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带有中间储罐的间歇精馏的动态模拟与控制

作者:时间:2018-04-03点击数:

PDF全文下载:  201802006.pdf

 

文章编号: 16726987201802003707 DOI 10.16351/j.16726987.2018.02.006

 

王晓红, 谢力, 张远鹏, 于新帅

(青岛科技大学 化工学院,山东 青岛 266042

 

摘要: 使用Aspen PlusAspen Plus Dynamics模拟了用于分离正己烷/正庚烷/正辛烷三元体系的中间储罐间歇精馏过程。首先在稳态模拟中按照连续精馏流程的模拟方法确定稳态模拟流程,在动态模拟中关闭进料和产品出口阀门,来实现间歇精馏在Aspen PlusAspen Plus Dynamics中的模拟。在Aspen Plus Dynamics中研究带有高选择器的组成控制结构和温度控制结构。两种控制结构都能使产品纯度达到分离要求。结果显示:就产品纯度稳定性而言,带有高选择器的温度控制结构相比组成控制结构有更好的控制性能。

关键词: 中间储罐; 间歇精馏; 动态控制

中图分类号:  TQ 028文献标志码: A

引用格式:王晓红, 谢力, 张远鹏, . 带有中间储罐的间歇精馏的动态模拟与控制\[J\]. 青岛科技大学学报(自然科学版), 2018 392): 3743.

WANG Xiaohong, XIE Li, ZHANG Yuanpeng, et al. Dynamic simulation and control of a middle vessel batch distillation process\[J\]. Journal of Qingdao University of Science and TechnologyNatural Science Edition), 2018, 39(2) 3743.

 

Dynamic Simulation and Control of a Middle Vessel Batch Distillation Process

 

WANG Xiaohong, XIE Li, ZHANG Yuanpeng YU Xinshuai

(College of Chemical Engineering,Qingdao University of Science and Technology,Qingdao 266042,China)

 

Abstract: The middle vessel batch distillation process for separating the nhexane/nhexane/octane ternary system was simulated using Aspen Plus and Aspen Plus Dynamics. The steady state flowsheet of the middle vessel batch distillation was simulated in the manner of continuous distillation in the steadystate simulation, and then the feed and outlet valve was closed in dynamic simulation to implement the simulation of batch distillation process in Aspen Plus and Aspen Plus Dynamics.The composition control structure and the temperature control structure with high selectorswere studied in Aspen Plus Dynamics. The separation requirements are both meet under the two kinds of control structure. The results shows that the temperature control structure with high selectors has better control performance than thecomposition control structure with high selectors in terms of the stability of product purity.

Key words: middle vessel batch distillation dynamic control

 

收稿日期:    20161208

基金项目: 国家自然科学基金项目(21676151.

作者简介: 王晓红(1968—),女,副教授.

 

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