To provide a gasifying technique of an apparatus for a solid fuel by which the temperature of a produced gas discharged from a gasifying furnace can be reduced while improving the conversion efficiency of the fuel into a gas.
The apparatus is equipped with the gasifying furnace 1, a produced gas channel 59, a washer 3 for washing soot particles accompanied with the produced gas passing through the produced gas channel 59 and containing unreacted combustible components with water and recovering the soot particles, a dehydrator 5 for removing a part of water from washing drain containing the soot particles recovered with the washer 3, regulating the amount of water in a slurry and producing the slurry, a pump 7 for pressurizing the produced slurry and transporting the slurry and a nozzle 11 for feeding the slurry into the gasifying furnace 1. The nozzle 11 is provided in a stepped part equipped with an upper-stage burner 25 installed on the outlet side of the produced gas of the gasifying furnace 1. The apparatus is composed so that the slurry fed from the nozzle 11 into the gasifying furnace 1 is accompanied with a descending stream formed by the upper-stage burner 25 and made to flow in the direction opposite to the flow of the produced gas in the gasifying furnace 1 directed toward the outlet.
TANAKA SHINJI
KISO FUMIHIKO
HANAYAMA FUMIHIKO
BABCOCK HITACHI KK