本文仿照熱交換器中之熱傳送，分析平板質量交換器中順流、逆流及交流等操作之薄膜透析。結果發現：分離效率隨透析液流率，進料溶液流率或兩相溶液流率之比值的增加而增大。至於三種流動操作下之分離效率大小依順序為：逆流>交流>順流；惟當兩相溶液流率漸大時，三者趨近於一致。 A study on membrane dialysis in rectangular mass exchangers has been carried out under cocurrent-flow, countercurrent-flow and cross-flow operations. It was found that mass transfer of dialysis in rectangular mass exchangers of microporous membrane can be analogous to heat transfer in rectangular heat exchangers. The separation efficiency increases with the flow rate of the retentate phase, or with the flow rate of dialysate phase, or with the ratio of the flow rate of the dialysate phase to that of the dialyzed in countercurrent-flow arrangement, the least in concurrent flow. However, the separation efficiencies of three flow-type devices approach the unity when both the flow rates in the retentate phase and the dialysate phase become very large.
關聯:
Journal of the Chinese Institute of Chemical Engineers 34(3), pp.381-386
