dc.creator | Espin, M. J. | es |
dc.creator | Valverde Millán, José Manuel | es |
dc.creator | Sánchez Quintanilla, Miguel Angel | es |
dc.creator | Castellanos, Antonio | es |
dc.date.accessioned | 2020-12-01T11:30:45Z | |
dc.date.available | 2020-12-01T11:30:45Z | |
dc.date.issued | 2009 | |
dc.identifier.citation | Espin, M.J., Valverde Millán, J.M., Sánchez Quintanilla, M.A. y Castellanos, A. (2009). Alternating Field Electronanofluidization. En 6th International Conference on the Micromechanics of Granular Media (97-100), Golden, Colorado, (Estados Unidos): American Institute of Physics. | |
dc.identifier.issn | 0094-243X (impreso) | es |
dc.identifier.issn | 1551-7616 (electrónico) | es |
dc.identifier.uri | https://hdl.handle.net/11441/102864 | |
dc.description.abstract | The use of fluidized beds to remove submicron particles from gases has been investigated since 1949. High efficiency removal was achieved in the 1970’s by imposing an electric field on a fluidized bed of semi-insulating granules that were able to collect the charged pollutant entrained in the fluidizing gas. In spite of their extended use nowadays, the collection efficiency of electrofluidized beds (EFB) is still hindered by gas bypassing associated to gas bubbling and the
consequent requirement of too high gas flow and pressure drop. In this paper we report on the electromechanical behavior of an EFB of insulating nanoparticles. When fluidized by gas, these nanoparticles form extremely porous light agglomerates of size of the order of hundreds of microns that allow for a highly expanded nonbubbling fluidized state at reduced gas flow. It
is found that fluidization uniformity and bed expansion are additionally enhanced by an imposed AC electric field for field oscillation frequencies of several tens of hertzs and field strengths of the order of 1 kV/cm. For oscillation frequencies of the order of hertzs, or smaller, bed expansion is hindered due to electrophoretic deposition of the agglomerates onto the vessel
walls, whereas for oscillation frequencies of the order of kilohertzs, or larger, electrophoresis is nullified and bed expansion
is not affected. According to a proposed model, the size of nanoparticle agglomerates stems from the balance between shear, which depends on field strength, and van der Waals forces. The optimum field strength for enhancing bed expansion produces an electric force on the agglomerates similar to their weight force, while the oscillation velocity of the agglomerates is similar to the gas velocity. | es |
dc.description.sponsorship | Ministerio de Ciencia y Tecnología (MCYT). España FIS2006-03645 | es |
dc.description.sponsorship | Junta de Andalucía FQM 421 | es |
dc.format | application/pdf | es |
dc.format.extent | 5 p. | es |
dc.language.iso | eng | es |
dc.publisher | American Institute of Physics | es |
dc.relation.ispartof | 6th International Conference on the Micromechanics of Granular Media (2009), p 97-100 | |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internacional | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | * |
dc.subject | Fluidized beds | es |
dc.subject | Nanopowders | es |
dc.subject | Filters | es |
dc.title | Alternating Field Electronanofluidization | es |
dc.type | info:eu-repo/semantics/conferenceObject | es |
dcterms.identifier | https://ror.org/03yxnpp24 | |
dc.type.version | info:eu-repo/semantics/publishedVersion | es |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | es |
dc.contributor.affiliation | Universidad de Sevilla. Departamento de Electrónica y Electromagnetismo | es |
dc.relation.projectID | FIS2006-03645 | es |
dc.relation.projectID | FQM 421 | es |
dc.relation.publisherversion | https://doi.org/10.1063/1.3180095 | es |
dc.identifier.doi | 10.1063/1.3180095 | es |
dc.publication.initialPage | 97 | es |
dc.publication.endPage | 100 | es |
dc.eventtitle | 6th International Conference on the Micromechanics of Granular Media | es |
dc.eventinstitution | Golden, Colorado, (Estados Unidos) | es |
dc.contributor.funder | Ministerio de Ciencia y Tecnología (MCYT). España | es |
dc.contributor.funder | Junta de Andalucía | es |