单元,设计了内肋型障碍物结构,用于产生混沌对流,促进样品混合.利用基于有限元原理的数值模拟软件分别对混合单元的障碍物与微通道的高宽比、障碍物宽度与间距的比值和障碍物的宽度进行设计与优化.采用蜿蜒通道作为微反应器的反应单元,研究了反应单元长度、反应时间与初始浓度对反应的影响.以葡萄糖氧化反应为例,设计了一个两步微反应器.