苯胺加氢固定床反应器的优化设计与操作

Optimal design and operation of the reactor for hydrogenation of aniline

目的 对苯胺催化加氢制环己胺列管式固定床反应器进行优化设计。方法 建立苯胺催化加氢制环己胺固定床反应器的二维拟均相模型,并用数值计算软件MathConnex对模型进行求解。结果 实现了苯胺催化加氢制环己胺列管式固定床反应器的优化设计与操作。结论 采用二维拟均相模型可有效地描述苯胺催化加氢制环己胺列管式固定床反应器的特征;影响转化率的主要因素是反应器的轴向温度分布,反应器的管径和氢气与苯胺物质的量对反应器轴向温度分布有较大影响,是设计反应器和优化操作的重要参量;根据计算结果设计的反应器在优化条件下操作稳定,能耗降低,热点温度远低于采用导热油冷却的反应器,产品的副产物少,收率可达95%以上,具有较好的经济效益。

AimTo realize optimal design and operation of the fixed tube array reactor for catalytic hydrogenation of aniline.MethodsSet up the pseudo-homogenous,two-dimension model of fixed tube array reactor for catalytic hydrogenation of aniline and then the model was solved by MathConnex.ResultsThe optimal design and operation of the fixed tube array reactor for catalytic hydrogenation of aniline was realized.ConclusionThe model could describe the character of the reactor in effect.The main factor influencing the convertion was the axial temperature distribution. The reactor tube diameter and the ratio of hydrogen to aniline are the main factor influencing the axial temperature distribution.The reactor designed based upon the calculating result is of good economical value.