Abstract: Carbon black is produced in a generally cylindrical reactor in which a hydrocarbon feed oil is introduced at one end generally along the axis of the reactor. A gaseous fuel and oxygen are introduced in directions generally parallel to the axis of the reactor to surround the feed oil. Inert gases are introduced into the reactor to surround the central core. Properties of the carbon black can be regulated by introducing the oxygen at a relatively high velocity and adjusting the rate at which the inert gases are introduced.

Abstract: A process for pelleting carbon black is disclosed wherein flocculent carbon black is pelleted in the conventional manner by mixing the carbon black with an aqueous pelleting liquid and stirring the mixture to form water-containing carbon black pellets. These water-containing carbon black pellets are then predried conventionally in order to remove a first major portion of the aqueous pelleting solution therefrom. For the removal of a remaining minor second portion of said aqueous solution, the carbon black pellets are subjected to a microwave irradiation.

Abstract: A method and apparatus for producing carbon black in which a first reactant mass is formed and thoroughly mixed and passed axially through the reactor, a second mass of hot combustion gases being passed helically to the axially flowing mass.

Abstract: Various carbon black reactors having triangular cross-sections generate a highly turbulent flow of the reactants therein to produce high-tint carbon black.

Abstract: A tubular carbon black reactor having means for axial introduction of hydrocarbon feed or oxidant on both ends, means for fuel introduction at approximately the center of the reactor, a plurality of means for tangential introduction of oxidant equally distributed over the entire length of the reactor and carbon black withdrawal means located proximate to the locus of introduction of the hydrocarbon feed at both ends.