Research on Operation Optimization of LNG Submerged Pump System in LNG Receiving Terminals

Baoqing Wang, Kun Chen, Cheng Huang, Jinrui Zhao, Yaotong Zhang, Dequan Li and Lin Wang
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Baoqing Wang: Sinopec Tianjin Liquefied Natural Gas Co., Ltd., Tianjin 300457, China
Kun Chen: Petroleum Engineering School, Southwest Petroleum University, Chengdu 610500, China
Cheng Huang: Institute of Photovoltaic, Southwest Petroleum University, Chengdu 610500, China
Jinrui Zhao: Sinopec Tianjin Liquefied Natural Gas Co., Ltd., Tianjin 300457, China
Yaotong Zhang: Sinopec Tianjin Liquefied Natural Gas Co., Ltd., Tianjin 300457, China
Dequan Li: Sinopec Tianjin Liquefied Natural Gas Co., Ltd., Tianjin 300457, China
Lin Wang: School of Mechatronic Engineering, Southwest Petroleum University, Chengdu 610500, China

Energies, 2022, vol. 15, issue 9, 1-12

Abstract: This paper focuses on improving the operating efficiency of the Liquified Natural Gas (LNG) submerged pump system in the LNG receiving terminals and achieve energy saving. The minimum input energy consumption of the LNG submerged pump system is taken as the objective function, and an optimization model for the operation of the LNG submerged pump system with variable frequency speed is established. LINGO18.0 optimization software is used to solve the model to get the optimal LNG submerged pump operation plan that satisfies the constraints. Taking a certain LNG receiving terminal as an example, the operation optimization of its LNG submerged pump system is carried out, and the input energy consumption of the system before and after optimization is compared. The results show that the use of variable frequency pumps can reduce the energy consumption of the LNG submerged pump system of LNG receiving terminals, and the optimization model can reduce the input power consumption of the system by about 10% under different transportation conditions. After applying the optimization model to actual production, it is found that the model has certain practicability for guiding the production of LNG receiving terminal.

Keywords: LNG receiving terminal; LNG submerged pump; operation optimization; energy saving (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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