Simultaneous optimization of heat-integrated water networks involving process-to-process streams for heat integration
Simultaneous optimization of heat-integrated water networks involving process-to-process streams for heat integration
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DOI：
10.1016/j.applthermaleng.2013.06.010
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发表时间：
2014-01
影响因子：
6.4
通讯作者：
E. Ahmetović;Z. Kravanja
中科院分区：
文献类型：
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作者：
E. Ahmetović;Z. Kravanja
这篇文章是我们最近工作的一个扩展，其中我们讨论了热集成水网络的同时综合。这项工作的新颖性和目标是开发一个扩展的超结构和热集成水网络的同步优化模型，现在包括过程到过程流和整个网络中的其他流，用于热集成。在大多数现有的热集成水网络模型中，尚未充分考虑到这些热集成机会。在这项研究中，我们提出了两种流程间流程的热整合策略。第一个问题包括在每个冷热过程流上放置热交换器。第二种方式允许冷却和分离热流，以及加热和分离冷流。该扩展模型被描述为一个非凸混合整数非线性规划(MINLP)问题。目标是将年度网络总成本降至最低。使用了两个具有单一和多个污染物的例子，以证明涉及用于热集成的过程对过程流，与文献报道的解决方案相比，可以获得新的和改进的解决方案。
This paper presents an extension of our recent work, in which we addressed the simultaneous synthesis of heat-integrated water networks. The novelty and goal of this work is the development of an extended superstructure and simultaneous optimization model of heat-integrated water networks now involving process-to-process streams, and other streams within the overall network, for heat integration. Those heat-integration opportunities have not yet been fully taken into account in most existing models of heat-integrated water networks. In this study, we presented two strategies for heat integration of process-to-process streams. The first one includes the placement of heat exchangers on each hot and cold process-to-process stream. The second allows for the cooling and splitting of hot streams, and heating and splitting of cold streams. This extended model was formulated as a non-convex mixed-integer non-linear programming (MINLP) problem. The objective was to minimize the total annual network cost. Two examples with single and multiple contaminants are used in order to demonstrate that involving process-to-process streams for heat integration, novel and improved solutions can be obtained compared to those reported in the literature.