Rigorous Simulation Study on the Dividing Wall Columns with Reduced Number of Intercolumn Vapor Transfers

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Abstract

Although the dividing wall column (DWC) has shown considerable advantage in energy saving, the industrial applications of DWC has been restricted by the uncontrollability of the vapor split ratio, which is an important parameter. In order to overcome such a difficulty, Agrawal et al proposed the improved configurations of DWC, in which extra column sections and condenser/reboiler were introduced so that the problem regarding the uncontrollability of the vapor split ratio in DWC was eliminated. However, Agrawal et al have analyzed the equivalency of the improved configurations with the original DWC based on short-cut method. In the present study, the improved configurations are simulated rigorously with Aspen Plus software with different mixture systems and the results demonstrate the equivalency of the improved configurations with the original DWC by comparing their performances. Moreover, the diameters of the various column sections of the improved configurations are estimated and their feasibilities for practical design are discussed.

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	Articles by authors
	Yuan Ye
	Yuan Xigang
	Luo Yiqing
	Yu Kuo-Tsong

Keywords： dividing wall columns； number of intercolumn vapor transfers； vapor split； rigorous simulation

Received 2015-03-24;

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Yuan Ye, Yuan Xigang, Luo Yiqing, Yu Kuo-Tsong.Rigorous Simulation Study on the Dividing Wall Columns with Reduced Number of Intercolumn Vapor Transfers[J] Chemcial Industry and Engineering, 2017,V34(1): 71-75

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