Liquid hold-up and backmixing in cocurrent upflow three-phase fixed-bed reactors

Liquid-phase hydrodynamics is studied in a three-phase fixed bed with cocurrent upflow of gas and liquid. Residence-time distributions are measured to determine liquid hold-up and backmixing using different liquids and glass beads of two sizes. Two types of correlations are tested for liquid saturat...

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Autor principal: Cassanello, M.
Otros Autores: Martínez, O., Cukierman, A.L
Formato: Acta de conferencia Capítulo de libro
Lenguaje:Inglés
Publicado: Elsevier Sci Ltd 1998
Acceso en línea:Registro en Scopus
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024 7 |2 scopus  |a 2-s2.0-0032489077 
040 |a Scopus  |b spa  |c AR-BaUEN  |d AR-BaUEN 
030 |a CESCA 
100 1 |a Cassanello, M. 
245 1 0 |a Liquid hold-up and backmixing in cocurrent upflow three-phase fixed-bed reactors 
260 |b Elsevier Sci Ltd  |c 1998 
270 1 0 |m Cukierman, A.L.; PINMATE, Departmento de Industrias, Fac. de Ciencias Exactas/Naturales, 1428 Buenos Aires, Argentina; email: analea@di.fcenuba.ar 
506 |2 openaire  |e Política editorial 
504 |a Achwal, S.K., Stepanek, J.B., Holdup profiles in packed beds (1976) Chem. Engng. J., 12, pp. 69-75 
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504 |a Bezdenezhnykh, A.A., Taranov, V.I., Orlov, A.P., Longitudinal mixing of an upflow gas-liquid stream on a fixed-bed catalytic reactor (1971) Teor. Osn. Khim. Tekhnol., 5, pp. 163-167 
504 |a Cassanello, M.C., Martínez, O.M., Cukierman, A.L., Effect of the liquid axial dispersion on the behavior of fixed bed three phase reactors (1992) Chem. Engng Sci., 47, pp. 3331-3338 
504 |a Cassanello, M.C., (1992) Caracterización Fluidodinámica de Reactores Trifásicos de Lecho Fijo, , Ph.D. thesis, Universidad de Buenos Aires, Buenos Aires, Argentina 
504 |a Collier, J.G., Thome, J.R., (1994) Convective Boiling and Condensation. 3rd Edn., , Oxford University Press, Oxford, U.K 
504 |a Chung, S.F., Wen, C.Y., Longitudinal dispersion of liquid flowing through fixed and fluidized beds (1968) A.I.Ch.E. J., 14, p. 857 
504 |a Deckwer, W.-D., Schumpe, A., Improved tools for bubble column reactor design and scale-up (1993) Chem. Engng Sci., 48, pp. 889-911 
504 |a Fukushima, S., Kusaka, K., Gas-liquid mass transfer and hidrodynamic flow regions in packed columns with cocurrent upward flow (1979) J. Chem. Engng Japan, 12, pp. 296-301 
504 |a Van Gelder, K.B., Westerterp, K.R., Residence time distribution and hold-up in a cocurrent upflow packed bed reactor at elevated pressure (1990) Chem. Engng Technol., 13, pp. 27-40 
504 |a Gianetto, A., Silveston, P.L., (1986) Multiphase Chemical Reactors, , Hemisphere, Washington, D.C., U.S.A 
504 |a Von Heilmann, W., Hofmann, H., Zur hydrodynamik zweiphasig durchstromter schüttschichten (1969) Proceedings of the IV European Symposium on Chemical Reactor Engineering, pp. 169-182. , Brussels, Belgium 
504 |a Hinze, J.O., Fundamentals of the hydrodynamic mechanism of splitting in dispersion processes (1955) A.I.Ch.E. J., 1, pp. 289-295 
504 |a Lamine, A.S., Colli Serrano, M.T., Wild, G., Hydrodynamics and heat transfer in packed bed with cocurrent upflow (1992) Chem. Engng Sci., 47, pp. 3493-3500 
504 |a Larachi, F., Laurent, A., Wild, G., Midoux, N., Some experimental liquid saturation results in fixed-bed reactors operated under elevated pressure in cocurrent upflow and downflow of the gas and the liquid (1991) Ind. Engng Chem. Res., 30, pp. 2404-2410 
504 |a Larachi, F., Wild, G., Laurent, A., Midoux, N., Influence of gas density on the hydrodynamics of cocurrent gas-liquid upflow fixed bed reactors (1994) Ind. Engng Chem. Res., 33, pp. 519-525 
504 |a Lara-Márquez, A., Les réacteurs à lit fixe à co-courant vers le haut de gaz et de liquide (1992) Etude du Transfert de Matière Gaz-liquide, , Ph.D. thesis, INPL, Nancy, France 
504 |a Lara-Márquez, A., Larachi, F., Wild, G., Laurent, A., Mass transfer characteristics of fixed beds with cocurrent upflow and downflow. A special reference to the effect of pressure (1992) Chem. Engng Sci., 47, pp. 3485-3492 
504 |a Martínez, O.M., Cassanello, M.C., Cukierman, A.L., Three-phase fixed-bed catalytic reactors application to hydrotreatment processes (1994) Trends in Chemical Engineering, 2, pp. 393-453. , ed. Council of Scientific Research Integration, Research Trends 
504 |a Ragaini, V., Tine, C., Upflow reactor for selective hydrogenation of pyrolysis gasoline. A comparative study with respect to downflow (1984) Appl. Catal., 10, pp. 43-51 
504 |a Ramachandran, P.A., Chaudhari, R.V., (1983) Three Phase Catalytic Reactors, , Gordon and Breach, London, U.K 
504 |a Rice, R.G., Littlefield, M.A., Dispersion coefficients for ideal bubbly flow in truly vertical bubble columns (1987) Chem. Engng Sci., 42, pp. 2045-2053 
504 |a Saada, M.Y., Fluid mechanics of cocurrent two-phase flow in packed-bed: Pressure drop and liquid hold-up studies (1975) Period. Polytech. Chem. Engng, 19, pp. 317-337 
504 |a Saberian-Broudjenni, M., Wild, G., Charpentier, J.C., Fortin, Y., Euzen, J.P., Patoux, R., Contribution to the hydrodynamic study of gas-liquid-solid fluidized bed reactors (1987) Int. Chem. Engng, 27, pp. 423-440 
504 |a Stiegel, G.J., Shah, Y.T., Backmixing and liquid hold-up in a gas-liquid cocurrent upflow packed column (1977) Ind. Engng Chem. Proc. Des. Dev., 16, pp. 37-43 
504 |a Thanos, A.M., Galtier, P.A., Papayannakos, N.G., Liquid flow non-idealities and hold-up in a pilot scale packed bed reactor with cocurrent gas-liquid upflow (1996) Chem. Engng Sci., 51, pp. 2709-2714 
504 |a Turpin, J.L., Huntington, R.L., Prediction of pressure drop for two-phase, two-component, concurrent flow in packed beds (1967) A.I.Ch.E. J., 13, pp. 1196-1202 
504 |a Wen, C.Y., Fan, L.T., (1975) Models for Flow Systems and Chemical Reactors, , M. Dekker Inc., New York 
504 |a Wild, G., Larachi, F., Charpentier, J.-C., Heat and mass transfer in gas-liquid-solid fixed bed reactors (1992) Heat and Mass Transfer in Porous Media, p. 616. , eds M. Quintard and M. Todorovic, Elsevier, Amsterdam 
504 |a De Wind, M., Plantenga, F.L., Heinerman, J.J.L., Homan Free, H.W., Upflow versus downflow testing of hydrotreating catalysts (1988) Appl. Catal., 43, pp. 239-252 
504 |a Yang, X.L., (1989) Etudes Hydrodynamiques des Réacteurs à Lit Fixe Avec Écoulement Co-courant Ascendant de Gaz et de Liquide, , Ph.D. thesis, The Université Pierre et Marie Curie, Paris VI et ENSPM, Rueil-Malmaison, France 
504 |a Yang, X.L., Wild, G., Euzen, J.P., Etude de la rétention liquide dans les réacteurs à lit fixe avec écoulement ascendant de gaz et de liquide (1989) Entropie, 150, pp. 17-28 
520 3 |a Liquid-phase hydrodynamics is studied in a three-phase fixed bed with cocurrent upflow of gas and liquid. Residence-time distributions are measured to determine liquid hold-up and backmixing using different liquids and glass beads of two sizes. Two types of correlations are tested for liquid saturation. Correlations based on the drift flux concept are found to account for experimental results. Liquid mixing is described in terms of the axial dispersion model. A close relation between the axial dispersion coefficient and the bubbles sizes estimated using the theory of fluid emulsions is found. Hence, a new type of correlation is proposed to estimate axial dispersion coefficients in this type of reactors. This correlation considers the influences on the Peclet number of the liquid Reynolds number and the two-phase flow dissipation power rate, which would determine bubbles sizes. Liquid-phase hydrodynamics is studied in a three-phase fixed bed with cocurrent upflow of gas and liquid. Residence-time distributions are measured to determine liquid hold-up and backmixing using different liquids and glass beads of two sizes. Two types of correlations are tested for liquid saturation. Correlations based on the drift flux concept are found to account for experimental results. Liquid mixing is described in terms of the axial dispersion model. A close relation between the axial dispersion coefficient and the bubbles sizes estimated using the theory of fluid emulsions is found. Hence, a new type of correlation is proposed to estimate axial dispersion coefficients in this type of reactors. This correlation considers the influences on the Peclet number of the liquid Reynolds number and the two-phase flow dissipation power rate, which would determine bubbles sizes.  |l eng 
536 |a Detalles de la financiación: Universidad Nacional de La Plata 
536 |a Detalles de la financiación: Consejo Nacional de Investigaciones Científicas y Técnicas 
536 |a Detalles de la financiación: Financial support of Universidad de Buenos Aires, Universidad de La Plata and of Consejo Nacional de Investigaciones Cientı́ficas y Técnicas (CONICET), Argentina are gratefully acknowledged. 
593 |a Fac. de Cie. Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, 1428 Buenos Aires, Argentina 
593 |a Depto. de Ing. Química, Facultad de Ingeniería, Universidad Nacional de La Plata, Calle 1 esq. 47, 1900, La Plata, Argentina 
593 |a CINDECA, Universidad Nacional de La Plata, CONICET, Calle 47, No. 257, CC 59, 1900, La Plata, Argentina 
690 1 0 |a BACK-MIXING 
690 1 0 |a FIXED-BEDS 
690 1 0 |a HYDRODYNAMICS 
690 1 0 |a LIQUID HOLDUP 
690 1 0 |a THREE-PHASE REACTORS 
690 1 0 |a BUBBLES (IN FLUIDS) 
690 1 0 |a HYDRODYNAMICS 
690 1 0 |a MATHEMATICAL MODELS 
690 1 0 |a MIXING 
690 1 0 |a REYNOLDS NUMBER 
690 1 0 |a TWO PHASE FLOW 
690 1 0 |a AXIAL DISPERSION MODEL 
690 1 0 |a BACKMIXING 
690 1 0 |a FIXED BED REACTORS 
690 1 0 |a LIQUID HOLD UP 
690 1 0 |a CHEMICAL REACTORS 
690 1 0 |a HYDRODYNAMICS 
690 1 0 |a MIXING 
690 1 0 |a REACTOR 
690 1 0 |a THREE-PHASE FLOW 
700 1 |a Martínez, O. 
700 1 |a Cukierman, A.L. 
711 2 |c Exeter, United Kingdom 
773 0 |d Elsevier Sci Ltd, 1998  |g v. 53  |h pp. 1015-1025  |k n. 5  |p Chem. Eng. Sci.  |x 00092509  |w (AR-BaUEN)CENRE-291  |t Chemical Engineering Science 
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856 4 0 |u https://hdl.handle.net/20.500.12110/paper_00092509_v53_n5_p1015_Cassanello  |y Handle 
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