Mechanistic Study of Accelerated Characterization of Ammonia Combustion Process by Premixed Hydrogen Gas
Ammonia is a kind of hydrogen carrier with great potential,but the combustion speed is slow,and there are some problems,such as low efficiency and poor stability when used alone in the power plant.Hydrogen-mixed combustion is an effective measure to accelerate the ammonia combustion process.In order to gain a deeper understanding of the impact of hydrogen blending on the flame combus-tion characteristics of ammonia-mixed fuels,this study conducts research based on detailed chemical ki-netic calculations of laminar flame speed and reaction sensitivity to hydrogen blending in ammonia.The results indicate that increasing the hydrogen blending ratio can significantly improve the combustion reac-tivity of ammonia.A higher initial environmental temperature has a noticeable promoting effect on fuel re-actions,while a higher initial environmental pressure has the opposite effect,with the highest laminar flame speed occurring at an equivalence ratio of around 1.12.
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