基于树形分叉结构的微通道甲醇重整制氢  

Hydrogen Production by Steam Reforming of Methanol in a Tree-shaped Micro-channel Reactor

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作  者:沈寅麒[1] 张云芳[1] 陈桂山[1] 

机构地区:[1]华北电力大学能源动力与机械工程学院,北京102206

出  处:《电力与能源》2011年第1期70-73,共4页Power & Energy

摘  要:针对甲醇蒸汽的微通道重整催化反应过程,建立了三维稳态多组分传输反应模型,利用数值模拟分析,分别研究了平行矩形微通道和树形分叉微通道网络在Zn_Cr/CeO2/ZrO2催化剂下的反应情况。通过双速率模型考察这两种流道中操作条件对甲醇水蒸汽重整制氢输运规律的影响,发现这两种微通道反应器促进了甲醇转化率和氢气产率的提高,且有助于反应器内温度分布均匀;同时相较矩形平行微通道,树形分叉微通道可以进一步提高甲醇的转化率、减小出口CO的含量,是一种理想的适用于质子交换膜燃料电池的制氢流道。According to the catalytic reaction process of methanol steam reforming in a micro-channel reactor, a steady-state multi-component transport reaction model in three dimension was established. Numerical simulations help to analysis the reaction, based on Zn_Cr/CeO2/ZrO2 catalyst, both in rectangular parallel microchannels and in tree-shaped ones. Through the dual-rate model, the effect of the operating condition on the law of methanol steam reforming in these two kinds of micro channels has been studied, which reflects that these two micro channels are conducive to the increase of the methanol conversion, the hydrogen production and the uniformity of the distribution of the temperature in the reactor. Meanwhile, compared to the rectangular paral- lel micro-channels, tree-shaped micro-channels, managing to further enhance the methanol conversion and reduce the production of CO in the outlet, are ideal channels for the hydrogen production in the PEMFC.

关 键 词:微通道 树形分叉结构 甲醇重整 质子交换膜燃料电池 

分 类 号:TK91[动力工程及工程热物理] TQ02[化学工程]

 

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