Extraction and absorption with a vibrating perforated plate

摘要: Mass transfer rates and hydrodynamic behaviour have been measured for liquid-liquid gas-liquid dispersions formed at small perforations (0.3 to 1.5 mm diameter) in plates vibrating frequencies of 10–100 Hz amplitudes the order 0.1 mm. The light phase (liquid or gas) is fed beneath plate which provided with a skirt so that passes through form discrete drops bubbles. Sauter mean diameter was generally range 1–2 mm. Mass efficiency (acetic acid from kerosene water) found be 70% single plate; effect cell depth on small, indicating most mass occurred near plate. In case (oxygen uptake by water), volumetric coefficient s−1, compares well conventional equipment. On mesure les vitesses de transfert matiere et le comportement hydrodynamique pour des liquide-liquide gaz-liquide formees petites (de 0,3 1,5 diametre) dans plateaux vibrant frequences 10 100 l'ordre 0,1 La legere (liquide ou gazeuse) est alimentee sous plateau qui muni d'une jupe que la passe travers former gouttes bulles discretes. Le diametre moyen generalement 1 2 mm. On trouve l'efficacite du un systeme (acide acetique l'eau) etait unique; l'effet profondeur cellule sur faible, ce indique qu'une grande partie survient pres plateau. Dans cas d'un (apport d'oxygene par l'eau), volumetrique se compare bien aux resultats obtenus avec materiel traditionnel.