【Ten Years of Rapid Development in Chemical Equipment】Hydrogen liquefaction systems using domestically produced continuous primary-secondary hydrogen conversion heat exchangers from 1086 to 2023

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Ten years of rapid development in chemical engineering technology; praise for the prosperous and strong China. This is just a starting point to encourage more people to get involved, making things even more lively. HaiChuan becomes even better with your participation – we welcome everyone to join in the forum discussions. The fragrance of rice flowers in August -------------------------------------------On July 24, 2023, the 300L/h (0.5t/d) hydrogen liquefaction system developed by Aerospace Hydrogen Energy Technology Co., Ltd., which is part of the Sixth Academy of the China Aerospace Science and Technology Corporation, was successfully commissioned for operation for the first time. This system is the second domestic hydrogen liquefaction system to produce liquid hydrogen stably using a continuous positive-temperature coefficient hydrogen conversion heat exchanger (all core components, including the control system, catalysts, and continuous heat exchanger, are domestically produced). On September 9, 2021, the first domestically produced hydrogen liquefaction system developed by China Aerospace Science and Technology Corporation was successfully put into operation. Since then, the aerospace hydrogen energy team has remained focused on its goals, working diligently to develop hydrogen liquefaction systems that utilize more advanced continuous positive-branch hydrogen conversion heat exchangers. With the support of leaders at various levels from the Beijing Science and Technology Commission, the China Aerospace Science and Technology Corporation, the Sixth Academy of Aerospace, and the 101st Institute, as well as various scientific research projects, this technical challenge was successfully overcome on April 20, 2023. The hydrogen liquefaction system that was successfully operated this time is the fourth civilian hydrogen liquefaction system developed and brought online by China Aerospace since 2020, laying a solid technical foundation for large-scale, continuous positive-branch hydrogen conversion heat-exchange type hydrogen liquefaction systems. This system employs complex \"flow-heat-solid coupling\" processes for design and functional implementation, enabling larger-scale engineering applications of continuous normal and secondary hydrogen conversion heat exchangers ； By maintaining the advanced intelligent control logic that integrates multiple functions such as fault diagnosis, automatic start/stop, and adaptive control under varying conditions, the stability and reliability of the control system are further ensured.