Systems, lances, nozzles, and methods for powder injection resulting in reduced agglomeration

Abstract

A lance for powder injection resulting in reduced agglomeration, including an outer tubular member having a first end, a second end, and an inner flowpath extending from the first end to the second end; an inner tubular member having a first end, a second end, and a, inner flowpath extending from the first end to the second end, the inner tubular member disposed within the inner flowpath of the outer tubular member for providing an annular space between the outer tubular member and the inner tubular member; and one or more orifices in the inner tubular member for providing a flowpath between the annular space and the inner flowpath of the inner tubular member. Additional lances, systems, and methods are also included.

What is claimed is: 
     
         1 . A nozzle for powder injection resulting in reduced agglomeration and increased distribution, comprising:
 a tubular member having a sealed first end, a second end, and an inner flowpath extending from the sealed first end to the second end, the tubular member having one or more orifices disposed therethrough; and   one or more flow agitation baffles disposed a distance about the outer surface of tubular member substantially proximal to the one or more orifices.   
     
     
         2 . The nozzle for powder injection as recited in  claim 1 , further comprising: one or more supports for supporting the one or more flow agitation baffles the distance about the outer surface of the tubular member. 
     
     
         3 . The nozzle for powder injection as recited in  claim 1 , wherein each of the one or more flow agitation baffles creates a turbulent flow profile to at least two of the one or more orifices. 
     
     
         4 . The nozzle for powder injection as recited in  claim 1 , wherein the at least one or more flow agitation baffles are disposed linearly along the longitudinal axis of the outer surface of the tubular member. 
     
     
         5 . The nozzle for powder injection as recited in  claim 1 , wherein the at least one or more flow agitation baffles are disposed in different positions about the radius of the outer surface of the tubular member. 
     
     
         6 . The nozzle for powder injection as recited in  claim 1 , wherein the one or more flow agitation baffles have a profile selected from the group consisting polygonal forms, symmetrical forms, and asymmetrical forms. 
     
     
         7 . The nozzle for powder injection as recited in  claim 2 , wherein one of the one or more supports is disposed between the one or more orifices. 
     
     
         8 . The nozzle for powder injection as recited in  claim 1 , wherein one of the form and shape of the flow agitation baffles is selected from the group consisting of planar, curved, and curvilinear. 
     
     
         9 . A nozzle for powder injection resulting in reduced agglomeration, comprising:
 a tubular member having a sealed first end, a second end, and an inner flowpath extending from the first sealed end to the second end, the tubular member having an orifice disposed therethrough proximal to the sealed first end; and   a dispersion plate disposed a distance about the outer surface of tubular member substantially proximal to the orifice.   
     
     
         10 . The nozzle for powder injection as recited in  claim 9 , further comprising: a support for supporting the dispersion plate a distance about the outer surface of the tubular member. 
     
     
         11 . The nozzle for powder injection as recited in  claim 9 , wherein the dispersion plate creates a turbulent flow profile to the orifice. 
     
     
         12 . The nozzle for powder injection as recited in  claim 9 , wherein the dispersion plate has a profile selected from the group consisting polygonal forms, symmetrical forms, and asymmetrical forms. 
     
     
         13 . The nozzle for powder injection as recited in  claim 9 , wherein one of the form and shape of the dispersion plate is selected from the group consisting of planar, curved, and curvilinear. 
     
     
         14 . A powdered activated carbon injection unit, comprising:
 a source of the process gas; and a nozzle in contact with the process gas having a tubular member having a sealed first end, a second end, and an inner flowpath extending from the sealed first end to the second end, the tubular member having one or more orifices disposed therethrough; and   one or more flow agitation baffles disposed a distance about the outer surface of tubular member substantially proximal to the one or more orifices.   
     
     
         15 . The powdered activated carbon injection unit as recited in  claim 14 , further comprising: one or more supports for supporting the one or more flow agitation baffles the distance about the outer surface of the tubular member. 
     
     
         16 . The powdered activated carbon injection unit as recited in  claim 14 , wherein each of the one or more flow agitation baffles creates a turbulent flow profile to at least two of the one or more orifices. 
     
     
         17 . A powdered activated carbon injection unit, comprising:
 a source of the process gas; and a nozzle in contact with the process gas having a tubular member having a sealed first end, a second end, and an inner flowpath extending from the first sealed end to the second end, the tubular member having an orifice disposed therethrough proximal to the sealed first end; and   a dispersion plate disposed a distance about the outer surface of tubular member substantially proximal to the orifice.   
     
     
         18 . The powdered activated carbon injection unit as recited in  claim 17 , further comprising: a support for supporting the dispersion plate a distance about the outer surface of the tubular member. 
     
     
         19 . The powdered activated carbon injection unit as recited in  claim 17 , wherein the dispersion plate creates a turbulent flow profile to the orifice.