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Effect of Process Conditions on Fluidization

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Fluidized-Bed Reactors: Processes and Operating Conditions

Part of the book series: Particle Technology Series ((POTS,volume 26))

Abstract

Previous chapters have illustrated the variety of fluidized-bed industrial applications and the importance of the process conditions on their operation. This chapter reviews experimental and theoretical studies on the influence of process conditions (temperature, pressure, presence of liquid, fines and fines size distribution) on the fluidization quality of gas-solid fluidized-bed reactors. The chapter begins with an overview of the effect of process conditions on fluidization highlighting the role of the hydrodynamic and interparticle forces on fluidized-bed behaviour. A brief review of the interparticle forces is reported to explain the foundation for the understanding of the factors responsible for the changes in fluidization at process conditions. Hence, the chapter discusses specifically the effect of temperature, pressure and other special conditions in the fluid bed, at minimum fluidization conditions, in the expanded fluid bed and at minimum bubbling conditions, showing how correlations and models established at ambient temperature and pressure may lead to misleading predictions at super- ambient conditions.

We dedicate this chapter to the late Dr. David Newton (formerly Head of the Fluidization Group at BP Chemicals Sunbury), a close colleague and friend, who contributed significantly to the work described herein.

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  1. Department of Chemical Engineering, University College London, London, UK

    John G. Yates & Paola Lettieri

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  1. John G. Yates
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  2. Paola Lettieri
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Correspondence to John G. Yates .

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Yates, J.G., Lettieri, P. (2016). Effect of Process Conditions on Fluidization. In: Fluidized-Bed Reactors: Processes and Operating Conditions. Particle Technology Series, vol 26. Springer, Cham. https://doi.org/10.1007/978-3-319-39593-7_5

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