天然气与石油2024，Vol.42Issue(3)：69-74,6.DOI:10.3969/j.issn.1006-5539.2024.03.011
LNG接收站液氮系统改造及应用
Modification and application of liquid nitrogen system in LNG terminal
摘要
Abstract
A Liquefied Natural Gas(LNG)terminal uses tank trucks for transporting liquid nitrogen from the air separation plant,a method fraught with issues such as lengthy time consumption,short operating hours,susceptibility to leaks,non-standardized operations,and various factors compromising timely delivery.In response to the above,through investigation and analysis of the factors affecting the liquid nitrogen supply,a new liquid nitrogen direct supply system was chosen as the optimal solution.The results show that:the system significantly accelerates the liquid nitrogen filling process,reducing the response time from 48 hours to 8 hours.The short operating hours are extended by 12 hours,enabling around-the-clock liquid nitrogen handling.The main task is done by Distributed Control System(DCS)operators,saving 160 man-hours over one year.It can save 200 000 yuan of liquid nitrogen cost over one year(including the intermediary cost and transportation cost of tank trucks).This pioneering modification and application of the new liquid nitrogen supply system sets a precedent nationwide.It offers a new process flow scheme and replicable template for nitrogen supply at domestic LNG terminals,substantially cutting operating costs and mitigating nitrogen supply risks.关键词
LNG接收站/氮气供应/项目改造/液氮直供/冷能利用Key words
LNG terminal/Nitrogen supply/Project modification/Direct supply of liquid nitrogen/Cold energy utilization引用本文复制引用
彭超..LNG接收站液氮系统改造及应用[J].天然气与石油,2024,42(3):69-74,6.基金项目
中国石油天然气集团有限公司前瞻性基础性技术攻关项目"油气田能量系统优化与能源管控研究"(2021DJ67) （2021DJ67）
