Patent ID: 8871173

Claim:
A method for producing carbon black comprising: introducing a heated gas stream into a carbon black reactor; supplying at least one carbon black-yielding feedstock to at least one heater; preheating said at least one carbon black-yielding feedstock in said at least one heater to a temperature of greater than 300° C. to provide a preheated carbon black-yielding feedstock, wherein (a) the at least one carbon black-yielding feedstock has a velocity through said at least one heater of about 1 msec or higher at the smallest cross-sectional area of a feedstock line in said heater, wherein velocity is an average velocity calculated based on a feedstock density measured at 60° C. at 1 atm and (b) the at least one carbon black-yielding feedstock has a first feedstock residence time in said heater of less than about 120 minutes; supplying said preheated carbon black-yielding feedstock having said temperature of greater than 300° C. to at least one feedstock introduction point to the carbon black reactor, wherein said preheated carbon black-yielding feedstock having said temperature of greater than 300° C. has a second feedstock residence time of from exiting said at least one heater to the introduction point to said carbon black reactor of less than about 120 minutes; and wherein said first feedstock residence time and said second feedstock residence time combined are 120 minutes or less; whereby vapor film formation is controlled in said at least one heater and prior to said supplying to said carbon black reactor; combining at least said preheated carbon black-yielding feedstock through the at least one introduction point to said carbon black reactor with the heated gas stream to form a reaction stream in which carbon black is formed in said carbon black reactor; and recovering the carbon black in the reaction stream, and wherein said carbon black is furnace carbon black and said carbon black reactor is a furnace carbon black reactor, and said carbon black-yielding feedstock has an initial boiling point of from about 160° C. to about 600° C.