Process and apparatus for producing carbon blacks

Abstract

The present invention provides processes for introducing a fluid stream into a carbon black reactor and for producing carbon black. According to the present invention, a fluid stream comprising an oxidant, nitrogen, hydrogen, a hydrocarbonaceous material or mixtures thereof is introduced into the effluent flowing through a carbon black reactor in an axial direction.

1 - 10 . (canceled)  
     
     
         11 . A modular apparatus for producing carbon black comprising: 
 a combustion zone having an upstream and a downstream end and at least one port to allow the introduction of a fuel and an oxidant;    a zone of converging diameter having an upstream and a downstream end and converging from the upstream end towards the downstream end, the upstream end being connected to the downstream end of the combustion zone;    a transition zone having an upstream and a downstream end, the upstream end being connected to the downstream end of the zone of converging diameter, the transition including at least one port to allow the introduction of a feedstock;    an apparatus for introducing a fluid stream into the reactor in a direction axial to the flow of a process stream in the reactor, the apparatus having an upstream and a downstream end, the upstream end being connected to the downstream end of the transition zone;    a reaction zone having an upstream and a downstream end, the upstream end being connected to the downstream end of the transition zone or zones;    a quench zone having an upstream and a downstream end, the upstream end being connected to the downstream end of the reaction zone, the quench zone including at least one port to allow the introduction of a quenching fluid; and    apparatus for separating and collecting carbon black connected to the downstream end of the quench zone or zones.    
     
     
         12 . The modular apparatus for producing carbon black of  claim 11  wherein the apparatus for introducing a fluid stream into the reactor in an axial direction comprises a hollow vessel; at least one inlet for introducing a fluid stream into the interior of the vessel and an outlet to allow the fluid stream to exit from the vessel.  
     
     
         13 . The apparatus of  claim 12  wherein the outlet comprises an annulus.  
     
     
         14 . The apparatus of  claim 12  wherein the inlet of the hollow vessel is disposed radially to the outlet to produce an outlet fluid stream without significant swirls.