数学规划与图形方法相结合设计热集成用水网络  

Optimal design of heat integrated water allocation networks combining mathematical programming with graphical tools

作　　者：彭肖祎 董轩 廖祖维[1] 杨遥[1] 孙婧元[1] 蒋斌波[1] 王靖岱[1] 阳永荣[1] PENG Xiaoyi;DONG Xuan;LIAO Zuwei;YANG Yao;SUN Jingyuan;JIANG Binbo;WANG Jingdai;YANG Yongrong(College of Chemical and Biological Engineering,Zhejiang University,State Key Laboratory of Chemical Engineering,Hangzhou 310027,Zhejiang,China)

机构地区：[1]浙江大学化学工程与生物工程学院,化学工程联合国家重点实验室,浙江杭州310027

出　　处：《化工学报》2021年第2期1047-1058,共12页CIESC Journal

基　　金：国家自然科学基金项目(21822809,21978256);宁夏回族自治区重点研发计划重大(重点)项目(2019BFH02016)。

摘　　要：将数学规划法与图形方法相结合探究单杂质用水网络与换热网络的集成问题。首先构建混合整数非线性规划模型(MINLP),在最小公用工程消耗下优化流股参数未知情况下的分离系统组合曲线面积,得到了最为节能、换热面积最小的用水网络结构。在此基础上,提出了新的分离系统组合曲线演化步骤和规则,可以得到换热单元数目较小的换热网络结构。算例表明,与现有的基于分离系统的热集成用水网络设计方法相比,在最小化公用工程用量的同时可以进一步降低换热器数目与总换热面积。The mathematical programming method and the graphic method are combined to explore the heat integrated water allocation networks.First,a mixed integer non-linear programming model(MINLP)was constructed to optimize the combined curve area of the separation system in the case of unknown stream parameters under minimum utility consumption,and the most energy-efficient water network structure with the minimum heat exchange area was obtained.Then,design heuristics are proposed for the composite curve of the new separation system.The heat exchanger network structure with a small number of heat exchange units can be obtained.The calculation example shows that compared with the existing design method of heat integrated water network based on separation system,it can further reduce the number of heat exchangers and the total heat exchange area while minimizing the amount of public works.

关 键 词：用水网络 能量集成 混合整数非线性规划 组合曲线 换热网络设计 

分 类 号：TQ021.8[化学工程]