Process for production of carbon black

Claim 1

A PROCESS FOR THE PRODUCTION OF CARBON BLACK OF HIGH SURFACE AREA WHICH IMPARTS HIGH RESISTANCE TO ABRASION TO RUBBER COMPOUNDS CONTAINING THE SAME, COMPRISING THE STEPS OF INTRODUCING A REACTANT HYDROCARBON INTO A GENERALLY CYLINDRICAL HEAT INSULATED COMBUSTION ZONE OF GREATER DIAMETER THAN LENGTH, CAUSING A MASS OF HOT GAS TO HELICALLY ENVELOP SAID REACTANT HYDROCARBON IN SAID COMBUSTION ZONE, PASSING SAID REACTANT AND ENVELOPING GAS DOWNSTREAM INTO A GENERALLY CYLINDRICAL HEAT INSULATED REACTION ZONE OF SMALLER DIAMETER THAN SAID COMBUSTION ZONE AND OF GREATER LENGTH THAN DIAMETER, AND INTRODUCING LIQUID COOLANT AS A SPRAY DIRECTLY INTO SAID REACTION ZONE AT A LOCUS IMMEDIATELY DOWNSTREAM FROM THE LOCUS WHERE THE RESULTING CARBON BLACK BECOMES TARFREE, SAID MASS OF HOT GAS FOR A REACTION ZONE OF 12INCH DIAMETER BEING FORMED BY THE TANGENTIAL INTRODUCTION INTO SAID COMBUSTION ZONE OF AT LEAST 270,000 STANDARD CUBIC FEET OF AIR PER HOUR AND A VOLUME OF FUEL GAS EQUIVALENT IN HEATING VALUE TO AT LEAST 18,000 STANDARD CUBIC FEET OF METHANE PER HOUR, SAID REACTANT HYDROCARBON BEING INTRODUCED AXIALLY DOWNSTREAM INTO SAID COMBUSTION ZONE AT A RATE WHEN MEASURED AS A LIQUID OF AT LEAST 270 GALLONS PER HOUR AT A POINT FROM 2 TO 6 INCHES DOWNSTREAM FROM THE UPSTREAM END OF SAID COMBUSTION ZONE, THE ABOVE RATES OF AIR, GAS AND HYDROCARBON INTRODUCTION FOR OTHER DIAMETER REACTION ZONES VARYING DIRECTLY AS THE 2.3 POWER OF THE RATIO OF THE DIAMETERS OF THE RESPECTIVE REACTION ZONES.