A systematic strategy for multi-period heat exchanger network retrofit under multiple practical restrictions

作     者：Lixia Kang Yongzhong Liu 

作者机构：Department of Chemical Engineering Xi'an Jiaotong University Key Laboratory of Thermo-Fluid Science and Engineering Ministry of Education 

出 版 物：《Chinese Journal of Chemical Engineering》 (中国化学工程学报（英文版）)

年 卷 期：2017年第25卷第8期

页      面：1043-1051页

核心收录：

学科分类：0710[理学-生物学] 080706[工学-化工过程机械] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学] 0817[工学-化学工程与技术] 0807[工学-动力工程及工程热物理] 0703[理学-化学] 

基　　金：Supported by the National Natural Science Foundation of China(21376188 21676211) 

主　　题：网络改造 换热器 系统 多目标优化模型 多工况 二氧化碳排放量 多段 水处理装置 

摘      要：A systematic strategy for retrofit of the multi-period heat exchanger network (HEN) on the basis of the multi-objective optimization is developed. In this three-stage procedure, a simplified multi-objective optimization model of the multi-period HEN is first established and then solved to target the retrofit, aiming to minimizing the total annual cost and total annual CO_2 emissions. The obtained Pareto front represents series of retrofit targets under different emission limitations, from which the most desirable one can be selected. The matching of the existing and the required heat exchangers is further implemented to finalize the retrofit, which will meet the practical retrofit requirements and matching restrictions. The application of the proposed procedure is illustrated through a case study of a HEN in a vacuum gas oil hydro-treating unit.