Analysis of the fluid-bed stability of FCC catalysts at high temperature in terms of bed elasticity--颗粒学报PARTICUOLOGY

Lettieri, P., & Mazzei, L. (2008). Analysis of the fluid-bed stability of FCC catalysts at high temperature in terms of bed elasticity. Selected papers from 1st UK-China Particle Technology Forum, 6(1), 30–37. https://doi.org/10.1016/j.cpart.2007.10.003

Analysis of the fluid-bed stability of FCC catalysts at high temperature in terms of bed elasticity

Paola Lettieri^*, Luca Mazzei

Department of Chemical Engineering, University College London, Torrington Place, London WC1E 7JE, UK

10.1016/j.cpart.2007.10.003

Volume 6, Issue 1, February 2008, Pages 30-37

Received 12 June 2007, Accepted 8 October 2007, Available online 7 March 2008.

E-mail: p.lettieri@ucl.ac.uk

Highlights

Abstract

The effect of temperature on the fluid-bed stability of three FCC catalysts has been analyzed through considerations on fluid-bed elasticity. Experimental findings on the effect of temperature on the elasticity modulus at minimum bubbling conditions, (E)_mb, were analyzed using the hydrodynamic fluid-bed stability model developed by Foscolo and Gibilaro (1984) and adopting the interparticle-forces-based stability criterion developed by Mutsers and Rietema (1977). For both models, the parameters which control changes in (E)_mb with temperature are discussed, in order to establish the origin of the fluid-bed elasticity and analyze the ability of these models to discriminate between the relative importance of the hydrodynamic and interparticle forces on the stability of the fluidized catalysts.

Graphical abstract

Keywords

Fluidization; FCC catalysts; High temperature; StabilityBed elasticity

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