Solids mixing in gas-liquid-solid fluidized beds: Experiments and modelling
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...
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1996
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00092509_v51_n10_p2011_Cassanello http://hdl.handle.net/20.500.12110/paper_00092509_v51_n10_p2011_Cassanello |
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paper:paper_00092509_v51_n10_p2011_Cassanello2023-06-08T14:33:32Z Solids mixing in gas-liquid-solid fluidized beds: Experiments and modelling 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 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. 1996 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00092509_v51_n10_p2011_Cassanello http://hdl.handle.net/20.500.12110/paper_00092509_v51_n10_p2011_Cassanello |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
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 |
| spellingShingle |
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 Solids mixing in gas-liquid-solid fluidized beds: Experiments and modelling |
| topic_facet |
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 |
| description |
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. |
| title |
Solids mixing in gas-liquid-solid fluidized beds: Experiments and modelling |
| title_short |
Solids mixing in gas-liquid-solid fluidized beds: Experiments and modelling |
| title_full |
Solids mixing in gas-liquid-solid fluidized beds: Experiments and modelling |
| title_fullStr |
Solids mixing in gas-liquid-solid fluidized beds: Experiments and modelling |
| title_full_unstemmed |
Solids mixing in gas-liquid-solid fluidized beds: Experiments and modelling |
| title_sort |
solids mixing in gas-liquid-solid fluidized beds: experiments and modelling |
| publishDate |
1996 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00092509_v51_n10_p2011_Cassanello http://hdl.handle.net/20.500.12110/paper_00092509_v51_n10_p2011_Cassanello |
| _version_ |
1768542109881597952 |