Lumping kinetic model for catalytic pyrolysis of Daqing atmospheric residue

Key words:  catalytic pyrolysis  kinetic model  lump  sub-models  parameter estimation

Abstract:

Based on the product distribution of catalytic pyrolysis of Daqing atmospheric residue and secondary reaction results of C4 and propylene，a nine-lump reaction network was developed. Mathematical model and catalyst deactivation expression were developed based on some reasonable assumptions. The reaction rate constants of catalyst deactivation were estimated by sub-models method. Relative error and statistical analysis were used to test the model. The predicted values of diesel，gasoline, propylene and ethylene agree well with the experimental values. The results show that the rate constants estimated by sub-models method are reliable, and the sub-models method can be used to estimate the rate constants of more lumps kinetic models.