| 摘要 |
PROBLEM TO BE SOLVED: To provide a gasification apparatus and a gas production method which can improve the production of a product gas obtained by pyrolyzing biomass in a steam atmosphere.SOLUTION: A gasification apparatus comprises: a gasification furnace 1 that gasifies biomass B by pyrolysis in a steam atmosphere to produce a product gas G1 containing hydrogen; an external heating furnace 2 that supplies heat to the gasification furnace 1; a raw material supply part 3 that supplies the biomass B to the gasification furnace 1; a steam supply part 4 that supplies steam W to the gasification furnace 1; a recovery part 5 that recovers pyrolysis residues R contained in the product gas G1; and a residue supply part 6 that supplies the pyrolysis residues R from the recovery part 5 to the gasification furnace 1. A gas production method includes: a first gasification step of gasifying biomass B by pyrolysis in a steam atmosphere to produce a product gas G1 containing hydrogen; a recovery step of recovering pyrolysis residues R contained in the product gas G1; and a second gasification step of gasifying the recovered pyrolysis residues R by pyrolysis in a steam atmosphere to produce a product gas G3 containing hydrogen.SELECTED DRAWING: Figure 1 |
