Oxycombustion chamber

Abstract

The present invention relates to a combustion chamber comprising an enclosure ( 1 ) having at least one fuel injection means ( 2 ), at least one oxidizer injection means ( 3 ) and at least one combustion fumes withdrawal means ( 5 ), wherein enclosure ( 1 ) has the shape of a bent closed tube of any section, and the fuel ( 2 ) and oxidizer ( 3 ) injection means are arranged on enclosure ( 1 ) so as to be offset by an angle θ formed by each of the oxidizer and fuel injection positions with respect to centre (C) of the enclosure, ranging between 10° and 90°, and wherein the oxidizer injection means is a means of injecting an oxidant that is a gas with an oxygen concentration above 90%.

1 ) A combustion chamber comprising an enclosure having at least one fuel injection means, at least one oxidizer injection means and at least one combustion fumes withdrawal means, wherein the enclosure has the shape of a bent closed tube of any section, and the fuel and oxidizer injection means are arranged on the enclosure so as to be offset by an angle θ formed by each of the oxidizer and fuel injection positions with respect to centre of the enclosure, ranging between 10° and 90°, and wherein the oxidizer injection means is a means of injecting an oxidant that is a gas with an oxygen concentration above 90%. 
     
     
         2 ) A combustion chamber as claimed in  claim 1 , wherein the enclosure has the shape of a tube bent in a closed circle. 
     
     
         3 ) A combustion chamber as claimed in  claim 1 , wherein the enclosure has the shape of a tube bent in an oval. 
     
     
         4 ) A combustion chamber as claimed in  claim 1 , wherein the section of the tube is circular, oval or polygonal. 
     
     
         5 ) A combustion chamber as claimed in  claim 1 , wherein the section of the tube is triangular. 
     
     
         6 ) A combustion chamber as claimed in  claim 1 , wherein the withdrawal means is arranged within the circle formed by the enclosure so as to achieve low-angle withdrawal. 
     
     
         7 ) A combustion chamber as claimed in  claim 1 , wherein the fuel injection means comprises at least one injection pipe arranged in the radial plane of the enclosure on the outside thereof. 
     
     
         8 ) A combustion chamber as claimed in  claim 7 , wherein the fuel injection pipe forms an angle of inclination α formed by a longitudinal axis of the pipe and line passing through the fuel injection point and tangential to median circular axis of gas circulation trajectory after the injection point, said angle α ranging between 5° and 80°. 
     
     
         9 ) A combustion chamber as claimed in  claim 1 , wherein the fuel injection means comprises at least two low-angle pipes arranged in opposition on the enclosure, a first pipe allowing injection at the top of the enclosure and a second pipe allowing injection at the bottom of the enclosure. 
     
     
         10 ) A combustion chamber as claimed in  claim 9 , wherein the fuel injection pipes form an angle of inclination α′ defined with respect to a longitudinal axis of the pipe and the radial plane of the enclosure, ranging between 5° and 80°. 
     
     
         11 ) A combustion chamber as claimed in  claim 1 , wherein the oxidizer injection means comprises at least one injection pipe arranged in the radial plane of the enclosure on the outside thereof. 
     
     
         12 ) A combustion chamber as claimed in  claim 11 , wherein the oxidizer injection pipe forms an angle of inclination β formed by a longitudinal axis of the pipe and line passing through the fuel injection point and tangential to median circular axis of gas circulation trajectory after the injection point, said angle β ranging between 5° and 80°. 
     
     
         13 ) A combustion chamber as claimed in  claim 1 , wherein the oxidizer injection means comprises at least two low-angle pipes arranged in opposition on the enclosure, a first pipe allowing injection at the top of the enclosure and a second pipe allowing injection at the bottom of the enclosure. 
     
     
         14 ) A combustion chamber as claimed in  claim 13 , wherein the oxidizer injection pipes form an angle of inclination β′ defined with respect to the longitudinal axis of the pipe and the radial plane of enclosure, ranging between 5° and 80°. 
     
     
         15 ) A combustion chamber as claimed in  claim 1 , wherein the withdrawal means forms an angle γ defined with respect to the longitudinal axis of the withdrawal means and radius of the circle formed by the enclosure, and oriented in the direction of circulation of the fumes. 
     
     
         16 ) A combustion chamber as claimed in  claim 15 , wherein angle γ ranges between 20° and 85°. 
     
     
         17 ) A combustion chamber as claimed in  claim 1 , wherein the tube has a section whose size ranges between 100 mm and 2000 mm.