规整填料内液体分布的实验研究进展.pdf

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CHEMICAL INDUSTRY AND ENGINEERING PROGRESS
2015年第34卷第8期
综述与专论
规整填料內液体分布的实验研究进展
张会书,袁希钢, KALBASSI Mohammad Ali
(天津大学化学工程联合国家重点实验室,天津30002:2空气产品公众有限公司,泰晤上河畔沃尔顿,英国)
摘要:测量规整填料内液体分布的实验方法有接液法、电导示踪法、光纤传感技术、断层成像技术和激光诱导
荧光技术等。这些实验方法比较有效,但也存在一些不足。本文介绍了各种实验方法的原理、实现方式及不足
之处,重点阐述了断层成像技术和激光诱导荧光技术。两种技术均实现了填料内液体分布的可视化,获得了持
液量,但都存在如何有效去除背景噪声的问题。激光诱导荧光技术与断层成像技术相比,具有新型、可靠、易
于实现和安全等优点。最后,探讨了激光诱导荧光技术在未来应用中的新方向,包括与粒子成像测速仪联用
与高速相机联用、对实验结果的再提取及实验填料的加工
关键词:规整填料;液体分布;断层成像技术;激光诱导荧光技术
中图分类号:TQ028文献标志码
文章编号:1000-6613(2015)08-2932-08
DOl:10.16085/isSn.1000-6613.2015.08.004
Research progress of liquid distribution in structured packing
ZHANG Huishu, YUAN Xigang, KAL BASSI Mohammad Ali
(Tianjin University, State Key Laboratory of Chemical Engineering, Tianjin 300072, China; Air Products Public
Limited Company, Walton on Thames, UK)
Abstract: Liquid distribution in structured packing can be experimentally measured by liquid
collecting, conductivity tracing, fiber-optic sensors, tomography and laser induced fluorescence
technique. These experimental methods are effective, but there are also some deficiencies. The
principles, implementations and deficiencies of these experimental methods are introduced and
discussed. Tomography and laser induced fluorescence technique are elaborated. Both techniques
realize visualization of liquid distribution and obtain liquid holdup, but there exist the problem of
how to effectively remove background noise. Compared with tomography, laser induced fluorescence
technique is novel, reliable, easy to implement and safe. Finally, new directions of laser induced
fluorescence technique in future applications are discussed, including combination with particle image
velocimetry or high-speed camera, re-extraction of experimental data and fabrication of experimental
structured packing
Key words: structured packing; liquid distribution; tomography; laser induced fluorescence technique
规整填料塔内液体分布状况直接影响着塔内流断层成像技术和激光诱导荧光技术。国内外学者己
体力学性能和传质速率。所以,塔内液体分布一直采用这些实验方法获得了塔内液体分布的基本规
是填料塔硏究的一项非常重要的基础工作。由于规律,证实了实验方法的有效性,但每种实验方法自
整填料类型繁多,材质各异,再加上塔内操作物系
和操作参数的多样性,使得塔内液体分布的研究极收精稿日期:20150126:修改稿日期:205031
其复杂。目前为止,研究规整填料内液体分布的实联系人:袁希钢,救投,从事传质分离及系统工程的研究.Enmi
验方法主要有接液法、电导示踪法、光纤传感技术、yuanxg(@tju.edu.cn