【摘要】 本文建立了一个新的包括十六个集总组分的催化重整动力学模型,根据分层测定的原理,首先在压力微型反应器装置中,温度为460℃,480℃ 500℃和氢气压为8×10⁵,10×10⁵和12×10⁵ Pa 及氢油摩尔比为10的条件下研究了六碳重整反应网络的动力学模型的本征反应动力学,催化剂是 Pt-Sn/Al₂O₃。用 Marquadt 修正的高斯-牛顿法估计了反应网络中各个反应的动力学参数。结果表明,动力学常数与温度的关系能很好地符合阿累尼乌斯关系式,模型中各个组分的实验值与计算值能很好地拟合,模型能有效地预测反应网络的产物分布。更多还原

【Abstract】 A new reaction network for the catalytic reforming of hydrocarbons was proposed and an appropriate kinetic model was developed.The modified Marquadt method was used for parameter estimation.Meanwhile a new complex method was also developed for the determination of initial values of kinetic constants. The experiments were conducted in MR-80 microreactor with online GC analysis under conditions of 460.480.500 C and 8×10⁵.10×10⁵.12×10⁵ Pa hydrogen pressure.The catalyst used was Pt-Sn/Al₂O₃.All measurements were made at constant activity and selectivity. The results predicted by the model fit the experimental data fainly well.更多还原