Patent ID: 6358487
Filing Date: 2002-03-19
Classification: C01P,C09C

Abstract:
A method for producing a carbon black, the method comprising using a producing Furnace havinga first reaction zone wherein a high temperature combustion gas stream is formed, a second reaction zone having a choke part wherein a hydrocarbon feed stock is mixed with the obtained high temperature combustion gas stream to produce a carbon black, and a third reaction zone located downstream to the second reaction zone for terminating the reaction, wherein the choke part length is at least 800 nm; the choke part diameter is at most 170 mm; the oxygen concentration in the combustion gas at the part where the feed stock is introduced is at most 3 vol %; and the obtained carbon black has an average particle size of at most 25 nm, a DÂ½/Dmod. ratio of at most 0.6 and a D75/Dmod ratio of at most 1.3.