1. Home
  2. Food–Chem–Bio industry processes
  3. Unit operations. Chemical reaction engineering
  4. Gas-Solid Fluidization ;Fine particles and nanoparticles

  5. Techniques for improving the fluidization of cohesive powders

Article | REF: J4101 V1

Gas-Solid Fluidization ;Fine particles and nanoparticles

Authors: Mikel LETURIA, Khashayar SALEH

Publication date: June 10, 2016

You do not have access to this resource.
Click here to request your free trial access!

Already subscribed? Log in!

Français

6. Techniques for improving the fluidization of cohesive powders

As explained above, cohesive powders can sometimes be fluidized in the form of agglomerates. In most cases, however, fluidization of this type of powder can pose several problems:

  • particle entrainment and elutriation: the aeration rate required to form and fluidize agglomerates is much higher than the minimum fluidization rate for individual particles. The result is significant elutriation, even with APF fluidization;

  • Deterioration in material and heat transfer: although agglomeration enables certain powders to be fluidized, it also leads to a reduction in the specific surface area of available solids and a deterioration in material and heat transfer;

  • defluidization of a large part of the layer (at the bottom of the bed);

  • fluidization impossible:...

You do not have access to this resource.

Exclusive to subscribers. 97% yet to be discovered!

You do not have access to this resource.
Click here to request your free trial access!

Already subscribed? Log in!

The Ultimate Scientific and Technical Reference

A Comprehensive Knowledge Base, with over 1,200 authors and 100 scientific advisors
+ More than 10,000 articles and 1,000 how-to sheets, over 800 new or updated articles every year
From design to prototyping, right through to industrialization, the reference for securing the development of your industrial projects

This article is included in

Unit operations. Chemical reaction engineering

This offer includes:

Knowledge Base

Updated and enriched with articles validated by our scientific committees

Services

A set of exclusive tools to complement the resources

Practical Path

Operational and didactic, to guarantee the acquisition of transversal skills

Doc & Quiz

Interactive articles with quizzes, for constructive reading

Subscribe now!

Ongoing reading
Techniques for improving the fluidization of cohesive powders
Outline