One-dimensional Pseudo-homogeneous Modeling and Simulation of Autothermal Reformer

Autothermal reformer (ATR) usually consists two separate sections: Combustion section and bed section. Namely combustion section model includes atomic mass balances of species, equilibrium equation for water-gas-shift (WGS) reaction and considering some reaction progress for methane steam reforming (MSR). Calculation starts with the assumption of equilibrium for MSR then by departing from equilibrium temperature, concentrations at the end of this section are computed. For bed section, a one–dimensional pseudo-homogeneous model is assumed. Pressure, temperature and concentration gradients along the bed are determined. Effectiveness factors (η) are small values and considered to b constant. It has been shown that their variations have little effect on results. Therefore pseudo-homogeneous model can be used confidently. Intrinsic kinetics is considered for MSR and WGS. Heat losses from reactor wall are taken into account. The results of the model are in good agreement with industrial data available in literature.

کلیدواژه ها:

Autothermal Reforming ، Synthesis gas ، Modeling ، Pseudo-homogeneous