Burner for generating reductive atmosphere of exhaust gas in engine cogeneration plant having denitrification process

Abstract

A burner for generating a reductive atmosphere of exhaust gas in a boiler system of an engine cogeneration plant having a denitrification process comprises a post-combustion burner for combusting an internal combustion engine exhaust gas, and an auxiliary burner installed in an outer side of the post-combustion burner. The internal combustion exhaust gas is supplied from an internal combustion engine exhaust gas injection port. The auxiliary burner is combined with a fuel injection port through which fuel is supplied, and an air channel through which air inflows. Combustion heat generated by combusting the supplied fuel and air is provided to a combustion chamber of the post-combustion burner through a flame channel.

1 . A burner for generating a reductive atmosphere of exhaust gas in a boiler system of an engine cogeneration plant having a denitrification process, the burner comprising:
 a post-combustion burner for combusting an internal combustion engine exhaust gas, the internal combustion exhaust gas being supplied from an internal combustion engine exhaust gas injection port; and   an auxiliary burner installed in an outer side of the post-combustion burner,   wherein the auxiliary burner is combined with a fuel injection port through which fuel is supplied, and an air channel through which air inflows; and combustion heat generated by combusting the supplied fuel and air is provided to a combustion chamber of the post-combustion burner through a flame channel.   
   
   
       2 . The burner according to  claim 1 , wherein a combustible mixture gas is injected to the post-combustion burner, the combustible mixture gas containing fuel to the extent to remove oxygen contained in the internal combustion engine exhaust gas. 
   
   
       3 . The burner according to  claim 1 , wherein the air being supplied to the auxiliary burner is injected to an air injection port and recovers heat transferred from a combustion flame inside the combustion chamber while passing through the air channel. 
   
   
       4 . The burner according to  claim 1 , further comprising a damper capable of adjusting the amount of a combustible mixture gas to be supplied to the combustion chamber of the post-combustion burner after being injected to the internal combustion engine exhaust gas injection port, the combustible mixture gas being a mixture of internal combustion engine exhaust gas and fuel. 
   
   
       5 . The burner according to  claim 1 , wherein a combustion channel of the auxiliary burner is installed in a tangential direction of the combustion chamber to cause turbulent flame so that the flame remains inside the combustion chamber for a longer period of time. 
   
   
       6 . The burner according to  claim 1 , wherein the auxiliary burner includes two or more auxiliary burners.