Patent ID: 8551326
Filing Date: 2013-10-08
Classification: C10G,Y02P

Abstract:
1. Process for catalytic cracking of a hydrocarbon feedstock with a boiling point that is greater than 350° C., implementing a fine control of the residual coke level on the regenerated catalyst, whereby said process comprises: reacting in at least one reaction zone that brings into contact, in a transported bed, the hydrocarbon feedstock to be treated and the catalyst, and regenerating the coked catalyst used in the reaction in a regeneration zone at the output of the reaction zone, whereby said regeneration zone is divided into a first regeneration stage ( whereby the catalyst is transported between the first regeneration stage ( whereby the regenerated catalyst that is obtained following the mixing of the partially regenerated and totally regenerated catalysts has a residual coke rate that is greater than 0.15%, whereby said coke rate is obtained by the control of the circulation of the totally regenerated catalyst that is obtained at the output of the second regeneration stage, such that: a portion of the catalyst from the first regeneration stage ( the catalyst from the second regeneration stage ( wherein said dedicated fluidized chamber ( sending the regenerated catalyst from the dedicated fluidized chamber (