Method and installation for the uninterupted supply of a gasification plant with fuel

Abstract

With a method and a system for interruption-free fuel supply to a gasification system for the production of crude synthesis gas, whereby the fuel is passed from a fuel reservoir to a grinding/drying system, subsequently the resulting fuel dust is passed to a fuel storage container, from there to a dust feed container, and finally, to the gasifier, by way of transport means, the system availability is supposed to be increased, and, at the same time, the storage capacities are supposed to be minimized, in order to thereby particularly achieve a cost reduction. This is achieved in that the fuel in the form of dust is passed to the storage container from at least two grinding/drying systems, by way of transport means, whereby at least one of the transport means, as a dust transport device, is acted on by at least two grinding/drying systems.

1 . Method for interruption-free fuel supply to a gasification system for the production of crude synthesis gas, whereby the fuel is passed from a fuel reservoir to a grinding/drying system, subsequently the resulting fuel dust is passed to a fuel storage container, from there to a dust feed container, and finally, to the gasifier, by way of transport means,
 wherein   the fuel in the form of dust is passed to the storage container from at least two grinding/drying systems, by way of transport means, whereby at least one of the transport means, as a dust transport device, is acted on by at least two grinding/drying systems.   
     
     
         2 . Method according to  claim 1 , wherein
 each storage container that precedes the gasifier is acted on by at least two grinding/drying systems at the same time.   
     
     
         3 . Method according to  claim 1 , wherein
 in order to achieve 100% redundancy, a further dust transport device is assigned to a dust transport device, and wherein these are acted on by at least two grinding/drying devices, simultaneously and/or separately.   
     
     
         4 . System for interruption-free fuel supply to a gasification system ( 17 ) for the production of crude synthesis gas, whereby the fuel is passed from a fuel reservoir ( 1 ) or a fuel storage unit to a grinding/drying system ( 6 ), subsequently the fuel dust is passed to a fuel storage container ( 13 ), from there to a dust feed container ( 16 ), and finally, to the gasifier ( 17 ), by way of transport means ( 2 ,  4 ,  5 , or  12 ),
 wherein   at least two grinding/drying systems ( 6   a ,  6   b ) are assigned to the dust storage container ( 13 ), along with conveying means ( 11 ,  12 ) for feed of the fuel in the form of dust, whereby at least one conveying means is formed by two dust transport device ( 12   a ,  12   b ) that are acted on by at least two grinding/drying systems ( 6   b ,  6   c ).   
     
     
         5 . System according to  claim 4 , wherein
 each gasifier ( 17 ) has a storage container ( 13 ) assigned to it, whereby the storage container ( 13 ) is acted on by at least two grinding/drying systems ( 6   a ,  6   b ).   
     
     
         6 . System according to  claim 4 , wherein
 in order to form 100% redundancy, each dust transport device ( 12 ) is formed by two dust transport devices ( 12   a ,  12   b ), which are acted on jointly and/or separately, to which devices two grinding/drying systems ( 6   b ,  6   c ) are assigned, in each instance.   
     
     
         7 . System according to  claim 6 , wherein
 each grinding/drying system ( 6 ) has at least two solid feed silos ( 7 ,  8 ) and a mill ( 9 ) assigned to it, to supply and mix different fuels or additives.   
     
     
         8 . System according to  claim 7 , having a plurality of gasifiers ( 17 ), with a dust storage container ( 13   a ,  13   b ) assigned to each gasifier ( 17 ),
 wherein   each dust storage container ( 13   a ,  13   b ) is connected with multiple grinding systems ( 6   b ,  6   c ) by way of dust transport devices ( 12   a ,  12   b ).   
     
     
         9 . System according to  claim 8 , wherein
 the transport devices ( 12 ) from the grinding/drying systems ( 6 ) to the storage container ( 13 ), in each instance, are formed as horizontal conveyors, particularly as a fluidization channel, through chain conveyor, screw conveyor, belt conveyor, pipe conveyor, or as a pipe/belt conveyor.   
     
     
         10 . System according to  claim 4 , wherein
 a separate transport device ( 2   a ,  3   a ) from the fuel storage unit ( 1 ) to a distribution device ( 4   a ,  5   a ) is provided for each type of solid, and a distribution device ( 4   a ,  5   a ) to the silos ( 7 ,  8 ) of the grinding/drying systems ( 6 ) is provided for each type of solid.   
     
     
         11 . System according to  claim 10 , wherein
 the transport device ( 2   a ,  3   a ) and the distribution device ( 4   a ,  5   a ) for each type of fuel are structured with 100% redundancy ( 2   b ,  3   b , and  4   b ,  5   b ), in each instance.   
     
     
         12 . System according to  claim 10 , wherein
 the distribution devices ( 4   a ,  4   b ,  5   a ,  5   b ) for the crude solid to the silos ( 7 ,  8 ) of the grinding/drying systems ( 6 ) are connected with every grinding/drying system.