Patent ID: 7618469
Filing Date: 2009-11-17
Classification: C10J,F23G,Y02E,Y02P

Abstract:
1. A gasification furnace comprising: a gasification chamber for pyrolyzing a fuel to produce combustible gas and char; and a char combustion chamber for combusting the char supplied from said gasification chamber, wherein: said gasification chamber and said char combustion chamber are fully divided from each other by a first partition wall and a second partition wall above the interface of the fluidized bed, said first partition wall having a supply opening below said interface of said fluidized bed for allowing a fluidized medium and the char to be supplied directly from said gasification chamber to said char combustion chamber; a first weakly fluidized region is formed near said supply opening in said gasification chamber by supplying a fluidizing gas, and a strongly fluidized region is formed near said supply opening in said char combustion chamber by supplying a fluidizing gas, thereby allowing a fluidized medium and the char to be supplied to said char combustion chamber from said gasification chamber; and a settling char combustion chamber is defined by providing a partition wall for partitioning a region including a second weakly fluidized region in said char combustion chamber from other regions in said char combustion chamber.