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© 2013

Fluidization of Fine Powders

Cohesive versus Dynamical Aggregation

  • Illustrates the state of the art on cohesive versus dynamical aggregation in fluidized beds

  • Provides a clear introduction to the fluidization of powders

  • Offers an insight into the most recent methods and developments for fluidization

  • An optimal balance between theory and applied topics

Book

Part of the Particle Technology Series book series (POTS, volume 18)

Table of contents

  1. Front Matter
    Pages I-XV
  2. José Manuel Valverde Millán
    Pages 7-12
  3. José Manuel Valverde Millán
    Pages 13-22
  4. José Manuel Valverde Millán
    Pages 23-28
  5. José Manuel Valverde Millán
    Pages 41-46
  6. José Manuel Valverde Millán
    Pages 47-54
  7. José Manuel Valverde Millán
    Pages 55-64
  8. José Manuel Valverde Millán
    Pages 65-73
  9. José Manuel Valverde Millán
    Pages 85-97
  10. José Manuel Valverde Millán
    Pages 121-134

About this book

Introduction

This book will be mainly devoted to demonstrate the rich phenomenology exhibited by fine powders when they are fluidized by a gas flow. Fine powder cohesiveness leads to poor flowability, clumping, difficulty in fluidizing, irregular avalanching behavior, etc. Despite all the inconveniences, fine powder processes pervade the chemical, pharmaceutical, agricultural and mining industries among others. The author in this book analyzes the mechanism by which interparticle adhesive forces are reduced by means of surface additives. Different techniques have been developed in the last years to assist fluidization by helping the gas flow to mobilize and break cohesive aggregates, which help to homogenize fluidization. As reviewed in this book, the use of these techniques may have a relevant impact on novel processes based on fluidized beds of fine powder and with relevant applications on leading edge technologies such as Atomic Layer Deposition on nanoparticles and CO2 capture by gas-fluidized beds of adsorbent powders. The study of fluidized beds has a marked interdisciplinary character.  This book is thus intended for academic and industrial researchers in applied physics, mechanical, chemical, and environmental engineering, who are interested in the special characteristics of fine powders.

Keywords

ALD of Nanoparticles Cohesive Powders Fluidization Assistance Techniques Fluidized Bed Reactors Fluidized Nanopowders Geldart’s Diagram Interparticle Attraction Powder Technology Industrial Applications Richardson and Zaki Equation Van der Waals Forces

Authors and affiliations

  1. 1.Facultad de FisicaUniversity of SevillaSevillaSpain

About the authors

José Manuel Valverde Millán is Assistant Professor in the Department of Electronics and Electromagnetism, Faculty of Physics, University of Seville. He is an Associate Editor of the Journal of Nanoparticle Research. His research activity is interdisciplinary and lies between engineering and fundamental physics. A major contribution of his studies was the development of a novel powder tester, which earned him an award by Xerox Co.. He also received the Outstanding Researcher Award by the International Iberian Nanotechnology Laboratory- INL. He has authored 73 journal papers, 4 educational monographs, 5 patents.  He has carried out detailed studies on the fluidization and mechanical properties of fine powders. This work is aimed at formulating models for a deeper understanding of the special behaviour of powder systems. A main subject of his studies has been the development of synthetic powders with enhanced CO2 capture efficiency.

Bibliographic information

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