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Abstract�� In order to recover acetic acid with a high purity from dilute solution in some chemical processes,firstly the solution was concentrated by benzene/ethyl acetate mixed solvent;then some water and extractant in the system were removed by normal distillation;and at last azeotropic distillation was utilized to separate acetic acid using butyl acetate as entrainer.The purity of acetic acid can be up to 96.84%,and recovery percentage is 84.97%.The experiment could offer some guidelines to the industry.

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Received 2008-09-15; published 2008-09-15

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��;½��;��Ұ;��;.��ȡ��о��û��շ�Һ�еĴ��[J]. ��ѧ��ҵ�빤��, 2008,25(5): 424-427

BAI Peng,LU Chun-hong,TIAN Ye,YU Li-ming.Recovery of Dilute Acetic Acid by Solvent Extraction Together with Azeotropic Distillation[J]. Chemcial Industry and Engineering, 2008,25(5): 424-427

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