FPLNG预处理及液化一体化工艺研究现状及发展趋势  

Research status and development trends of FPLNG pretreatment and liquefaction integrated process

作　　者：朱建鲁[1] 刘金华 李子禾 李玉星[1] 王武昌[1] 刘淼儿[2] 李恩道[2] 李焱 王云飞 ZHU Jianlu;LIU Jinhua;LI Zihe;LI Yuxing;WANG Wuchang;LIU Miaoer;LI Endao;Li Yan;WANG Yunfei(College of Pipeline and Civil Engineering,China University of Petroleum(East China),Qingdao 266580,Shandong,China;CNOOC Gas&Power Group,Beijing 100028,China;CNOOC Research Institute Co.,Ltd.,Beijing 116026,China)

机构地区：[1]中国石油大学(华东)储运与建筑工程学院,山东青岛266580 [2]中海石油气电集团有限责任公司,北京100028 [3]中海油研究总院有限责任公司,北京116026

出　　处：《低碳化学与化工》2024年第5期112-122,共11页Low-Carbon Chemistry and Chemical Engineering

基　　金：国家自然科学基金联合基金(U21B2085)。

摘　　要：海上天然气处理系统的紧凑性对其适应海上环境尤为重要。为解决浮式液化天然气生产储卸装置(FLNG)面临的甲板空间和承重受限的问题,提出了新型FLNG天然气带压液化工艺(FPLNG)的概念。阐述了FLNG关键技术和应用现状,并对FPLNG关键技术和储存方案进行了分析。FPLNG关键技术提高了CO_(2)和重烃的溶解度,可以简化预处理和液化工艺,而低温脱碳技术与液化工艺的协同可以实现海上天然气预处理和液化的一体化过程。带压液化天然气(PLNG)可以储存在高强度低温钢构成的高压储舱和罐式集装箱中,在压力约为0.5 MPa,且运输距离小于400 km时,高压储舱方案成本低于常压输送。FPLNG在我国深远天然气资源的高效开发中具有较大潜力,有望在未来得到广泛应用,但对于流体相平衡等问题仍需深入研究。The compactness of offshore natural gas processing systems is particularly crucial for adapting to offshore environments.To address the limited deck space and load-bearing capacity faced by floating liquefied natural gas production,storage,and offloading units(FLNG),the concept of a novel FLNG with pressurized liquefaction process(FPLNG)was proposed.The key technologies and application status of FLNG were elaborated,and the key technologies and storage solutions of FPLNG were analyzed.The key technologies of FPLNG enhance the solubility of CO2 and heavy hydrocarbons,simplifying the pretreatment and liquefaction processes.The synergy between low-temperature decarbonization technology and liquefaction process enables the integration of offshore natural gas pretreatment and liquefaction into a single process.Pressurized liquefied natural gas(PLNG)can be stored in high-pressure tanks with high-strength,low-temperature steel structures and tank containers.The high-pressure tank solution has lower costs than atmospheric pressure transportation when the pressure is approximately 0.5 MPa,and the transportation distance is less than 400 km.FPLNG has significant potential for the efficient development of China’s deep-sea natural gas resources and is expected to be widely applied in the future.However,further research is needed to address issues such as fluid phase equilibrium.

关 键 词：FPLNG 脱碳 液化 一体化 储存 

分 类 号：TE644[石油与天然气工程—油气加工工程] TE835