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AssigneeMonolith Materials, Inc.
InventorsAlexander F. HOERMANN, Roscoe W. TAYLOR, Nils Severin MYKLEBUST
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A method and apparatus for making carbon black having increased surface area, reduced grit and/or reduced extract levels. A plasma gas is flowed into a plasma forming region to form a plasma. The plasma then flows through a throat region which is narrower than the plasma forming section, which is connected to a separate carbon black forming region. This causes the plasma to accelerate and become turbulent prior to the exit point in the throat region. The carbon black forming feedstock is injected into the turbulence created by the throat region at a point above, at or near the exit point, resulting in the formation of a carbon black in the separate carbon black forming region. The throat region and/or injector region can be cooled, e.g., water plasma gas cooled.
A method of making carbon black comprising, flowing a plasma gas into a plasma forming region and forming a plasma, flowing the plasma through a throat region which is connected to a carbon black forming region and which is narrower than the plasma forming region causing the plasma to accelerate and become turbulent within the throat region absent turbulence caused in the plasma forming region, injecting carbon black forming feedstock into the throat region, resulting in the formation in the carbon black forming region of a carbon black with increased surface area, reduced grit and/or reduced extract levels.
An apparatus for making carbon black comprising, a plasma forming section having a plasma gas forming entry port, plasma forming electrodes, and a formed plasma exit port in fluid flow communication with a carbon black forming section, a throat section connecting the plasma forming section to the carbon black forming section, the throat section being narrower than the plasma forming section causing the plasma formed to accelerate and become turbulent, maintain the turbulence, or become more turbulent in the throat region, and a carbon black forming feedstock injector within the throat section.
Dependencies are inferred from the claim text.