Ignition Analysis of Hydride Materials and Their Endothermic Reforming to Recover Exhaust Heat and CO_2

研究了各种碳氢化合物和氢化物的吸热重整特性，以回收废气中的热量和CO_2，并研究了它们及其重整气体的着火特性。结果总结如下：通过各种烃类或氢化物与h2o或CO_2的吸热催化反应，实现了高效的燃料重整和热回收。与CO_2反应相比，H_2O反应效率更高，产碳量更少。H_2生成率和热回收率随反应物浓度和反应温度的升高而升高。采用吸热重整的热回收比提高到30%以上，这表明采用含碳氢燃料或氢化物燃料催化转化炉的余热回收系统的热机热效率有可能显著提高。在碳氢化合物或氢化物燃料中加入不到5%的转化气体，其燃烧特性几乎没有变化。NTC区的点火特性在添加后也没有发生质的变化。

Endothermic reforming characteristics of various hydrocarbons and hydrides were investigated to recover the heat and CO_2 in exhaust gas Ignition characteristics of them and their reforming gases were also investigated.The results were summarized as follows ;The efficient fuel reforming and heat recovery were achieved by catalytic endothermic reaction of various hydrocarbons or hydrides reacting with H_2O or CO_2. The reforming process with H_2O was more efficient and of less carbon formation than with CO_2. H_2 formation ratios and heat recovery ratios increased with increase in reactant concentrations and reaction temperatures. Ratios of heat recovery with endothermic reforming increased up to more than 30%, suggesting a possibility for significant increase in thermal efficiency of heat engines with exhaust heat recovery system including catalytic reformer for hydrocarbon fuel of hydrides fuels.The ignition characteristics of the hydrocarbon or hydrides fuels were almost unchanged by adding their reformed gases to them by less than 5 % on energy basis. The ignition characteristics in NTC area were also unchanged qualitatively by the additions.