Carbon black reactor having a reactor throat

Details Carbon black reactor having a reactor throat Carbon black reactor having a reactor throat

1985-01-22

1988-08-23

Richman, Barry S.

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Pigment or carbon black producer

422150, 422158, F01C 2100

Patent

active

047659645

ABSTRACT:
A new reactor for the production of carbon black, a method for the production of carbon black, and a carbon black are disclosed. The carbon blacks are characterized by a surface area preferably in the range of 70 to 150 m.sup.2 /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.

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