C - Chemistry – Metallurgy – 09 – C
Patent
C - Chemistry, Metallurgy
09
C
23/307
C09C 1/50 (2006.01)
Patent
CA 1258157
Abstract of the Disclosure A new reactor for the production of carbon black, a new method for the production of carbon black, and a new carbon black are disclosed. The carbon blacks are characterized by a surface area preferably in the range of 70 to 150 m2/g and "G" values of either less than 1.20 or greater than 1.85, corresponding to very narrow or very broad aggregate size distributions, respectively. The reactor is preferably for axial flow of combustion gases and is characterized by serial arrangement of a cylindrical combustion zone, a frustoconical converging zone, a throat, an abrupt diverging zone and a cylindrical pyrolysis zone. In certain aspects of the invention, the combustion gases are formed by combusting low BTU fuel and forcing these gases through the throat at a velocity approaching Mach 1. In one method of carbon black production, the feedstock is introduced into the converging zone. In another method, it is introduced as a spray. In other methods, the feedstock is introduced with upstream or downstream velocity components.
458146
Gravley Mark L.
Henderson Eulas W.
Osler Hoskin & Harcourt Llp
Phillips Petroleum Company
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