Patent ID: 6972114

Claim:
A biomass gasifier apparatus, comprising: (A) a fuel input system; (B) a fluidized bed gasifier cell, configured to receive fuel from the fuel input system, comprising: (a) bed material, carried at a base of the fluidized bed gasified cell; (b) a fluidizing gas plenum, carried within the fluidized bed gasifier cell; (c) a plurality of manifolds, arranged within the fluidized bed gasifier cell, wherein a space defined between adjacent manifolds is sufficient to allow tramp material to pass downwardly; and (d) a plurality of nozzles, supported by each manifold, wherein gas released by the plurality of nozzles fluidizes the bed material; and (C) wherein the fluidized bed gasifier cell is configured to receive heated gas, and to exhaust a mixture of gases, char and ash from an upper portion of the gasifier cell.