Study on high hydrogen yield for large-scale hydrogen fuel storage and transportation based on liquid organic hydrogen carrier reactor

•Large-scale LOHC reactor model is developed to describe dehydrogenation behavior.•Flow field distributions of all species and bed temperature are obtained for optimization.•Dehydrogenation reaction of 4H-NEC to 0H-NEC is found to be rate-controlling step.•Hydrogen yield is over 90% in large scale with short duration of 1.43 h.