Role of Acoustic Fields in Promoting the Gas-Solid Contact in a Fluidized Bed of Fine Particles
The present work is a review presenting the main results obtained by our research group in the field of sound-assisted 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 me...
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| Format: | Article |
| Language: | English |
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Hosokawa Powder Technology Foundation
2014-09-01
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| Series: | KONA Powder and Particle Journal |
| Subjects: | |
| Online Access: | https://www.jstage.jst.go.jp/article/kona/32/0/32_2015006/_html/-char/en |
| _version_ | 1818459172315856896 |
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| author | Federica Raganati Paola Ammendola Riccardo Chirone |
| author_facet | Federica Raganati Paola Ammendola Riccardo Chirone |
| author_sort | Federica Raganati |
| collection | DOAJ |
| description | The present work is a review presenting the main results obtained by our research group in the field of sound-assisted 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 capture by adsorption on a fine activated carbon, pointing out the effect of CO2 partial pressure, superficial gas velocity, sound intensity and frequency on the adsorption efficiency. |
| first_indexed | 2024-12-14T23:10:08Z |
| format | Article |
| id | doaj.art-5378f337e2c245a48e715af3549844e2 |
| institution | Directory Open Access Journal |
| issn | 0288-4534 2187-5537 |
| language | English |
| last_indexed | 2024-12-14T23:10:08Z |
| publishDate | 2014-09-01 |
| publisher | Hosokawa Powder Technology Foundation |
| record_format | Article |
| series | KONA Powder and Particle Journal |
| spelling | doaj.art-5378f337e2c245a48e715af3549844e22022-12-21T22:44:13ZengHosokawa Powder Technology FoundationKONA Powder and Particle Journal0288-45342187-55372014-09-01320234010.14356/kona.2015006konaRole of Acoustic Fields in Promoting the Gas-Solid Contact in a Fluidized Bed of Fine ParticlesFederica Raganati0Paola Ammendola1Riccardo Chirone2Dipartimento di Ingegneria Chimica, dei Materiali e della Produzione Industriale, Università degli Studi di Napoli Federico II, ItalyIstituto di Ricerche sulla Combustione-CNR, ItalyIstituto di Ricerche sulla Combustione-CNR, ItalyThe present work is a review presenting the main results obtained by our research group in the field of sound-assisted 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 capture by adsorption on a fine activated carbon, pointing out the effect of CO2 partial pressure, superficial gas velocity, sound intensity and frequency on the adsorption efficiency.https://www.jstage.jst.go.jp/article/kona/32/0/32_2015006/_html/-char/ensound-assisted fluidizationnanoparticlesco2 captureadsorptionnanoparticle mixingnanoparticle binary mixture |
| spellingShingle | Federica Raganati Paola Ammendola Riccardo Chirone Role of Acoustic Fields in Promoting the Gas-Solid Contact in a Fluidized Bed of Fine Particles KONA Powder and Particle Journal sound-assisted fluidization nanoparticles co2 capture adsorption nanoparticle mixing nanoparticle binary mixture |
| title | Role of Acoustic Fields in Promoting the Gas-Solid Contact in a Fluidized Bed of Fine Particles |
| title_full | Role of Acoustic Fields in Promoting the Gas-Solid Contact in a Fluidized Bed of Fine Particles |
| title_fullStr | Role of Acoustic Fields in Promoting the Gas-Solid Contact in a Fluidized Bed of Fine Particles |
| title_full_unstemmed | Role of Acoustic Fields in Promoting the Gas-Solid Contact in a Fluidized Bed of Fine Particles |
| title_short | Role of Acoustic Fields in Promoting the Gas-Solid Contact in a Fluidized Bed of Fine Particles |
| title_sort | role of acoustic fields in promoting the gas solid contact in a fluidized bed of fine particles |
| topic | sound-assisted fluidization nanoparticles co2 capture adsorption nanoparticle mixing nanoparticle binary mixture |
| url | https://www.jstage.jst.go.jp/article/kona/32/0/32_2015006/_html/-char/en |
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