The Research Of Production Hydrogen From Partial Oxidation And Steam Reforming Of Gasoline

This paper is to develop the economic and convenient hydrogen source from partial oxidation and steam reforming gasoline for the proton exchange membrane fuel cell (PEMFC).The independent equations have been ascertained for the reaction system of partial oxidation and steam reforming of gasoline by using mathematical method. The reaction system has been thermodynamically analyzed and calculated. The important order factors of effecting on the system are molar ratios of oxygen to oil, water to carbon and pressure, respectively. The optimum ratios of oxygen to oil and water to carbon have been confirmed based on calculation at different reaction temperatures. The minimum ratio of water to carbon that avoids the carbon formation has been confirmed.The catalyst of partial oxidation and steam reforming of gasoline to produce hydrogen has been first prepared, which has higher activity, selectivity, heat-resistant and better stability.The effect of technologic conditions such as reaction temperature, molar ratios of oxygen to oil and water to carbon on the partial oxidation and steam reforming of gasoline has been investigated in the fixed-bed reactor. According to the fixed-bed reactor results, it showed that the optimum conditions for the partial oxidation and steam reforming of gasoline were as follows: 700~800C, 0.5~2.0 molar ratio ofoxygen to oil, 1.5~2.5 molar ratio of water to carbon and 500~5000h-1 space velocity. The macro and intrinsical kinetics for the partial oxidation and steam reforming of gasoline has been first detailedly investigated. The experiential equations have been established based on experiment. The engineering test results showed that the experiential equations were appropriate.The calculation results of catalyst efficient factor showed that the catalyst inner diffusibility had great effect on the partial oxidation and steam reforming of gasoline, which was serious with the increasing reaction temperature.The non-isothermal plunger flow model for the partial oxidation and steam reforming of gasoline has been established. The effect of technologic conditions and reactor parameters on the partial oxidation and steam reforming of gasoline has been analyzed based on the model, which was useful for the designing reactor and optimizing the reactor parameters.