DRYING REFINED SUGAR ON THE CONTINUOUS PULSED FLUIDIZED BED DRYER: EXPERIMENTAL STUDY ON THE MAIN TECHNOLOGICAL PARAMETERS DETERMINATION
. A continuous pulsed fluidized bed (CPFB) dryer with relocated gas stream was employed to conduct the drying of refined sugar. The experiments were carried out according to the 2-level orthogonal experimental plan, combined with multiple response optimization according to Response Surface Method (RSM) to determine the appropriate parameters (hot air temperature, hot air velocity, pulse frequency, particle mean diameter) in the refined sugar drying process. The appropriate conditions of drying process were identified at 71.5°C of hot air temperature, 2.1 m/s of hot air velocity, 0.55 Hz of pulse frequency and 467mm of particle mean diameter. At these conditions the dried refined sugar reached final moisture content of 0.035% (wet basis), the specific electrical energy and the specific heat value consumption reached 187 Wh/kg product and 1024 kJ/kg product, respectively
Ambrosio-Ugri, M. C. B., Taranto, O. P. (2007). Drying in the rotating-pulsed fluidized bed. Brazilian Journal of Chemical Engineering, 24(1), 95-100.
Baikow, V. E. (2013). Manufacture and refining of raw cane sugar. Elsevier.
Box, G. E., Hunter, J. S., & Hunter, W. G. (2005). Statistics for experimenters: design, innovation, and discovery (Vol. 2). New York: Wiley-Interscience.
Canh N (2004) Planning experiments (Book), Published by VNU HCMC, 3th ed., Viet Nam, pp120.
Gawrzynski Z., Bartosz Pieczaba (2006). Hydrodynamics of the Pulsed Fluid Bed with Cyclically Relocated Gas Stream with Lengthwise Pulsation. Drying Technology, 24:9, 1133-1137.
Gawrzynski Z., Glaser R., Kudra T. (1999). Drying of powdery materials in a pulsed fluid bed dryer. Drying Technology, 1523-1532.
Godoi F.C. et al. (2011). Analysis of the drying process of a biopolymer (poly-hydroxybutyrate) in rotating-pulsed fluidized bed. Chemical Engineering and Processing, 50, 623–629.
Kudra T. et al. (2002). Drying of pulp and paper sludge in a pulsed fluid bed dryer. Drying Techology, 917-933.
Kudra, T., & Mujumdar, A. S. (2009). Advanced drying technologies. CRC Press.
Li, Z., Kobayashi, N., Deguchi, S., & Hasatani, M. (2004). Investigation on the drying kinetics in a pulsed fluidized bed. Journal of chemical engineering of Japan, 37(9), 1179-1182.
Luciane F. G. de Souza et al (2010). Drying of sodium acetate in a pulsed fluid bed dryer. Chemical Engineering Technology, 33, No. 12, 2015–2020.
Marcello Nitz, Osvaldir P. Taranto (2009). Drying of a porous material in a pulsed fluid bed dryer: the influences of temperature, frequency of pulsation and air flow rate. Drying technology, 212-219.
Ministry of Science and Technology (2001). TCVN 6958: 2001 Refined sugar. Vietnam standard.
Ministry of Science and Technology (2001). TCVN 6961: 2001 Raw sugar. Vietnam standard.
Reyes A., Moyano P., Paz J. (2007). Drying of potato slices in a pulsed fluidized bed. Drying technology, 25(4), 581-590.
Reyes A., Ricardo V. Vega, Rodrigo D. Bruna (2010). Effect of Operating Conditions in Atmospheric Freeze Drying of Carrot Particles in a Pulsed Fluidized Bed. Drying Technology, 28(10), 1185–1192.
Sobrino et al (2007). Hydrodynamic Characteristics of a Fluidized Bed with Rotating Distributor. ECI Conference on The 12th International Conference on Fluidization - New Horizons in Fluidization Engineering, Vancouver, Canada, 767-774.
Somkiat Prachayawarakorn, Warunee Tia, Korakot Poopaiboon, Somchart Soponronnarit (2005). Comparison of performace of pulsed and conventional fluidised bed dryer. Journal of Stored Products Research, 41(5), 479–497.
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