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化工学报  2015 

碳二加氢等温反应过程模拟与操作参数优化

DOI: 10.11949/j.issn.0438-1157.20141562, PP. 366-372

Keywords: 碳二加氢,计算流体力学,遗传算法,优化

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Abstract:

以碳二加氢等温管式固定床反应器为研究对象,利用计算流体力学(CFD)方法建立了与外界有热量交换的二维均相流反应器模型,通过添加气固能量方程,建立了多孔介质区内部热交换与气固耦合传热的两温度模型。采用遗传算法对反应的动力学参数进行了拟合,并以加氢选择性最优为目标函数,对碳二加氢反应的入口氢炔比与反应器的冷却温度进行优化,得到最优氢炔比为1.18,最优的冷却温度为334.66K。最后根据模拟与优化结果,分析了氢炔比和冷却温度对加氢反应选择性的影响,对提高加氢反应器的操作性能具有重要的意义。

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