氨合成最大反应速率模型及计算

建立了计算最佳温度下的氨合成最大反应速率模型，提出了模型的数值解方法；以三套管冷管并流式氨合成塔为例，分别绘制了氨合成反应速率与氨摩尔分率、转化率和反应温度的关系曲线，并与实际反应曲线进行了比较，结果表明，本文所绘制的曲线不仅可以直观地反映氨合成最大反应速率随氨摩尔分率(或转化率)和反应温度变化的动力学规律，而且可以表示出催化剂床层内实际反应速率与最大反应速率的偏离程度。

Maximal Reaction Rate Model and Computation in Ammoina Synthesis

The mathematical model was established for calculating the maximum reaction rate of ammonia synthesis at optimum reaction temperature and the value solution method for the model was presented. Taking typical three-tube (cooling tube) co-current ammonia synthesis converter as an example, the relative curves showing the relation of ammonia synthesis reaction rate with ammonia mole fraction, conversion rate and reaction temperature were separately drawn, moreover, comparison was made with the actual reaction curve, the result indicates that not only the curve drawn in this paper can directly show the dynamic rule of maximal reaction rate of ammonia synthesis, depending on variation of ammonia mole fraction, (or conversion rate) and reaction temperature, but also can show the deviation degree between the actual reaction rate and maximal reaction rate in catalyst bed.