Process for the production of gasoline through thermal and catalytic cracking

Claim 1

PROCESS FOR THE PRODUCTION OF HIGH OCTANE OLEFINIC GASOLINE WHICH COMPRISES THERMALLY CRACKING A HYDROCARBON OIL, SEPARATING FROM THE CRACKED PRODUCT AN OLEFINIC THERMAL GASOLINE, VALORIZING AND SUPERHEATING SAID OLEFINIC THERMAL GASOLINE, PRODUCING A DISPERSION OF FINELY DIVIDED FRESHLY REGENERATED CRACKING CATALYST IN SUPERHEATED STEAM AND PASSING SAID DISPERSION AS A RAPIDLY MOVING FREE SUSPENSION THROUGH A NARROW CONFINED VERTICAL PATH TO A SEPARATING ZONE, INJECTING SAID VAPORIZED AND SUPERHEATED OLEFINIC GASOLINE VAPORS INTO SAID CONFINED PATH NEAR THE TOP THEREOF AT A POINT SUFFICIENTLY CLOSE TO SAID SEPARATING ZONE THAT THE RESIDENCE TIME OF THE SAID GASOLINE VAPORS IN SAID PATH IS BETWEEN 0.2 AND 0.6 SECOND, MAINTAINING THE TEMPERATURE OF THE SAID VAPORS IN SAID PATH BETWEEN 950* ;. AND 1100* F. AND REGULATING THE QUANTITY OF SAID CATALYST DISPERSED IN SAID STEAM SUCH THAT THE WEIGHT RATIO OF CATALYST TO OLEFINIC GASOLINE IS BETWEEN ABOUT 2 AND 8.