【摘要】 将甲烷水蒸气重整制氢反应与熔融碳酸盐燃料电池技术相结合,构成了以甲烷为燃料气的直接内重整熔融碳酸盐燃料电池(D IR-M C FC)。考察了影响电池性能的条件,发现反应气压力增加会提高电池性能,反应气压力由0.1M Pa升至0.6 M Pa,在150 m A/cm 2下,电池电压约提高200 m V;增加甲烷流量利于提高电池性能,但需要合理选择甲烷的利用率;常压下,进气水碳比为1时同等电流下电池初始电压较进气水碳比为2时高30～50 m V,而在0.6 M Pa下这两种进气水碳比对电池初性能影响不大;0.6 M Pa、水碳比为1时,催化剂容易积碳,从而降低电池运行的稳定性,因此,电池在较高压力下运行时应适当提高进气水碳比。更多还原

【Abstract】 The direct internal reforming molten carbonate fuel cell(DIR-MCFC) feeding methane was built with combining the methane steaming reforming reaction and the technology of MCFC.According to investigation on operation conditions,it is found that the performance of cell can be improved by elevating the reactants pressure.The potential increment is about 200 mV with the current density of 150 mA/cm2 after the reactants pressure raising from 0.1 MPa to 0.6 MPa.The higher flux of methane can bring more excellent cell performance,but the utilization of methane must be considered carefully.The initial potential with steam carbon ratio to 1 is about 30-50 mV higher than that of steam carbon ratio to 2 as no working pressure added at the same current,whereas the steam carbon ratio has little effects on the initial performance of cell with 0.6 MPa working pressure.It makes carbon easy to deposit on catalysts under the working conditions of 0.6 MPa and steam carbon ratio to 1,which will deteriorate the stability of cell.As a result,the steam carbon ratio should be elevated under higher working pressure.更多还原