Role of Acoustic Fields in Promoting the Gas-Solid Contact in a Fluidized Bed of Fine Particles (Articolo in rivista)

Type
Label
  • Role of Acoustic Fields in Promoting the Gas-Solid Contact in a Fluidized Bed of Fine Particles (Articolo in rivista) (literal)
Anno
  • 2015-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.14356/kona.2015006 (literal)
Alternative label
  • Federica Raganati, Paola Ammendola, Riccardo Chirone (2015)
    Role of Acoustic Fields in Promoting the Gas-Solid Contact in a Fluidized Bed of Fine Particles
    in Kona
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Federica Raganati, Paola Ammendola, Riccardo Chirone (literal)
Pagina inizio
  • 23 (literal)
Pagina fine
  • 40 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 32 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 18 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Dipartimento di Ingegneria Chimica, dei Materiali e della Produzione Industriale, Università degli Studi di Napoli Federico II, Italy Istituto di Ricerche sulla Combustione-CNR, Italy (literal)
Titolo
  • Role of Acoustic Fields in Promoting the Gas-Solid Contact in a Fluidized Bed of Fine Particles (literal)
Abstract
  • The present work is a review presenting the main results obtained by our research group in the field of soundassisted fluidization of fine particles. Our aim is to highlight the role of acoustic fields in enhancing the gas-solid contact efficiency, with specific attention to the phenomenological mechanism upon which this technique is based. In particular, the first section presents the characterization of the fluidization behaviour of four different nanopowders in terms of pressure drops, bed expansion, and minimum fluidization velocity as affected by acoustic fields of different intensity and frequency. The fluidization of binary mixtures comprising two powders is also investigated under the application of different acoustic fields and varying the amounts of the two powders. The second section focuses on the study of the mixing process between two different nanopowders both from a \"global/macroscopic\" and \"local/microscopic\" point of view and highlighting the effect of mixture composition, primary particles density and sound intensity. The last section presents a promising application of sound-assisted fluidization, i.e. CO2 c apture b y a dsorption o n a fi ne a ctivated c arbon, p ointing o ut t he e ffect o f CO2 partial pressure, superficial gas velocity, sound intensity and frequency on the adsorption efficiency. (literal)
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