The effect of gas viscosity on the agglomerate particulate fluidization state of fine and ultrafine particles

Jose Manuel Valverde, Antonio Castellanos, Daniel Lepek, Jose Quevedo, Ayokunle Omosebi, Robert Pfeffer, Rajesh N. Dave

Research output: Contribution to conferencePaperpeer-review

1 Scopus citations

Abstract

Gas-fluidized fine particles agglomerate in a state of homogeneous, nonbubbling fluidization, so-called agglomerate particulate fluidization (APF). We analyze the role of gas viscosity on the APF state. Our results indicate that there is no relevant distinction between the agglomerates fluidized with different gases. However it is seen that a relatively small increment of gas viscosity opens up a new window of highly expanded APF state with delayed onset of bubbling. In the case of sufficiently high viscosity and/or small enough particle size we observe full suppression of the bubbling regime. For nanoparticles exhibiting agglomerate bubbling fiuidization (ABF) behavior where bed expansion is small and bubbling occurs soon after minimum fiuidization, we also observe a delayed onset of bubbling when fluidizing with a gas of higher viscosity.

Original languageEnglish (US)
StatePublished - Dec 1 2006
Event2006 AIChE Spring National Meeting - 5th World Congress on Particle Technology - Orlando, FL, United States
Duration: Apr 23 2006Apr 27 2006

Other

Other2006 AIChE Spring National Meeting - 5th World Congress on Particle Technology
CountryUnited States
CityOrlando, FL
Period4/23/064/27/06

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Chemistry(all)

Fingerprint Dive into the research topics of 'The effect of gas viscosity on the agglomerate particulate fluidization state of fine and ultrafine particles'. Together they form a unique fingerprint.

Cite this