Abstract:
Mixing in monosized particles and binary mixtures of solids in three-phase fluidized beds is investigated by means of a non-invasive Radioactive Particle Tracking technique (RPT). Pulses of particles at different column heights are constructed from the trajectory of a single radioactive tracer whose motion is tracked for several hours. For each pulse released, number distributions of particles in the axial direction are thus obtained for each instant of time from injections at different axial positions in the reactor. Using this information, axial mixing times for the solids are measured for the experimental conditions studied. A one-dimensional two-zone model based on the three-phase counter-current backmixing model used for gas-solid fluidization (Gwyn et al., 1970) is proposed and solved for these conditions to calculate solids axial number distributions and mixing times. Agreement between experimental and predicted results is satisfactory.
Registro:
Documento: |
Artículo
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Título: | Solids mixing in gas-liquid-solid fluidized beds: Experiments and modelling |
Autor: | Cassanello, M.; Larachi, F.; Guy, C.; Chaouki, J. |
Filiación: | Department of Chemical Engineering, Ecl. Polytech. de Montréal, Station Centre-Ville, Montréal, Que. H3C 3A7, Canada PINMATE, Departamento de Industrias, 1428 Ciudad Universitaria, Buenos Aires, Argentina Department of Chemical Engineering, Laval University, Sainte-Foy, Que. G1K 7P4, Canada
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Palabras clave: | Binary mixtures; Calculations; Chemical reactors; Fluidization; Mathematical models; Mixing; Particles (particulate matter); Radioactive tracers; Solids; Axial number distributions; Dirac injections; Radioactive particle tracking technique; Three phase counter current back mixing model; Fluidized beds; Fluidized Beds; Mixing; Solids |
Año: | 1996
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Volumen: | 51
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Número: | 10
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Página de inicio: | 2011
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Página de fin: | 2020
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DOI: |
http://dx.doi.org/10.1016/0009-2509(96)00058-9 |
Título revista: | Chemical Engineering Science
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Título revista abreviado: | Chem. Eng. Sci.
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ISSN: | 00092509
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CODEN: | CESCA
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Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00092509_v51_n10_p2011_Cassanello |
Referencias:
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Citas:
---------- APA ----------
Cassanello, M., Larachi, F., Guy, C. & Chaouki, J.
(1996)
. Solids mixing in gas-liquid-solid fluidized beds: Experiments and modelling. Chemical Engineering Science, 51(10), 2011-2020.
http://dx.doi.org/10.1016/0009-2509(96)00058-9---------- CHICAGO ----------
Cassanello, M., Larachi, F., Guy, C., Chaouki, J.
"Solids mixing in gas-liquid-solid fluidized beds: Experiments and modelling"
. Chemical Engineering Science 51, no. 10
(1996) : 2011-2020.
http://dx.doi.org/10.1016/0009-2509(96)00058-9---------- MLA ----------
Cassanello, M., Larachi, F., Guy, C., Chaouki, J.
"Solids mixing in gas-liquid-solid fluidized beds: Experiments and modelling"
. Chemical Engineering Science, vol. 51, no. 10, 1996, pp. 2011-2020.
http://dx.doi.org/10.1016/0009-2509(96)00058-9---------- VANCOUVER ----------
Cassanello, M., Larachi, F., Guy, C., Chaouki, J. Solids mixing in gas-liquid-solid fluidized beds: Experiments and modelling. Chem. Eng. Sci. 1996;51(10):2011-2020.
http://dx.doi.org/10.1016/0009-2509(96)00058-9