Investigation on the Transport Characteristics of Typical Biological Slender Particles in a Pilot-Scale Rotary Dryer

Abstract:

The transport characteristics of cut tobacco as a typical biological wet slender particle were investigated in a pilot-scale rotary cylinder. Effect of solids and gas flow rate, moisture content of particles and rotating speed of cylinder was analyzed. The adaptability of the classical Friedman model for predicting average residence time of these type particles was also investigated. The result shows that the gas flow rate, moisture content of particles as well as rotating speed of cylinder have a significant influence on the axis transport velocity and forward step per cycle of cut tobacco in rotary cylinder. It’s difficult for Friedman model to accurately describe influence of gas flow rate and moisture content on transport of cut tobacco, which was associated with the particle characterize and influence of moisture content on the fluidity of particles.

• Periodical: Advanced Materials Research (Volumes 396-398)
• Pages: 315-321
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.396-398.315
• Online since: November 2011
• Authors: Wen Kui Zhu, Bin Li, Chuan Fang Yu, Liang Yuan Chen
• Keywords: Cut Tobacco, Rotary Dryer, Transport Characteristics

References

[1] Kiranoudis, C.T., Maroulis, Z.B., Marinos-Kouris D. (1996). Drying of solids : selection of some continuous operation dryer types. Computers and Chemical Engineering, 20(1), 177-182.

DOI: 10.1016/0098-1354(96)00040-3

[2] Kunii, D., & Levenspiel, O. (1991). Fluidisation Engineering, second edition, Butteworth-Heinemann, NewYork

[3] Britton, P.F., Sheeha, M.E., Schneider P.A. (2006). A physical description of solids transport in flighted rotary dryers. Powder Technology, 165(3), 153-160

DOI: 10.1016/j.powtec.2006.04.006

[4] Cao, W.F, Langrish, T.A.G. (2000). The development and validation of a system model for a countercurrent cascading rotary dryer. Drying technology, 18(1&2), 99-115

DOI: 10.1080/07373930008917695

[5] Sheehan, M.E., Britton, P.F., Schneider, P.A. (2005). A model for solids transport in flighted rotary dryers based on physical considerations. Chemical Engineering Science, 60(4), 4171-4182.

DOI: 10.1016/j.ces.2005.02.055

[6] Friedman, S.J., & Marshall, W.R. (1949). Studies in Rotary Drying, Part I-Holdup and Dusting. Chem. Eng. Prog., 45, 482–493.

[7] Renaud, M., Thibault, J., Trusiak, A. (2000). Solids transportation model of an industrial rotary dryer. Drying technology, 18(4&5), 843-865.

DOI: 10.1080/07373930008917741

[8] Xu, Q.X. & Pang, S.S. (2008). Mathematical modeling of rotary drying of woody biomass. Drying Technology, 26(11), 1344–1350.

DOI: 10.1080/07373930802331050

[9] Renaud, M., Thibault, J., Alvarez, P.I. (2001). Influence of solids moisture content on the average residence time in a rotary dryer. Drying technology, 19(9), 2131–2150

DOI: 10.1081/drt-100107491

[10] Perry, R.H. & Green, D. (1984). Chemical Engineers' Handbook, McGraw-Hill, NewYork.

[11] Shahhosseini, S, Cameron, I..T, Wang, F.Y. (2000). A simple dynamic model for solid transport in rotary dryers. Drying Technology, 18(4&5),867-886

DOI: 10.1080/07373930008917742

[12] Langrish, T.A., Papadakis, S.E., Baker, C.G. (2002). Residence times of two- and three-component mixtures in cascading rotary dryers. Drying technology, 20(2), 325–350.

DOI: 10.1081/drt-120002545