采用一维双温度体积平均模型和详细的甲烷化学反应机理GRI 3.0,对双层泡沫陶瓷多孔介质内甲烷富燃燃烧过程进行数值模拟,研究在双层多孔介质交界面附近稳定燃烧时的火焰稳定传播范围、火焰温度和组分分布及氢气的产量和能量转换效率.结果表明,双层多孔介质燃烧器能有效拓宽甲烷在空气中的富燃极限;在当量比大于1.6时,燃烧产物中氢气含量较多,氢气产生分为甲烷部分氧化和水煤气反应两个阶段;当量比在1.6～1,8之间时,能量转换效率较大,最大值约为46%.
Methane-rich combustion in a two-layer porous burner was numerically studied using one-dimensional two.temperature model and detailed chemical reaction mechanism GRI 3.0.The range of stable flames at the interface of the two-layer porous burner,the distributions of flame temperature and species,and hydrogen production and energy conversiofi efficiency were analyzed.The results show that methane-rich flammability is greatly enlarged by combustion in a porous burner.When the equivalence ratio is grater than 1.6,hydrogen amount is larger in the products of combustion and hydrogen is produced during the two stages of reforming of partial oxidation of methane and CO shift reaction.When the equivalence ratio is between 1.6 and 1.8,energy conversion efficiency is higher and its maximum value is about 46%.
参考文献
| [1] | H. Pedersen-Mjaanes;L. Chan;E. Mastorakos .Hydrogen production from rich combustion in porous media[J].International journal of hydrogen energy,2005(6):579-592. |
| [2] | F J Weinberg;T G Bartleet;F B Carleton et al.Partial Oxidation of Fuel-Rich Mixtures in a Spouted Bed Combustor[J].Combustion and Flame,1988,72:235-239. |
| [3] | J.P. Bingue;A.V. Saveliev;Lawrence A. Kennedy .Optimization of hydrogen production by filtration combustion of methane by oxygen enrichment and depletion[J].International journal of hydrogen energy,2004(13):1365-1370. |
| [4] | Raviraj S. Dhamrat;Janet L. Ellzey .Numerical and experimental study of the conversion of methane to hydrogen in a porous media reactor[J].Combustion and Flame,2006(4):698-709. |
| [5] | 赵平辉,朱旻明,张根烜,陈义良,姜海.双层多孔介质燃烧器的数值模拟[J].计算物理,2006(06):679-684. |
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