中文摘要：

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，分别研究了平行阵列微通道和仿蜂巢分叉微通道在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蒸汽重整制氢输运规律的影响，发现这两种微通道反应器均可促进甲醇转化率和氢气产率的提高。与常规平行微通道的比较发现，仿蜂巢分叉微通道内反应气流动所需的泵功较小；在相同的加热面积下所能吸收的热量更大，而且更有利于反应器内温度的均匀分布，从而提高甲醇的转化率、减小出口CO的含量。研究结果表明，仿蜂巢分叉微通道结构具有较好的重整制氢综合性能，并可改善氢气产出的品质。

英文摘要：

For methanol steam reforming process in a micro-channel reactor, a steady-state multicomponent three-dimension transport-reaction model was established. The catalytic process over Zn _ Cr/ CeO2/ZrO2 taken place in rectangular parallel micro-channels and in comby fractal micro-channel network was simulated numerically, and the effect of operating condition on reaction performance was investigated. The results indicated that the use of these micro-channels can make methanol conversion and hydrogen yield increase. Meanwhile, compared with rectangular parallel micro-channels, comby micro-channel network is of several advantages： much smaller requirement for pump power, adsorbing more heat under the same heating area and producing more uniform distribution of temperature. So, methanol conversion can be enhanced and CO reduced, which improve quality of hydrogen production.