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3-dimensional particle tracking in a fluid-dynamically downscaled fluidized bed using magneto resistive sensors

Erik Sette (Institutionen för energi och miljö, Energiteknik) ; Anna Köhler (Institutionen för energi och miljö, Energiteknik) ; David Pallares (Institutionen för energi och miljö, Energiteknik) ; Filip Johnsson (Institutionen för energi och miljö, Energiteknik)
The 8th International Symposium on Coal Combustion (2015)
[Konferensbidrag, övrigt]

This paper presents a measurement technique for continuous tracking of particles in 3-dimensional bubbling fluidized beds operated according to scaling laws. By applying Glicksman’s full set of scaling laws to both bulk solids and tracer particle the bed is assumed to be fluid-dynamically similar to a combustor operated at 900 °C with the tracer particle corresponding to a fuel particle with properties similar to anthracite coal. Two different gas distributors with varying pressure drop are used to investigate the influence of bed design on fuel mixing. Flow structures formed around rising gas bubbles, so called bubble paths, are identified and the tracer particle traverses the entire bed for a gas distributor yielding a high pressure drop. For a gas distributor yielding a low pressure drop flow structures are less pronounced and the tracer particle is not circulating the entire bed.

Nyckelord: 3-dimensional tracking, fluid dynamically downscaling, bubbling fluidized bed

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Denna post skapades 2015-11-27.
CPL Pubid: 226486


Institutioner (Chalmers)

Institutionen för energi och miljö, Energiteknik (2005-2017)


Termisk energiteknik
Kemisk energiteknik

Chalmers infrastruktur