正仲氢连续催化转化是实现氢液化装置低能耗化的关键技术。正仲氢转化热具有温度相关性，且转化热随换热器沿程剧烈变化，影响氢气流动降温过程。本文针对连续转化式低温氢气板翅式换热器，通过理论分析与建立动态仿真模型研究连续转化式低温氢气换热器换热与催化匹配特性。结果显示，在不同温区具有最佳冷流体流量。以氦气为冷流体，在80∼60 K 范围最佳冷热质量流量比为3.5，在60∼40 K 范围最佳冷热质量流量比为4.7。该动态仿真揭示了氢气换热器内正仲转化与冷却流体间传热–催化匹配关系，为实际氢液化流程的设计和优化提供参考，有助于提高工艺效率、降低能源消耗，并推动氢能领域的可持续发展。

In hydrogen liquefaction systems, the continuous catalytic conversion of ortho-para hydrogen is recognized as a key technology for achieving low energy consumption. The conversion heat of ortho-para hydrogen, which exhibits temperature dependence, is observed to vary significantly along the course of the heat exchanger, influencing the cooling process of hydrogen gas flow. This study investigates continuous conversion cryogenic hydrogen plate-fin heat exchangers, employing theoretical analysis and the development of a dynamic simulation model to explore the heat exchange and catalytic matching characteristics of such exchangers. Optimal cold fluid flow rates in various temperature zones have been determined. When helium is used as a cold fluid, optimal cold-to-hot mass flow rate ratios of 3.5 in the 80∼60 K range and 4.7 in the 60∼40 K range are identified. The dynamic simulation elucidates the heat transfer-catalytic matching relationship between normal hydrogen conversion and the cooling fluid in hydrogen heat exchangers, offering insights for the design and optimization of hydrogen liquefaction processes. These findings contribute to enhancing process efficiency, reducing energy consumption, and promoting sustainable development in the
hydrogen energy sector.