减少气相耦合流股隔板塔的严格模拟研究

摘要

隔板塔虽然有显著的节能优势，但因在操作中无法控制和调节气相分割比这一重要参数，其工业应用受到了限制。为此Agrawal等提出了隔板塔的改进流程，通过增加塔段和冷凝器或者再沸器，有效避免了因气相分割比导致的局限性。Agrawal等仅用简捷法分析证明了几种新的结构和原隔板塔是等价的。用Aspen Plus软件，选用不同物系，对改进型隔板塔流程和原流程进行了严格模拟和比较，证实了改进流程和原流程的等效性。同时给出多种改进流程的塔径设计计算结果，对改进的隔板塔实际设计可行性进行了讨论。

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	袁野
	袁希钢
	罗祎青
	余国琮

关键词：隔板精馏塔；气相耦合流股数；气相分割；严格模拟

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.

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

Received 2015-03-24;

Corresponding Authors: 袁希钢,E-mail:yuanxg@tju.edu.cn。 Email: yuanxg@tju.edu.cn

About author: 袁野(1990-),男,硕士研究生,现从事化工流程模拟方面的研究。

引用本文:

袁野, 袁希钢, 罗祎青, 余国琮.减少气相耦合流股隔板塔的严格模拟研究[J]. 化学工业与工程, 2017,34(1): 71-75

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, 2017,34(1): 71-75

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