Columbian Chemicals Company

William R Jones, Jr

Alan C Berg

A non-cylindrical carbon black reactor for consistently and efficiently producing high tint carbon black. A plurality of flat sides defines the inner surface of the carbon black reactor. The flat sides provide a planar surface for the introduction of feedstock hydrocarbon into the reactor, thereby eliminating or substantially reducing impingement of the feedstock hydrocarbon on the inner surface of the reactor chamber and the consequent erosion of the inner surface. The flat sides of the inner surface of the reaction chamber also provide a hot gas flow with a cross-sectional area that substantially conforms to the spray pattern of the feedstock hydrocarbon, thereby providing a minimum flame length within the reactor and a more efficient use of the hot gas.

Method for consistently producing carbon black having a high tint

A carbon black reactor having an extended reaction choke substantially reduces the presence of coke and refractory grit in the carbon black product and erosion of the carbon black reactor due to impingement of particles of forming carbon black within the reactor. The carbon black reactor generally comprises a reaction choke which extends into an exit chamber to an outlet opening within the exit chamber. Hot gas and particles of forming carbon black flow through the reaction choke, through the outlet opening into the exit chamber. The outlet opening of the reaction choke is located within the exit chamber sufficiently distal from the upstream end of the exit chamber to substantially eliminate impingement of the particles of forming carbon black against the upsteam end of the exit chamber.

Carbon black reactor with a choke extension

An axial flow carbon black reactor for producing carbon black particles having a relatively narrow particle size distribution. Feedstock oil is introduced into the reactor by a spray nozzle located coaxial with the longitudinal center line of the reactor. The oil spray flows either in the countercurrent or the concurrent direction relative to the flow of hot gas through the reactor and produces an oil spray pattern covering either substantially the entire frontal area of the hot gas flow or substantially less than the frontal area. Countercurrent feedstock flow increases coverage of the gas flow area by the oil spray and narrows the particle size distribution of carbon black produced by the reactor, and concurrent feedstock flow produces the opposite result.

Axial reactor with coaxial oil injection

A non-cylindrical carbon black reactor for consistently and efficiently producing high tint carbon black. A plurality of flat sides defines the inner surface of the carbon black reactor. The flat sides provide a planar surface for the introduction of feedstock hydrocarbon into the reactor, thereby eliminating or substantially reducing impingement of the feedstock hydrocarbon on the inner surface of the reactor chamber and the consequent erosion of the inner surface. The flat sides of the inner surface of the reaction chamber also provide a hot gas flow with a cross-sectional area that substantially conforms to the spray pattern of the feedstock hydrocarbon, thereby providing a minimum flame length within the reactor and a more efficient use of hot gas.

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Monroe, LA, United States of America

William R Jones, Jr