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Hydrodynamics Study of Two Different Inverse Fluidized Reactors for the Application of Wastewater Treatment
Department of Chemical Engineering, Chungnam National University, Taejon, Korea
hchoi@hanbat.chungnam.ac.kr
Korean Journal of Chemical Engineering, September 1999, 16(5), 670-676(7), 10.1007/BF02708150
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Abstract
We investigated the hydrodynamic characteristics of two types of inverse fluidized bed reactors having different driving force for fluidization: aeration and centrifugal force. In the first reactor, only an upward gas flow allows floating low-density polyethylene beads to sink down into liquid phase and to be uniformly distributed over the entire column. The gas velocity at which the solid concentration is uniform throughout the bed expansion decreases with increasing particle loads. In the second reactor, the particle loads do not greatly affect the critical rotating velocity for the homogeneous distribution of solid particles while the geometry of reactor spacing and the type of impeller are more important for the distribution of particles. For the application of wastewater treatment, the inverse fludized bed with aeration was found to be more efficient than the second type of reactor.
References
Bastoul D, Roustan M, Capdeville B, Audic JM, "Multiphase Reactors for Biological Treatment of Urban Wastewaters," In Environmental Technologies and Trends, Produserv Verlagservice, Berlin, 183 (1996)
Choi HS, Talbot J, Tarjus G, Viot P, Phys. Rev. E, 51, 1353 (1995)
Comte MP, Bastoul D, Hebrard G, Roustan M, Lazarova V, Chem. Eng. Sci., 52(21-22), 3971 (1997)
Dibyendu S, Bag V, Pradeep K, Sukamar M, "Etching of a Low-density Polyethylene Film by Fuming Nitric Acid," Die Aangewandte Makromorekulate Chemic, 249 (1997)
Fan LS, Muroyama K, Chern SH, Chem. Eng. J., 24, 143 (1982)
Frieda Dr, Kolot B, Process Biochem., Aug-Sep, 2 (1981)
Hebrard G, Bastoul D, Roustan M, Trans. IchemE, A-74, 406 (1996)
Hihn JY, Gonthier Y, Bernis A, Rec. Prog. En Genie des Proc., 6, 11 (1992)
Hyndman CL, Guy C, Int. Chem. Eng., 73, 302 (1995)
Koh JS, Chang HN, HWAHAK KONGHAK, 17(4), 281 (1979)
Krishnaiah K, Guru S, Sekar V, Chem. Eng. J., 51, 109 (1993)
Lee SH, Choi HS, Park YT, Doh KS, HWAHAK KONGHAK, 27(4), 472 (1989)
Lee SLP, De Lasa HI, AIChE J., 33, 1359 (1987)
Legile P, Menard C, Laurent C, Thomas D, Bernis A, Entropie, 143, 11 (1988)
McCabe WL, Smith JC, Harriott P, "Unit Operations of Chemical Engineering 5th ed.," McGraw-Hill, New York (1993)
Nikolov L, Karamanev D, Can. J. Chem. Eng., 65, 214 (1987)
Roustan M, Bastoul D, Capdeville B, "Influence of the Hydrodynamic Behavirour of a Three Phase Fluidized Bed for Effluent Treatment. 3rd," Int. Conf. on Bioreactor and Bioprocess Fluid Dynamics, Cambridge, UK (1993)
Wallis G, "One-Dimensional Two Phase Flow," McGraw-Hill, New York (1969)
Wild G, Saberian M, Schwartz JL, Charpentier JC, Enrtopie, 106, 3 (1982)
Yang DC, Kim JH, Yoo YJ, HWAHAK KONGHAK, 35(1), 129 (1997)
Yoon HH, Ghim YS, Chang HN, Kim YJ, Rhee JS, HWAHAK KONGHAK, 20(4), 293 (1982)
Choi HS, Talbot J, Tarjus G, Viot P, Phys. Rev. E, 51, 1353 (1995)
Comte MP, Bastoul D, Hebrard G, Roustan M, Lazarova V, Chem. Eng. Sci., 52(21-22), 3971 (1997)
Dibyendu S, Bag V, Pradeep K, Sukamar M, "Etching of a Low-density Polyethylene Film by Fuming Nitric Acid," Die Aangewandte Makromorekulate Chemic, 249 (1997)
Fan LS, Muroyama K, Chern SH, Chem. Eng. J., 24, 143 (1982)
Frieda Dr, Kolot B, Process Biochem., Aug-Sep, 2 (1981)
Hebrard G, Bastoul D, Roustan M, Trans. IchemE, A-74, 406 (1996)
Hihn JY, Gonthier Y, Bernis A, Rec. Prog. En Genie des Proc., 6, 11 (1992)
Hyndman CL, Guy C, Int. Chem. Eng., 73, 302 (1995)
Koh JS, Chang HN, HWAHAK KONGHAK, 17(4), 281 (1979)
Krishnaiah K, Guru S, Sekar V, Chem. Eng. J., 51, 109 (1993)
Lee SH, Choi HS, Park YT, Doh KS, HWAHAK KONGHAK, 27(4), 472 (1989)
Lee SLP, De Lasa HI, AIChE J., 33, 1359 (1987)
Legile P, Menard C, Laurent C, Thomas D, Bernis A, Entropie, 143, 11 (1988)
McCabe WL, Smith JC, Harriott P, "Unit Operations of Chemical Engineering 5th ed.," McGraw-Hill, New York (1993)
Nikolov L, Karamanev D, Can. J. Chem. Eng., 65, 214 (1987)
Roustan M, Bastoul D, Capdeville B, "Influence of the Hydrodynamic Behavirour of a Three Phase Fluidized Bed for Effluent Treatment. 3rd," Int. Conf. on Bioreactor and Bioprocess Fluid Dynamics, Cambridge, UK (1993)
Wallis G, "One-Dimensional Two Phase Flow," McGraw-Hill, New York (1969)
Wild G, Saberian M, Schwartz JL, Charpentier JC, Enrtopie, 106, 3 (1982)
Yang DC, Kim JH, Yoo YJ, HWAHAK KONGHAK, 35(1), 129 (1997)
Yoon HH, Ghim YS, Chang HN, Kim YJ, Rhee JS, HWAHAK KONGHAK, 20(4), 293 (1982)
