氢液化流程中催化换热一体化可行性研究

In view of the problems of high energy consumption and low output in actual hydrogen liquefaction plants, an integrated technology of heat transfer and ortho-para hydrogen conversion appeared in many new conceptual hydrogen liquefaction cycles. CFD numerical simulation method was used to study the flow heat transfer performance of the tiny fin channel of the catalyst filler plate-fin heat exchanger used in this technology. The results show that reducing the inlet Reynolds number of working medium, increasing the particle size of catalyst and increasing the porosity of packing can improve the overall performance of packed channel by 110%, 17.9% and 111%, respectively. By adjusting the Reynolds number, particle size and porosity of the filler, the integrated performance of the packed channel is slightly lower than that of the empty channel by 6.25%. Therefore, the feasibility of the integrated technology of catalytic process and heat transfer process is verified, which lays a foundation for the follow-up research.