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Chemical Engineering Journal
Article . 2019 . Peer-reviewed
License: Elsevier TDM
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Implementation of a borescopic technique in a conical spouted bed for tracking spherical and irregular particles

Authors: Aitor Atxutegi; Mikel Tellabide; Gartzen Lopez; Roberto Aguado; Javier Bilbao; Martin Olazar;

Implementation of a borescopic technique in a conical spouted bed for tracking spherical and irregular particles

Abstract

[ES] Se ha desarrollado y validado una metodología basada en la técnica boroscópica para seguir el movimiento del sólido dentro de un reactor spouted bed cónico. El procedimiento desarrollado y perfeccionado permite monitorizar el flujo óptico descendente y ascendente de partículas tanto esféricas como irregulares en la zona anular (zona densa) y en el spout (zona diluida). Para la grabación se utilizó una cámara de alta velocidad (de hasta 16.000 fps) equipada con una fuente de luz continua de fibra óptica, y se aplicó a la imagen un algoritmo de tratamiento de imágenes modificado y adaptado para tener en cuenta las diferencias en la forma de las partículas y la densidad del lecho (diluido o denso). El procedimiento permite recopilar información sobre la velocidad de partículas en un amplio rango de tamaños, desde unos pocos milímetros (dp=7 mm) hasta micrómetros (dp=93 μm). [EN] A methodology based on the borescopic technique has been developed and validated for tracking solid move- ment within a conical spouted bed. The procedure developed and fine-tuned allows monitoring the descending and ascending optical flow of both spherical and irregular particles in the annulus (dense zone) and spout (dilute zone) in the bed. A high speed camera (up to 16,000 fps) fitted with a fiber optic continuous light source was used for recording, and an image treatment algorithm modified and adapted to account for differences in particle shape and bed density (dilute or dense) was applied to the registered data. The procedure allows gathering information on the velocity of particles in a wide range of sizes, from a few millimeters ( dp=7mm) to mi- crometers (dp=93μm) Este trabajo se ha realizado con el apoyo financiero de Ministerio de Economía y Competitividad de España (Proyectos CTQ2016-75535-R y RTI2018-098283-J-I00), los Fondos Europeos de Desarrollo Regional (FEDER) y la Universidad del País Vasco UPV/EHU (US16/21). Aitor Atxutegi agradece su beca de doctorado de la Universidad del País Vasco UPV/EHU (PFI15-2017). Mikel Tellabide agradece al Ministerio de Educación, Cultura y Deporte de España su beca de doctorado (FPU14/05814). This work has been carried out with the financial support from Spain’s Ministry of Economy and Competitiveness (Projects CTQ2016-75535-R and RTI2018-098283-J-I00), the European Regional Development Funds (ERDF) and the University of the Basque Country UPV/EHU (US16/21). Aitor Atxutegi is grateful for his Ph.D. grant from the University of the Basque Country UPV/EHU (PFI15-2017). Mikel Tellabide thanks Spain's Ministry of Education, Culture and Sport for his Ph.D. grant (FPU14/05814)

Country
Spain
Keywords

borescopic high speed PIV, image treatment, conical spouted bed, particle tracking

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
13
Top 10%
Average
Top 10%
Green