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Numerical study of inhibition mechanism of high-pressure hydrogen leakage self-ignition with the addition of ammonia

引用

Petroleum Science 2023年第5期20卷 3184-3193页

作者： Lin Teng Xi-Gui Li Zhi-Wei Shan Wei-Dong Li Xin Huang Peng-Bo Yin Yong-Zhen Liu Jiang Bian Yu Luo Li-Long Jiang National Engineering Research Center of Chemical Fertilizer Catalyst(NERC-CFC) College of Chemical EngineeringFuzhou UniversityFuzhou350000FujianChina Qingyuan Innovation Laboratory(QYIL Fujian Innovation Laboratory of Chemical Engineering)Quanzhou362000FujianChina cEngineering China University of Petroleum(East China)Qingdao266580ShandongChina State Key Laboratory of Automobile Safety and Energy School of Vehicle and MobilityTsinghua UniversityBeijing100084China

Hydrogen and ammonia have attracted increasing attention as carbon-free *** is considered to be an effective energy storage and hydrogen storage ***,a small amount of unremoved NH3 is still present in the product during the decomposition of ammonia to produce ***,it is very essential to investigate the self-ignition of hydrogen-ammonia mixtures in order to accommodate the various scenarios of hydrogen energy *** this paper,the effect of NH3 addition on the self-ignition of high-pressure hydrogen release is numerically *** RNG k-εturbulence model,EDC combustion model,and 213-step detailed NH_(3)/H_(2) combustion mechanism are ***-Pro programs for zero-dimensional homogeneous and constant volume adiabatic reactor models are used for sensitivity analysis and ignition delay time of the chemical reaction *** results showed that the minimum burst pressure required for self-ignition increased significantly after the addition of *** maximum temperature and shock wave intensity inside the tube decreases with increasing ammonia *** ignition delay time and H,HO2,and OH radicals reduce with increasing ammonia concentration.H and HO2 radicals are suggested as indicators for tracking the second and third flame branches,respectively.

关键词： Ammonia-hydrogen energy Self-ignition Shock waves diffusion ignition Computational fluid dynamics

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