Biomass gas-carbon co-production reactor and reaction method thereof

A biomass gas-carbon co-production reactor includes:mul-tiple downward bed pyrolysis zones, a gas-solid separationzone, an activated carbon activation zone, and a secondary pyrolysis reaction zone； wherein the activated carbon acti-vation zone communicates with the gas-solid separationzone and the secondary pyrolysis reaction zone； tops of thedownward bed pyrolysis zones penetrate through a top of thegas-solid separation zone, and a heat carrier inlet and a rawmaterial inlet are symmetrically arranged on a left side anda right side of each of the downward bed pyrolysis zones；bottoms of the downward bed pyrolysis zones are locatedinside the secondary pyrolysis reaction zone for communi-cating； a fluidizing air inlet is provided at a bottom of thesecondary pyrolysis reaction zone, and an activated gas inletis provided ata top ofthe secondary pyrolysis reaction zone；an activated carbon outlet is provided on the gas-solidseparation zone.