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Abstract�� A new type of operation on batch distillation in mode of conjoint columns was proposed.The feasibility of this new operation was proved by the experiments in which two columns and three columns in periodic liquid material exchange were used as operation unit respectively and the system of ethanol-isopropanol(volume ratio of 1) ethylbenzene-para-xylene(volume ratio of 1) were chosen.The results of the experiments indicated that the new operation of two columns and three columns can obtain the separation effect of relative columns of two and three connected directly,while the whole pressure drop of the new operation is the same as the pressure drop of a single column.

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Received 2008-03-15; published 2008-03-15

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��;��;��;��;��;.��Һ�ཻ��ȫ��Ъ��[J]. ��ѧ��ҵ�빤��, 2008,25(2): 125-128

BAI Peng,WU Jun,LI Xiao-feng,WANG Chao,GUO Hong-jie.Total Reflux Batch Distillation Columns in Mode of Periodic Liquid Material Exchange[J]. Chemcial Industry and Engineering, 2008,25(2): 125-128