FCC反应机理与分子水平动力学模型研究 III.重油催化裂化模型的建立

FCC MODELING BASED ON MOLECULAR REACTION DYNAMICS Part 3 Development of the lumped kinetic model for heavy oil cracking

将一种基于催化裂化反应机理的动力学模型应用于重油催化裂化过程,实验确立了几种典型的催化裂化催化剂的反应速率常数。模拟实验的结果表明,通过实验确定的各反应速率常数不仅可以对重油催化裂化产品的产率分布进行模拟和预测,而且可以较为准确地对产品族组成进行模拟和预测。该模型包含十四个集总共24个反应速率常数,易于在提升管反应器上应用。

A molecular kinetic model based on FCC reaction mechanism was applied to heavy oil catalytic cracking. Kinetic constants of the model for three typical FCC catalysts were determined by experimental results. The simulation results showed that the product yields and the group compositions of the products could be predicted by the model accurately. Said model contained fourteen lumps and twenty-four kinetic constants, and was convenient to be used in fluid dynamic computing of riser.