Device for producing a hot propellant jet

Abstract

There is disclosed a device for producing a hot propellant jet intended to atomize, and subsequently vitrify, liquid inorganic melts such as, for instance, slags or glass, including a burner chamber. The burner chamber has inlet openings for water and/or vapor distributedly arranged in the axial direction and about the periphery of the flame in a wall surrounding the burner axis and forming an annular chamber with the wall of the burner chamber. A lance including a nozzle is connected to the burner chamber.

What I claim is:  
     
         1 . In a device for producing a hot propellant jet intended to atomize, and subsequently vitrify, liquid inorganic melts such as, for instance, slags or glass, of the type including a burner chamber containing a burner having a burner axis and constructed to produce a flame within said burner chamber and a burner chamber wall defining said burner chamber, the improvement comprising a further wall surrounding said burner axis and forming an annular chamber with said burner chamber wall, a plurality of water and/or vapor inlet openings arranged in said further wall in a manner distributed in the direction of said burner axis and about the periphery of said flame, and a lance including a lance nozzle and connected to said burner chamber.  
     
     
         2 . A device as set forth in    claim 1   , wherein said vapor is saturated vapor and said further wall including said plurality of water and/or vapor inlet openings is a substantially bell-shaped wall arranged in the interior of said burner chamber.  
     
     
         3 . A device as set forth in    claim 1   , wherein said vapor is saturated vapor and said further wall including said plurality of water and/or vapor inlet openings is a substantially conical wall arranged in the interior of said burner chamber.  
     
     
         4 . A device as set forth in    claim 2   , further comprising a burner nozzle and wherein said substantially bell-shaped wall encompasses said burner of said burner chamber concentrically with the generating lines of said substantially bell-shaped wall being designed to diverge from said burner nozzle to the tip of said flame produced by said burner.  
     
     
         5 . A device as set forth in    claim 3   , further comprising a burner nozzle and wherein said substantially conical wall encompasses said burner concentrically with the generating lines of said substantially conical wall being designed to diverge from said burner nozzle to the tip of said flame produced by said burner.  
     
     
         6 . A device as set forth in    claim 1   , wherein said vapor is saturated vapor and said further wall including said plurality of water and/or vapor inlet openings is a substantially cylindrical wall concentrically surrounding said burner axis, and said water and/or vapor inlet openings have clear widths respectively differing from one another in different cross sectional planes.  
     
     
         7 . A device as set forth in    claim 6   , wherein the clear widths of said water and/or vapor inlet openings increase towards the tip of said flame.  
     
     
         8 . A device as set forth in    claim 1   , further comprising a relief valve connected to said annular chamber and capable of being controlled in a pressure-dependent manner by the pressure of said hot propellant jet.  
     
     
         9 . A device as set forth in    claim 1   , wherein said burner chamber is provided for the supply of at least one of water, vapor and combustion air, and further comprising a control valve capable of being controlled as a function of at least one of the pressure and the temperature of said hot propellant jet, wherein said supply of said at least one of water, vapor and combustion air to said burner chamber is conducted via said control valve.  
     
     
         10 . A device as set forth in    claim 1   , further comprising a funnel means constructed to connect said lance with said burner chamber.  
     
     
         11 . A device as set forth in    claim 1   , wherein said burner chamber is mounted so as to be adjustable in height along with said lance.  
     
     
         12 . A device as set forth in    claim 1   , wherein said lance is comprised of an oxide-dispersive superalloy.  
     
     
         13 . A device as set forth in    claim 12   , wherein said oxide-dispersive superalloy comprises a base material selected from the group consisting of Fe and Ni, admixed with Al, Cr and less than 1 wt.-% Y 2 O 3 .