Homogeous Combustion Method and Thermal Generator Using Such a Method

Abstract

The invention relates to a combustion method wherein a fuel and a combustion agent with a high oxygen content are injected into a combustion chamber ( 20 ), particularly of a thermal generator ( 10 ), said combustion chamber having at least one fuel injection means ( 28 ) and at least one wall ( 22 ) essentially parallel to the axis (XX′) of said injection means. According to the invention, the method comprises: injection of a fuel from the axis (XX′) of the fuel injection means ( 28 ) to wall ( 22 ); injection, at a rate of 1 to 300 m/s, of a combustion agent at a distance from said axis, encountering the fuel in the vicinity of said wall in order to effect mixing over the entire volume of the combustion chamber before entering into reaction.

1 ) Combustion method wherein a fuel and a combustion agent with a high oxygen content are injected into a combustion chamber, particularly of a thermal generator said combustion chamber having at least one fuel injection means and at least one wall essentially parallel to the axis of said injection means, characterized by comprising:
 injection of a fuel from the axis of the fuel injection means to wall;   injection, at a rate of 1 to 300 m/s, of a combustion agent at a distance from said axis, encountering the fuel in the vicinity of said wall in order to effect mixing over the entire volume of the combustion chamber before entering into reaction.   
   
   
       2 ) Method according to  claim 1 , characterized in that the combustion agent injection is counter-current to the fuel injection. 
   
   
       3 ) Method according to  claim 1 , characterized in that the combustion agent is injected in a helical or circular movement around the axis of the fuel injection means. 
   
   
       4 ) Method according to  claim 1 , characterized in that the combustion agent is injected essentially perpendicularly to the axis of the fuel injection means. 
   
   
       5 ) Method according to  claim 1 , characterized in that the combustion agent injection rate is between 50 and 150 m/s. 
   
   
       6 ) Method according to  claim 1 , characterized in that the oxidizing combustion agent is a fluid containing at least 90% oxygen. 
   
   
       7 ) Method according to  claim 1 , characterized in that the fuel is injected in the shape of a cone. 
   
   
       8 ) Method according to  claim 1 , characterized in that it includes a post-combustion step at the outlet from combustion chamber. 
   
   
       9 ) Thermal generator having a combustion chamber in which combustion of a mixture of a fuel and an oxidizing combustion agent occurs, said combustion chamber having at least one fuel injection means and at least one wall essentially parallel to the axis of said injection means, characterized by having at least one means for injecting the fuel in the direction of wall and at least one means for injecting the combustion agent such that it encounters the fuel in the vicinity of said wall at a rate between 1 and 300 m/s such that said fuel and said combustion agent are distributed over the entire volume of the combustion chamber before entering into reaction. 
   
   
       10 ) Generator according to  claim 9 , characterized in that the fuel injection means also has a deflector. 
   
   
       11 ) Generator according to  claim 9  wherein the combustion chamber is delimited by a peripheral wall and two lateral faces, characterized in that the fuel injection means is mounted on one of the faces and is disposed substantially in the axis of the combustion chamber. 
   
   
       12 ) Generator according to  claim 11 , characterized in that the combustion agent injection means is mounted on the other face and is disposed at a distance from the axis of combustion chamber and in the vicinity of wall. 
   
   
       13 ) Generator according to  claim 9 , characterized in that at least one combustion agent injection means is mounted on the peripheral wall. 
   
   
       14 ) Generator according to  claim 9 , characterized in that the combustion agent injection means is located at a distance from the fuel injection means. 
   
   
       15 ) Generator according to  claim 9 , characterized in that the fuel injection means is mounted on wall and is disposed essentially orthogonally to the axis of combustion chamber. 
   
   
       16 ) Generator according to  claim 15 , characterized in that the combustion agent injection means is mounted on wall and is essentially orthogonal to the axis of fuel injection means. 
   
   
       17 ) Generator according to  claim 16 , characterized by the provision of a plurality of injection means extending along the combustion chamber axis. 
   
   
       18 ) Generator according to one of the foregoing claims, characterized in that the combustion agent injection means slopes in order to obtain a circular or helical movement of the combustion agent around the axis of the fuel injection means.