Zonal gas distribution in pulsed fluidized bed dryers

• Autorzy: Gawrzyński Z. , Rychlik M.

Warianty tytułu

PL

Rozdział gazu na tarczowym rozdzielaczu w układzie pulsofluidalnym

• Języki publikacji: EN

Abstrakty

EN

Hydrodynamic characteristics of a disc gas distributor in classical and modified pulsed fluidized bed (PFB) systems were investigated. The equations for the local flow coefficient and pressure drop in the distributor have been developed. The equations can be used in calculations of power consumption in PFB dryers. The experimental findings indicate that the pressure drop of a rotational gas distributor in the PFB with modified pulsation is lower than in a standard PFB which can influence the invest costs of PFB dryers.

PL

Przedstawiono wyniki badań doświadczalnych charakterystyki tarczowego rozdzielacza gazu w klasycznym i modyfikowanym układzie pulsofluidalnym. Opracowano równania określające współczynnik oporu lokalnego i spadek ciśnienia na rozdzielaczu. Wyniki badań wskazują, że spadek ciśnienia na rozdzielaczu gazu w układzie PFB z modyfikowaną pulsacją jest mniejszy niż w klasycznej odmianie rozdzielacza, co może mieć wpływ na koszty inwestycyjne układu pulsofluidalnego.

Słowa kluczowe

EN

gas; PFB; pulsed fluidized bed

PL

gaz; PFB; układ pulsofluidalny

• Wydawca: Komitet Inżynierii Chemicznej i Procesowej Polskiej Akademii Nauk
• Czasopismo: Chemical and Process Engineering
• Rocznik: 2010
• Tom: Vol. 31, z. 1
• Strony: 53--66
• Opis fizyczny: Bibliogr. 26 poz.,Wykr., rys.,

Twórcy

autor

Gawrzyński Z.

autor

Rychlik M.

• Department of Apparatus and Chemical Engineering, Wrocław University of Economics, ul. Komandorska 118/120, 53-345 Wrocław

Bibliografia

• [1] BLACHA-JURKIEWICZ J., Hydrodynamics and Drying Kinetics in Rough Particles Materials Drying in Pulsed Fluid Layer with Cyclically Relocated Gas Stream, PhD Thesis, ITPChiS University of Economics, Wrocław, 1982.
• [2] BRETSZNAJDER S., Process Designing Aspects in the Chemical Industry, Vol. 1, PWT, Warsaw, 1956 (In Polish).
• [3] CHUA K.J., MUJUMDAR A.S., CHOU S.K., Biores. Techn., 2003, 90, 285.
• [4] DEVAHASTIN S., MUJUMDAR A.S., Powder Techn., 2001, 117, 189.
• [5] DEVAHASTIN S., MUJUMDAR A.S., RAGHAVAN G.S.V., Powder Techn., 1999, 103, 169.
• [6] DIURKOV T.G., ELENKOV V.R., DOAN N., Fluidization by a Locally Pulsating Gas Jet. Non-published study, 1998.
• [7] GAWRZYŃSKI Z., GLASER R., Drying Techn., 1996, 14, 1121.
• [8] GAWRZYŃSKI Z., GLASER R., KUDRA T.,.STANISŁAWSKI J., Chem. Proc. Eng., 1999, 24, 149 (in Polish).
• [9] GAWRZYŃSKI Z., GLASER R., ZGORZALEWICZ J., STANISŁAWSKI J., ROGULA G., PIECZABA B., Operational test for a pulsed fluid bed dryer/coller for granulated sugar, [In:] Proc. Int. Drying Symposium (IDS’96), Cracow, Poland, 30 July–2 August, 1996, 472.
• [10] GAWRZYŃSKI Z., NOWACZEWSKA-TORBUS A., The Bed Structure in the Spouted Fluidized Bed, Proc. 11th Polish Drying Symposium, 2005, Poznań, Poland, September 2005.
• [11] GAWRZYŃSKI Z., PIECZABA B., RYCHLIK M., The Mixing Characteristics in the Pulsed Fluid Bed with Cyclically Relocated Gas Stream And Fluid Bed, [In:] Proc. 15th Int. Drying Symposium (IDS’2006), 2006, Budapest, Hungary, August 20–23, 2006.
• [12] GAWRZYŃSKI Z., PIECZABA B., Pulsed Fluid Bed Dryer with Zoned Lengthwise Pulsation, [In:] Proc. Int. Drying Symposium (IDS2000), Noordwijkerhout, The Netherlands, August 28–31, 2000; Paper No. 353.
• [13] GAWRZYŃSKI Z., RYCHLIK M., A Pulsed Fluid Bed System with Relocated Gas Stream and Modified Pulsation Profile, [In:] Proc. 29th SSCHE Conference, Tatranské Matliare, Slovakia, May 27–29, 2002, Paper No. 17.
• [14] GAWRZYŃSKI Z., RYCHLIK M., Drying of Dispersed Material in Pseudo Fluid System in Pulsed Fluidized Bed, [In:] Proc 10th Polish Drying Symposium, Łódź, Poland, September 17–19, 2003, p. 323.
• [15] GAWRZYŃSKI Z., RYCHLIK M., Chem. Proc. Eng., 2007, 28, 603.
• [16] GLASER R., GAWRZYŃSKI Z., BLACHA-JURKIEWICZ J., STANISŁAWSKI J., STYCZYŃSKA M., The Industry Prototype of the Pulsed Fluid Cooler for Crystal Sugar, [In:] Proc. 12th Polish Chemical and Process Engineering Conference, Poznań, Poland, 1986, p. 106 (in Polish).
• [17] GLASER R., Chem. Proc. Eng., 1993, 3, 407 (in Polish).
• [18] JUMAH R.Y., MUJUMDAR A.S., RAGHAVAN G.S.V., Chem. Eng. J., 1998, 70, 209.
• [19] KUNII D., LEVENSPIEL O., Fluidization Engineering, Boston, Butterworth-Heinemann, 1991.
• [20] NITZ M., TARANTO O.P., Experimental Study of Microcrystalline Cellulose Coating Process in Rotative-Pulsed Fluidized Bed, [In:] Proc. 15th International Drying Symposium (IDS 2006), Budapest, Hungary, August 20–23, 2006, p. 1073.
• [21] PIECZABA B., Drying Techn., 2005, 24, 1334.
• [22] PRACHAYAWARAKORN S., TIA W., POOPAIBOON K., SOPONRONNARIT S., J. Stored Prod. Res., 2005, 41, 479.
• [23] ROGULA G., Hydrodynamics and Drying Kinetics of Powdery Materials in Pulsed Fluid Bed, PhD Thesis, Wrocław University of Techlogy, Wrocław 2001.
• [24] RYCHLIK M., Hydrodynamics and Drying Kinetics in Pulsed Fluid Bed System with Modified Pulsation, PhD Thesis, Wrocław University of Technology, Wrocław 2007.
• [25] STANISŁAWSKI J., Drying Techn., 2005, 23, 1711.
• [26] TROSKOLAŃSKI A.T., Hydrodynamics, Vol. 2, PWT, Warsaw, 1954 (in Polish).