Effect of polymer granules on the electrostatic behavior in gas−solid fluidized beds / Xianbo Yu in Industrial & engineering chemistry research, Vol. 49 N° 1 (Janvier 2010)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 49 N° 1 (Janvier 2010) . - pp. 132–139 Titre : Effect of polymer granules on the electrostatic behavior in gas−solid fluidized beds Type de document : texte imprimé Auteurs : Xianbo Yu, Auteur ; Wei Li, Auteur ; Yi Xu, Auteur Année de publication : 2010 Article en page(s) : pp. 132–139 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Effect--Polymer Granules--Electrostatic--Gas−  Solid--Fluidized Beds Résumé : Granules polymers electrostatic behavior in a fluidized bed can be complicated by the differences in catalyst residue and surface properties among them. Electrically charged particles cling together in large aggregates and adhere to the wall of the apparatus. Polymer particles with the same chemical composition but different sizes would have their own special contributions to the generation of static charges. It is improtant to understand polymer particles role on electrostatic charge generation and dissipation. Experiments are carried out in a gas−solid fluidized bed with nitrogen as the fluidization gas to determine the relationship between the electrostatic charge level and the size of the polyethylene granule. By measuring the electrostatic potentials at different bed axial heights, it is found that the electric field inside the bed is significantly influenced by the size, weight fractions, and catalyst residue of added granular polyethylene. Consequently, an impact factor of granules (Fb) is proposed to study the influence of particle size and the weight percent of the residual catalyst to the electrostatic potentials. And it is found that the greater the degree of fineness of the granules, the more percentage of the residual catalyst in the particles, which results in the stronger affect on the electrostatic behavior in the fluidized bed. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie8017077 [article] Effect of polymer granules on the electrostatic behavior in gas−solid fluidized beds [texte imprimé] / Xianbo Yu, Auteur ; Wei Li, Auteur ; Yi Xu, Auteur . - 2010 . - pp. 132–139. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 1 (Janvier 2010) . - pp. 132–139 Mots-clés : Effect--Polymer Granules--Electrostatic--Gas−  Solid--Fluidized Beds Résumé : Granules polymers electrostatic behavior in a fluidized bed can be complicated by the differences in catalyst residue and surface properties among them. Electrically charged particles cling together in large aggregates and adhere to the wall of the apparatus. Polymer particles with the same chemical composition but different sizes would have their own special contributions to the generation of static charges. It is improtant to understand polymer particles role on electrostatic charge generation and dissipation. Experiments are carried out in a gas−solid fluidized bed with nitrogen as the fluidization gas to determine the relationship between the electrostatic charge level and the size of the polyethylene granule. By measuring the electrostatic potentials at different bed axial heights, it is found that the electric field inside the bed is significantly influenced by the size, weight fractions, and catalyst residue of added granular polyethylene. Consequently, an impact factor of granules (Fb) is proposed to study the influence of particle size and the weight percent of the residual catalyst to the electrostatic potentials. And it is found that the greater the degree of fineness of the granules, the more percentage of the residual catalyst in the particles, which results in the stronger affect on the electrostatic behavior in the fluidized bed. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie8017077

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