Carbon black process

Claim 1

A PROCESS FOR MAKING FURNACE CARBON BLACK COMPRISING THE STEPS OF INJECTING A HYDROCARBON FLUID AXIALLY INTO ONE END OF A GENERALLY CYLINDRICAL REACTION ZONE, INJECTING A FIRST ANNULAR BLANKET OF INERT GAS AT SAID END AROUND SAID INJECTED HYDROCARBON TO REDUCE CARBONACEOUS DEPOSITS IN SAID ZONE, INTRODUCING A SECOND ANNULAR BLANKET OF GAS CONTAINING SUFFICIENT FREE OXYGEN AND A FLUID FUEL TO MAINTAIN COMBUSTION IN SAID REACTION ZONE AT SAID END AROUND SAID INJECTED HYDROCARBON AND SAID ANNULAR BLANKET OF INERT GAS, MAINTAINING COMBUSTION IN SAID REACTION ZONE WHEREBY SOME OF SAID INJECTED HYDROCARBON IS CONVERTED BY SAID COMBUSTION IN CARBON BLACK, HEATING THE EXTERIOR OF SAID ZONE AN AMOUNT SUFFICIENT TO SUBSTANTIALLY INCREASE THE YIELD OF CARBON BLACK BY BURNING A SECOND FLUID FUEL ADJACENT THE SAME WITHOUT INTRODUCING THE ADDITIONAL PRODUCTS OF COMBUSTION FROM SAID SECOND FUEL INTO SAID REACTION ZONE, FLOWING THE RESULTING GASES AND CARBON BLACK FROM THE OTHER END OF SAID REACTION ZONE, AND SEPARATING SAID CARBON BLACK THEREFROM.