Biomass gasifier device

摘要

A gasification apparatus can produce hydrogen-containing gas from biomass with high thermal efficiency at low costs without severe trouble caused by tar generated by pyrolyzing the biomass, while maximizing the gasification rate of the tar. The gasification apparatus includes a biomass pyrolyzing zone for heating biomass in a non-oxidizing atmosphere, and a gas reforming zone for heating the resulting pyrolyzed gas in the presence of steam. A plurality of preheated granules and/or lumps is moved from the gas reforming zone to the biomass pyrolyzing zone, the apparatus reforms the gas generated by pyrolyzing the biomass and pyrolyzes the biomass, using the heat of the granules and/or lumps. The biomass pyrolyzing zone and the gas reforming zone is provided in a single vessel, and at least one partitioning plate is provided between the biomass pyrolyzing zone and the gas reforming zone.

主权项

1. A gasification apparatus comprising:
a biomass pyrolyzing zone for heating biomass in a non-oxidizing atmosphere or an atmosphere of mixed gas of non-oxidizing gas and steam; a gas reforming zone for heating gas generated in the biomass pyrolyzing zone, in the presence of steam; a plurality of preheated granules and/or lumps being sequentially moved from the gas reforming zone to the biomass pyrolyzing zone to reform the gas generated by pyrolyzing the biomass and to pyrolyze the biomass, using heat of the granules and/or lumps; and a plurality of staggered flow guides in the biomass pyrolyzing zone, the flow guides being aligned in a plurality of rows along a travelling direction of the granules and/or lumps from the vicinity of exits for the granules and/or lumps in the partitioning plate, the flow guides controlling the travelling direction of the granules and/or lumps, wherein the biomass pyrolyzing zone and the gas reforming zone are comprised in a single vessel, the gas reforming zone is disposed above the biomass pyrolyzing zone, at least one partitioning plate is further comprised between the biomass pyrolyzing zone and the gas reforming zone, and the biomass is fed to the granules and/or lumps traveling in the vicinity of the flow guides and is pyrolyzed.