Slag runner on burners for protection against dripping slag

Abstract

With a slag runner on burners or burner niches for protection against dripping slag, which occurs during the gasification of fine-particle fuels that contain ash, within a gasifier, reliable protection of the burner exits or the burner niches to prevent them from becoming clogged with slag is supposed to be made available. This is achieved in that the slag runner ( 8 ) is formed by a plurality of pipe elbows ( 9 ) through which cooling medium flows, which elbows, in the installed position, form a runner surface that faces into the interior of the gasifier, stands at a slant relative to the gasifier wall ( 1 ), and shields the burner ( 2 ) or the burner niche ( 7 ) at the upper region, in the direction of gravity, which surface configures an essentially acute angle (α) relative to the burner wall ( 1 ).

1 . Slag runner on burners or burner niches for protection against dripping slag, which occurs during the gasification of fine-particle fuels that contain ash, within a gasifier,
 wherein   the slag runner ( 8 ) is formed by a plurality of pipe elbows ( 9 ) through which cooling medium flows, which elbows, in the installed position, form a runner surface that faces into the interior of the gasifier, stands at a slant relative to the gasifier wall ( 1 ), and shields the burner ( 2 ) or the burner niche ( 7 ) at the upper region, in the direction of gravity, which surface configures an essentially acute angle (α) relative to the burner wall ( 1 ).   
     
     
         2 . Slag runner according to  claim 1 ,
 wherein   the pipe elbows ( 9 ) that form the slag runner ( 8 ) are formed by a pipe piece whose inflow and outflow penetrates through the gasifier wall ( 1 ) and is connected with the latter in gas-tight manner.   
     
     
         3 . Slag runner according to  claim 1 , wherein
 the pipe elbows ( 9 ) that form the slag runner ( 8 ) are formed by cooling pipe sections of the gasifier wall ( 1 ), which are bent out into the gasifier chamber, bent around, and bent back into the wall plane of the gasifier chamber.   
     
     
         4 . Slag runner according to  claim 3 ,
 wherein   at least some of the pipe regions that form the slag runner ( 8 ) are partly bent out behind the gasifier wall ( 1 ) and bent back into the surface of the gasifier wall.   
     
     
         5 . Slag runner according to  claim 1 , wherein
 the pipe elbows ( 9 ) that form the slag runner ( 8 ) are formed by a part of the burner muffle, which is pushed into the interior of the gasifier by the corresponding amount.   
     
     
         6 . Slag runner according to  claim 1 , wherein
 the pipe elbows ( 9 ) that form the slag runner ( 8 ) are configured to be pinned and rammed in refractory manner.   
     
     
         7 . Slag runner according to  claim 1 , wherein
 the pipe elbows ( 9 ) of the slag runner ( 8 ) have a separate coolant inflow and coolant outflow assigned to them.   
     
     
         8 . Slag runner according to  claim 1 , wherein
 the pipe elbows ( 9 ) of the slag runner ( 8 ) are integrated into the cooling circuit of the burner muffle.   
     
     
         9 . Slag runner according to  claim 1 , wherein
 the pipe elbows ( 9 ) of the slag runner ( 8 ) are integrated into the cooling circuit of the gasifier.