Patent ID: 7390337
Filing Date: 2008-06-24
Classification: C10J,F23G,Y02E,Y02P

Abstract:
1. A gasification furnace comprising: a gasification chamber for pyrolyzing and gasifying a fuel to produce combustible gas and char; a char combustion chamber for combusting the char supplied from said gasification chamber; a partition wall for dividing said gasification chamber and said char combustion chamber, said partition wall having a supply opening located below an interface of a fluidized bed of said gasification furnace for allowing a fluidizing medium and the char to be supplied directly from said gasification chamber to said char combustion chamber; a furnace bottom slanted downward toward said supply opening; and a settling char combustion chamber provided in said char combustion chamber for allowing the fluidizing medium to descend to a return opening located below the interface of the fluidized bed of said gasification furnace, the fluidizing medium being returned from said char combustion chamber to said gasification chamber through said return opening after the fluidizing medium descends in said settling char combustion chamber.