To provide a method for gasifying solid biomass fuel, and a gasifier capable of easily a starting up, containing no tar in a generated gas, affording the gas of stable composition with a high CO concentration, and short in a time until stabilizing the composition of the gas.
This downward ventilation-type gasifier has the following constructions. An inlet for a solid biomass fuel 4 is provided on the top of a gas generator, an air intake port 17 is provided at the central part of the generator, a fire grate 14 is provided on the lower part of the generator, and an outlet for a generated gas is provided under the fire grate 14; this gasifier also includes a refractory ball-laid bed with a plurality of metallic balls 15 arranged nearly uniformly in layers on the fire grate and a preliminarily heating means for the refractory balls (e.g. a burner). The other method for gasifying a solid biomass comprises the steps of preliminarily heating the metallic balls 15 to a specified temperature of 500-800°C prior to charging the solid biomass fuel 4, then charging the solid biomass fuel 4 into the gas generator, and discharging the generated gas through under the fire grate.
NEMOTO YASUYUKI
HOSOKAWA BANRYU
KITAO SEIJI
KUROSAKI MIKIRO
KOSHI KAZUAKI
SHUDO SUEO
HOSOKAWA TETSUICHIRO
FUJI ELECTRIC CO LTD
SANYO JUKO KK
HOSOKAWA BANRYU
KUROSAKI ENGINEERING KK
Iwao Yamaguchi