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

doi:10.1016/j.cjche.2017.01.002

›› 2017, Vol. 25 ›› Issue (8): 1043-1051.DOI: 10.1016/j.cjche.2017.01.002

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

Lixia Kang¹, Yongzhong Liu^1,2

1 Department of Chemical Engineering, Xi'an Jiaotong University, Xi'an 710049, China;
2 Key Laboratory of Thermo-Fluid Science and Engineering, Ministry of Education, Xi'an 710049, China

收稿日期:2016-09-20 修回日期:2017-01-15 出版日期:2017-08-28 发布日期:2017-09-11
通讯作者: Yongzhong Liu
基金资助:
Supported by the National Natural Science Foundation of China (21376188, 21676211).

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

Lixia Kang¹, Yongzhong Liu^1,2

1 Department of Chemical Engineering, Xi'an Jiaotong University, Xi'an 710049, China;
2 Key Laboratory of Thermo-Fluid Science and Engineering, Ministry of Education, Xi'an 710049, China

Received:2016-09-20 Revised:2017-01-15 Online:2017-08-28 Published:2017-09-11
Supported by:
Supported by the National Natural Science Foundation of China (21376188, 21676211).

摘要/Abstract

摘要： A systematic strategy for retrofit of the multi-period heat exchanger network (HEN) on the basis of the multiobjective 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 CO₂ 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.

关键词: Heat exchanger network, Multi-period operation, CO₂ emission, Retrofit restrictions

Abstract: A systematic strategy for retrofit of the multi-period heat exchanger network (HEN) on the basis of the multiobjective 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 CO₂ 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.

Key words: Heat exchanger network, Multi-period operation, CO₂ emission, Retrofit restrictions

Lixia Kang, Yongzhong Liu. A systematic strategy for multi-period heat exchanger network retrofit under multiple practical restrictions[J]. , 2017, 25(8): 1043-1051.

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

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

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