Construction and Optimization of Liquefied Natural Gas Regasification Cold Energy Comprehensive Utilization System on Floating Storage Regasification Unit

被引：6
作者：
Yao Shouguang [1 ]
Wang Mengdi [1 ]
Yan Likun [1 ]
Zhang Qiang [1 ]
Ye Yong [2 ]
机构：
[1] Jiangsu Univ Sci & Technol, Sch Energy & Power Engn, Zhenjiang 212100, Jiangsu, Peoples R China
[2] China Ship Shenghui Equipment Co Ltd, Zhangjiagang 215600, Peoples R China
来源：
JOURNAL OF THERMAL SCIENCE | 2022年 / 31卷 / 06期
关键词：
LNG; cold energy utilization; mixed working fluid; organic Rankine cycle; boil-off gas (BOG) treatment; RANKINE-CYCLE; CARBON-DIOXIDE; POWER CYCLE; LNG; RECOVERY; TEMPERATURE; HEAT; PLANTS;
D O I：
10.1007/s11630-022-1597-6
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
In this paper, the efficient utilization of liquefied natural gas (LNG) vaporization cold energy in offshore liquefied natural gas floating storage regasification unit (FSRU) is studied. On the basis of considering different boil-off gas (BOG) practical treatment processes, a cascade comprehensive utilization scheme of cold energy of LNG based on the longitudinal three-stage organic Rankine cycle power generation and the low-grade cold energy used to frozen seawater desalination was proposed. Through the comparative analysis of the effects of the pure working fluid and eight mixed working fluids on the performance of the new system, the combination scheme of system mixed working fluid with the highest exergy efficiency of the system was determined. Then, the genetic algorithm was used to optimize the parameters of the new system. After optimization, the net output power of the LNG cold energy comprehensive utilization system proposed in this paper was 5186 kW, and the exergy efficiency is 30.6%. Considering the power generation and freshwater revenue, the annual economic benefit of the system operating is 18.71 million CNY.
引用
收藏
页码：1853 / 1867
页数：15
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