裂化催化剂再生动力学简单反应模型与串连反应模型的关系及其误差

THE INTERNAL RELATION BETWEEN TWO MODELS OF CRACKING CATALYST REGENERATION AND THE SIMPLE REACTION AND THE ERROR

微球裂化催化剂的再生(烧碳)反应可用简单反应和串连反应两种模型描述。本文分析了两种模型的内在联系,讨论了简单反应模型的适用条件及其引入的误差。对CRC-1催化剂的再生反应,低于700℃时,使用简单反应模型误差较小(与串连反应模型结果较好地吻合);高于700℃时,误差较大。

For the regeneration of microspheric cracking catalysts,there are two models, i.e. series reaction model and simple reaction model.The relations between these two models and the error of the simple reaction model were studied. For the regeneration of CRC-1 catalysts, little difference was found between these two models at a temperature <C700℃. At a temperature >700℃, the series reaction model is more reasonable and the error of the simple reaction model is large. The cause of the error was discussed and a method of error estimation was proposed.