Table 1　Domestic Woody Biogasification Furnace and Model Example
Type of furnace	Fixed bed		Fluidized bed		Entrained bed	Rotary kiln
	Updraft type	Downdraft type	Babbling type	Circulation type		Internal heating type	External heating type
Basic concept
Gasification method	Direct	Direct	Direct	Indireect	Indireect	Direct	Indireect
Gasifying agent	Air	Air	Air	Steam	Steam	Air	Steam
Gas heat	Low	Low	Low	Medium	Medium	Low	Medium
Tar	High	Low	High	Medium	Low	High	Medium
Model location	Yamagata Prefecture	Iwate Prefecture	Kochi Prefecture	Tokushima Prefecture	Nagasaki Prefecture		Yamaguchi Prefecture
	Hyougo Prefecture	Nara Prefecture		Shimane Prefecture			Mie Prefecture
In operation/Under construction		Hyougo Prefecture		Chiba Prefecture
		Yamaguchi Prefecture
熱分解ガス	pyrolysis gas
予熱層	preheating layer
乾留層	dry distillation layer
酸化層	oxide layer
灰	ash
炭化物	char
バイオマス	biomass
熱媒体	heat medium
水蒸気	steam
粉体バイオマス	powder biomass
過熱蒸気	heating steam
ガス化	gasification
熱風	heated air
チャー燃焼	char combustion
不完全燃焼	imperfect combustion