在甲醇转化制氢作质子交换膜燃料电池氢源的自供热体系中 ,基于过程的物料平衡、能量平衡和反应平衡 ,从热力学角度对甲醇转化制氢的两种工艺 ,即甲醇氧化转化工艺和外热式水蒸汽转化工艺进行了比较。研究结果表明 ,甲醇氧化转化制氢工艺比外热式水蒸汽转化制氢工艺制氢能量效率高 8%以上 ,CO排放量也低 In methanol conversion hydrogen production for proton exchange membrane fuel cell hydrogen source self-heating system, based on the process of material balance, energy balance and reaction equilibrium, from the thermodynamic point of methanol conversion of hydrogen production of two processes, namely methanol oxidation conversion process And external thermal steam reforming process were compared. The results show that the conversion efficiency of methanol to hydrogen is more than 8% higher than that of hydrogen production from external thermal steam reforming, and the CO emission is also low