Simulation and Economic Benefit Analysis of Carburetor Combined Transport in Winter at a Liquefied Natural Gas Receiving Station

Song Cao, Tao Luan, Pengliang Zuo, Xiaolei Si, Pu Xie and Yingjun Guo ()
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Song Cao: School of Electrical Engineering, Hebei University of Science and Technology, Shijiazhuang 050027, China
Tao Luan: Caofeidian Xintian LNG Co., Ltd., Tangshan 063200, China
Pengliang Zuo: Caofeidian Xintian LNG Co., Ltd., Tangshan 063200, China
Xiaolei Si: Caofeidian Xintian LNG Co., Ltd., Tangshan 063200, China
Pu Xie: School of Information and Intelligent Engineering, Tianjin Renai College, Tianjin 301636, China
Yingjun Guo: School of Electrical Engineering, Hebei University of Science and Technology, Shijiazhuang 050027, China

Energies, 2025, vol. 18, issue 2, 1-14

Abstract: In the winter, a certain LNG receiving terminal operates exclusively with the submerged combustion vaporizer (SCV). However, due to the high operational costs associated with the SCV, a new combined operation scheme utilizing both the SCV and the open rack vaporizer (ORV) has been proposed. First, models for the SCV and ORV gasification units were developed in Aspen HYSYS and validated using actual operational parameters. Next, the relationship between the seawater inlet–outlet temperature difference and the minimum seawater flow rate for the ORV was determined, and an optimized seawater pump operation strategy, considering LNG export volumes, was formulated. Additionally, the relationship between the SCV fuel gas flow rate and LNG export volume was analyzed, and a comparison was made between the operating costs of SCV running independently and the combined SCV-ORV operation under winter conditions. The results of the combined operation experiments indicated that at a seawater inlet–outlet temperature difference of 3 °C, the joint operation mode could save costs by 70–77%; at 2.5 °C difference, it saves 60–67%; at 2 °C difference, it saves 45–50%; at 1.5 °C difference, it saves 35–38%; and at 1 °C difference, it saves 20–23%. This approach achieves optimized economic performance for LNG terminal operations.

Keywords: liquefied natural gas; liquefied natural gas; open rack vaporizer; submerged combustion vaporizer; economic optimization; seawater flow optimization (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: 2025
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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