Fuel burner

Abstract

A fuel burner comprises a body including at least one burner port. Embodiments of the fuel burner can include a fluid coolant system, a mixing device adapted to mix a fuel and oxidizer and/or an apparatus adapted to prevent flashback through the at least one burner port.

1 . A fuel burner comprising: 
 a body including at least one burner port, at least a portion of the body is fabricated from a material having a thermal conductivity greater than about 80 W/mK; and    a fluid coolant system for removing heat from the body,    wherein the fuel burner is capable of producing a flame having a temperature of at least about 2000° C.    
     
     
         2 . The fuel burner of  claim 1 , wherein the thermal conductivity is greater than about 100 W/mK.  
     
     
         3 . The fuel burner of  claim 2 , wherein the material comprises aluminum.  
     
     
         4 . The fuel burner of  claim 1 , wherein the burner is capable of producing a flame having a laminar flow portion with a length of at least about 5 centimeters.  
     
     
         5 . The fuel burner of  claim 1 , wherein the burner is adapted to operate at a power output of greater than about 75 KW.  
     
     
         6 . The fuel burner of  claim 1 , wherein the burner is adapted to operate with an average flow velocity of a fuel mixture through the at least one burner port is less than about 40 m/s.  
     
     
         7 . The fuel burner of  claim 1 , wherein the burner includes a burner face surface including an opening of the at least one burner port, a peripheral surface circumscribing the burner face surface, and a chamfer surface extending between at least a portion of the burner face surface and the peripheral surface.  
     
     
         8 . The fuel burner of  claim 1 , wherein the fluid coolant system includes a coolant passage positioned less than about 1 centimeter from a peripheral burner port of the at least one burner port.  
     
     
         9 . The fuel burner of  claim 1 , wherein the fluid coolant system includes a coolant passage circumscribing a substantial portion of the at least one burner port.  
     
     
         10 . The fuel burner of  claim 9 , wherein the at least one burner port comprises a plurality of burner ports.  
     
     
         11 . The fuel burner of  claim 1 , wherein the at least one burner port comprises a plurality of burner ports.  
     
     
         12 . The fuel burner of  claim 11 , wherein the plurality of burner ports include at least a first set of burner ports and a second set of burner ports, and the fluid coolant system includes a coolant passage extending through a portion of the body that extends between the first set of burner ports and the second set of burner ports.  
     
     
         13 . A fuel burner comprising: 
 a body including a cavity and at least one burner port in communication with the cavity;    an apparatus positioned in the cavity and adapted to prevent flashback through the at least one burner port,    wherein a fuel mixture is adapted to pass through the apparatus, the cavity and the at least one burner port in use.    
     
     
         14 . The burner of  claim 13 , wherein the apparatus comprises a member extending across the cavity, the member including a plurality of passages for the fuel mixture.  
     
     
         15 . The burner of  claim 14 , wherein the member comprises a plate and the plurality of passages comprises through passages extending through the plate.  
     
     
         16 . A fuel burner comprising: 
 a body including a cavity and at least one burner port in communication with the cavity; and    a mixing device positioned in the cavity and adapted to mix a fuel and oxidizer prior to flowing through the at least one burner port,    wherein the mixing device defines a fluid path having a plurality of angular turns.    
     
     
         17 . The fuel burner of  claim 16 , wherein the mixing device comprises a flow divider.  
     
     
         18 . The fuel burner of  claim 17 , wherein the flow divider is adapted to divide an upstream flow into two downstream flows traveling in substantially opposite directions.  
     
     
         19 . The fuel burner of  claim 17 , wherein the flow divider comprises at least a first plate and a second plate offset from the first plate in a direction towards the at least one burner port.  
     
     
         20 . The fuel burner of  claim 19 , wherein the first plate has at least one aperture.  
     
     
         21 . The fuel burner of  claim 20 , wherein the second plate includes a plurality of apertures greater in number than the at least one aperture of the first plate.  
     
     
         22 . The fuel burner of  claim 21 , wherein the plurality of apertures of the second plate are not axially aligned with any aperture of the at least one aperture of the first plate.  
     
     
         23 . The fuel burner of  claim 16 , wherein the mixing device further comprises a plate positioned within the cavity, wherein the plate includes a peripheral edge that forms a channel with the body.  
     
     
         24 . The fuel burner of  claim 23 , wherein the channel defines a portion of the fluid path having at least one angular turn of at least 90 degrees.  
     
     
         25 . A fuel burner comprising: 
 a body including a cavity and at least one burner port in communication with the cavity, at least a portion of the body fabricated from a material having a thermal conductivity greater than about 80 W/mK;    an apparatus positioned in the cavity and adapted to prevent flashback through the at least one burner port; and    a fluid coolant system adapted to remove heat from the body, wherein the fluid coolant system is adapted to prevent the body from melting in use.    
     
     
         26 . The fuel burner of  claim 25 , further comprising a mixing device positioned in the cavity and adapted to mix an oxygen-fuel mixture prior to flowing through the apparatus and the at least one burner port, wherein the mixing device defines a fluid path having a plurality of angular turns.  
     
     
         27 . A fuel burner comprising: 
 a body including a cavity and a plurality of burner ports in communication with the cavity, wherein at least a portion of the body is fabricated from a material having a thermal conductivity greater than about 80 W/mK;    a mixing device positioned in the cavity and adapted to mix a fuel and oxidizer prior to flowing through the plurality of burner ports, wherein the mixing device defines a fluid path having a plurality of angular turns; and    a fluid coolant system for removing heat from the body, wherein the fuel burner is capable of producing a flame having a temperature of at least about 2000° C.