Patent ID: 8480767

Claim:
A fluidized bed gasification system comprising a fluidized bed combustion furnace for heating of bed material through combustion of char, a separator for separating bed material from hot fluid from the fluidized bed combustion furnace, a fluidized bed gasification furnace into which raw material is introduced and the bed material separated in the separator is introduced via a downcomer, the raw material being gasified by means of a fluidized bed supplied with a gasification agent to take-out produced gas, a supply flow passage for circulating the bed material and char produced upon the gasification of the raw material in the fluidized bed gasification furnace to the fluidized bed combustion furnace, said fluidized bed combustion furnace being arranged adjacent to the fluidized bed gasification furnace so that said downcomer from the separator and said supply flow passage are arranged adjacent to the fluidized bed combustion furnace in a plane of the fluidized bed gasification furnace, the raw material being supplied adjacent to the downcomer from the separator, and movement regulation means for regulating moving direction of the bed material arranged between arranged positions of the downcomer of the separator and of the supply flow passage in the plane of the fluidized bed gasification furnace, whereby the bed material introduced via the downcomer is directed together with the raw material to said supply flow passage via a circuitous flow passage for travel throughout the fluidized bed gasification furnace by the movement regulation means.