プロセスシステム工学　Ｏ／Ｗ／Ｏ乳化液膜による炭化水素分離のための各種塔形式透過装置の性能の比較

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  • Process Systems Engineering. Comparison of Performance of Various Column Type Permeators for Hydrocarbon Separation by O/W/O Emulsion Liquid Membrane.
  • O W O ニュウカ エキマク ニヨル タンカ スイソ ブンリ ノ タメ ノ

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The permeation experiments of aromatics-nonaromatics binary model mixtures were conducted using two kinds of spray columns which formed different sizes of O/ W emulsion drops, in order to measure the overall volumetric permeation coefficients and the separation selectivities of aromatics components relative to nonaromatics components. The results of these two kinds of spray columns, and those of the packed column which were reported previously, were compared. The overall volumetric permeation coefficients of aromatics components and the separation selectivities in-creased in the order of the spray column which formed the relatively large emulsion drops, the spray column, the emulsion drops of which were rather fine, and the packed column. The packed column was the most effective permeator among the three. The separation selectivity was correlated with the parameter which corresponds to the number of inner oil droplets in the emulsion on the basis of the previous simple model for emulsion liquid membrane permeation (the multi-layer liquid membrane model). The separation selectivity increased as this parameter decreased, so that the separation selectivity of the packed column, whose number of inner droplets was smallest, was reconfirmed to be highest in the three permeators.

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