Experimental Investigation of the Drying Kinetics of Corn in a Packed and Fluidized Bed

Document Type : Research Article

Authors

1 Faculty of Mechanical Engineering, University of Niš, Niš, SERBIA

2 Faculty of Mechanical Engineering, University of Belgrade, Belgrade, SERBIA

Abstract

In this paper, experimental data on the drying kinetics of corn in a packed and fluidized bed are presented. Experimental research was conducted on a laboratory apparatus. Corn was used as a material because of its significance in agriculture and the food industry. An analysis of the influence of the operational parameters (the drying medium velocity i. e. the fluidization number, the drying medium temperature and the height of a packed bed) on the drying kinetics of corn, was performed. The experimentshows that increasing the fluidization number and the velocity of the drying medium, has no significant influence on the drying kinetics of corn, except during the initial period of drying.

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Main Subjects


[1] Abbasyadeh A., Motevali A., Ghobadian B., Khoshtaghaza M., Minaei S., Effect of Air Velocity and Temperature on Energy and Effective Moisture Diffusivity for Russian Olive in Thin-Layer Drying, Iranian Journal of Chemistry and Chemical Engineering (IJCCE), 31(1): 75-79 (2012).
[2] Hatamipour M.S., Mowla D., Correlations for Shrinkage, Density and Diffusivity for Drying of Maize and Green Peas in a Fluidized Bed with Energy Carrier Particles, Journal of Food Engineering, 59: 221-227 (2003).
[3] Jovanović G., Ćatipović N., Fitzgerald T., Levenspiel O., "Fluidization", Plenum, 325-332 (1990).
[4] Lee D.H., Kim S.D., Mathematical Model for Batch Drying in an Inert Medium Fluidized Bed, Chemical Engineering Technology 22: 443-450 (1999).
[5] Lykov A.V., "Heat and Mass Transfer" (Teplomasoobmen), Energia, Moscow, (1976).
[6] Milojević D., "Analysis of Heat and Mass Transfer Kinetics of Convective Drying in Dense Grained bed of Capillary-Porous Colloid Materials", M. S. Thesis, Faculty of Mechanical Engineering, University of Belgrade (1979).
[7] Nair G. R., L. Zhenfeng, Y. Garipey, V. Raghavan, Microwave Drying of Corn for the Seed Industry, Drying Technology, 29: 1291-1296 (2011).
[8] Soponronnarit S., Pontornkulpanich A., Prachayamwarakom S., Drying Characteristics of Corn in Fluidized Bed Dryer, Drying Technology, 15:1603-1615 (1997).
[9] Stefanović M., Nešić S., "Presentation of the ITE Method for Analysis of Drying Kinetics and the Computer Program for its Application", IBK-ITE-488, Vincha - Belgrade (1984).
[10] Stojanović B., Janevski J., Stojiljković M., Experimental Investigation of Thermal Conductivity Coefficient and Heat Exchange between Fluidized Bed and Inclined Exchange Surface, Brazilian Journal of Chemical Engineering, 26, 343-352 (2009).
[11] Stojkovski V., Z. Kostić, Empirical Correlation for Prediction of the Elutration Rate Constant, Thermal Science: 7: 43-58 (2003).
[12] Strumillo C., Kudra T., "Drying: Principles, Applications and Design", Gordon&Breach Science Publishers, New York, USA, (1987).
[13] Abbasyadeh A., Motevali A., Ghobadian B., Khoshtaghaza M., Minaei S., Effect of Air Velocity and Temperature on Energy and Effective Moisture Diffusivity for Russian Olive in Thin-Layer Drying, Iranian Journal of Chemistry and Chemical Engineering (IJCCE), 31(1): 75-79 (2012).
[14] Srzednicki G., Driscoll R. H., Xinghe N., Daolin G., Strategies for In-store Drying Based on the Analzsis of Weather Data-Case Study, Drying Technology, 30(16): 1863-1869 (2012).
[15] Estrada J. A., Litchfield J. B., High Humidity Drying of Corn: Effect on Drying Rate and Product Quality, Drying Technology, 15(2): 539-554 (1997).
[16] Khanali M., Rafiee Sh., Jafari A., Hashemabadi S.H., Banisharif A., Mathematical Modeling of Fluidized Bed Drying of Rough Rice Grain, Journal of Agricultural Technology, 8 (3): 795-810 (2012).
[17] Abasi S., Minaei S., Effect of Drying Temperature on Mechanical Properties of Dried Corn, Drying Technology, 32(7): 774-780 (2014).