低碳化学与化工2023，Vol.48Issue(6)：134-141,149,9.DOI:10.12434/j.issn.2097-2547.20230023
LNG预冷的新型氢液化工艺设计与优化
Design and optimization of novel hydrogen liquefaction process with LNG pre-cooling
孙恒 1徐嘉明 1王超 1耿金亮 1荣广新 1杨大聪 1高小雨1
作者信息
- 1. 中国石油大学(北京) 油气管道输送安全国家工程研究中心,城市油气输配技术北京市重点实验室,北京 102249
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摘要
Abstract
Liquid hydrogen has high energy density and high transportation efficiency,making it an important approach for the large-scale storage and transportation of hydrogen.In order to reduce the energy consumption of hydrogen liquefaction processes and improve efficiency,a new hydrogen liquefaction process based on LNG pre-cooling using dual mixed refrigerants has been proposed.This process utilizes the cryogenic energy of LNG for pre-cooling and employs a Brayton cycle with mixed refrigerants for deep cooling.The deep cooling section involves four-stage compression,three-stage expansion,and three-stage conversion of ortho-para hydrogen.The process was simulated using Aspen HYSYS software and optimized using the particle swarm optimization algorithm.The results show that the optimized process has a specific energy consumption of 5.263 kW·h/kg and an exergy efficiency of 58.18%,surpassing most known hydrogen liquefaction processes.This process has a relatively simple structure,with low energy consumption and high efficiency,which can provide new insights for the design and improvement of hydrogen liquefaction processes and expand the utilization of LNG cold energy recovery in coastal LNG terminals.关键词
LNG冷能/氢液化/粒子群算法/工艺优化Key words
LNG cold energy/hydrogen liquefaction/particle swarm optimization algorithm/process optimization分类
能源科技引用本文复制引用
孙恒,徐嘉明,王超,耿金亮,荣广新,杨大聪,高小雨..LNG预冷的新型氢液化工艺设计与优化[J].低碳化学与化工,2023,48(6):134-141,149,9.
