化工学报2011，Vol.62Issue(5)：1326-1338,13.DOI:10.3969/j.issn.0438-1157.2011.05.022
基于结构可控性分析的换热网络旁路优化设计
Optimal design of bypass location on heat exchanger networks based on structural controllability
摘要
Abstract
During the operation of heat exchanger networks (HEN) with varying operating conditions,bypass optimal control is considered an effective method to adjust outlet fluid temperature and save energy. However, locations of bypasses are derived without the verification by the control theory. And, it is always very difficult to choose the location of bypasses with the trade-off between controllability and capital investments. Therefore, it is necessary to develop a method to design a HEN control structure based on the control theory. Based on structural controllability, in order to maintain all states controllable and minimize the number of bypasses, a bypass optimal design method with all states controllable (method 1)was proposed. On the other hand, when the number of bypasses was limited, to maximize controllable states an alternative bypass optimal design method with sub-controllable states (method 2) was also presented. The results indicated that with these two methods, the optimal bypass design could be derived for any requirement of controllability and capital investments. A case study of HEN before desalting in an atmospheric/vacuum distillation plant demonstrated the effectiveness of these two methods proposed in this paper.关键词
换热网络/结构可控性/旁路/优化Key words
heat exchanger networks/ structural controllability/ bypass/ optimization分类
化学化工引用本文复制引用
侯本权,孙琳,罗雄麟..基于结构可控性分析的换热网络旁路优化设计[J].化工学报,2011,62(5):1326-1338,13.基金项目
国家自然科学基金项目(20976193). （20976193）
