Cracking with catalyst having controlled residual coke

Claim 1

A METHOD FOR CRACKING HYDROCARBONS IN THE PRESENCE OF FINELY DIVIDED SOLID CRYSTALLINE ALUMINOSILICATE CATALYTIC MATERIAL WHICH COMPRISES FORMING A RELATIVELY DILUTE SUSPENSION OF CRYSTALLINE ALUMINOSILLICATE CATALYTIC MATERIAL IN HYDROCARBON VAPORS AT A TEMPERATURE OF AT LEAST ABOUT 850*F., PASSING THE THUS FORMED SUSPENSION THROUGH AN ELONGATED CONFINED REACTION ZONE UNDER CONDITIONS TO ACHIEVE AT LEAST ABOUT 50% CONVERSION OF FRESH FEED, SEPARATING SPENT CATALYTIC MATERIAL WITH CARBON DEPOSITS THEREON FROM SAID CONVERSION PRODUCTS, COMBINING SEPARATED SPENT CRYSTALLINE ALUMINOSILICATE CATALYTIC MATERIAL WITH A QUANTITY OF HOT REGENERATED CATALYTIC MATERIAL IN AN AMOUNT SUFFICIENT TO PROVIDE A MIXTURE OF CATALYTIC MATERIAL AT A TEMPERATURE OF AT LEAST ABOUT 1000*F., REGENERATING ALL OF SAID MIXTURE OF CATALYTIC MATERIAL WITH OXYGEN CONTAINING GASEOUS MATERIAL UNDER CONDITIONS TO RETAIN UP TO ABOUT 0.5% BY WEIGHT OF RESIDUAL COKE ON SAID CATALYTIC MATERIAL WITHOUT EXCEEDING A TEMPERATURE OF ABOUT 1500* F., RECYCLING A SUFFICIENT PORTION OF SAID REGENERATED CATALYTIC MATERIAL TO FORM THE ABOVE MIXTURE WITH SPENT CATALYTIC MATERIAL AT A TEMPERATURE OF AT LEAST ABOUT 1000*F., COOLING A PORTION OF SAID REGENERATED CATALYTIC MATERIAL, AND EMPLOYING THE THUS COOLED CATALYTIC MATERIAL TO FORM SAID RELATIVELY DILUTE SUSPENSION AT A TEMPERATURE OF AT LEAST ABOUT 850*F.

Claim 2

A METHOD FOR CRACKING HYDROCARBONS IN THE PRESENCE OF FINELY DIVIDED SOLID CRYSTALLINE ALUMINOSILICATE CATALYTIC MATERIAL WHICH COMPRISES FORMING A RELATIVELY DILUTE SUSPENSION OF CRYSTALLINE ALUMINOSILLICATE CATALYTIC MATERIAL IN HYDROCARBON VAPORS AT A TEMPERATURE OF AT LEAST ABOUT 850*F., PASSING THE THUS FORMED SUSPENSION THROUGH AN ELONGATED CONFINED REACTION ZONE UNDER CONDITIONS TO ACHIEVE AT LEAST ABOUT 50% CONVERSION OF FRESH FEED, SEPARATING SPENT CATALYTIC MATERIAL WITH CARBON DEPOSITS THEREON FROM SAID CONVERSION PRODUCTS, COMBINING SEPARATED SPENT CRYSTALLINE ALUMINOSILICATE CATALYTIC MATERIAL WITH A QUANTITY OF HOT REGENERATED CATALYTIC MATERIAL IN AN AMOUNT SUFFICIENT TO PROVIDE A MIXTURE OF CATALYTIC MATERIAL AT A TEMPERATURE OF AT LEAST ABOUT 1000*F., REGENERATING ALL OF SAID MIXTURE OF CATALYTIC MATERIAL WITH OXYGEN CONTAINING GASEOUS MATERIAL UNDER CONDITIONS TO RETAIN UP TO ABOUT 0.5% BY WEIGHT OF RESIDUAL COKE ON SAID CATALYTIC MATERIAL WITHOUT EXCEEDING A TEMPERATURE OF ABOUT 1500* F., RECYCLING A SUFFICIENT PORTION OF SAID REGENERATED CATALYTIC MATERIAL TO FORM THE ABOVE MIXTURE WITH SPENT CATALYTIC MATERIAL AT A TEMPERATURE OF AT LEAST ABOUT 1000*F., COOLING A PORTION OF SAID REGENERATED CATALYTIC MATERIAL, AND EMPLOYING THE THUS COOLED CATALYTIC MATERIAL TO FORM SAID RELATIVELY DILUTE SUSPENSION AT A TEMPERATURE OF AT LEAST ABOUT 850*F.