对撞流干燥的实验与理论研究

CIESC Journal

• RESEARCH PAPERS • 上一篇下一篇

对撞流干燥的实验与理论研究

淮秀兰; 刘登瀛; SHIGERU Koyama; BIDYUT Baran Saha

Institute of Advanced Material Study,Kyushu University,Kasuga-koen 6-1,Kasuga-shi,Fukuoka
816-8580,Japan

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2003-02-28 发布日期:2003-02-28
通讯作者: 淮秀兰

Experimental and Theoretical Analysis of the Impinging Stream Drying

HUAI Xiulan; LIU Dengying; SHIGERU Koyama

Institute of Advanced Material Study,Kyushu University,Kasuga-koen 6-1,Kasuga-shi,Fukuoka
816-8580,Japan

Received:1900-01-01 Revised:1900-01-01 Online:2003-02-28 Published:2003-02-28
Contact: HUAI Xiulan

摘要/Abstract

摘要： The experiments of one-stage semi-circular and two-stage semi-circular impinging stream
drying as wellas the vertical and semi-circular combined impinging stream drying were
carried out. The velocity distribution andthe mean residence time of particles, and the
influence of various factors on drying characteristics were studied. Amathematical model of
granular material drying in a semi-circular impinging stream dryer was proposed, in
whichthe flow characteristics as well as the heat and mass transfer mechanisms were
considered. Reasonable numericalmethods were used to solve the equations. Under various
conditions, the calculated results agree well with theexperimental data. The unsteady-state
drying dynamic equation, as well as the variations of drying rate andmoisture content
versus time were obtained. The results indicate that constant drying rate period does not
existin a semi-circular impinging stream dryer. Appropriate semi-circular stage number and
curvature radius, flow-rateratio, air velocity, and higher inlet air temperature should be
used for enhancing the drying process.

关键词: impinging stream drying;flow characteristics;drying characteristics;mathematical model

Abstract: The experiments of one-stage semi-circular and two-stage semi-circular impinging stream
drying as wellas the vertical and semi-circular combined impinging stream drying were
carried out. The velocity distribution andthe mean residence time of particles, and the
influence of various factors on drying characteristics were studied. Amathematical model of
granular material drying in a semi-circular impinging stream dryer was proposed, in
whichthe flow characteristics as well as the heat and mass transfer mechanisms were
considered. Reasonable numericalmethods were used to solve the equations. Under various
conditions, the calculated results agree well with theexperimental data. The unsteady-state
drying dynamic equation, as well as the variations of drying rate andmoisture content
versus time were obtained. The results indicate that constant drying rate period does not
existin a semi-circular impinging stream dryer. Appropriate semi-circular stage number and
curvature radius, flow-rateratio, air velocity, and higher inlet air temperature should be
used for enhancing the drying process.

Key words: impinging stream drying, flow characteristics, drying characteristics, mathematical model

淮秀兰, 刘登瀛, SHIGERU Koyama, BIDYUT Baran Saha. 对撞流干燥的实验与理论研究[J]. CIESC Journal.

HUAI Xiulan, LIU Dengying, SHIGERU Koyama. Experimental and Theoretical Analysis of the Impinging Stream Drying[J]. .

参考文献

[1] Liu, D.Y., Modern Drying Technology, Chemical Industry Press, Beijing, 621 (1998). (in
Chinese)
[2] Huai, X.L, Liu, D.Y., Wu, T., "Experimental investigation of semi-circular impinging
stream drying", J. Engineering Thermophysics, 20 (2), 199 (1999). (in Chinese)
[3] Huai, X.L., Liu, D.Y., Li, C.Z., Meng, Q., "The investigation on combined impinging
stream dryer of vertical and sloped semi-circle", 12th International Drying Symposium,
Netherlands (2000).
[4] Li, C.Z., Xu, C.H., Liu, D.Y., Huai, X.L., "Vertical and inclined semi-circular
combined impinging stream drying", J. Northeast University, 22 (1), 47 (2001). (in Chinese)
[5] Hu, X.G., Liu, D.Y., "Experimental investigation on the flow and drying characteristics
of a vertical impinging stream dryer", Proceeding of 11th IHTC, Vol.5, 1879, Korea (1998).
[6] Cao, C.W., Liu, X.D., "Experimental study on impinging stream drying of particulate
materials", 12th International Drying Symposium, Netherlands (2000).
[7] Enyakin, Yu.P., "Depth of penetration of solid or liquid par ticles in opposing gas-
suspension jets", J. Eng. Phys., 14 (6), 512 (1986).
[8] Kitron, Y., Ta mir, A., "Characterization and scale-up of coaxial impinging stream gas
-solid contactors", Drying Technology, 8 (4), 718 (1990).
[9] Tamir, A., Kitron, Y., "Vertical impinging-streams and bed dryers: Comparison and
performance characteristics", Drying Technology, 7 (2), 183 (1989).
[10] Kudra, T., Mujumdar, A.S., "Impingement stream dryers for particles and pastes",
Drying Technology, 7 (2), 219 (1989).
[11] Liu, D.Y., Huai, X.L., "Experimental investigation of combined impinging stream
drying", CHEMECA’99, Australia (1999).
[12] Huai, X.L., Liu, D.Y., "Analysis of flow and heat-mass transfer during materials
drying in a semi-circular impinging stream dryer", Transactions of the Chinese Society of
Agricultrual Machinery, 30 (5), (1999). (in Chinese)
[13] Huai, X.L., Liu, D.Y., "Numerical simulation of semi circular impinging stream
drying", The 1st Drying Conference in Asia-Australia, Indonesia (1999).

对撞流干燥的实验与理论研究

Experimental and Theoretical Analysis of the Impinging Stream Drying

PDF (PC)

可视化

被引次数

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 0

编辑推荐

Metrics

本文评价