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Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received March 28, 2016
Accepted August 5, 2016

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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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 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

101004322@seu.edu.cn

Korean Journal of Chemical Engineering, January 2017, 34(1), 20-28(9), 10.1007/s11814-016-0224-1

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Abstract

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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