十三集总催化重整反应动力学模型研究

STUDY ON 13 LUMPED KINETIC MODEL FOR NAPHTHA CATALYTIC REFORMING

根据集总理论 ,从催化重整反应规律出发 ,提出了包含十三个集总组分的催化重整反应模型。该模型将重整物料按分子大小集总为C6 ,C7,C8和C+ 9组分 ,每一个碳数的化合物又划分为烷烃、环烷烃和芳烃三个集总 ,裂化产物C- 5组分作为一个集总。集总组分之间主要发生烷烃脱氢环化、环烷烃脱氢芳构化和加氢裂化反应。根据重整反应特点建立了相应的动力学模型 ,并编制了工业重整反应器的模拟计算软件 ,可预测催化重整产物组成、产品产率和重整反应器温降 ,计算结果与生产数据基本吻合。

According to the guiding principles of lumping theory,and based on the reaction mechanism of naphtha catalytic reforming,a kinetic model with 13 pseudo components was put forward,in which the reaction species were delumped into paraffins,naphthenes and aromatics for each carbon number hydrocarbon compounds of C 6,C 7,C 8 and C + 9,and C - 5 as another lumped component.There are three dominant reactions in the reaction network.That is dehydrogenation and cyclization of paraffins,dehydrogenation and aromatization of naphthenes,and cracking reaction to form C 5 lighter products.A dynamic model was established based on the characteristics of reforming reactions and the simulating calculation softwares for commercial reforming reactor were developed to predict the reformate compositions,product yields,and the pressure drop.The calculated results can fit the production data satisfactorily.