关键词: 间歇过程, 换热网络, 集成, 优化, 生产排序, 系统工程

Abstract: Heat exchange network(HEN) synthesis is an important part of chemical process system engineering. Time,equipment and scheduling should be considered regarding to the design of the HEN for batch process,which brings complexity to the design of batch process. This paper focused on direct heat integration for multi-stage batch process considering scheduling. By using overlapping and non-overlapping operation and adjusting the limited cycle time,the opportunity of direct heat exchange was increased and the equipment idle time was reduced. Thus,three different production plans were obtained. Then for each production plan,an initial HEN was synthesized using heuristic method. Based on this method,HEN structure evolution was conducted by using the proposed progressive evolution rules and the trade-off between utility cost and equipment cost. After that,the number of heat exchangers and the branch streams was decreased. HEN with minimum total annual cost and less heat exchangers was gotten. The comparison between the three plans shows the scheduling effect on the HEN synthesis. Finally,an example was used to show the application and effectiveness of the proposed method.

Key words: batch process, heat exchange network, integration, optimization, scheduling, systems engineering