Mechanism analysis on the two-phase flow characteristics in coalescence-dispersion pulsed-sieve-plate extraction columns / Tang Xiaojin in Industrial & engineering chemistry research, Vol. 47 N° 23 (Décembre 2008)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 47 N° 23 (Décembre 2008) . - p. 9724–9727 Titre : Mechanism analysis on the two-phase flow characteristics in coalescence-dispersion pulsed-sieve-plate extraction columns Type de document : texte imprimé Auteurs : Tang Xiaojin, Auteur ; Guangsheng Luo, Auteur ; Wang Jiading, Auteur Année de publication : 2009 Article en page(s) : p. 9724–9727 Note générale : Chemistry engineering Langues : Anglais (eng) Mots-clés : Mechanism analysis Flow characteristics Pulsed-Sieve Résumé : To investigate the influence of drop breakage and drop coalescence, a mechanism analysis of the liquid−liquid two-phase flow characteristics in the coalescence−dispersion pulsed-sieve-plate extraction column (CDPSEC) is performed. According to the experimental results, the operation of CDPSEC can be divided by a turning point into two regions: the drop breakage control region with higher holdup of the dispersed phase and the drop coalescence control region with lower holdup. The size of the maximum droplet in CDPSEC is estimated. It was found that, in the drop coalescence control region, droplets coalesce under the coalescence plate to produce the new large droplets, and the influence of drop coalescence is stronger than that of drop breakage. At the turning point, the new large droplets reach the maximum droplets and no larger droplets can be produced. From this point on, in the drop breakage control region, the droplets are so large that they break up into small droplets. Drop breakage becomes the main flow characteristic instead of drop coalescence. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie8002792 [article] Mechanism analysis on the two-phase flow characteristics in coalescence-dispersion pulsed-sieve-plate extraction columns [texte imprimé] / Tang Xiaojin, Auteur ; Guangsheng Luo, Auteur ; Wang Jiading, Auteur . - 2009 . - p. 9724–9727. Chemistry engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 47 N° 23 (Décembre 2008) . - p. 9724–9727 Mots-clés : Mechanism analysis Flow characteristics Pulsed-Sieve Résumé : To investigate the influence of drop breakage and drop coalescence, a mechanism analysis of the liquid−liquid two-phase flow characteristics in the coalescence−dispersion pulsed-sieve-plate extraction column (CDPSEC) is performed. According to the experimental results, the operation of CDPSEC can be divided by a turning point into two regions: the drop breakage control region with higher holdup of the dispersed phase and the drop coalescence control region with lower holdup. The size of the maximum droplet in CDPSEC is estimated. It was found that, in the drop coalescence control region, droplets coalesce under the coalescence plate to produce the new large droplets, and the influence of drop coalescence is stronger than that of drop breakage. At the turning point, the new large droplets reach the maximum droplets and no larger droplets can be produced. From this point on, in the drop breakage control region, the droplets are so large that they break up into small droplets. Drop breakage becomes the main flow characteristic instead of drop coalescence. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie8002792

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