Three-Phase Mass Transfer: Effect of the Size Distribution

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• 作者：Endre Nagy and Pé ; ter Hadik
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2003
• 出版时间：October 15, 2003
• 年：2003
• 卷：42
• 期：21
• 页码：5363 - 5372
• 全文大小：228K
• 年卷期：v.42,no.21(October 15, 2003)
• ISSN：1520-5045

文摘

The absorption of oxygen into the aqueous phase was measured in the presence of a dispersedsilicone oil phase. In the most experiments, a thin, permeable membrane layer resulting frominterface polymerization encapsulated the organic droplets. The size distribution and averagedroplet size, obtained at different stirrer speeds, were measured. Using a heterogeneous,multilayer mass-transfer model, enhancement was predicted as a function of mass-transfercoefficient without particles and average particle size. Enhancements measured and predictedwere compared to each other as a function of the dispersed-phase hold-up and the average particlesize. It was concluded that the particle size distribution can significantly alter the absorptionrate; thus, its effect should take into consideration in the prediction of absorption rateenhancement.