Modeling and simulation of ammonia hydrogen reactor based on COMSOL

Abstract

In this paper, the optimal experimental conditions for the ammonia thermal cracking reaction with Ni-TiO2-Al2O3 complex as the catalyst were obtained through experimental studies, and the designed ammonia to hydrogen reaction generator was modeled and the parameters of the ammonia thermal cracking reaction were simulated and analyzed by COMSOL Multiphysics software based on the experimental data. The results show that the reaction is basically completed at the inlet flow rate of 1.5 L/min, the reactor temperature range of 500 °C-750 °C, and the molar fraction of remaining ammonia at the outlet is about 1 wt%, which indicates the feasibility of the model and verifies the accuracy of the experiment in reverse.