Device for combusting ammonia

Abstract

A device for decomposing ammonia into a nitrogen-hydrogen mixture. The device comprising a cylindrical combustion chamber, a device for supplying air-ammonia mixture, at least one main channel for its supply, a tangential swirler, a spark plug installed in the combustion chamber, and a channel for supplying auxiliary fuel with increased flammability. A cylindrical body is introduced, inside of which a cylindrical combustion chamber is located coaxially with the formation between them, the entrance of the main channel and the tangential swirler, an additional annular channel for supplying and heating the air-ammonia mixture, wherein the cylindrical side surfaces of the body and the combustion chamber have at least one through hole for installation of the spark plug, a flame sensor, a device for secondary air supply and a flame stabilizer are introduced, wherein the combustion chamber is a cooling chamber, at the outlet of which a catalytic unit is installed.

1 . A device for combusting ammonia, comprising: a cylindrical combustion chamber, a device for supplying air-ammonia mixture, including at least one main channel for its supply, at the outlet of which is installed tangential swirler, spark plug installed in the combustion chamber, a channel for supplying auxiliary fuel with increased flammability, characterized in that a cylindrical body is additionally introduced, inside of which a cylindrical combustion chamber is located coaxially with the formation between them, the entrance of the main channel and the tangential swirler, an additional annular channel for supplying and heating the air-ammonia mixture, wherein the cylindrical side surfaces of the body and the combustion chamber have at least one through hole for installation of the spark plug, a flame sensor, a device for secondary air supply and a flame stabilizer are introduced, wherein the combustion chamber is a cooling chamber, at the outlet of which a catalytic unit is installed. 
     
     
         2 . The device according to  claim 1 , characterized in that the flame sensor is made in the form of a thermocouple. 
     
     
         3 . The device according to  claim 1 , characterized in that the flame sensor is installed along the axis of the device in the secondary air supply channel. 
     
     
         4 . The device according to  claim 1 , characterized in that the secondary air channel is formed in the annular gap between the flame sensors and the auxiliary fuel gas supply channel. 
     
     
         5 . The device according to  claim 1 , characterized in that the axial swirler is installed at the outlet of the secondary air channel. 
     
     
         6 . The device according to  claim 1 , characterized in that the secondary fuel supply channel is made in the form of an annular gap between the outer casing and the inner shell of the secondary air supply channel. 
     
     
         7 . The device according to  claim 1 , characterized in that the outlet of the additional fuel channel has axial nozzles. 
     
     
         8 . The device according to  claim 1 , characterized in that the additional fuel may be H 2 , CH 4 , C 3 H 8 . 
     
     
         9 . The device according to  claim 1 , characterized in that the catalytic unit contains a fire barrier plate combined with a mesh catalyst. 
     
     
         10 . The device according to  claim 9 , characterized in that the catalytic unit contains (Pt, Pd) as the active substance. 
     
     
         11 . The device according to  claim 1 , characterized in that the heat exchanger is made as a pipe in a pipe, in the annular gap of which passes ammonia-air mixture containing intensifiers to improve heat exchange. 
     
     
         12 . The device according to  claim 1 , characterized in that the spark plug is cooled by an ammonia-air mixture. 
     
     
         13 . The device according to  claim 1 , characterized in that the secondary air is supplied to the device in a volume of no more than 50% of the primary air volume. 
     
     
         14 . The device according to  claim 1 , characterized in that the additional fuel is supplied in the volume of 5-15% of the ammonia volume.