Process to produce carbon black
AssigneePhillips Petroleum Company
InventorPaul J. Cheng
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Abstract
A carbon black process is disclosed wherein a reactor is employed having in open axial alignment and operatively connected with each other an axial zone, an enlarged precombustion zone and a smaller Venturi-shaped reaction zone. Into this reactor hydrocarbon feed is axially introduced, from 90 to 30 volume percent of the gases forming the hot combustion gases are introduced tangentially into the precombustion zone, and from 10 to about 70 volume percent of these gases are introduced into the axial zone. In a preferred embodiment the carbon black reactor has an axial zone with an internal diameter of about 1.5 to about 3 times the diameter of the throat of the Venturi-shaped reaction section.
Claims7
A carbon black process wherein
- (a) a hydrocarbon feedstock liquid under normal conditions is axially introduced into a tubular reactor comprising
- an axial zone;
- an enlarged precombustion zone having a larger internal diameter than the axial zone in open communication and axial alignment operatively connected with said axial zone;
- a reaction zone formed as a Venturi nozzle-shaped chamber in open communication and axial alignment and operatively connected with said precombustion zone;
- the diameter of said axial zone being about 1.5 to about 3 times the diameter of the throat of said Venturi nozzle-shaped chamber,
- (b) free oxygen-containing gas and gaseous fuel forming hot combustion gases are introduced into said axial zone;
- (c) free oxygen-containing gases and fuel forming hot combustion gases are introduced into said precombustion zone;
- (d) about 10 to about 70 volume percent of the total of the gases forming the hot combustion gases are introduced into said axial zone in step (b);
- (e) a carbon black-containing gas is withdrawn from said reaction section;
- and
- (f) carbon black is recovered from said gas.
Dependencies are inferred from the claim text.