液-液分散に対する羽根径の影響(第7報)

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The present work was undertaken to examine the effect of impeller diameter and impeller velocity on liquid-liquid dispersion. The apparatus consisted of a cylindrical vessel (150 mm φ) made of clear acrylate resin and Rushton-type impe1ler. Impeller diameter used in this experiment were 50.30,65.20,80.30,90.10,and 99.20 mm. Water and a mixture of heptane and carbon tetrachloride were used as continuous phase and dispersed phase, respectively. The mixture was agitated continuously for 60 min, and the revolution number was in the range of 330 to 812 rpm. The particle size distribution was calculated by a microscopic method. The following results were obtained from this experiment. 1) Particle size distribution showed a normal distribution. 2) Mean surface-volume diameter, d_<32>, became inversely proportionaly to 1.710 power of impeller diameter, D. 3) Mean surface-volume diameter, d_<32>, became inversely proportionaly to 1.320 power of revolution number. 4) If specifrc interfacial area ΔS was expressed as the function of revolution number N and impeller diameter D, experimental equaltion was follows : log ΔS=1.4124 log N+1.8297 log.D-1.7047
公益社団法人日本薬学会の論文
1974-04-25