Usability of ECT for quantitative and qualitative characterization of trickle-bed flow dynamics subject to filtration conditions
| Autor: | Faïçal Larachi, David Edouard, Cristian Tibirna, André Fortin |
|---|---|
| Přispěvatelé: | Laboratoire d'automatique et de génie des procédés (LAGEP), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-École Supérieure Chimie Physique Électronique de Lyon-Centre National de la Recherche Scientifique (CNRS), Groupe Interdisciplinaire de Recherche en Éléments Finis [Québec] (GIREF), Université Laval [Québec] (ULaval)-Centre de Recherches Mathématiques [Montréal] (CRM), Université de Montréal (UdeM)-Université de Montréal (UdeM) |
| Jazyk: | angličtina |
| Rok vydání: | 2006 |
| Předmět: |
Engineering
General Chemical Engineering Flow (psychology) Energy Engineering and Power Technology 02 engineering and technology Iterative reconstruction Electrical capacitance tomography Industrial and Manufacturing Engineering law.invention [SPI]Engineering Sciences [physics] [CHIM.GENI]Chemical Sciences/Chemical engineering 020401 chemical engineering law [CHIM]Chemical Sciences [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering 0204 chemical engineering Image resolution Simulation Filtration ComputingMilieux_MISCELLANEOUS business.industry Process Chemistry and Technology General Chemistry Mechanics Inverse problem Trickle-bed reactor 021001 nanoscience & nanotechnology Tomography 0210 nano-technology business |
| Zdroj: | Chemical Engineering and Processing: Process Intensification Chemical Engineering and Processing: Process Intensification, Elsevier, 2006, 45 (7), pp.538-545. ⟨10.1016/j.cep.2005.10.010⟩ |
| ISSN: | 0255-2701 |
| DOI: | 10.1016/j.cep.2005.10.010⟩ |
| Popis: | This work investigates the pros and cons related to the use of the electrical capacitance tomography (ECT) technique for the imaging and the quantitative characterization of flow dynamics that develop in a four-phase trickle-bed reactor. The use of ECT in non-invasive imaging is increasing continuously owing to its low cost and technical convenience when compared to other tomography methods, such as nuclear ionizing and non-ionizing tomographies. Yet, ECT is plagued by low spatial resolution, lack of multi-modality and the need for solving a very difficult inverse problem for image reconstruction. The flow dynamics that establish in a four-phase trickle-bed system (consisting of flowing gas, flowing dilute suspension consisting of a liquid and micron-range fines, as well as a static solid macroporous bed) are very complex and prone to instability. This work sets to determine in which measure ECT can be used for capturing representations of steady-state flow features as well as unsteady situations (like plug formation and preferential flowing) either simulated or measured on a lab-scale column. Many numerical algorithms for image reconstruction are investigated in the light of the needs imposed by the characteristics of the trickle-bed reactor. |
| Databáze: | OpenAIRE |
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