Liquid flow characteristics of structured corrugation SiC-foam packing sheets

doi:10.11949/j.issn.0438-1157.20160329

CIESC Journal ›› 2016, Vol. 67 ›› Issue (8): 3340-3346.DOI: 10.11949/j.issn.0438-1157.20160329

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Liquid flow characteristics of structured corrugation SiC-foam packing sheets

LIU Qiaoyu¹, LI Hong^1,2,3, GAO Xin^1,2,3, LI Xingang^1,2,3

1 School of Chemical Engineering, Tianjin University, Tianjin 300072, China;
2 National Engineering Research Center of Distillation Technology, Tianjin 300072, China;
3 Collaborative Innovation Center of Chemical Science and Engineering(Tianjin), Tianjin 300072, China

Received:2016-03-22 Revised:2016-06-14 Online:2016-08-05 Published:2016-08-05
Supported by:
supported by the National Natural Science Foundation of China (21336007), the National Basic Research Program of China (2012CB215005), the National High Technology Research and Development Program of China (2015AA03A602) and the Key Technology R&D Program of Tianjin (15ZCZDGX00330).

泡沫碳化硅波纹规整填料内的液体流动特性

刘巧钰¹, 李洪^1,2,3, 高鑫^1,2,3, 李鑫钢^1,2,3

1 天津大学化工学院, 天津 300072;
2 精馏技术国家工程研究中心, 天津 300072;
3 天津化学化工协同创新中心, 天津 300072

通讯作者: 高鑫
基金资助:
国家自然科学基金项目（21336007）；国家重点基础研究发展计划项目（2012CB215005）；国家高技术研究发展计划项目（2015AA03A602）；天津市科技支撑计划重点项目（15ZCZDGX00330）。

Abstract

Abstract:

The microscopic liquid flow characteristics of the structured corrugation foam packing (SCFP) sheets with different combinations of the pore size and the extrusion ratio are observed experimentally in this paper. The tracks of liquid water under different flow rates were recorded by a high-speed camera with a micro lens. A combination of liquid film and quasi-wall flow is verified as the unique liquid flow pattern in SCFP sheets. Besides, the study on the liquid transportation of combined SCFP sheets is carried out. Furthermore, the liquid flow characteristics of SCFP sheets are compared with two classical packing sheets widely used in distillation. The comparison results demonstrate that the unique three-dimensional network structure of SiC skeleton makes SCFP sheets realize larger liquid dispersion degree for single corrugated sheet and better liquid transportation capability for combined corrugated sheets. The study suggests that SiC-foam material has a broad application prospect in the field of structured packing.

Key words: structured packing, flow, porous media, transport, distillation

摘要：

通过采用配备微距镜头的高速摄像仪记录单波纹片上的液体流动行为，发现了泡沫碳化硅波纹规整填料内同时存在液膜流动和准壁流两种液体流动模式。同时测定了组合波纹片之间的液体传递量，并将泡沫碳化硅波纹规整填料与金属丝网波纹填料和金属板波纹规整填料的测试结果进行比较，结果表明泡沫碳化硅波纹规整填料的单波纹片上的液体扩散程度较大，组合波纹片之间的液体传递量高于金属丝网波纹填料和金属板波纹规整填料。研究结果揭示了泡沫碳化硅波纹规整填料具有高效传质特性的根本原因在于其独特的三维空间网孔结构增强了液体在单波纹片上的横向扩散能力和在组合波纹片之间的径向传递能力，为新型高效规整填料的机理研究和进一步开发开拓了思路。

关键词: 规整填料, 流动, 多孔介质, 传递, 蒸馏

CLC Number:

TQ02

LIU Qiaoyu, LI Hong, GAO Xin, LI Xingang. Liquid flow characteristics of structured corrugation SiC-foam packing sheets[J]. CIESC Journal, 2016, 67(8): 3340-3346.

刘巧钰, 李洪, 高鑫, 李鑫钢. 泡沫碳化硅波纹规整填料内的液体流动特性[J]. 化工学报, 2016, 67(8): 3340-3346.

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Liquid flow characteristics of structured corrugation SiC-foam packing sheets

泡沫碳化硅波纹规整填料内的液体流动特性

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