Influence of Structural Parameters of Catalyst Support on Hydrogen Production Performance of Diesel Reforming

Low-carbon hydrogenation is the development trend of future energy. Hydrogen energy has received extensive attention, and the acquisition of hydrogen is particularly critical. Compared with hydrogen storage technology, diesel has a high theoretical mass hydrogen storage density, and its storage and transportation are more efficient and convenient. Moreover, diesel reforming hydrogen production technology has a high theoretical hydrogen production ratio, a wide range of applications, and relatively mature infrastructure. In this paper, honeycomb ceramic was used as the carrier of nickel based catalyst, and the diesel reforming reactor is numerically simulated and the computational model is experimentally verified to explore the influence of the structural parameters of the catalyst carrier on the reforming effect. The experimental results show that the numerical simulation using FLUENT has high accuracy, which is in good agreement with the experimental results, and the error does not exceed 20%. From the point of view of reducing the temperature gradient of the reactor, the reactor temperature is relatively uniform and the volume concentration of hydrogen in the product is relatively high when the reactor is arranged sparsely in the front and densely in the back. When the number of inlet mesh is 200 and the number of outlet mesh is 600, it can reach 70–72%. The numerical simulation and experimental research in this paper provide a theoretical basis for the optimization of reforming hydrogen production reaction, which has practical significance in engineering application.