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通过平衡闪蒸模拟催化剂孔道液体组成、烯烃物理吸附和虚拟烯烃分压等方法,考察了化学反应以外的非本征因素对FT合成动力学模型的校正.平衡闪蒸模拟催化剂孔道中烯烃组成的校正计算结果表明,在烯烃浓度出现峰值前,溶解度效应对烯烃再吸附及参与二次反应起主导作用,而在烯烃浓度出现峰值后,烯烃的扩散和物理吸附等效应可能起主导作用.分析烯烃添加的反应器模拟结果发现,考虑烯烃物理吸附作用的动力学模型校正方法不能够正确反映烯烃添加实验的定性规律,而虚拟烯烃分压校正方法能够正确反映烃分布规律并可定量预测烯烃添加对产物分布规律的影响,这对需要尾气循环的FT合成工业操作具有重要意义.
The equilibrium kinetic model of FT synthesis was investigated by extrinsic factors such as liquid composition, physical adsorption of olefins and the partial pressure of virtual olefins, etc. The effects of equilibrium flash evaporation on the formation of olefin in the pores of catalyst The calibration results show that the solubility effect plays a dominant role in the re-adsorption of olefins and participation in the secondary reaction before the peak of the olefin concentration, and the effect of olefin diffusion and physical adsorption may play a dominant role after the peak of the olefin concentration. The simulation results of the reactor added showed that the kinetic model calibration method considering the physical adsorption of olefins did not correctly reflect the qualitative law of olefin addition experiments. However, the method of partial pressure correction of virtual olefins can correctly reflect the distribution of hydrocarbons and quantitatively predict the addition of Product distribution of the impact of the need for the exhaust cycle of FT synthesis industrial operations of great significance.