Experimental Study of Defluidization by Continuous Water Injection into a Gas-Solid Fluidized Bed Using Pressure Fluctuation Measurements

Flavia Tramontin Silveira Schaffka; Giulia Kaminski Tramontin; Maria Regina Parise

doi:10.4028/www.scientific.net/AMM.798.160

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 798Experimental Study of Defluidization by Continuous...

Experimental Study of Defluidization by Continuous Water Injection into a Gas-Solid Fluidized Bed Using Pressure Fluctuation Measurements

Abstract:

This work studies the induced defluidization condition of a gas-solid fluidized bed system when distilled water is continuously injected into the bed of particles. Experimental tests carried out to different water flow rates were analyzed through a technique based on pressure signals measurements. The bed material used was glass beads (Geldart D particles), with mean diameter of 1.55 mm. Experiments were performed in an acrylic Plexiglas tube with 0.11m in inner diameter and 1.0 m in height, with the bed led from an initially bubbling regime up to attain a fixed bed condition. Pressure fluctuations were acquired and processed using LabVIEW 10.0^TM software. Results showed that the defluidization condition promoted by water injection in a bubbling fluidized bed can be efficiently identified using pressure fluctuation measurements.

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Periodical:

Applied Mechanics and Materials (Volume 798)

Pages:

160-164

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.798.160

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Online since:

October 2015

Authors:

Flavia Tramontin Silveira Schaffka*, Giulia Kaminski Tramontin, Maria Regina Parise

Keywords:

Defluidization, Gas-Solid Fluidized Bed, Gaussian Spectral Pressure Distribution, Pressure Fluctuations

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