The Study Of Continuous Catalytic Reforming Reactor Modeling

Catalytic reforming which produces high-octane petrol and aromatics is an important process in petrochemical industry. The application of process simulation in catalytic reforming process can bring great economic benefits. In this dissertation, the reaction mechanism of catalytic reforming process, modeling of catalytic reforming reactor and parameter estimation method was studied. A new model of catalytic reforming reactor was developed, and this model was used to simulate the reaction process and optimize the operation parameters. The main contents are as follows:1) This paper developed a new kinetic model for catalytic reforming reactions base on the lumping theory and catalytic reforming reaction mechanisms. The developed model thoroughly analyzed the mutual reaction relationships among paraffin, cycloparaffin and aromatics, and covered most related reactions included in the Continuous Catalytic Reforming progress.2) In order to resolve the challenges of the parameter estimation, the number of estimated parameters was decreased to99through reasonable supposition and the originally complex reaction network was split into several simpler sub-networks according to the number of carbon atoms. An iteration method combined of BFGS and SQP algorithms was then implemented to increase the accuracy of the parameter estimation. The developed model was used to simulate a Continuous Catalytic Reforming reactor for verifying the model accuracy. And the simulation result showed that the model successfully predicted the reformate composition in the reactor.3) The developed model was used to simulate the distribution of products、the profile of reaction temperature and the impact of industrial operation conditions. And the process optimization was studied based on the model.