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Digital image analysis of gas bypassing and mixing in gas-fluidized bed: effect of particle shape

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dc.contributor.author Mohanta, Hare Krishna
dc.contributor.author Goyal, Navneet
dc.contributor.author Sande, Priya Christina
dc.contributor.author Sharma, Arvind Kumar
dc.date.accessioned 2025-04-09T04:35:19Z
dc.date.available 2025-04-09T04:35:19Z
dc.date.issued 2024-10
dc.identifier.uri https://aiche.onlinelibrary.wiley.com/doi/10.1002/aic.18633?af=R
dc.identifier.uri http://dspace.bits-pilani.ac.in:8080/jspui/handle/123456789/18578
dc.description.abstract The study investigates effect of particle shape on gas bypassing and mixing of gas-fluidized Geldart A particles. A shallow fluidized bed (FB), configured at benchscale, was used with digital image analysis (DIA) for the investigation. The extent of scatter of tracer particles throughout the bed was assessed from DIA images of defluidized powder. A novel method employing Jupyter notebook software, was used to directly determine Mixing Index from digital images. Remarkably, platelet-shaped China clay powder displayed the best mixing characteristics (Mixing Index: 0.79) with no significant bypassing. Angular shaped Quartz displayed moderate mixing (Mixing Index: 0.67), but high bypassing (Bypassing Index: 0.75). Contrary to conventional assumptions, spherical-shaped diatomite exhibited poor mixing (Mixing Index: 0.61) with the highest bypassing (Bypassing Index: 0.82). Platelet particles performed well even with fines removal. Most likely, particle shape significantly influenced the number of available particle contact points, tracer migration, and traceronparticle binding. en_US
dc.language.iso en en_US
dc.publisher Wiley en_US
dc.subject Chemical engineering en_US
dc.subject Digital image analysis (DIA) en_US
dc.subject Gas-fluidized en_US
dc.subject Particle shape effects en_US
dc.title Digital image analysis of gas bypassing and mixing in gas-fluidized bed: effect of particle shape en_US
dc.type Article en_US


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