DEVICE FOR PRODUCING A PRODUCT GAS FROM A FUEL, SUCH AS BIOMASS

摘要

A device for producing a product gas from a fuel, such as biomass, compri ses a reactor which is delimited by a base and reactor walls. The reactor wa lls comprise a peripheral wall and an upper wall. The reactor comprises a su pply opening for the supplying of biomass, as well as at least one riser for chemically converting the biomass supplied to a product gas and a solid. Th e riser is provided inside the peripheral wall and comprises an upper end an d a tower end. The reactor furthermore has a discharge opening for dischargi ng the product gas. The riser is attached to at least one reactor wall. The lower end of the riser is at a distance above at least one section of the ba se which is underneath it and is freely movable under the effect of thermal expansion.