Modeling and simulation of drying characteristics on flexible filamentous particles in rotary dryers

Conghui Gu; Chao Zhang; Xin Zhang; Naihong Ding; Bin Li; Zhulin Yuan

Korean Journal of Chemical Engineering, Vol.34, No.1, 20-28, January, 2017

DOI10.1007/s11814-016-0224-1 Export Citation

Modeling and simulation of drying characteristics on flexible filamentous particles in rotary dryers

Conghui Gu^{1, 2}, Chao Zhang³, Xin Zhang^{1, 4}, Naihong Ding³, Bin Li², and Zhulin Yuan^{1, 4, †}

¹Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing, China
²Key Laboratory of Tobacco Processing Technology of China National Tobacco Corporation, Zhengzhou Tobacco Research Institute of China National Tobacco Corporation, Zhengzhou, China
³Technology Center, China Tobacco Anhui Industrial Co., Hefei, China
⁴, China

E-mail:

Experiments were conducted to demonstrate the effects of the drum wall temperature on the heat and mass transfer in rotary dryers. The drying characteristics of flexible filamentous particles in rotary dryers were further explored. In addition, the inlet and outlet temperatures and moisture contents of granular particles were measured. As a result, the good agreement between the simulations and experiments verified the rationale and feasibility of the numerical method. Therefore, the approach was adopted to evaluate the temperature and moisture content of wet granular particles in a rotary dryer in different conditions, for instance, drum wall temperature and rotational speed. The results revealed that the higher drum wall temperature led to hotter particles with lower outlet moisture content. Conversely, the higher rotational speed resulted in cooler particles with higher outlet moisture content due to the decrease of residence time in the rotary dryer.

Keywords:Flexible Filamentous Particles;Heat and Mass Transfer;Experimental Model;Numerical Simulation;Rotary Dryers

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[Referenced By]

[1] Herrmann H, Physics World, 10, 31 (1997)

[2] Bridgwater J, Chem. Eng. Sci., 50(24), 4081 (1995)

[3] Huang ZG, Mao ZH, Food Sci., 24, 185 (2003)

[4] Di K, Li J, Cereal Feed Industry, 12, 16 (2011)

[5] Cao CW, Zhu WX, Computer simulation of agricultural drying process, China Agriculture Press, Beijing, 74 (2000).

[6] Wang J, Li SJ, Yang YC, Packaging Food Machinery, 29, 44 (2011)

[7] Wang FY, Cameron IT, Litster JD, Douglas PL, Drying Technol., 11, 1641 (1993)

[8] Wang FY, Cameron IT, Litster JD, Douglas PL, Drying Technol., 13, 737 (1995)

[9] Wang FY, Cameron IT, Litster JD, Rudolph V, Drying Technol., 13, 1261 (1995)

[10] Kaneko Y, Shiojima T, Horio M, Chem. Eng. Sci., 54(24), 5809 (1999)

[11] Li J, Mason DJ, Mujumdar AS, Drying Technol., 21, 1839 (2003)

[12] Li J, Mason DJ, Powder Technol., 3, 273 (2000)

[13] Hatzilyberis KS, Androutsophoulos GP, Salmas CE, Drying Technol., 18, 2009 (2000)

[14] Renaud M, Thibault J, Alvarez PI, Drying Technol., 19, 2131 (2000)

[15] Vargas WL, McCarthy JJ, AIChE J., 47(5), 1052 (2001)

[16] Zhu LP, Yuan ZL, Yan YM, CIESC J., 63, 2051 (2012)

[17] Zhu LP, Yuan ZL, Yan YM, CIESC J., 64, 2736 (2013)

[18] Zhang HL, Yang SR, Xu ZM, J. Eng. Thermophysics, 26, 277 (2005)

[19] Gu CH, Zhang X, Li B, Powder Technol., 267, 234 (2014)

[20] Geng F, Yuan ZL, Yan YM, Luo DS, Wang HS, Li B, Xu DY, Powder Technol., 193(1), 50 (2009)

[21] Tong JG, Engineering Thermodynamics, Higher Education Press, Beijing, 58 (2007).

[22] Huang ZG, Zhu H, Li D, Computer Simulation, 23, 330 (2006)

[23] Zi WH, He BH, Liu J, Journal of Kunming University of Science and Technology, 37, 85 (2012)

[24] Huang ZG, Li D, Zhu H, Machinery Design & Manufacture, 1, 33 (2005)

[25] Hosseinabadi HZ, Layeghi M, Berthold D, Drying Technol., 32, 55 (2014)

[26] Santos RM, Llanos JWP, Drying Technol., 33, 37 (2015)

[27] Friedman SJ, Marshall WR, Chem. Eng. Process., 45, 482 (1949)

[28] Abbasfard H, Ghader S, Rafsanjani HH, Drying Technol., 31, 1297 (2013)

[29] Abbasfard H, Rafsanjani HH, Ghader S, Ghanbari M, Powder Technol., 239, 499 (2013)

[30] GB/T21305-2007, Cereals and cereal products--Determination of moisture content--Routine reference method, Standards Press of China, Beijing (2007).

[31] Eslamian M, Ahmed M, Ashgriz N, Nanotechnology, 17, 1674 (2006)

[32] Eslamian M, Ahmed M, Ashgriz N, Drying Technol., 27, 3 (2009)

[33] Eslamian M, Ahmed M, Ali AHH, Drying Technol., 29, 1025 (2011)

[34] Jin GM, Drying Equipment, Shanghai Science and Technology, Shanghai (2002).

[35] Ding KZ, Deng GD, He R, Acta Tabacaria Sinica, 3, 33 (2010)

[36] Qiu CW, Technology and Enterprise, 8, 327 (2012)

[37] Zhao JF, Li B, Zhu WK, Manufacturing Technol., 6, 12 (2011)