关键词: 甲烷二氧化碳重整, 积炭, 孔隙率, 数值模拟

Abstract: A multiphysics-coupled numerical model, containing the equations of momentum and mass transfer, as well as the chemical reaction kinetics, is developed in this work, which is used to calculate the carbon deposition effect in the process of methane carbon dioxide reforming. The velocity field and pressure distribution in the reaction channel with porous media catalyst section, as well as the carbon particle concentration distribution in the reaction channel flowing with the gases and deposited on the catalyst surface, are all analyzed in detail. Meanwhile, the effects of carbon deposition on the porosity and permeability of porous catalyst are discussed, the effects of both temperature and methane concentration on carbon deposition are also analyzed. Finally, the carbon elimination methods are proposed. The conclusions in this paper are helpful for further research on the carbon elimination in CH₄-CO₂ reforming reaction based on Ni catalyst.

Key words: carbon dioxide reforming of methane, carbon deposition, porosity, numerical simulation