Abstract: Among a variety of experimental methods to study the liquid-liquid mixing process,quantitative visualization techniques can display the mixing effects at different locations in the flow field simultaneously,as well as the evolution of the mixing process with time.The laser-induced fluorescence technique,a non-intrusive,highly accurate,easy-to-implement quantitative visualization technique,is widely used to study liquid-liquid mixing behavior in the chemical processes.This review introduces the principles and implementation methods of laser-induced fluorescence technique and discusses the progress of its applications in the investigation of both non-reactive and reactive mixing behavior.The outlook of some potential areas of this technique is also presented.

Key words: liquid-liquid mixing, reactive mixing, visualization technique, laser-induced fluorescence, non-intrusive technique

摘要： 在研究混合过程的多种实验方法中,定量的可视化测量技术不仅可同时显示流场中各位置混合效果的差异,还可直观地反映混合过程随时间的变化规律。其中,激光诱导荧光技术具有测量精度高、无干扰流场、实现方式简单等优势,是用于检测化工过程流动-混合行为的先进测试技术。对该技术的测试原理、实现方式进行了详细的介绍,探讨该技术在可视化液体混合过程以及反应流混合过程的研究进展。

关键词: 液液混合, 反应流混合, 可视化技术, 激光诱导荧光, 无干扰流场