船用 BOG 再液化系统的工艺模拟及分析

天津科技 ›› 2023, Vol. 50 ›› Issue (3): 51-55.

船用 BOG 再液化系统的工艺模拟及分析

张海涛, 梁斌, 朱永凯, 周毅, 李萌

中海油能源发展股份有限公司采油服务公司天津 300452

收稿日期:2023-03-01 出版日期:2023-03-25 发布日期:2023-12-27

Process Simulation and Analysis of BOG Re-liquefaction System for LNG Carrier

ZHANG HaiTao, LIANG Bin, ZHU YongKai, ZHOU Yi, LI Meng

CNOOC Energy Technology & Services-Oil Production Services Co.,Tianjin 300452,China

Received:2023-03-01 Online:2023-03-25 Published:2023-12-27

摘要/Abstract

摘要： 船用 BOG 再液化系统是处理 LNG 船舶中蒸发气体的最常见方法。基于逆布雷顿循环的再液化系统,由于其紧凑性、简单性和安全性而成为再液化过程的首选。通过工艺模拟软件对 BOG 再液化工艺进行建模,研究制冷剂流量、制冷剂压缩机的出口压力对于再液化系统的功耗影响,并确定了不同出口压力下制冷剂的最小流量。此外,分析海水温度对于再液化系统的影响,结果表明,海水温度每升高1 ℃,系统功耗增加9 kW。

关键词: LNG船, 氮气制冷, BOG再液化, 逆布雷顿循环

Abstract: BOG re-liquefaction system for LNG carriers is the most common way to deal with boil-off gas (BOG) in LNG-fueled ships. A re-liquefaction system based on the reverse Brayton cycle is the first choice for the re-liquefaction process owing to its compactness,simplicity,and safety. The BOG re-liquefaction process is modeled by process simulation software,and the effect of refrigerant flow and outlet pressure of compressor on the power consumption of the re-liquefaction system is studied,and the minimum flow of refrigerant under different outlet pressures is determined. In addition,the effect of seawater temperature on the re-liquefaction system is analyzed,and the results show that the system power consumption increases by 9 kW for every 1°C increase in seawater temperature.

Key words: LNG carrier, nitrogen refrigeration, BOG re-liquefaction, reverse Brayton cycle

中图分类号:

TB66

张海涛, 梁斌, 朱永凯, 周毅, 李萌. 船用 BOG 再液化系统的工艺模拟及分析[J]. 天津科技, 2023, 50(3): 51-55.

ZHANG HaiTao, LIANG Bin, ZHU YongKai, ZHOU Yi, LI Meng. Process Simulation and Analysis of BOG Re-liquefaction System for LNG Carrier[J]. TIANJIN SCIENCE & TECHNOLOGY, 2023, 50(3): 51-55.

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