Experimental Study of Drying Process of COLZA Seeds in Fluidized Bed Dryer by Statistical Methods
ABSTRACT
In this study the effect of initial parameters such as inlet gas temperature, initial particles temperature and gas velocity on temperature changes of solid particles and outlet gas temperature in a fluidized bed dryer was studied. For testing, an experimental setup was established. With combination of air and Colza seeds belonging to D groups of the Geldart classification (Geldart, 1986) fluidization regime was carried out. With five test series with maintaining the inlet gas temperature, solid particle temperature and outlet gas temperature during time were carefully measured. To analyze these data by using regression analysis to predict solid particle and outlet gas temperature, 2 correlations on initial pa-rameters were presented. The result has shown that temperature gradients in the beginning of fluidization, is very high and therefore the exponential functions in the regression model is used to predict the temperature changes.
In this study the effect of initial parameters such as inlet gas temperature, initial particles temperature and gas velocity on temperature changes of solid particles and outlet gas temperature in a fluidized bed dryer was studied. For testing, an experimental setup was established. With combination of air and Colza seeds belonging to D groups of the Geldart classification (Geldart, 1986) fluidization regime was carried out. With five test series with maintaining the inlet gas temperature, solid particle temperature and outlet gas temperature during time were carefully measured. To analyze these data by using regression analysis to predict solid particle and outlet gas temperature, 2 correlations on initial pa-rameters were presented. The result has shown that temperature gradients in the beginning of fluidization, is very high and therefore the exponential functions in the regression model is used to predict the temperature changes.
Cite this paper
J. Khorshidi and H. Davari, "Experimental Study of Drying Process of COLZA Seeds in Fluidized Bed Dryer by Statistical Methods," Advances in Chemical Engineering and Science, Vol. 2 No. 1, 2012, pp. 129-135. doi: 10.4236/aces.2012.21016.
J. Khorshidi and H. Davari, "Experimental Study of Drying Process of COLZA Seeds in Fluidized Bed Dryer by Statistical Methods," Advances in Chemical Engineering and Science, Vol. 2 No. 1, 2012, pp. 129-135. doi: 10.4236/aces.2012.21016.
References
[1] K. Diazo and L. Octave, “Fluidization Engineering,” 2nd Edition, Butterworth, Heinemann, 1991. [2] V. Joao, F. A. Biscaia Jr., C. Evaristo and M. Giulio, “Modeling of Biomass Drying in Fluidized Bed,” Proceedings of the 14th International Drying Symposium, S?o Paulo, 22-25 August 2004, pp. 1104-1111. [3] H. Subramani, M. B. Mothivel and M. Lima, “Minimum Fluidization Velocity at Elevated Temperatures for Geldart’s Group-B Powders,” Experimental Thermal and Fluid Science, Vol. 32, No. 1, 2007, pp. 166-173. [4] A. C. Rizzi Jr., M. L. Passos and J. T. Freire, “Modeling and Simulating the Drying of Grass Seeds (Brachiaria brizantha) in Fluidized Beds: Evaluation of Heat Transfer Coefficient,” Brazilian Journal of Chemical Engineering, Vol. 26, No. 3, 2009, pp. 545-554. doi: 10.1590/S0104-66322009000300010 [5] J. Khorshidi, H. Davari and F. Dehbozorgi, “Model Making for Heat Transfer in a Fluidized Bed Dryer,” Journal of Basic & Applied Sciences, Vol. 1, No. 10, 2011, pp. 1732-1738. [6] S. Minaei and E. Hazbavi, “Determination and Investigation of Some Physical Properties of Seven Variety Rapeseed,” Iranian Journal of Food Science and Technology, Vol. 5, No. 4, 2008, pp. 21-28.
[1] K. Diazo and L. Octave, “Fluidization Engineering,” 2nd Edition, Butterworth, Heinemann, 1991. [2] V. Joao, F. A. Biscaia Jr., C. Evaristo and M. Giulio, “Modeling of Biomass Drying in Fluidized Bed,” Proceedings of the 14th International Drying Symposium, S?o Paulo, 22-25 August 2004, pp. 1104-1111. [3] H. Subramani, M. B. Mothivel and M. Lima, “Minimum Fluidization Velocity at Elevated Temperatures for Geldart’s Group-B Powders,” Experimental Thermal and Fluid Science, Vol. 32, No. 1, 2007, pp. 166-173. [4] A. C. Rizzi Jr., M. L. Passos and J. T. Freire, “Modeling and Simulating the Drying of Grass Seeds (Brachiaria brizantha) in Fluidized Beds: Evaluation of Heat Transfer Coefficient,” Brazilian Journal of Chemical Engineering, Vol. 26, No. 3, 2009, pp. 545-554. doi: 10.1590/S0104-66322009000300010 [5] J. Khorshidi, H. Davari and F. Dehbozorgi, “Model Making for Heat Transfer in a Fluidized Bed Dryer,” Journal of Basic & Applied Sciences, Vol. 1, No. 10, 2011, pp. 1732-1738. [6] S. Minaei and E. Hazbavi, “Determination and Investigation of Some Physical Properties of Seven Variety Rapeseed,” Iranian Journal of Food Science and Technology, Vol. 5, No. 4, 2008, pp. 21-28.