基于PetriNets优化集成共沸精馏系统方法的应用.PDF

第 25 卷第 1 期 高 校 化 学 工 程 学 报 No.1 Vol.25 2011 年 2 月 Journal of Chemical Engineering of Chinese Universities Feb. 2011 文章编号：1003-9015(2011)01-0129-07 基于 Petri Nets 优化集成共沸精馏系统方法的应用 金 山, 滕林政, 董宏光, 肖 武, 郭新闻 (大连理工大学 化工学院, 辽宁 大连 116012) 摘 要：基于Petri Nets 结构逻辑关系提出共沸精馏系统最优路径集成方法。首先，根据Petri Nets 概念拓扑操作单元 模块，即精馏、分相与混合模块；然后，建立共沸精馏系统可行操作路径超级结构，从而形成Petri Nets 关联矩阵并构 造状态方程，考虑最小操作数建立目标函数，进而通过求解0-1 整数线性规划，得到分离共沸物最优操作路径；最终， 通过实例计算结果与文献的对比，阐述了方法具有超级结构完备，数学模型精确，求解算法高效的优势。 关键词：Petri Nets ；共沸精馏；操作路径；整数规划；优化综合 中图分类号：TQ021.8 ；TQ028.31 文献标识码：A Application of Optimal Integration of Azeotropic Distillation System Based on Petri Nets JIN Shan, TENG Lin-zheng, DONG Hong-guang, XIAO Wu, GUO Xin-wen (School of Chemical Engineering, Dalian University of Technology, Dalian 116012, China) Abstract: A novel method for optimally integrating the flow sheet of an azeotropic distillation system was proposed based on the logical relationship of Petri Nets structure. Firstly, according to the concepts of Petri Nets, the unit operation topology modules were established, i.e., the modules of distillation, decantation and mixing modules; Then the superstructure of the azeotropic distillation system which embed all the feasible flow sheets was built up to generate Petri Nets correlation matrix, and thereby the corresponding state equation was constructed. An objective function was set up with the consideration of minimizing the number of operation units, then optimal feasible flow sheets of azeotrope separation were derived by solving 0-1 integer linear programming. Finally, by comparing the results in case study with the ones in literatures, the advantage of proposed method were illustrated as fol