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Determination of interfacial area and overall volumetric mass-transfer oefficient in a novel type of two impinging streams reactor by chemical method / Asghar Molaei Dehkordi in Industrial & engineering chemistry research, Vol. 50 N° 10 (Mai 2011) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 50 N° 10 (Mai 2011) . - pp. 6426-6435 Titre : Determination of interfacial area and overall volumetric mass-transfer oefficient in a novel type of two impinging streams reactor by chemical method Type de document : texte imprimé Auteurs : Asghar Molaei Dehkordi, Auteur ; Chiya Savari, Auteur Année de publication : 2011 Article en page(s) : pp. 6426-6435 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Impinging  stream  Chemical  method  Reactor  Mass  transfer  Volumetric  mass  transfer  coefficient  Interfacial  area Résumé : The theory of mass transfer accompanied by chemical reaction for gas-liquid systems was used to measure the effective interfacial area (a) and the overall volumetric mass-transfer coefficient (kLa) in a new two impinging streams reactor (TISR), which is characterized by ahigh-intensity mixing chamber equipped with two two-phase nozzles directed toward each other. As a result of both the impinging process and high rate shear forces exerted on the gas and liquid phases, the overall volumetric mass-transfer coefficients of up to 0.41 s-1, and the mass-transfer coefficients (kL) of up to 15 × 10-4 m/s have been obtained. In addition, the influences of gas and liquid flow rates on the kLa and a values obtained in the TISR have been investigated. These experimental results verify the capability of the proposed TISR in gas-liquid operations. Furthermore, on the basis of the experimental results obtained, two correlations for both the Sherwood number for the liquid phase (ShL) and the specific interfacial area (a) in terms of Froude, Reynolds, Schmidt, and Morton numbers have been derived. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24158940 [article] Determination of interfacial area and overall volumetric mass-transfer oefficient in a novel type of two impinging streams reactor by chemical method [texte imprimé] / Asghar Molaei Dehkordi, Auteur ; Chiya Savari, Auteur . - 2011 . - pp. 6426-6435. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 10 (Mai 2011) . - pp. 6426-6435 Mots-clés : Impinging  stream  Chemical  method  Reactor  Mass  transfer  Volumetric  mass  transfer  coefficient  Interfacial  area Résumé : The theory of mass transfer accompanied by chemical reaction for gas-liquid systems was used to measure the effective interfacial area (a) and the overall volumetric mass-transfer coefficient (kLa) in a new two impinging streams reactor (TISR), which is characterized by ahigh-intensity mixing chamber equipped with two two-phase nozzles directed toward each other. As a result of both the impinging process and high rate shear forces exerted on the gas and liquid phases, the overall volumetric mass-transfer coefficients of up to 0.41 s-1, and the mass-transfer coefficients (kL) of up to 15 × 10-4 m/s have been obtained. In addition, the influences of gas and liquid flow rates on the kLa and a values obtained in the TISR have been investigated. These experimental results verify the capability of the proposed TISR in gas-liquid operations. Furthermore, on the basis of the experimental results obtained, two correlations for both the Sherwood number for the liquid phase (ShL) and the specific interfacial area (a) in terms of Froude, Reynolds, Schmidt, and Morton numbers have been derived. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24158940