Burner, gasification furnace provided with burner, and burner attaching method

Abstract

The purpose of the present invention is to improve workability when installing a cooling pipe and a burner oxidizer supply pipe through which fuel and an oxidizer are supplied to a combustion furnace or the like of a gasifier. A burner (2) is provided with: an air supply pipe (8) through which air is supplied into a combustion furnace (1); a cooling pipe (6) that is provided so as to surround a supply pipe (5); and a closed flange (7) which is detachably fixed to a furnace wall and to which the air supply pipe (8) and the cooling pipe (6) are fixed. The tip of the cooling pipe (6) on a furnace inside is arranged to project to the furnace inside more than the tip of the supply pipe (5) by a projection allowance length (L1).

1 . A burner comprising:
 an oxygen containing gas supply pipe that supplies oxygen containing gas into a furnace;   a fuel supply pipe that is coaxially located inside the oxygen containing gas supply pipe so as to supply a fuel and oxygen containing gas;   a cooling pipe disposed so as to surround the oxygen containing gas supply pipe; and   a flange to which the oxygen containing gas supply pipe and the cooling pipe are fixed, and which is detachably fixed to a furnace wall.   
     
     
         2 . The burner according to  claim 1 ,
 wherein a tip portion inside the furnace of the cooling pipe is located inside the furnace as much as a predetermined length from a tip portion of the oxygen containing gas supply pipe inside the furnace.   
     
     
         3 . A gasifier comprising:
 the burner according to  claim 1 .   
     
     
         4 . A burner attaching method for a burner including an oxygen containing gas supply pipe that supplies oxygen containing gas into a furnace, a fuel supply pipe that is coaxially located inside the oxygen containing gas supply pipe so as to supply a fuel and oxygen containing gas, a cooling pipe disposed so as to surround the oxygen containing gas supply pipe, and a flange to which the oxygen containing gas supply pipe and the cooling pipe are fixed, and which is detachably fixed to a furnace wall, the method comprising:
 a supply pipe fixing step of fixing the oxygen containing gas supply pipe to the flange;   a cooling pipe fixing step of fixing the cooling pipe to the flange; and   a flange fixing step of detachably fixing the flange to the furnace wall after the supply pipe fixing step and the cooling pipe fixing step,   wherein a position where each of the oxygen containing gas supply pipe and the cooling pipe protrudes inward of the furnace is managed through the flange fixing step.   
     
     
         5 . The burner attaching method according to  claim 4 , further comprising:
 a transportation step of transporting the flange to which the oxygen containing gas supply pipe and the cooling pipe are fixed,   wherein the supply pipe fixing step and the cooling pipe fixing step are performed at a factory, and   wherein the flange fixing step is performed at a job site where the oxygen containing gas supply pipe and the cooling pipe are installed in a combustion furnace having the furnace wall, after the transportation step.   
     
     
         6 . A gasifier comprising:
 the burner according to  claim 2 .