LNG接收站制氢储氢系统优化及应用效果  

Optimization and application effect of hydrogen production and storage system of LNG receiving station

作　　者：吕志军 田翔宇 许昊 黎迎晖 LV Zhijun;TIAN Xiangyu;XU Hao;LI Yinghui(National Pipeline Network Group Shenzhen Natural Gas Co.,Ltd.,Guangdong,Shenzhen 518000,Guangdong China;Beijing Aerospace Experimental Technology Research Institute,Beijing 100071,China)

机构地区：[1]国家管网集团深圳天然气有限公司,广东深圳518000 [2]北京航天试验技术研究所,北京100071

出　　处：《粘接》2025年第2期133-136,共4页Adhesion

摘　　要：针对传统液化天然气(LNG)气化过程资源利用率低,常规的氢气液化能量消耗大的问题,提出一种甲烷蒸汽制氢-LNG预冷氢气液化储氢优化系统的构建,完成资源的耦合。分别对甲烷蒸汽制氢条件和LNG预冷氢气液化储氢条件进行优化,对实际应用效果进行分析。试验结果表明,重整反应温度为1000℃,重整反应压力为1 MPa,水碳比为3.0。LNG预冷氢气液化最佳条件为,预压压力为4 MPa,原料液化天然气流股LNG的质量流量为80 t/h,经甲烷蒸汽制氢-LNG预冷氢气液化储氢最终液氢产率为9.17 t/h,纯度为99.99%,单位液氮消耗功率约为73.4 kW·h/kg,液化子系统比能耗为14.7 kW·h/kg,液化子系统比能耗明显低于传统液化子系统。In order to solve the problems of low resource utilization rate and high energy consumption of conventional hydrogen liquefaction in the traditional liquefied natural gas(LNG)gasification process,an optimization system for methane steam hydrogen production and LNG pre-cooled hydrogen liquefaction and hydrogen storage was proposed to complete the coupling of resources.The conditions for hydrogen production by methane steam and the liquefaction and storage of LNG pre-cooled hydrogen were optimized,and the practical application effects were analyzed.The experimental results showed that the temperature of the reforming reaction was 1000℃,the pressure of the reforming reaction was 1 MPa,and the water-to-carbon ratio was 3.0.The optimal conditions for LNG pre-cooled hydrogen liquefaction were as follows:the preloading pressure was 4 MPa,the mass flow rate of the raw LNG flow strand LNG was 80 t/h,the final liquid hydrogen yield was 9.17 t/h,the purity was 99.99%,the power consumption per unit of liquid nitrogen was about 73.4 kW·h/kg,and the specific energy consumption of the liquefaction subsystem was 14.7 kW·h/kg,which was significantly lower than that of the traditional liquefaction subsystem.

关 键 词：液态天然气 制氢储氢 节能效果 系统能耗 LNG冷能 

分 类 号：TQ116.25[化学工程—无机化工]