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对含有多个杂质的间歇用水网络进行综合研究,提出了用水周期的概念,基于不失问题的内在特性原则,提出了模型简化的基本假设,并通过增加中间储罐来跨过时间约束,提出了基于超结构的多杂质用水网络模型,建立了该超结构模型的数学规划模型;提出了该数学模型的分步求解策略:①不考虑时间约束,将看成1个拟连续过程,获得间歇用水的目标网络;②引入时间约束,调整间歇用水网络结构,优化未稳定用水单元,向目标网络逼进;③最终获得最优的间歇用水网络结构。实例研究表明,本文提出的方法是间歇过程多杂质用水网络结构设计的有效工具,可在较少周期后获得稳定的网络结构,新鲜水用量可节省34.9%。
A comprehensive study of intermittent water networks containing multiple impurities is proposed, and the concept of water cycle is proposed. Based on the inherent characteristics of the problem, the basic assumptions of model simplification are proposed and the time constraints are added by adding intermediate tanks A multi-impurity water network model based on superstructure is established and a mathematical programming model of the superstructure model is established. A step-by-step solution strategy for the superstructure model is proposed: ① Regardless of the time constraint, it will be regarded as a quasi-continuous process, Water target network; (2) introduce time constraints, adjust the intermittent water network structure, optimize the unit of unsteady water, to the target network into; (3) eventually get the best intermittent water network structure. The case study shows that the method proposed in this paper is an effective tool for the design of multi-impurity water network structure in batch process. The stable network structure can be obtained after few cycles and the amount of fresh water can be saved by 34.9%.