氢液化流程设计和优化方法研究进展

Review on Researches and Developments of the Design and Optimization for Hydrogen Liquefaction Processes

随着全球能源消耗和环保形势日益严峻,氢能利用逐年增加,而氢低温液化是一个流程复杂、能耗高、效率较低的低温热力学过程,降低氢液化过程的能耗以及提高流程效率是研究的目标。本文总结了近年来氢液化流程设计和优化的研究进展,介绍并对比了预冷氢液化流程和级联氢液化流程,讨论了这些流程的单位能耗、火用效率和性能系数,并对核心设备进行了简单介绍,总结了文献中的氢液化流程的最新技术发展及未来的发展方向。

Technologies for hydrogen liquefaction have been developing rapidly due to the increasing demand for hydrogen energy.However,hydrogen liquefaction is an industrially complicated process with highenergy consumption and relatively low efficiency.Therefore,many researchers have focused on reducing the energy consumption and efficiency of hydrogen liquefaction.In this paper,recent research and developments in the design and optimization of hydrogen liquefaction are summarized,the pre-cooled hydrogen liquefaction process and the cascade hydrogen liquefaction process are introduced and compared.The specific energy consumption,exergy efficiencies,and coefficients of performance of these processes are discussed,and the main devices utilized are briefly introduced.Finally,the latest technologies for hydrogen liquefaction and future directions of development are introduced.