摘要
为了简化燃料电池氢源系统,考察了单通道中集成甲醇蒸汽重整、水汽置换和一氧化碳选择氧化单元对反应器出口参数的影响。利用计算流体力学软件FLUENT中的通用有限速率模型对该过程进行了二维数值研究。计算表明,在单通道中集成制氢和去除一氧化碳3个功能单元之后,在最佳反应条件,即进口温度453 K、进口速度0.4 m/s及水醇氧质量比0.369 9∶0.63∶0.000 1下,甲醇的转化率达98.8%,氧气的转化率为15.2%,出口氢气摩尔分数达到74%,而出口CO摩尔分数降低至3.43×10-8,能完全满足燃料电池对富氢燃料中CO摩尔分数的要求。
In order to simplify hydrogen production system for fuel cells,the effect of methanol steam reforming,water gas shift reaction and partial oxidation of CO in single channel to the reactor outlet parameters were investigated by applying the general finite reaction rate model in CFD software of FLUENT. The 2-D simulation results shows that after integrating the three reaction units,under optimum condition of 453 K, 0. 4 m/s and water-methanol-oxygen mass ratio of 0. 369 9 ： 0.63 ： 0. 000 1,methanol and oxygen conversion reaches 98.8% and 15.2% respectively,and the mole fraction of hydrogen reaches 74G ,moreover the carbon monoxide mole fraction decrease as low as 3.43× 10^-8 ,completely satisfies the request of fuel cells.
出处
《石油化工设备》
CAS
2007年第6期10-14,共5页
Petro-Chemical Equipment
基金
国家自然科学基金资助项目(50276073)
重庆市自然科学基金资助项目(CSTC.2006BB6221)
关键词
燃料电池
单通道
功能集成
数值模拟
fuel cell
single channel
function integration
simulation
