Phillips Petroleum Company

Gravley, Mark L.

Henderson, E. Webb

Mark L Gravley

E Webb Henderson

Mark E Kertok

A carbon black reactor is characterized by a converging zone, a throat, a first reaction zone and a second reaction zone serially connected. Oil can be injected both upstream and downstream of the throat. Annular walls connect the throat with the first reaction zone and the first reaction zone with the second reaction zone.

Apparatus for producing carbon black

Process for producing carbon black

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.

Carbon black reactor having a reactor throat

Vanes operatively attached to external sleeves are provided in a conduit to implement on the outside of the conduit change in the swirl angle of incoming fluids.

Carbon black reactor

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 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.

Carbon blacks

Polytetrafluoroethylene bags used in solids filtering units are preshrunk to preclude tearing or ripping of the bags.

Pretreatment of polytetrafluoroethylene filter bags

A filter bag which, when installed, exhibits an improved seal between the thimble and the bag is provided by (1) encasing the ring member in fabric, (2) by incorporating a fabric sleeve concentric with the cuff of the bag or (3) by incorporating two ring members in the bag cuff.

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Bartlesville, OK, United States of America

Mark L Gravley