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甲醇氧化重整制氢过程(Ⅰ)反应条件对制氢过程的影响
引用本文:亓爱笃,王树东,洪学伦,付桂芝,吴迪镛.甲醇氧化重整制氢过程(Ⅰ)反应条件对制氢过程的影响[J].化工学报,2001,52(12):1095-1099.
作者姓名:亓爱笃  王树东  洪学伦  付桂芝  吴迪镛
作者单位:中国科学院大连化学物理研究所
基金项目:科技部“九五”攻关项目 ( 98-A2 7-0 1-0 3)
摘    要:通过对甲醇氧化重整 (POX)自热体系物料衡算、能量衡算 ,以及床层反应行为的研究 ,优化了POX过程操作条件 ,获得了理论产氢能量效率 η,分析了氢源与质子交换膜燃料电池 (PEMFC)衔接中的关键环节———合适的原料配比、反应压力、蒸发器和换热器中换热效率 ,以及适应PEMFC变载或电动汽车变速、爬坡的有效手段等

关 键 词:PEMFC  甲醇  氢源  氧化重整  产氢能量效率  气氛  制备  反应条件  动力学  质子交换膜燃料电池
文章编号:0438-1157(2001)12-1095-05
修稿时间:2000年1月13日

ON-BOARD HYDROGEN GENERATION BY METHANOL PARTIAL OXIDATION(Ⅰ)EFFECT OF REACTION CONDITIONS ON GROSS HEAT EFFICIENCY
QI Aidu,WANG Shudong,HONG Xuelun,FU Guizhi,WU Diyong.ON-BOARD HYDROGEN GENERATION BY METHANOL PARTIAL OXIDATION(Ⅰ)EFFECT OF REACTION CONDITIONS ON GROSS HEAT EFFICIENCY[J].Journal of Chemical Industry and Engineering(China),2001,52(12):1095-1099.
Authors:QI Aidu  WANG Shudong  HONG Xuelun  FU Guizhi  WU Diyong
Abstract:The effect of reaction conditions on the gross heat efficiency were studied on the basis of mass,and energy, balance as well as the kinetics of POX in the on-board hydrogen generation process, and the suitable reaction conditions were optimized when the whole system was considered as an autothermal process. In order to get η as high as possible, the mol ratios of O 2/CH 3OH ( f ) and H 2O/CH 3OH ( n ) should be adjusted carefully, and the suitable f and n were ca. 0.35 and ca. 0.8 respectively. The effect of reaction pressure on η was relatively trivial, which made it possible for POX to take place at a relatively high pressure to meet with PEMFC which usually works at 0.3 - 0.5 MPa. The heat exchange efficiency between the reformate and the cool reactants in the evaporator should be enhanced by increasing the heat exchange areas in order to obtain higher heat efficiency. Although fairly good heat efficiency could still be obtained when more methanol was consumed to meet with the increase of loading of PEMFC, more oxygen would have to be provided to the whole system which made the ’hot spot’ temperature even worse.
Keywords:PEMFC  methanol  hydrogen source  partial oxidation  gross heat efficiency
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