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추출과 정류용에 의한 공비혼합물의 분리

Separation of Azeotropic Mixture by Extraction and Subsequent Rectification

HWAHAK KONGHAK, October 1975, 13(5), 269-274(6), NONE
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Abstract

염효과에 의한 공비혼합물의 분리를 위한 효과적인 프로세스의 개발을 목적으로 추출과 종류를 병용하기 위하여 n-propyl alcohol-water, i-propyl alcohol-water 공비혼합물에 각각 일정농도(wt%)의 K2CO3 및 Na2CO3를 가하여 추출조작후 그 상층액을 회분정류 조작에 의한 분리실험을 하였다. 그 결과 같은 농도(wt%)의 염을 가하여 회분정류 조작만을 행할 경우보다 분리가 효과적임을 알고 종전의 염을 사용한 증류프로세스를 변형하여 추출과 증류를 병용하는 새로운 프로세스를 제시함과 동시에 이 프로세스에 의한 n-propyl alcohol-water, i-propyl alcohol-water계의 분리 실험을 하여 좋은 결과를 얻었다.
In order to develope effective process for separating azeotropic mixture, n-propyl alcohol-water and i-propyl alcohol-water mixtures were respectively treated with K2CO3 and Na2CO3 solutions and the upper layers of the mixtures were decanted into the rectification still pot where the contents were continuously rectified in batch. The result of this extraction and subsequent batch rectification shows, in separation of azeotropic mixture, a better result than that of distilling directly the salt containing mixtures. This work presented a new extraction and distillation continuous process for separating azeotropic mixture. In this work, as high a about 98 wt% alcohols were obtained both from n-propyl alcohol-water and from i-propyl alcohol-water azeotropic mixtures.

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