에타놀-물 共沸物의 蒸溜에 있어서 Entrainer가 미치는 影響 = Effectiveness of Entrainers in Distillation of Ethanol-Water Azeotrope

다국어 초록 (Multilingual Abstract)

Experiment on distillation of azeotropic mixture of ethanol and water was carried out in a packed tower with addition of trichloroethylene and n hexane as entrainer as well as of CO_2 gas. Effectiveness of the two entrainers and the effect of CO_2 gas flow rate in the separation of ethanol were studied.
The concentration of ethanol in distillation product increased with increasing ratio of entrainer to feed for both trichlorethylene and n-hexane. When n-hexane was used as an entrainer, the concentration of ethanol in the top product was higher than that which could be obtained without using n-hexane in the range of the entrainer/feed ratio of 1.28-1.67 and 1.63-1.67 for 15 and 25 mole % ethanol in the feed, respectively.
The rate of distillation production increased with the flow rate of CO_2 gas. With the increasing flow rate of CO_2 gas, the concentration of ethanol in the top product increased at the entrainer flow rate of 333m1/ hr; decreased at the entrainer flow rate of 100ml/hr; and increased initially and then decreased at the entrainer flow rate of 166.7m1/hr. When CO_2 gas was not added, trichloroethylene was more effective than m-hexane at the entrainerlfeed ratio of 0.5, 0.67, 0.83 while n-hexane was more effective than trichloroethylene at the entrainer/feed ratio of 1.17 and 1.67. When CO_2 gas was added at the flow rate of 0.5, 1.0, 1.5, 2.0 l/min and the entrainer/feed ratio was 0.5. 0.83, and 1.67. trichlororoethylene was more effective than n-hexane only at the CO_2 flow rate of 0.5 l/min and the entrainer/feed ratio of 0.5 while n-hexane was more effective than trichloroethylene at all other conditions.