甲醇催化重整制氢反应器的二维模拟及管径的选取

以甲醇裂解和甲醇水蒸气重整制氢作为平行的独立反应，CO、CO2为关键组分，建立了甲醇催化重整制氢反应器的二维数学模型，用正交配置法计算了催化床内各组分浓度及床层温度随径向和轴向的分布。考察了反应管管径变化对反应器性能的影响。在整个床层催化剂装填量及反应操作条件均不变的情况下，反应管管径增加，催化床层的出口温度降低，径向温差加大，氢气的时空产率略有降低，但所需的反应管根数迅速减少。

Simulation of Two-dimensional Reactor of Hydrogen Production by Methanol and Selection of the Tube Diameter

Tow-dimensional mathematical model of hydrogen production by methanol decomposition and steam-reforming reactor was established, taking CO and CO_2 as the key components. The concentration and temperature profiles in axial and radial direction inside the reaction tubes were obtained by two-(dimensional) orthogonal collocation method. It was investigated that how the reaction-tube diameter (influenced) the performance of the reactor for methanol steam-reforming. For the equal volume of loaded (catalyst) and the same operational conditions, the temperature of the reactor outlet reduced and the radial temperature difference of catalytic bed enhanced with the increase of reaction-tube diameter, the time-(space) yield of H_2 had a dropping trend, but the number of reaction-tube needed reduced rapidly.