SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2019, Vol. 27 ›› Issue (3): 587-597.DOI: 10.1016/j.cjche.2018.06.030

• Process Systems Engineering and Process Safety • 上一篇    下一篇

Synthesis of the fluid machinery network in a circulating water system

Wei Gao, Xiao Feng   

  1. School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an 710049, China
  • 收稿日期:2018-04-18 修回日期:2018-06-29 出版日期:2019-03-28 发布日期:2019-04-25
  • 通讯作者: Xiao Feng,E-mail address:xfeng@xjtu.edu.cn
  • 基金资助:

    Supported by the National Natural Science Foundation of China (21736008).

Synthesis of the fluid machinery network in a circulating water system

Wei Gao, Xiao Feng   

  1. School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an 710049, China
  • Received:2018-04-18 Revised:2018-06-29 Online:2019-03-28 Published:2019-04-25
  • Contact: Xiao Feng,E-mail address:xfeng@xjtu.edu.cn
  • Supported by:

    Supported by the National Natural Science Foundation of China (21736008).

摘要: Energy consumption of the fluid machinery network in a circulating water system takes up a large part of energy consumption in the process industry, so optimization on the network will enhance the economic and environmental performance of the industry. In this paper, a synthesis approach is proposed to obtain the optimal network structure. The effective height curves are used as tools to perform energy analysis, so that the potential placement of water turbines and auxiliary pumps can be determined with energy benefit. Then economic optimization is carried out, by the mathematical model with the total cost as the objective function, to identify the branches for water turbines and auxiliary pumps with economic benefit. In this way, the optimal fluid machinery network structure can be obtained. The results of case study indicate that the proposed synthesis approach to optimize the fluid machinery network will obtain more remarkable benefits on economy, compared to optimizing only the water turbine network or pump network. The results under different flowrates of circulating water reveal that using a water turbine to recover power or adding an auxiliary pump to save energy in branches are only suitable to the flowrate in a certain range.

关键词: Fluid machinery network, Synthesis approach, Flowrate range, Network structure

Abstract: Energy consumption of the fluid machinery network in a circulating water system takes up a large part of energy consumption in the process industry, so optimization on the network will enhance the economic and environmental performance of the industry. In this paper, a synthesis approach is proposed to obtain the optimal network structure. The effective height curves are used as tools to perform energy analysis, so that the potential placement of water turbines and auxiliary pumps can be determined with energy benefit. Then economic optimization is carried out, by the mathematical model with the total cost as the objective function, to identify the branches for water turbines and auxiliary pumps with economic benefit. In this way, the optimal fluid machinery network structure can be obtained. The results of case study indicate that the proposed synthesis approach to optimize the fluid machinery network will obtain more remarkable benefits on economy, compared to optimizing only the water turbine network or pump network. The results under different flowrates of circulating water reveal that using a water turbine to recover power or adding an auxiliary pump to save energy in branches are only suitable to the flowrate in a certain range.

Key words: Fluid machinery network, Synthesis approach, Flowrate range, Network structure