Determination of mass - transfer coefficient of CO2 in NH3 and CO2 absorption by materials balance in a rotating packed bed / Baochang Sun in Industrial & engineering chemistry research, Vol. 51 N° 33 (Août 2012)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 51 N° 33 (Août 2012) . - pp. 10949-10954 Titre : Determination of mass - transfer coefficient of CO2 in NH3 and CO2 absorption by materials balance in a rotating packed bed Type de document : texte imprimé Auteurs : Baochang Sun, Auteur ; Haikui Zou, Auteur ; Guangwen Chu, Auteur Année de publication : 2012 Article en page(s) : pp. 10949-10954 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Packed bed Material balance Gas absorption Carbon dioxide Mass transfer coefficient Résumé : More-accurate overall mass-transfer coefficients in a rotating packed bed (RPB) and local mass-transfer coefficients in different regions of the RPB were deduced by the material balance in order to obtain practical volumetric mass-transfer coefficients in the RPB. Experimental studies on the overall volumetric mass-transfer coefficients (KGa) of CO2 in NH3 and CO2 absorption into water in the RPB was carried out under different conditions. The experimental results indicated that there was a great difference between the value of KGa and KGa* attained by different boundary conditions. And it was concluded that an accurate design equation should be adopted to achieve a practical value of KGa in the RPB. It was also found that the KGa of CO2 increased with the increase of rotation speed, liquid volumetric flow rate, gas volumetric flow rate, NH3/CO2 molar ratio, and the decrease of temperature. The KGa of CO2 in the simultaneous absorption process of NH3 and CO2 was 2―6 times higher than that in the single CO2 absorption process. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26286469 [article] Determination of mass - transfer coefficient of CO2 in NH3 and CO2 absorption by materials balance in a rotating packed bed [texte imprimé] / Baochang Sun, Auteur ; Haikui Zou, Auteur ; Guangwen Chu, Auteur . - 2012 . - pp. 10949-10954. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 33 (Août 2012) . - pp. 10949-10954 Mots-clés : Packed bed Material balance Gas absorption Carbon dioxide Mass transfer coefficient Résumé : More-accurate overall mass-transfer coefficients in a rotating packed bed (RPB) and local mass-transfer coefficients in different regions of the RPB were deduced by the material balance in order to obtain practical volumetric mass-transfer coefficients in the RPB. Experimental studies on the overall volumetric mass-transfer coefficients (KGa) of CO2 in NH3 and CO2 absorption into water in the RPB was carried out under different conditions. The experimental results indicated that there was a great difference between the value of KGa and KGa* attained by different boundary conditions. And it was concluded that an accurate design equation should be adopted to achieve a practical value of KGa in the RPB. It was also found that the KGa of CO2 increased with the increase of rotation speed, liquid volumetric flow rate, gas volumetric flow rate, NH3/CO2 molar ratio, and the decrease of temperature. The KGa of CO2 in the simultaneous absorption process of NH3 and CO2 was 2―6 times higher than that in the single CO2 absorption process. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26286469

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