Patent ID: 9428701
Filing Date: 2016-08-30
CPC Classification: C10J,F23C,F23G

Claim Text:
1. A fluidized-bed gasification method comprising: arranging a fluidized-bed combustion furnace where char is burned to heat a bed material; separating hot fluid from said fluidized-bed combustion furnace by a separator into the bed material and an exhaust gas; introducing the separated bed material through a downcomer into a dispersion section extending substantially along a width of a bed-material-introduction-side wall of a fluidized-bed gasification furnace; blowing a fluidizing gas into the dispersion section to fluidize the bed material; supplying the bed material in the dispersion section via a plurality of supply pipes arranged along the width of the bed-material-introduction-side wall into the fluidized-bed gasification furnace substantially evenly throughout the width on a bed-material-introduction side; introducing a raw material into said fluidized-bed gasification furnace where the raw material is gasified in a fluidized bed fed with a gasification agent and a resultant produced gas is taken out; and circulating char produced upon the gasification of the raw material and the bed material to said fluidized-bed combustion furnace to burn the char.