Carbon black production

Chemistry of inorganic compounds – Carbon or compound thereof – Elemental carbon

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Details

423450, C01B 3102, C09C 148

Patent

active

042255708

ABSTRACT:
Carbon black is produced in a reactor by introducing a carbonaceous feed material into one end of the reactor. One or more streams of hot gases are introduced in a direction generally tangential to the side wall of the precombustion zone of the reactor and in a plane generally perpendicular to the longitudinal axis of the reactor to supply heat to decompose the feed material to produce carbon black. This operation is continued until the pressure drop across the reactor reaches a preselected higher value. Thereafter, the stream or streams of hot gases are introduced tangentially to the side wall of the precombustion zone but with each stream being in a respective plane at an angle less than 90.degree. to the longitudinal axis of the reactor and in a downstream direction with respect to the longitudinal axis of the reactor so as to reduce the pressure drop to a lower value.

REFERENCES:
patent: 2600954 (1952-06-01), Krejci
patent: 2656254 (1953-10-01), Heller
patent: 2769692 (1956-11-01), Heller
patent: 3256066 (1966-06-01), Higgins

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