Abstract: The dynamic mathematical models of coke burning zone were established, and the mathematical model was solved by using Matlab programming numerical calculation method. Three different operation conditions were selected, and the coke mass ratio, oxygen content of regeneration gas, bed temperature and gas phase temperature were calculated. The influence of initial coke deposit amount or catalyst circulation rate on regeneration was studied. The results show that the coke burning rate increases with the increase of coke deposit amount, oxygen content in regenerated gas and reaction temperature, and the location of the highest temperature in the local bed moves to the direction of the outer screen with increase of initial coke deposit amount. With the increase of the catalyst cycle rate, the local highest temperature position of the bed moves downwards. The calculated results of the model were in good agreement with the measured results, which showed that the calculation method of the model had good accuracy.

Key words: counter-current continuous reforming, catalyst, coke burning, numerical analysis