Coal reforming plant

Abstract

A coal reforming plant includes: a drying combustor for generating drying combustion gas; a dryer for drying low-grade coal introduced into an inside thereof with the combustion gas from the drying combustor being supplied to the inside thereof; a pyrolysis combustor for generating pyrolysis combustion gas; a pyrolyzer for pyrolyzing dried coal with the combustion gas from the pyrolysis combustor being supplied to an inside thereof; a circulating blower for supplying part of pyrolysis gas and pyrolysis oil in gaseous form generated in the pyrolyzer to the pyrolysis combustor; a cooling tower and the like for cooling the other part of the pyrolysis gas and the pyrolysis oil in gaseous form generated in the pyrolyzer, and thus separating the other part into the pyrolysis gas and the pyrolysis oil in liquid form; a circulating blower for supplying the pyrolysis gas separated from the pyrolysis oil in the cooling tower to the drying combustor; and the like.

1 . A coal reforming plant comprising:
 drying combustion gas generating means for generating drying combustion gas;   drying means for drying coal introduced into an inside thereof with the combustion gas from the drying combustion gas generating means being supplied to the inside thereof;   pyrolysis combustion gas generating means for generating pyrolysis combustion gas;   pyrolysis means for pyrolyzing dried coal with the combustion gas from the pyrolysis combustion gas generating means being supplied to an inside thereof, the dried coal being dried in the drying means;   pyrolysis fuel supply means for supplying part of pyrolysis gas and pyrolysis oil in gaseous form generated in the pyrolysis means to the pyrolysis combustion gas generating means;   pyrolysis oil separating means for cooling the other part of the pyrolysis gas and the pyrolysis oil in gaseous form generated in the pyrolysis means, and thus separating the other part into the pyrolysis gas and the pyrolysis oil in liquid form; and   drying fuel supply means for supplying the pyrolysis gas separated from the pyrolysis oil in the pyrolysis oil separating means to the drying combustion gas generating means.   
     
     
         2 . The coal reforming plant according to  claim 1 , wherein
 the drying fuel supply means supplies part of the pyrolysis gas from the pyrolysis oil separating means to the drying combustion gas generating means, and   the coal reforming plant further comprises power generating means for generating power by using the other part of the pyrolysis gas from the pyrolysis oil separating means.   
     
     
         3 . The coal reforming plant according to  claim 1 , further comprising drying combustion gas circulating means for supplying the combustion gas exhausted from the inside of the drying means, to the drying means again. 
     
     
         4 . The coal reforming plant according to  claim 1 , further comprising molding means for compression-molding pyrolysis coal obtained by the pyrolysis in the pyrolysis means. 
     
     
         5 . The coal reforming plant according to  claim 2 , further comprising drying combustion gas circulating means for supplying the combustion gas exhausted from the inside of the drying means, to the drying means again. 
     
     
         6 . The coal reforming plant according to  claim 2 , further comprising molding means for compression-molding pyrolysis coal obtained by the pyrolysis in the pyrolysis means. 
     
     
         7 . The coal reforming plant according to  claim 3 , further comprising molding means for compression-molding pyrolysis coal obtained by the pyrolysis in the pyrolysis means. 
     
     
         8 . The coal reforming plant according to  claim 4 , further comprising molding means for compression-molding pyrolysis coal obtained by the pyrolysis in the pyrolysis means.