大型液化天然气储罐闪蒸气再液化系统设计  

Design of BOG reliquefaction system for a large-scale LNG storage tank

作　　者：姜亚如 冯汉升 袁树杰[1] 李世林 赵梓宇 陈怡丹 Jiang Yaru;Feng Hansheng;Yuan Shujie;Li Shilin;Zhao Ziyu;Chen Yidan(School of Safety Science and Engineering,Anhui University of Science and Technology,Huainan 232001,China;Institute of Energy,Hefei Comprehensive National Science Center,Hefei 230001,China;Institute of Plasma Physics,HFIPS,Chinese Academy of Science,Hefei 230031,China)

机构地区：[1]安徽理工大学安全科学与工程学院,淮南232001 [2]合肥综合性国家科学中心能源研究院,合肥230001 [3]中国科学院合肥物质科学研究院等离子体物理研究所,合肥230031

出　　处：《低温与超导》2025年第2期58-65,共8页Cryogenics and Superconductivity

基　　金：合肥综合性国家科学中心能源研究院项目(23KZS302,24KZS305)资助。

摘　　要：本文基于逆布雷顿循环原理,设计一种用于大型液化天然气储罐闪蒸气再液化的制冷系统。通过调整循环工质组分及系统关键参数,对制冷系统进行了优化。结果表明,优化后的系统较基础工况COP提升63.8%、效率提升5.7%,在安全性、适应性和可靠性方面也得到了提升。为LNG行业提供了一种高效、安全的气化气体再利用解决方案。Based on the principle of the inversed Brayton cycle,a refrigeration system for the boil-off gas re-liquefaction of large LNG storage tanks was designed in this study.The system was optimized by adjusting the composition of the working fluid and the key parameters.The results show that the optimized system achieves a 63.8%increase in COP and a 5.7%improvement in efficiency compared to the baseline conditions.Additionally,safety,adaptability and reliability have been improved.An effi-cient and safe boil-off gas re-utilization solution for the LNG industry is provided.

关 键 词：液化天然气存储 闪蒸汽再液化 逆布雷顿循环制冷 膨胀功回收 

分 类 号：TE08[石油与天然气工程]