Abstract
Gas viscosity plays a fundamental role on enhancing the fluid-like behavior of gas-fluidized beds of fine powders and an increase of gas viscosity may even lead to a suppression of the bubbling regime as seen in a previous chapter. In this chapter, further experimental observations are reviewed on the effect of gas viscosity on the macroscopic and mesoscopic behavior of gas-fluidized beds ruled by dynamic aggregation. Nevertheless, the size of dynamic aggregates, as predicted by theory, is not affected by gas viscosity. This is confirmed by means of direct visualization experiments of aggregates and aggregate size estimations from bed expansion data.
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References
Valverde, J.M., Castellanos, A.: Types of gas fluidization of cohesive granular materials. Phys. Rev. E 75(3), 031306 (2007). doi:10.1103/PhysRevE.75.031306
Valverde, J.M., Quintanilla, M.A.S., Castellanos, A., Mills, P.: Experimental study on the dynamics of gas-fluidized beds. Phys. Rev. E 67, 016303 (2003)
Valverde, J.M., Castellanos, A.: High viscosity gas fluidization of fine particles: An extended window of quasi-homogeneous flow. Phys. Rev. E 74, 021302 (2006)
Valverde, J.M., Quintanilla, M.A.S., Castellanos, A., Lepek, D., Quevedo, J., Dave, R.N., Pfeffer, R.: Fluidization of fine and ultrafine particles using nitrogen and neon as fluidizing gases. AIChE J. 54, 86–103 (2008)
Valverde, J.M., Castellanos, A., Quintanilla, M.A.S.: The memory of granular materials. Contemp. Phys. 44, 389–399 (2003)
Duru, P., Guazzelli, E.: Experimental investigation of the secondary instability of liquid-fluidized beds and the formation of bubbles. J. Fluid Mech. 470, 359–382 (2002)
Pfeffer, C.N.R., Dave, R.N., Sundaresan, S.: Aerated vibrofluidization of silica nanoparticles. AIChE J. 50, 1776–1785 (2004)
Rietema, K.: The Dynamics of Fine Powders. Elsevier, London (1991)
Rapagna, S., Foscolo, P.U., Gibilaro, L.G.: The influence of temperature on the quality of fluidization. Int. J. Multiph. Flow 20, 305–313 (1994)
Blamey, J., Anthony, E.J., Wang, J., Fennell, P.S.: The calcium looping cycle for large-scale CO2 capture. Prog. Energ. Combust. Sci. 36(2), 260–279 (2010). doi:10.1016/j.pecs.2009.10.001
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Valverde Millán, J.M. (2013). Effect of Gas Viscosity on the Fluidization Behavior of Fine Powders. In: Fluidization of Fine Powders. Particle Technology Series, vol 18. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-5587-1_10
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DOI: https://doi.org/10.1007/978-94-007-5587-1_10
Publisher Name: Springer, Dordrecht
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